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Главная страница Справка Коды ЭШД E51

Коды ЭШД

E48 E49 E50

E51

E52 E53 E54

E51

Код энциклопедии шахматных дебютов (ЭШД)

Описание

RU: Защита Нимцовича. Система Рубинштейна: 4...0-0 5 Кf3 d5
EN: Nimzo-Indian: Rubinstein: 4...0-0 5 Nf3 d5

Ходы

1. d4 Кf6 2. c4 e6 3. Кc3 Сb4 4. e3 0-0 5. Кf3 d5 6. Сd3 Кc6

Дебюты

Защита Нимцовича

[Event "IND-chT 40th"]
[Site "Ahmedabad"]
[Date "2020.02.11"]
[Round "7.1"]
[White "Adhiban, Baskaran"]
[Black "Narayanan, Srinath"]
[Result "1-0"]
[ECO "E51"]
[WhiteElo "2654"]
[BlackElo "2535"]
[Annotator "Adhiban,B"]
[PlyCount "103"]
[EventDate "2020.02.07"]
[EventType "team-swiss"]
[EventRounds "9"]
[EventCountry "IND"]
[SourceTitle "CBM 194 Extra"]
[Source "ChessBase"]
[SourceDate "2020.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.03.31"]
[SourceQuality "1"]
[WhiteTeam "Petroleum Sports"]
[BlackTeam "Air India"]
[WhiteTeamCountry "IND"]
[BlackTeamCountry "IND"]

{My opponent, although a good friend, was a direct competitor for the gold
medal on board 1!} 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Bb4 5. e3 O-O 6. Bd2 b6
7. cxd5 exd5 8. Rc1 Bb7 9. Bd3 {Here Srinath went into Zen state for some
minutes and finally decided to follow the way shown by another fellow
countryman!} Be7 10. O-O c5 {The idea is to develop the knight to c6 where it
will be more actively placed and directly aimed against the Ne5 plan.} 11. dxc5
$5 (11. Ne5 Nc6 {The point!} 12. a3 Bd6 13. Ng4 Ne8 $1 14. f4 f5 15. Ne5 cxd4
16. Nxc6 Bxc6 17. exd4 Qd7 18. Qb3 Nc7 {Black was more than fine in
Bluebaum-Vidit, Fide Grand Swiss 2019.}) 11... bxc5 12. Re1 {This has happened
in a handful of games.} Nc6 ({The only line where Black managed to win was} 
12... Na6 $5 13. Bb1 Re8 14. b3 Bf8 15. Ne2 Ne4 {Black was superior in
Aczel-Almasi, Budapest 2018.}) 13. Bb1 $5 Rc8 $146 (13... Rb8 $5 14. e4 dxe4
15. Nxe4 Nd4 16. Bc3 Nxe4 17. Bxe4 Bf6 {was equal in (Rakhmanov-Sargissian
Moscow 2019)}) (13... Re8 14. e4 dxe4 15. Nxe4 Nd4 16. Nxd4 $5 (16. Bc3 Nxe4
17. Bxe4 Bxe4 18. Rxe4 Qd5 {ended in a tame draw (Vitiugov-Inarkiev Satka 2018)
}) 16... cxd4 17. Qa4 $5 Nxe4 18. Bxe4 Bxe4 19. Rxe4 Bf6 20. Ba5 Qb8 21. Rxe8+
Qxe8 22. Qxe8+ Rxe8 23. Kf1 {White eventually managed to convert the queenside
majority in Rakhmanov-Rozum, Khanty-Mansiysk 2019.}) 14. e4 {Looked most
natural.} (14. Bf5 Rb8 15. Na4 (15. e4 dxe4 16. Nxe4 Nd4 {[%csl Rf5]} 17. Nxd4
cxd4 {looks fine for Black.}) 15... Ne4 16. Bc3 $5 {was probably an
interesting option.}) 14... dxe4 15. Nxe4 Nd4 16. Bc3 Nxe4 17. Bxe4 Bxe4 18.
Rxe4 Bf6 19. b3 {I decided that this was more useful than Qd3.} (19. Bxd4 cxd4
20. Rxc8 Qxc8 {I didn't want to enter this yet due to the presence of the
rooks.}) 19... Re8 (19... Qd5 {looked somewhat easier.}) 20. Rxe8+ Qxe8 21.
Bxd4 $1 {Now it is time to enter the endgame!} cxd4 22. Rxc8 Qxc8 23. Ne1 $1 {
I was happy to play this endgame, due to the superior combo of knight + queen
vs bishop + queen.} g6 24. h3 {Just getting rid of any back rank issue :)} h5
25. Nd3 Qc3 (25... h4 $1 {was possibly the better move fixing the pawn
structure.}) 26. g4 $1 {Of course! Preparing Qf3 next.} hxg4 27. hxg4 Be7 (
27... Qc6 $5 {I thought it was important to prevent the activation of my queen
from f3.}) 28. Qf3 Bd6 29. Kg2 Qc2 30. Qa8+ $1 {An important move provoking
the king to g7 or h7.} Kh7 (30... Kg7 31. Qe4 {[%csl Rd4] is one of the points.
}) 31. Qe4 Qxa2 {I thought this was not possible.} (31... Qc3 {looked safer
and I can probably eventually get the pawns rolling on the queenside.}) 32. Qd5
Qe2 33. Qxf7+ Kh6 34. Qf3 Qe6 (34... Qxf3+ 35. Kxf3 Kg5 36. b4 $1 {[%cal Gb4b5]
} a6 37. Nc5 Bxc5 38. bxc5 Kf6 39. Ke4 g5 (39... a5 40. Kxd4 a4 41. Kc4 Ke6 (
41... Ke5 42. f4+ $1) 42. f4 a3 43. Kb3 Kd5 44. f5 gxf5 45. g5 {White is
faster.}) 40. Kxd4 a5 41. Kc4 {wins.}) 35. b4 $1 {Preparing b5 or Nc5.} Kg5 36.
Kh3 a6 (36... Qg8 $5 {I thought was good but didn't look so dangerous.} 37. Nc5
Qh7+ 38. Kg2 Qh2+ 39. Kf1 {and no more checks.}) 37. Nc5 Bxc5 38. bxc5 d3 (
38... Qc4 $5 {was maybe a better try.}) 39. Qxd3 (39. c6 {was my original
intention, but I didn't like} Qd6 $1 {after which Black seemed to be holding.})
39... Qxg4+ 40. Kh2 Qh4+ (40... Qe6 $1 {was the right way and Black can hold
this endgame with precise play.}) 41. Kg2 Qg4+ 42. Kf1 Qe6 43. Qc3 $1 Qc6 44.
Qe5+ $1 {An important move kicking the queen farther away from the pawn and
preparing Qd6.} Kg4 45. Kg1 $1 {No more checks!} a5 46. Qd6 Qe4 47. c6 Qe1+ 48.
Kg2 Qe4+ 49. Kh2 Kh5 50. c7 Qh4+ 51. Kg1 Qg4+ 52. Qg3 {After the game I found
that this game accuracy level was 100%!! Something to be proud of!} 1-0

[Event "CCA-ICC op"]
[Site "Lake George"]
[Date "2005.05.12"]
[Round "2"]
[White "Atalik, Suat"]
[Black "Izoria, Zviad"]
[Result "1/2-1/2"]
[ECO "E51"]
[WhiteElo "2561"]
[BlackElo "2602"]
[Annotator "Atalik,S"]
[PlyCount "38"]
[EventDate "2005.05.11"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "USA"]
[SourceTitle "CBM 106 Extra"]
[Source "ChessBase"]
[SourceDate "2005.07.01"]
[SourceVersion "1"]
[SourceVersionDate "2005.07.01"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Bb4 5. e3 $5 {transposing the game into
the lines of Nimzo-Indian.} O-O 6. Bd2 $5 {This is what 'Kortschnoj' does. I
was still under the influence of Chess is My Life and Anti-Chess!} c5 $5 {
I always thought that I will have some advatange after this. But things are
not easy.} (6... b6 7. Bd3 Bb7 8. Qe2 $14) 7. a3 (7. cxd5 cxd4 8. Nxd4 Nxd5 9.
Nxd5 Bxd2+ 10. Qxd2 Qxd5 11. Nb5 Qxd2+ 12. Kxd2 Rd8+ 13. Bd3 Nc6 $11) 7... Bxc3
(7... cxd4 8. axb4 dxc3 9. Bxc3 Ne4 10. cxd5 $14) 8. Bxc3 cxd4 (8... Ne4 9. Rc1
$14) 9. Bxd4 $6 (9. Nxd4 {Whatever happens I had to try} Ne4 10. Bb4 Re8 11.
cxd5 a5 $1 12. Bc3 Nxc3 13. bxc3 Qxd5 (13... exd5 14. Bb5 Bd7 15. Qa4 Nc6 $1
16. O-O $14) 14. Nb5 Qg5 $13) (9. Qxd4 Nc6 10. Qh4 Ne4 11. Qxd8 Rxd8 $11) 9...
Nc6 10. cxd5 Nxd4 11. Qxd4 Qxd5 12. Qxd5 Nxd5 13. Bd3 Rd8 14. Ke2 Bd7 (14... b6
$5 $11 {appeals to me even more than the move he has chosen.}) 15. Rac1 Rac8
16. Rxc8 Rxc8 17. Kd2 Kf8 18. Rc1 Rxc1 19. Kxc1 b6 (19... b6 {Here he offered
a draw, maybe even for a second time because somewhere during the exchanges I
had the impression that he has done it a first time. However I was not sure,
besides I did not care.} 20. Be4 {I could have continued against the future 50.
000$ man but there is really little in the position.} (20. Ne5 Be8 21. Be4 Ne7
22. Kd2 f6 23. Nc4 Bc6 24. Kd3 Ke8 25. Bxc6+ Nxc6 $11) 20... Ne7 21. Kd2 Bc6
22. Kd3 Ke8 23. Bxc6+ Nxc6 24. Kc4 a6 25. b4 Na7 26. a4 f6 27. Nd4 Kd7 $11)
1/2-1/2

[Event "North American op 30th"]
[Site "Stillwater"]
[Date "2011.05.28"]
[Round "4"]
[White "Atalik, Suat"]
[Black "Yermolinsky, Alex"]
[Result "1/2-1/2"]
[ECO "E51"]
[WhiteElo "2616"]
[BlackElo "2530"]
[Annotator "Atalik,S"]
[PlyCount "79"]
[EventDate "2011.05.27"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "USA"]
[SourceTitle "CBM 142 Extra"]
[Source "ChessBase"]
[SourceDate "2011.06.27"]
[SourceVersion "1"]
[SourceVersionDate "2011.06.27"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 {The Nimzo-Indian Defence which Alex likes,
shaped the flow this encounter.} 4. e3 {In year 2012, I have decided to always
put my knight on f3 and my bishop on d3.} d5 $5 {An interesting line,possibly
preventing many systems with early Nge2.} (4... Nc6 5. Nf3 Bxc3+ 6. bxc3 d6 7.
Bd3 O-O 8. O-O e5 9. Nd2 Re8 10. Qc2 Qe7 11. f3 $14) (4... c5 5. Nf3 Nc6 6. Bd3
Bxc3+ 7. bxc3 d6 {The start of the notorious Huebner System.} 8. O-O (8. e4 e5
9. h3 h6 10. Be3 b6 11. d5 Ne7 12. Nd2 g5 (12... Ng6 13. g3 O-O 14. Qc2 Bd7 15.
Nf1 Nh7 16. h4 Ne7 17. Nd2 f5 18. exf5 Bxf5 19. g4 Bxd3 20. Qxd3 $14) (12...
Nh7 13. h4 $5) 13. Nf1 Ng6 14. g3 Bd7 15. Bd2 Qe7 16. Ne3 $14) 8... e5 9. Nd2
O-O 10. Rb1 b6 11. h3 Bd7 12. f4 exd4 13. cxd4 cxd4 14. e4 Re8 15. Re1 $44) (
4... b6 5. Bd3 Bb7 6. Nf3 O-O (6... Ne4 7. O-O Bxc3 8. bxc3 O-O 9. Ne1 f5 10.
f3 Nf6 (10... Ng5 11. Nc2 d6 12. Qe2 Nd7 13. e4 fxe4 14. Bxg5 Qxg5 15. Bxe4
Bxe4 16. Qxe4 $16) 11. Nc2 c5 12. Qe2 d6 13. e4 fxe4 14. fxe4 Nbd7 15. Bg5 Qc7
16. Kh1 $14) 7. O-O c5 8. Na4 cxd4 9. exd4 Be7 (9... Re8 10. Bg5) (9... Qc7 10.
Be3 $5 $14) 10. Re1 d6 (10... Re8 11. Bg5 d6 12. Nc3 Nbd7 13. b4 $14) 11. b4
Nbd7 12. Bb2 Re8 13. Nc3 Rc8 14. Nd2 Qc7 15. a4 $14) (4... O-O 5. Bd3 d5 6. Nf3
c5 (6... b6 7. O-O Bb7 (7... Ba6 8. cxd5 Bxd3 9. Qxd3 exd5 10. a3 Be7 11. b4 c6
12. Bb2 $16) 8. cxd5 exd5 9. a3 Bd6 (9... Be7 10. b4 Nbd7 11. Qb3 c6 12. a4 a5
13. bxa5 Rxa5 14. Ba3 c5 15. Bb5 $14) 10. b4 a6 11. Qb3 Qe7 12. Rb1 Nbd7 13. a4
Ne4 14. Bb2 Ndf6 15. b5 $14) 7. O-O Nc6 (7... dxc4 8. Bxc4 Nbd7 (8... Bd7 9.
Qe2 Bc6 10. Rd1 Qe7 11. a3 Ba5 12. Bd2 Bxf3 13. Qxf3 Nc6 14. dxc5 Qxc5 15. Bf1
$14) (8... a6 9. a3 Ba5 10. dxc5 Bxc3 11. bxc3 Qa5 12. a4 $14) (8... Qe7 9. a3
Ba5 10. Qc2 $1 Bd7 11. Ba2 Rc8 12. Bd2 cxd4 13. exd4 h6 (13... Bc6 $2 14. d5 $1
) 14. Rfe1 Qd8 15. Qd3 Nc6 16. Rad1 Be8 17. Bb1 Ne7 $14) (8... b6 9. a3 Bxc3
10. bxc3 Bb7 11. Bd3 Qc7 (11... Nbd7 12. Re1 Ne4 (12... Be4 13. Bxe4 Nxe4 14.
Qd3 Ndf6 15. c4 Qc7 16. Bb2 Rfd8 17. Rac1 Rac8 18. h3 $14) 13. Bb2 $14) 12. Re1
Be4 13. Bxe4 Nxe4 14. Qd3 Qb7 15. c4 Nd7 16. Bb2 Ndf6 17. Rad1 $14) (8... cxd4
9. exd4 Nbd7 (9... a6 10. a3 Bxc3 11. bxc3 b5 (11... Qc7 12. Bd3 Qxc3 13. Bf4
Nc6 14. Re1 Nd5 (14... h6 15. Bd6 Rd8 16. Bc7 Rd7 17. Re3 Qb2 18. Rb1 Qa2 19.
Ne5 Nd5 20. Nxd7 Bxd7 21. Rxb7 Nxe3 22. fxe3 Nxd4 23. Be5 Bc6 24. Qg4 Qa1+ 25.
Kf2 Qa2+ $11) 15. Bd6 Rd8 16. Bxh7+ Kxh7 17. Ng5+ Kg6 18. Ne4 Qxe1+ 19. Qxe1 f5
20. f3 fxe4 21. fxe4 Nf6 22. e5 Rxd6 23. Qg3+ Kh7 24. exd6 $13) 12. Bd3 Bb7 13.
a4 Qd5 14. axb5 axb5 15. Rb1 Bc6 16. Re1 Nbd7 17. Qe2 Ra2 18. Qf1 Ng4 19. Re2
$14) (9... b6 10. Bg5 Bb7 11. Re1 Nbd7 (11... Nc6 12. a3 Be7 13. Qd3 $40) 12.
Rc1 Rc8 13. Bd3 $5 Bxc3 $5 14. bxc3 Qc7 15. Bh4 Qd6 16. Bg3 Qa3 17. Qb3 Qxb3
18. axb3 $14)) 9. a3 cxd4 (9... Ba5 10. Nb5 $14) 10. axb4 dxc3 11. bxc3 Qc7 12.
Be2 Nd5 (12... Qxc3 13. Rb1 Qc7 14. Bb2 $44) 13. Ba3 $44) (7... Nbd7 8. cxd5
exd5 9. a3 Bxc3 10. bxc3 Re8 11. Nd2 $14) (7... b6 8. cxd5 exd5 9. dxc5 bxc5
10. Ne2 Nc6 11. b3 Bg4 12. Bb2 d4 $3 {This is an amazing line by the master of
isolated and hanging pawns Paul Keres.} (12... Ne4 $2 13. a3 Ba5 14. Qc2 Bxf3 (
14... Qe7 15. Ng3 f5 16. b4) 15. gxf3 Nd2 16. b4 Nxf1 17. bxa5 Nxe3 18. fxe3
$18) 13. exd4 Bxf3 14. gxf3 Nxd4 15. Nxd4 cxd4 16. Bxd4 Nh5 17. Kh1 Qh4 18. Be5
Rad8 19. Rc1 Qh3 (19... Nf4 20. Bxf4 Qxf4 21. Rc4) 20. Bg3 Qd7 21. Rc4 a5 22.
Bc2 Qh3 23. Bd3 $11) 8. a3 (8. cxd5 exd5 9. dxc5 Bxc5 10. b3 a6 11. Bb2 Bg4 12.
h3 Bh5 13. Be2 Ba7 14. Nh4 $14) 8... Bxc3 (8... dxc4 9. axb4 cxd4 10. Bxc4 dxc3
11. bxc3 Qc7 12. Be2 b6 13. Bb2 Bb7 14. Qb3 $14) (8... Ba5 9. cxd5 exd5 10.
dxc5 Bxc3 11. bxc3 Bg4 12. c4 Ne5 13. Bb2 (13. cxd5 Bxf3 14. gxf3 Nxd5 (14...
Qxd5 $2 15. Be2 Qxc5 16. Bb2 Rad8 17. Bd4 Qc8 18. Qb3 $16) 15. f4 Nxd3 16. Qxd3
Qf6 17. Bb2 Nxf4 18. Bxf6 Nxd3 19. Bd4 Rfc8 20. Rfb1 $11) 13... Nxf3+ 14. gxf3
Bh3 15. cxd5 Qxd5 16. Bxf6 gxf6 17. Kh1 Rfd8 18. Rg1+ Kh8 19. Be2 Qxc5 20. Qa4
$11) 9. bxc3 Qc7 (9... b6 10. cxd5 exd5 11. Nd2 $5 Re8 12. Re1 Bb7 13. f3 Qc7
14. Bb2 $13) (9... dxc4 10. Bxc4 Qc7 11. h3 b6 12. Bd3 e5 13. Qc2 Rd8 14. e4 c4
15. Bxc4 exd4 16. Bd3 dxc3 17. Qxc3 $14) 10. h3 dxc4 11. Bxc4 e5 (11... b6 12.
Bd3 e5 13. Qc2 Bb7 14. e4 c4 15. Bxc4 exd4 16. Bd3 dxc3 17. Qxc3 Rac8 18. Bb2
Rfe8 $14) 12. Bb2 Bf5 13. Bb5 e4 14. Nd2 Rfd8 15. Qe2 a6 16. Bxc6 Qxc6 17. c4
cxd4 18. Bxd4 Nd7 19. Rfb1 Qg6 20. Kh1 b6 21. a4 a5 22. Rb5 $14) 5. a3 $1 {
This was supposed to be the best. However the judgement is academic.} (5. Nf3
c5 6. a3 Bxc3+ 7. bxc3 O-O 8. Bb2 Nc6 9. Rc1 $5 $13 {could be tried.}) 5... Be7
$5 {There is alot to say about this move.Conceivably black intended to take on
c3 after having played Bb4 but since White has already shut his bishop on c1 a
retreat has also its merits.} (5... Bxc3+ 6. bxc3 c5 7. cxd5 exd5 8. Bd3 O-O 9.
Ne2 b6 10. O-O Ba6 {Since Botvinnik-Capablanca,AVRO 1938 this position is
considered to be better for White.However once again due to imbalanced pawn
structure,it is very difficult to handle such positions.} 11. f3 (11. Bxa6 Nxa6
12. f3 Re8 13. Ng3 Nc7 14. Qd3 Ne6 15. Bb2 Rc8 16. Rad1 Qc7 17. Rf2 $13) 11...
Re8 12. Ng3 Bxd3 13. Qxd3 Nc6 14. Bb2 (14. Ra2 Qd7 15. Re2 Re6 16. Bb2 Rd8 17.
Rd1 Ne7 18. e4 Qa4 $13 {is not as easy as it seems.}) 14... c4 15. Qd2 h5 16.
Rae1 h4 17. Nh1 (17. Nf5 $6 Ne7 $1 {is the trick.}) 17... Re6 18. Nf2 Qe7 19.
Re2 Re8 20. Rfe1 Nh5 21. e4 Na5 22. Bc1 Nb3 23. Qg5 Nxc1 24. Qxc1 $13 {and
once again it is not clear at least to me if White is better despite of having
succeeded to push e4.}) (5... Bd6 $5) 6. Nf3 O-O 7. b4 {The most obvious move
although there are alernatives.} (7. b3 $5 c5 8. Bd3 cxd4 9. exd4 Nc6 10. O-O
b6 11. Bb2 Bb7 12. Rc1 Rc8 13. Re1 $14) (7. Bd3 $5 {is what I had with Eljanov
once.} Nbd7 (7... dxc4 8. Bxc4 c5 9. O-O $14 (9. dxc5 $5 Qxd1+ 10. Kxd1 Bxc5
$14 {Averbakh has won it once.})) (7... b6 8. cxd5 exd5 9. b4 $14 {and it is
worse for Black to have Be7 rather than Bd6 .}) 8. O-O (8. e4 $6 dxe4 9. Nxe4
c5 (9... b6 10. Qc2 Bb7 11. Be3 c5 12. Nxf6+ Nxf6 13. dxc5 Bxc5 $36) 10. Nxc5
Bxc5 (10... Nxc5 11. dxc5 Bxc5 12. O-O $14) 11. dxc5 Nxc5 12. Bc2 Qxd1+ 13.
Bxd1 e5 14. Bc2 $14) 8... c5 9. cxd5 exd5 10. Bc2 $1 $14) 7... a5 $5 (7... Nbd7
{was subject to some Botvinnik-Reshevsky games.} 8. Bd3 (8. Bb2 c6 9. Qc2 dxc4
10. Bxc4 a5 11. b5 Nb6 12. Bd3 cxb5 13. Nxb5 Bd7 14. O-O Rc8 15. Qe2 Na4 $1
$132 {is the main idea behinds Black's play.}) (8. c5 c6 9. Bd3 b6 10. O-O a5
11. Bb2 Ba6 12. Bxa6 Rxa6 13. b5 cxb5 14. c6 Nb8 15. Ne5 b4 16. Nb5 Ne8 {
should give White compensation.}) 8... c6 9. O-O $13) 8. b5 c5 9. dxc5 $146 {
I still think that my move is the proper one.} (9. bxc6 bxc6 $13 (9... Nxc6 10.
Bb2 b6 $14)) 9... Bxc5 (9... Nbd7 $6 10. c6 bxc6 11. bxc6 Nc5 12. Rb1 $1 (12.
cxd5 $2 Nxd5 13. Nxd5 exd5 14. Nd4 Bf6 15. Bb2 Rb8 16. Qc2 Rxb2 17. Qxb2 Bxd4
18. Qxd4 Nb3 19. Qc3 Nxa1 20. Qxa1 Qb6 $11)) 10. Bb2 b6 11. cxd5 exd5 12. Bd3
Bb7 $6 {This forces Black to part with his bishop.} (12... Be6 $142 {a la
Janowski. Capablanca-Janowski,San Sebastian 1911.}) (12... Nbd7 13. O-O Bb7 14.
Bf5 Bd6 15. Na4 Nc5 16. Rc1 $14) 13. Na4 $1 Nbd7 (13... Be7 14. Nd4 g6 15. h4
$40) (13... Bd6 $2 14. Bxf6 gxf6 15. Nd4 $18) 14. Nxc5 bxc5 (14... Nxc5 15. a4
$14) 15. a4 (15. O-O $6 a4 $132) 15... Ne4 (15... d4 $5 16. O-O (16. exd4 $2
Re8+ 17. Kf1 Nd5 $5 $44) 16... dxe3 17. fxe3 $40 Ng4 18. Qc2 Ndf6 19. Rae1 $40)
16. O-O Ndf6 17. Ne5 Rc8 $5 {A very tricky move.} (17... c4 $6 18. Bc2 (18.
Bxe4 Nxe4 19. f3 Ng5 $14) 18... c3 19. Ba3 Re8 20. Qd4 $16) 18. f3 $2 {I
failed to see the point of Alex's previous move} (18. Bc2 $142 $1 $16 {keeps
the bishops back.}) 18... c4 $1 {Draw offer.} 19. fxe4 (19. Bc2 c3 20. Ba3 Nd2
21. Bxf8 Nxf1 $36 22. Kxf1 Qxf8 23. Qd4 Qd6 $13) 19... cxd3 20. Nxd3 (20. Qxd3
Nxe4 $13) 20... Nxe4 21. Qg4 f6 22. Qe6+ Kh8 23. Bd4 {Going for b6 after which
a5 will become a target.} Re8 24. Qb6 Qxb6 25. Bxb6 Nd2 26. Rfc1 {After a long
thought.} (26. Rfe1 $5 Nc4 27. Bd4 $16) 26... Nb3 {Active.} (26... Rc4 $2 27.
Nc5 Rc8 28. Bxa5 R8xc5 29. Bxd2) (26... Nc4 $5 27. Bd4 Kg8 28. Nc5 Re7 29. Rc3
Kf7 30. Rac1 Ba8 31. Kf2 h5 $132) 27. Rxc8 Rxc8 28. Ra3 Rc3 29. Nf4 (29. Ne1 d4
$1 30. exd4 Nxd4 31. Ra2 (31. Rxc3 Ne2+ 32. Kf2 Nxc3 33. Bxa5 Nxa4 34. Nd3 Kg8
$11) 31... Nb3 $11) (29. Rxb3 $2 Rxb3 30. Nc5 Rb1+ 31. Kf2 Bc6 $3 $19) 29...
Rc1+ 30. Kf2 Nd2 $6 {Alex could have immediately equalized.} (30... Rc2+ $142
$1 31. Ke1 (31. Kg3 $2 Nd2) 31... Rc1+ 32. Ke2 Rc3 $1 $11) 31. Bxa5 $2 {
At this very moment I sort of became braindead.} ({I had to devise a plan to
push my b-pawn with} 31. Bd4 $142 Rc2 32. Ke1 Nc4 33. Rb3 Kg8 34. Nd3 $1 $40)
31... Nc4 32. Rc3 Ra1 33. Bc7 Rxa4 34. Rc2 (34. Rd3 Ra2+ 35. Kg3 Rb2 36. Nxd5
Kg8 $1 $11) 34... Rb4 35. b6 Nxb6 36. Bxb6 Rxb6 37. Rc7 Kg8 {Draw offer.} 38.
g4 (38. Nh5 g6 39. Nf4 $44 g5 (39... Bc6 40. h4) 40. Nh5 h6 41. g4 Ba6) 38...
Ba6 $1 39. Nxd5 Rb7 40. Rxb7 {Draw agreed on White's offer.} ({Even the pawn
endgame is a draw after} 40. Rxb7 Bxb7 41. e4 Kf7 42. Ke3 Bxd5 43. exd5 Ke7 44.
Kd4 Kd6 45. h4 g6 46. Ke4 f5+ 47. gxf5 gxf5+ $11) 1/2-1/2

[Event "EU-ch U21"]
[Site "Groningen"]
[Date "1985.12.26"]
[Round "8"]
[White "Zysk, Robert"]
[Black "Blatny, Pavel"]
[Result "1/2-1/2"]
[ECO "E51"]
[WhiteElo "2340"]
[BlackElo "2395"]
[Annotator "Blatny,P"]
[PlyCount "71"]
[EventDate "1985.12.18"]
[EventType "swiss"]
[EventRounds "13"]
[EventCountry "NED"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 d5 4. Nf3 Bb4 5. e3 (5. Qb3 c5 6. a3 Bxc3+ 7. bxc3
O-O 8. Bg5 cxd4 9. cxd4 Nc6 $14 {[Montocelli - Marshall, ol Prag 1931]}) (5.
Bg5) 5... O-O 6. Bd3 (6. Be2 c5 7. O-O dxc4 8. Bxc4 b6 9. Qe2 Bb7 10. Rd1 cxd4
11. Nxd4 Qd7 12. Bd2 Nc6 $5 {[Korchnoi - Kindermann, Zьrich 1984]}) 6... dxc4
7. Bxc4 Nc6 8. O-O Bd6 9. Bb5 e5 10. Bxc6 exd4 11. exd4 bxc6 12. Bg5 Re8 13.
Ne5 c5 14. Qf3 cxd4 $5 (14... Rb8 15. Nc6 Bb7 16. dxc5 (16. Nxd8 Bxf3 17. gxf3
cxd4 18. Nc6 dxc3 19. Nxb8 cxb2 20. Rab1 Rxb8 $132) 16... Bxc6 17. Qxc6 Bxh2+
18. Kxh2 Ng4+ {/\ 19...Qxg5}) 15. Qxa8 Bxe5 (15... dxc3 $1 16. Nc6 Bxh2+ $1 17.
Kxh2 $140 Qd6+ 18. Kg1 cxb2 {/\ 19...Ba6}) 16. Ne4 d3 17. Rad1 Bxb2 18. Rd2
Nxe4 19. Bxd8 (19. Qxe4 Rxe4 20. Bxd8 Bd4 21. Bxc7 Ba6 $10) 19... Nxd2 20. Rd1
(20. Qxc8 $2 Nxf1 21. Qd7 Re1 22. h3 d2 23. Bg5 Ba3 $1 24. Bxd2 Nxd2+ 25. Kh2
Bd6+ 26. g3 g6 $17) 20... Nc4 (20... Bg4 $6 21. f3 $6 (21. Qc6 $1 Rxd8 (21...
Re6 $2 22. Qxe6 $1) 22. Rxd2 $16 (22. Rxd2 Bf6 (22... Ba3 23. Qc3) 23. Rxd3 $1)
) 21... Bd4+ 22. Kh1 Ne4 $1 23. fxe4 Bxd1 24. Qd5 c5 $17) 21. Qc6 Rxd8 22. Qxc4
d2 23. Qc2 Bc1 24. Qxc7 Re8 25. h3 h6 26. Kh2 Be6 27. Qxa7 Rd8 28. Qa5 (28. Qc7
Ra8) 28... Rd4 29. Qc3 Rc4 (29... Ra4 {/\ 30...Rxa2}) 30. Qa5 Rd4 31. Qa7 Rc4
32. Qb6 Ra4 33. Qd8+ Kh7 34. Rxd2 Bxd2 35. Qxd2 Rxa2 36. Qe3 1/2-1/2

[Event "Kottnauer Memorial"]
[Site "Prague"]
[Date "1996.??.??"]
[Round "8"]
[White "Hort, Vlastimil"]
[Black "Blatny, Pavel"]
[Result "1/2-1/2"]
[ECO "E51"]
[WhiteElo "2550"]
[BlackElo "2515"]
[Annotator "Blatny,P"]
[PlyCount "43"]
[EventDate "1996.06.??"]
[EventType "tourn"]
[EventRounds "10"]
[EventCountry "CSR"]
[EventCategory "12"]
[SourceTitle "CBM 054"]
[Source "ChessBase"]
[SourceDate "1996.10.01"]
[SourceVersion "1"]
[SourceVersionDate "1996.10.01"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nc3 Bb4 4. e3 Nf6 5. Bd3 Nc6 6. Nf3 dxc4 7. Bxc4 O-O 8.
O-O Bd6 9. h3 (9. Bb5 e5 $1 10. Bxc6 exd4 11. Nxd4 (11. Bxb7 Bxb7 12. Nxd4 Qe8
$44) 11... bxc6 12. Nxc6 Qe8 13. Nd4 Bb7 $44) 9... a6 10. a3 e5 11. Qc2 (11. d5
Ne7 12. e4 Ng6 13. Re1 Bd7 14. b4 Qe7 15. Qb3 Kh8 16. Bf1 h6 17. Bd2 Nh7 18.
Ne2 Ng5 19. Nxg5 hxg5 20. Qf3 Kg8 21. Ng3 Nh4 22. Qe3 f6 $15 {Zsinka,L-Farago,
I/HUN-chT 9394 ;TD 94\03 1994}) 11... h6 12. b4 (12. Ba2 Re8 13. Rd1 Bd7 14.
dxe5 Nxe5 15. Nd4 Qc8 16. Nd5 Nxd5 17. Bxd5 c5 $36 {Pavlovic,M-Mitkov,N/
Vrnjacka Banja (15) ;CBM 23 1991}) 12... exd4 (12... Bd7 $5 13. Bb2 exd4 14.
exd4 Qc8 15. Ne4 Nxe4 16. Qxe4 Bf5 $15 {Medina,M-Mitkov,N/Capablanca mem-B (08)
;EXP 47 1995}) 13. exd4 b5 (13... Ne7 14. Re1 Bf5 $6 15. Qa2 {/\Ne5+/=}) 14.
Bb3 Ne7 $1 {><d5, /^h7-b1,a8-h1} 15. Ne5 (15. Re1 Bb7 16. Ne5 Ned5 $10) 15...
Bb7 16. Qa2 Qe8 $8 17. Re1 (17. Bf4 a5 $5 (17... Bxe5 18. Bxe5 Qc6 19. d5 $8
Nexd5 20. Nxd5 Nxd5 21. Bxd5 Qxd5 22. Qxd5 Bxd5 23. Bxc7 $10) 18. Nxf7 Rxf7 19.
Bxf7+ (19. Bxd6 cxd6 20. Nxb5 Qxb5 21. Bxf7+ Kf8 $13 22. bxa5 $140 $6 Qc6 $1
23. d5 $8 (23. f3 $2 d5 $19) 23... Nexd5 24. Bg6 Rxa5 $17 {_|_}) 19... Qxf7 20.
Qxf7+ Kxf7 21. Bxd6 cxd6 22. Nxb5 Ne8 23. bxa5 Rxa5 $13) 17... a5 $1 18. Bf4 (
18. bxa5 Rxa5 {/\b4|^}) 18... Bxe5 (18... axb4 $2 19. Nxf7 Rxf7 20. Bxd6 cxd6
21. Bxf7+ Qxf7 22. Rxe7 Qxa2 23. Nxa2 (23. Rxa2 Nd5 $1 24. Rxb7 Nxc3 25. Rc2
bxa3 26. Rxc3 a2 27. Rc1 a1=Q 28. Rxa1 Rxa1+ 29. Kh2 Rd1 $10) 23... Rxa3 24.
Rxb7 b3 25. Rxb5 (25. Re7 Nd5 $1) 25... Ne4 26. f3 $1 Nd2 (26... Rxa2 27. Rxa2
bxa2 28. Ra5 Nc3 29. Kf2 Kf7 30. Ke1 Nb5 31. Rxa2 Nxd4 32. Rd2 Nf5 33. g4 Nh4
34. Kf2 $18 {_|_}) 27. d5 $1 Nc4 28. Rc1 $1 bxa2 29. Ra1 Ra4 30. Rb3 Kf7 31.
Rc3 Kf6 32. Rc2 Ke5 33. Raxa2 Rxa2 34. Rxa2 Kxd5 35. Ra7 g5 36. Rh7 $18) 19.
Bxe5 (19. Rxe5 $2 Qc6 20. d5 Qxc3 (20... Qd7) 21. Rxe7 a4 $1 (21... Bxd5 22.
Bxd5 Nxd5 23. Bd2 $1 Qf6 24. Ree1 Nb6 (24... axb4 25. Qxd5 Rad8 26. Qc5 $1 (26.
Qa2 b3 $17) 26... Rxd2 27. axb4 $17) 25. bxa5 Nc4 $15) 22. Bc2 Nxd5 $19) 19...
Qc6 20. d5 $8 Nexd5 21. Nxd5 Nxd5 22. Bxd5 (22. Bxd5 Qxd5 23. Qxd5 Bxd5 24.
Bxc7 $10) 1/2-1/2

[Event "Moscow International-01"]
[Site "Moscow"]
[Date "1925.11.13"]
[Round "4"]
[White "Dus Chotimirsky, Fedor Ivanovich"]
[Black "Marshall, Frank James"]
[Result "0-1"]
[ECO "E51"]
[Annotator "Bogoljubow,E"]
[PlyCount "56"]
[EventDate "1925.11.10"]
[EventType "tourn"]
[EventRounds "21"]
[EventCountry "URS"]
[SourceTitle "HCL"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "2"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. d4 {Bogoljubow:Moskau 1925. S.87} d5 2. Nf3 Nf6 3. c4 e6 4. Nc3 Bb4 5. e3
O-O 6. Bd2 c5 7. Rc1 cxd4 8. Nxd4 e5 9. Nc2 Bxc3 10. Bxc3 Nc6 11. Nb4 $1 Bg4 $2
(11... Nxb4 12. Bxb4) (11... d4 12. Nxc6 bxc6 13. exd4 exd4 14. Bxd4 Re8+ 15.
Be2 Bf5) 12. Qd3 $2 (12. Nxc6 bxc6 13. f3 Bh5 14. Bxe5) 12... d4 13. Nxc6 bxc6
14. exd4 (14. Bd2) 14... exd4 15. Bxd4 Ne4 16. a3 (16. Qxe4 Re8 17. Be5 Qa5+
$19) 16... Re8 $19 17. Be3 Qf6 18. Be2 (18. Qc2 Nxf2 19. Qxf2 Qd4 $1 $19) 18...
Nxf2 $19 19. Qc3 Nxh1 20. Qxf6 gxf6 21. Bxg4 Rxe3+ 22. Kf1 Rd8 23. Bf3 Rd2 24.
Bxc6 Nf2 25. b4 Rxa3 26. c5 Nd3 27. Rb1 Nxb4 28. Be4 Rc3 0-1

[Event "London Classic 7th"]
[Site "London"]
[Date "2015.12.05"]
[Round "2"]
[White "Aronian, Levon"]
[Black "Anand, Viswanathan"]
[Result "1/2-1/2"]
[ECO "E51"]
[WhiteElo "2781"]
[BlackElo "2803"]
[Annotator "CB"]
[PlyCount "67"]
[EventDate "2015.12.04"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "ENG"]
[EventCategory "22"]
[SourceTitle "CBM 170"]
[Source "ChessBase"]
[SourceDate "2016.01.15"]
[SourceVersion "1"]
[SourceVersionDate "2016.01.15"]
[SourceQuality "1"]
[TimeControl "7200+1410"]
[WhiteClock "0:40:01"]
[BlackClock "0:31:37"]

1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Bb4 5. Bd2 $5 O-O 6. e3 c5 7. a3 Bxc3 8.
Bxc3 Ne4 9. Qc2 (9. Bd3 {verliert ein Tempo} Nxc3 10. bxc3 dxc4 11. Bxc4 Nd7) (
9. Rc1 Nxc3 10. Rxc3 cxd4 11. exd4 Nc6 12. Be2 dxc4 13. Bxc4 $11 Qf6 14. O-O
Rd8 15. Rd3 Bd7 16. Re1 Be8 17. Qd2 Ne7 18. Ng5 Nd5 19. Rf3 Qe7 20. Rg3 h6 21.
Nf3 Qf6 22. Re4 Ne7 23. Ne5 Nf5 24. Rd3 Rac8 25. h3 Nd6 26. Rf4 Nxc4 27. Nxc4
Qg5 28. Rg3 Qd5 29. Ne3 Qc6 30. Kh2 Qc1 31. Qb4 Qc7 32. d5 a5 33. Qe4 Rd6 34.
Qe5 g6 35. Qh5 Rxd5 36. Nxd5 exd5 37. Qxh6 Qe5 38. Rh4 Qg7 39. Qxg7+ {1-0 (39)
Alekhine,A-Kmoch,H San Remo 1930}) 9... Nxc3 10. bxc3 Nd7 (10... dxc4 11. Bxc4
Nd7 {wдre ebenso mцglich gewesen. Kommt Schwarz vernьnftig zu b6 und Lb7
sollte die Position vollkommen in Ordnung sein.} 12. O-O b6 13. d5 exd5 14.
Bxd5 Rb8 $11) 11. Bd3 h6 {wurde von Anand im post-mortem kritisiert. In der
entstehenden Struktur ist die Felderschwдche auf g6 ein mцgliches Thema, zudem
ist die erwьnschte Aktivierung Lg4-Lh5-Lg6 nicht mehr mцglich.} 12. cxd5 exd5
13. Qb2 Qe7 14. O-O Nf6 15. Rfb1 {die Stellung ist objektiv wohl ausgeglichen,
jedoch fьr WeiЯ leichter zu spielen. Schwarz plant, den schwachen Lc8
abzutauschen, wдhrend WeiЯ zuerst den Damenflьgel mit a4,a5 einschnьrt, um
danach entweder dort den Druck zu erhцhen versucht oder in einem geeigneten
Moment das Zentrum цffnet.} c4 {Schwarz mцchte unter keinen Umstдnden auf d4
tauschen, nimmt so jedoch ein weiЯes c4 fьr immer aus der Stellung.} 16. Bc2
Ne4 17. a4 Re8 18. a5 Nd6 {Der Springer übernimmt effizient die Deckung des b7
} 19. Qb4 Be6 {Diagramm [#]} 20. Re1 $2 {Aronian ьbersieht vermutlich eine
Taktik in der Variante 22.Db5} ({zum Beispiel} 20. Ne5 $14 {und Weiß kann
weiter Druck aufbauen. Langfristig reicht es freilich nicht, einzig in der
b-Linie anzugreifen, Weiß muss über kurz oder mit f3-e4 oder f3-g4-h4 eine
zweite Front eröffnen. In dieser konkreten Position ist auch der Nachteil der
Schwäche auf g6 deutlich sichtbar, Schwarz kann den Se5 nicht einfach mit f6
befragen.}) 20... Bf5 $1 {wenn dies taktisch geht, ist Anand von allen
Problemen befreit} 21. Bxf5 Nxf5 22. Qxe7 (22. Qb5 Qe6 $1 (22... Rad8 $2 23.
Reb1 Rd7 24. Ne5 Rc7 25. Qxd5 $18) (22... Qd6 23. Ne5 Rab8 24. Nxc4 $1 $16) 23.
Qxb7 $2 Reb8 24. Qc7 Nd6 {und WeiЯ kann wegen der Drohung Tc8 auf der b-Linie
nicht opponieren}) 22... Rxe7 $11 {jetzt kann Schwarz nicht schlechter stehen,
die einzig angreifbare Schwдche b7 ist einfach zu decken, der Springer
verhindert auf d6 ein mцgliches Manцver Tb5 und aufgrund des reduzierten
Materials kann Schwrz nun am Kцnigsflьgel mit den Bauern aufrьcken.} 23. h4 h5
24. g3 {Weiß nimmt bereits eine Auffangstellung ein} Nd6 25. Reb1 Rc8 26. Kg2
f6 27. Ng1 g5 28. Nf3 Ne4 29. Ra3 Rf8 30. Rb5 Rd7 31. Rb2 Rg7 32. Rb5 Rd7 33.
Rb2 Rg7 34. Rb5 {keine Seite kann Fortschritte erzielen} 1/2-1/2

[Event "Sharjah FIDE GP (Women)"]
[Site "Sharjah"]
[Date "2014.09.04"]
[Round "9"]
[White "L'Ami, Alina"]
[Black "Zhao, Xue"]
[Result "0-1"]
[ECO "E51"]
[WhiteElo "2446"]
[BlackElo "2508"]
[Annotator "CB"]
[PlyCount "72"]
[EventDate "2014.08.25"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "UAE"]
[EventCategory "10"]
[SourceTitle "CBM 162"]
[Source "ChessBase"]
[SourceDate "2014.09.17"]
[SourceVersion "1"]
[SourceVersionDate "2014.09.17"]
[SourceQuality "1"]

{A tactically complicated game, despite the symmetricla pawn structures. White
and Black's knights were always hanging in different variations, and only
accurate calculation was necessary to navigate the lines. Both sides erred at
some point, but it was l'Ami's bad decision to not trade dark-squared bishops
that caused her real problems. With the removal of the knight from d4 her
kingside was too weak and Zhao Xue lunged for a quick checkmating attack with
knights and queen.} 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 d5 5. a3 Be7 6. Nf3 O-O
7. Bd3 Nbd7 8. O-O c5 9. Qe2 a6 10. Rd1 dxc4 11. Bxc4 b5 12. Ba2 cxd4 13. Nxd4
Bb7 14. e4 Qc7 15. Bg5 h6 16. Bh4 Bd6 17. Kh1 Bf4 18. Qf3 Be5 19. Rac1 Qb6 20.
Qe3 Ng4 21. Qd2 Bf6 (21... g5 $1 22. Bg3 Bxg3 23. hxg3 e5 24. Nf5 $1 {is
better for Black, probably, but not nearly as much as the computer claims.})
22. Bg3 $2 (22. Bxf6 Ngxf6 23. f3 $11) 22... Rad8 $17 23. f4 e5 (23... Bxd4 24.
Qxd4 Nc5 25. Qg1 b4 $1 $17 {White has problems holding on to all the pawns.})
24. Nf5 exf4 25. Qxf4 Nde5 26. h4 (26. h3 Bg5 27. Qf1 $1 Bxc1 28. Rxc1 {
and Black can't save both knights.}) 26... h5 27. Nd5 Bxd5 28. exd5 g6 29. Nd4
Bg7 30. Qd2 Bh6 31. Bf4 Nd3 32. Bxh6 Qxd4 33. Bg5 Qe5 34. g3 Ndf2+ 35. Kg2 Qe4+
36. Kg1 Qh1# 0-1

[Event "World-ch17 Tournament"]
[Site "The Hague/Moscow"]
[Date "1948.03.09"]
[Round "4"]
[White "Botvinnik, Mikhail"]
[Black "Reshevsky, Samuel Herman"]
[Result "1-0"]
[ECO "E51"]
[Annotator "ChessBase"]
[PlyCount "63"]
[EventDate "1948.03.02"]
[EventType "tourn"]
[EventRounds "25"]
[EventCountry "URS"]
[SourceTitle "MainBase"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "2"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 d5 {Im Vergleichskampf UdSSR-USA, Moskau
1946, spielte Reshevsky 5...O-O (1/2,44). Ergebnis der bisherigen Begegnungen:
Botvinnik:2 Reshevsky:0 Remis:3} 5. a3 Be7 (5... Bxc3+ 6. bxc3 c5 7. cxd5 exd5
8. Bd3 O-O 9. Ne2 b6 10. a4 Ba6 11. Bxa6 Nxa6 12. Ba3 Re8 13. Qd3 c4 14. Qc2
Qd7 15. O-O $16 {Botvinnik-Alexander, UdSSR-England, Radio-match 1946}) (5...
Bd6 $5) 6. Nf3 (6. Bd3 b6 7. Nf3 O-O 8. Qe2 c5 9. O-O Nc6 10. Rd1 cxd4 11. exd4
Ba6 12. Bg5 dxc4 13. Bxc4 Bxc4 14. Qxc4 Rc8 15. Qa6 Nd5 16. Bxe7 Ndxe7 $10 {
Fine-Keres, UdSSR-USA, Moskau 1946}) 6... O-O (6... b6 7. Bd3 Bb7) 7. b4 $6 (7.
Bd3 b6 {Siehe Fine-Keres}) 7... Nbd7 $6 (7... a5 8. b5 c5 $132) 8. Bb2 c6 (8...
a5 $6 9. c5 $1 $16) 9. Bd3 (9. c5 $6 Qc7 {/\ e5=}) (9. Qc2 $5 {Euwe}) (9. Qb3
$5 {Golombek}) 9... dxc4 $6 (9... Bd6 10. c5 (10. O-O Qe7 {/\ e5 ohne dc})
10... Bc7 {/\ Qe7, e5 =/=/+}) 10. Bxc4 Bd6 (10... Qc7 {>= Euwe, ?! Golmbek} 11.
Rc1) (10... a5 11. b5 c5 12. O-O Nb6 13. Bd3 $16 {>< Bc8}) 11. Ne2 $2 (11. Qc2
$1 e5 12. Ba2 Qe7 13. Bb1 $40) (11. O-O e5 12. Qc2 exd4 13. exd4 Nb6 14. Ba2
$14) 11... a5 $1 (11... Qc7 12. Ng3 e5 13. Nf5 $16) 12. b5 Nb6 13. Bd3 cxb5 14.
Bxb5 {Zeit:1:02} Bd7 $15 {Zeit:1:06 -> << ><c4 Entwicklungsvorsprung} 15. Qb3
$6 {Zeit:1:17} (15. Qd3 Na4 16. Bc1) 15... a4 {Zeit:1:21} 16. Qd3 Ra5 17. Nc3 (
17. Bxd7 Qxd7 {/\ Qb5} 18. Bc3 Rb5 (18... Qb5 19. Qb1 Qxb1+ 20. Rxb1 Ra6 $16)
19. O-O Rc8 $16) 17... Qe8 (17... Nfd5 18. O-O) 18. Bxd7 Qxd7 19. O-O {Zeit:1:
32} (19. e4 Rc8 $1 20. e5 $2 Bxe5 $1) 19... Rc8 {Zeit:1:42} 20. e4 $2 (20. Nd2
$1 $15) (20. Rfb1 $5 Nc4 21. Bc1 $15) 20... Nc4 $17 21. Bc1 e5 $3 22. Rd1 (22.
d5 b5 23. Nh4 b4 24. axb4 Bxb4 $19 {Golombek}) 22... exd4 23. Qxd4 Qe6 (23...
Qc7 $5 {/\ Ne5-+ Golombek}) 24. Ra2 h6 25. h3 {Zeit:2:14} Ra6 {/\ Ne5 Zeit:2:20
} (25... Rh5 $5 26. Nd5 (26. Re2 b5) 26... Nxe4 $1 27. Re2 Rxd5 $1 28. Qxd5
Qxd5 29. Rxd5 Nc3) (25... Bc5 $5) (25... Ne5 $2 26. Qxd6 Nxf3+ 27. gxf3 Qxh3
28. Qg3 Qxg3+ 29. fxg3 Rxc3 30. Rd8+ Kh7 31. Bd2 $16) 26. Nd5 $1 Nxe4 (26...
Nxd5 27. exd5 Qf5 $17) 27. Re2 f5 28. g4 Bc5 $4 {Zeit:2:26} (28... Ne5 $5 29.
Nxe5 Bxe5 30. gxf5 Bxd4 31. fxe6 Rxe6 $19 {Golombek}) (28... Qf7 $17) (28...
Ng5 $1 29. Nxg5 (29. Rxe6 Nxf3+ 30. Kg2 Nxd4 31. Rxd4 fxg4 $19) (29. Qd3 Nxf3+
30. Qxf3 fxg4 $19) 29... Qxe2 30. Nf6+ gxf6 31. Qd5+ Kh8 32. Nf7+ Kh7 33. Qxf5+
(33. Ng5+ fxg5 34. Qf7+ Kh8 35. Qf6+ Kg8 36. Qg6+ Kf8 $19) (33. Nxh6 Ne5 $19)
33... Kg7 34. Bxh6+ Kxf7 $19 35. Qh7+ Ke8 36. Qg8+ Kd7) 29. gxf5 Qxf5 $2 (29...
Bxd4 30. fxe6 Bxf2+ 31. Rxf2 (31. Kg2 Rxe6) 31... Nxf2 32. Kxf2 (32. Re1 Nd3
$10) 32... Rxe6 $10) 30. Qxe4 (30. Qxc5 $2 Rxc5 31. Ne7+ Kh7 32. Nxf5 Nc3 $17)
30... Qxh3 (30... Rg6+ 31. Kh2 Bd6+ 32. Bf4 $18) 31. Nh2 Rcc6 32. Nf4 $18 {
Zeitьberschreitung. / loses on time Anmerkungen, wenn nicht anders vermerkt:
Keres und Flohr} 1-0

[Event "Lazne Bohdanec"]
[Site "Lazne Bohdanec"]
[Date "1996.??.??"]
[Round "5"]
[White "Babula, Vlastimil"]
[Black "Blatny, Pavel"]
[Result "1-0"]
[ECO "E51"]
[WhiteElo "2540"]
[BlackElo "2515"]
[Annotator "Dautov,R"]
[PlyCount "67"]
[EventDate "1996.01.??"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "CZE"]
[EventCategory "10"]
[SourceTitle "CBM 051"]
[Source "ChessBase"]
[SourceDate "1996.04.01"]
[SourceVersion "1"]
[SourceVersionDate "1996.04.01"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nc3 Bb4 4. e3 Nf6 5. Bd3 O-O 6. Nf3 Nc6 7. O-O dxc4 8.
Bxc4 Bd6 9. Bb5 e5 10. Bxc6 exd4 11. exd4 (11. Nxd4 bxc6 12. Nxc6 Qe8 $44)
11... bxc6 12. Bg5 h6 (12... c5 $2 13. Ne4 $16) (12... Bf5 13. Re1 h6 14. Bh4
Re8 15. Rxe8+ Qxe8 16. Bxf6 gxf6 17. Nh4 $14 {Moiseev-Kozma/1954}) 13. Bh4 Bg4
$2 (13... Re8 14. Qd3 c5 $1 (14... g5 15. Bg3 Nh5 16. Rfe1 Nxg3 17. hxg3 Be6
18. Ne5 $14 {Aronin-Chistiakov/URS/1952}) 15. Bxf6 Qxf6 16. Ne4 Qf4 17. dxc5
Bf8 18. Ng3 Bg4 19. Rac1 Rad8 20. Qc4 Qxc4 21. Rxc4 Be6 $10 {Michenka,
J-Gipslis,A/Ostrava 1993}) 14. h3 Bh5 15. g4 $1 Bg6 16. Ne5 c5 {N} (16... Bxe5
17. dxe5 Qxd1 18. Raxd1 Nd5 19. Nxd5 cxd5 20. Rxd5 Be4 21. Rd4 Bf3 22. Rc1 $16
{Portisch,L-Andersson,U/Praha 1970}) 17. f4 $1 (17. Nxg6 fxg6 $13) (17. Nd5
Bxe5 18. dxe5 Qxd5 19. exf6 Qxd1 20. Raxd1 $14) 17... cxd4 (17... Re8 18. Nc6
Qd7 19. d5 Re3 (19... Ne4 20. f5 Nxc3 21. bxc3 Bh7 22. Qf3 $16 {ץh7}) 20. f5
$1 (20. Rf3 $2 Nxg4 $1 $19) 20... Rxh3 (20... Bh7 21. Rf3 $16) 21. Bxf6 Rg3+ (
21... gxf6 22. Ne4 Kg7 23. fxg6 $18) 22. Kf2 Bxf5 23. Ne7+ $1 Bxe7 24. Kxg3 $18
) 18. Qxd4 $16 Bxe5 $2 (18... c5 19. Qf2 $16 Qc7 20. Bxf6 gxf6 21. Nd5 Qd8 22.
Nc6 $18) (18... Be7 19. Qc4 Bh7 20. Rad1 $16) (18... Re8 19. Rae1 $16 (19. Nxg6
fxg6 20. Rae1 Rxe1 21. Rxe1 Qf8 $14) (19. Rad1 Bc2 20. Rd2 $2 (20. Rc1 $16)
20... Bc5 21. Qxc5 Qxd2 $17)) 19. Qxd8 Rfxd8 20. fxe5 $18 Rd3 21. exf6 Rxh3 22.
Kg2 $1 Rxh4 23. Kg3 Bd3 24. Kxh4 Bxf1 25. Rxf1 Rb8 26. b3 g6 27. Kg3 c6 28. Rd1
Re8 29. Kf4 g5+ 30. Kf5 Re3 31. Ne4 Rf3+ 32. Ke5 Rf4 33. Rd8+ Kh7 34. Rf8 (34.
Rf8 Kg6 35. Rg8+ Kh7 36. Rg7+ $18) 1-0

[Event "Stara Zagora zt-A"]
[Site "Stara Zagora"]
[Date "1990.??.??"]
[Round "2"]
[White "Lechtynsky, Jiri"]
[Black "Dimitrov, Vladimir"]
[Result "0-1"]
[ECO "E51"]
[WhiteElo "2430"]
[BlackElo "2455"]
[Annotator "Ftacnik,L"]
[PlyCount "122"]
[EventDate "1990.02.??"]
[EventType "tourn"]
[EventRounds "13"]
[EventCountry "BUL"]
[EventCategory "9"]
[SourceTitle "CBM 017"]
[Source "ChessBase"]
[SourceDate "1990.08.01"]
[SourceVersion "1"]
[SourceVersionDate "1990.08.01"]
[SourceQuality "1"]

1. Nf3 Nf6 2. c4 e6 3. Nc3 d5 4. d4 Bb4 5. e3 O-O 6. a3 Bxc3+ 7. bxc3 c5 8. Bb2
Nc6 9. Bd3 dxc4 10. Bxc4 Qc7 11. Ba2 e5 12. Qc2 e4 13. Nd2 Bf5 14. f3 Bg6 15.
Nxe4 (15. f4 $5) 15... Nxe4 16. fxe4 Rae8 17. O-O Bxe4 18. Qe2 Qd6 19. Qg4 Bd3
20. Rfe1 Re4 21. Qf3 Rh4 22. Qg3 $2 (22. h3 Be4 23. Qf2 Rh5 24. Rf1 Qg6 25. Kh2
$13) 22... Qxg3 23. hxg3 Rg4 24. dxc5 $2 (24. c4 $5) 24... Bc4 $1 25. Bxc4 Rxc4
$19 26. a4 Re8 27. Rad1 Rxc5 28. Rd7 b6 29. Red1 h5 30. Rc7 Rxe3 31. c4 Re2 32.
Bc3 Rxc4 33. Rd3 Re7 34. Rxe7 Nxe7 35. Bb2 Rxa4 36. Rd8+ Kh7 37. Rd7 Re4 (37...
Nf5 $5 38. Rxf7 Kg6 $19) 38. Rxa7 Kg6 39. Kf2 Re6 40. Rb7 Nf5 41. Kf3 f6 42. g4
Re3+ 43. Kf4 hxg4 44. Kxg4 Rb3 (44... Rg3+ 45. Kf4 Rxg2 $19) 45. Bc1 b5 46. Kf4
Rb1 47. Ba3 Rg1 48. Kf3 Nd4+ 49. Kf2 Rb1 50. g4 Rb3 51. Bd6 Ne6 52. Ke2 Nd8 53.
Re7 Nf7 54. Bf4 b4 55. Bd2 Rg3 56. Re4 b3 57. Rb4 b2 58. Rxb2 Rxg4 59. Rb7 Ne5
60. Bb4 Rg2+ 61. Kf1 Rb2 {Ftacnik,L} 0-1

[Event "Olympiad-10 Final A"]
[Site "Helsinki"]
[Date "1952.08.21"]
[Round "1"]
[White "Szabo, Laszlo"]
[Black "Keres, Paul"]
[Result "1-0"]
[ECO "E51"]
[Annotator "Knaak,R"]
[PlyCount "69"]
[EventDate "1952.08.21"]
[EventType "team-tourn"]
[EventRounds "9"]
[EventCountry "FIN"]
[SourceTitle "100 Jahre Schach"]
[Source "ChessBase"]
[SourceDate "2000.04.19"]
[SourceVersion "1"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]
[WhiteTeam "Hungary"]
[BlackTeam "Soviet Union"]
[WhiteTeamCountry "HUN"]
[BlackTeamCountry "URS"]

{Bei ihrer ersten Teilnahme an einer Schacholympiade ьberhaupt hatte die
Sowjetunion, ohne Botvinnik antretend, unerwartete Probleme ehe der Sieg mit 1,
5 Brettpunkten Vorsprung vor Argentinien feststand. Mitverantwortlich war
dafьr wohl auch das Resultat von Paul Keres, der sich am Spitzenbrett mit 6,5
aus 12 begnьgen musste.} 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 d5 5. a3 Be7 6.
Nf3 O-O 7. Bd3 b6 8. O-O c5 9. b3 Nc6 10. Bb2 cxd4 11. exd4 Ba6 12. Rc1 Rc8 13.
Nb5 Bb7 14. Re1 Re8 15. Nc3 Bf8 16. Ne2 $5 Ne4 ({Die Alternative} 16... dxc4
17. bxc4 {mag Keres auch nicht behagt haben.}) 17. Ng3 Nxg3 18. hxg3 dxc4 19.
bxc4 Nb8 $2 {Der kleine Moment, in dem der Springer nicht mitspielt, genьgt!}
20. d5 $1 Nd7 $6 {Verliert klar!} (20... exd5 21. Rxe8 Qxe8 {Aber} 22. Ng5 $1 {
ist die Lцsung.} (22. cxd5 {ist natьrlich weniger verpflichtend.}) (22. Bxh7+
$5 Kxh7 {Wahrscheinlich hat WeiЯ nicht mehr als Remis.} 23. Qd3+ (23. Ng5+ Kg6
24. Qd3+ f5 $1 (24... Kxg5 25. Qh7 $18) 25. g4 Qd7 26. Re1 Kxg5 27. Re5 Kf6 $1
{Wirklich der einzige Zug!} 28. Rxd5+ (28. Rxf5+ Ke7 29. Qe3+ Kd6 30. Qf4+ Kc5
$13) 28... Ke7 29. Rxd7+ Nxd7 {Schwarz hat immer nur einen Zug, erreicht aber
noch eine akzeptable Stellung.}) 23... f5 (23... Kh6 $2 24. Re1 $18) 24. Ng5+ (
24. Qxf5+ Qg6 25. Ng5+ Kh6 26. Nf7+ Kh7 $11) 24... Kg6 (24... Kh6 $5) 25. g4
Qd7 {siehe unter A)}) 22... h6 (22... g6 $2 23. Bxg6 $3 $18 {[%cal Yd1d4]}) (
22... f6 $2 23. Bxh7+ Kh8 24. Qg4 $18) 23. Bh7+ Kh8 24. Qh5 d4 (24... f6 25.
Bg6 Qc6 26. Nf7+ Kg8 27. Nxh6+ gxh6 28. Bf7+ Kh8 29. Bxd5 $18) 25. Bxd4 f6 26.
Bg6 {WeiЯ sollte gewinnen.}) 21. dxe6 Rxe6 22. Rxe6 fxe6 23. Qc2 $1 {Dieser
schlichte Zug besiegelt das schwarze Schicksal.} Bxf3 ({Auch} 23... h6 24. Bh7+
Kh8 25. Nh4 Nf6 (25... Bc5 26. Rd1 $18) 26. Ng6+ Kxh7 27. Nxf8+ Kg8 28. Nxe6 {
bietet Schwarz kaum eine Rettungschance.}) (23... g6 24. Bxg6 $18) 24. Bxh7+
Kh8 25. gxf3 {Fьr den Minusbauern hat Schwarz zusдtzlich noch eine miserable
Stellung.} Rc5 26. Kg2 Rh5 27. Bg6 Rh6 28. Rd1 Qg5 29. Be8 Ne5 30. Qe4 Qe7 31.
Ba4 Nf7 32. Rd7 Qc5 33. Rxf7 Kg8 34. Rf4 Bd6 35. Rh4 1-0

[Event "Enghien les Bains 2nd"]
[Site "Enghien les Bains"]
[Date "1997.03.21"]
[Round "8"]
[White "Kortschnoj, Viktor Lvovich"]
[Black "Chabanon, Jean Luc"]
[Result "1-0"]
[ECO "E51"]
[WhiteElo "2635"]
[BlackElo "2435"]
[Annotator "Knaak,R"]
[PlyCount "71"]
[EventDate "1997.03.14"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "FRA"]
[EventCategory "10"]
[SourceTitle "CBM 058"]
[Source "ChessBase"]
[SourceDate "1997.06.01"]
[SourceVersion "1"]
[SourceVersionDate "1997.06.01"]
[SourceQuality "1"]

1. Nf3 Nf6 2. c4 e6 3. Nc3 d5 4. d4 Bb4 5. e3 O-O 6. a3 $5 {Indem WeiЯ diesen
Zug bereits jetzt spielt, kann er einige weniger erfolgversprechende Varianten
vermeiden.} Bxc3+ 7. bxc3 c6 (7... Nc6 {wird seit Fischer-Reshevsky m 1961
empfohlen. Es gibt kaum Erfahrungen mit diesem Zug.} 8. Bd3 Na5 $1 9. Nd2 c5
10. O-O b6 11. cxd5 exd5 12. f3 Re8 $11 13. Re1 Be6 14. Ra2 Rc8 15. Nf1 cxd4
16. cxd4 h5 17. h3 h4 18. Rf2 Qd7 19. e4 dxe4 20. fxe4 Bb3 21. Qd2 Bc4 22. Bc2
Nb3 23. Bxb3 Bxb3 24. e5 Nd5 25. Qg5 Qe7 26. Qg4 Rc6 27. Bg5 Qxa3 28. Qd7 {
1-0 Reshevsky,S-Fischer,R/New York/Los Angeles m 1961}) (7... c5 {ist der
Versuch in die bekannten Varianten von E59 ьberzugehn.} 8. Bb2 $1 Nc6 9. Bd3
dxc4 10. Bxc4 Qc7 11. Rc1 $1 {Diesen Zug hat WeiЯ nicht wenn statt Bb2 der Zug
0-0 erfolgt wдre.}) 8. a4 Re8 9. Bb2 b6 10. cxd5 Qxd5 {Letztlich will Schwarz
doch c5 spielen - irgendwie unlogisch.} 11. Qc2 (11. Bd3 Ba6 $11) 11... Bb7 (
11... Ba6 $6 12. c4) 12. Bd3 c5 13. e4 $5 {Das Bauernopfer sollte direkt zum
Remis fьhren.} (13. c4 Qh5 14. dxc5 Nbd7 15. cxb6 axb6 $44) (13. Ne5 Qxg2 14.
Rf1) 13... Nxe4 14. c4 Qf5 15. O-O Na6 16. Ba3 Nb4 $2 (16... Qf4 $1 17. Bc1 (
17. Rae1 Nf6 $19) 17... Qf5 18. Ba3 $11 (18. Bd2 $2 cxd4 $1 {[%cal Ya6c5]} 19.
Nxd4 Qg6 20. f3 Nac5 21. fxe4 Rad8 $19)) 17. Bxb4 cxb4 18. Rfe1 $16 b3 19. Qb1
Rec8 20. Bxe4 Bxe4 21. Rxe4 b2 22. Ra2 Rxc4 23. Rxb2 Rac8 24. Re1 Qxb1 25.
Rbxb1 Rxa4 26. Kf1 h6 27. Ra1 Rcc4 28. h3 b5 29. Ke2 Rc2+ 30. Ke3 Rac4 31. Ne5
R2c3+ 32. Nd3 f5 33. Rec1 Rxc1 34. Nxc1 b4 35. Nd3 b3 36. Rxa7 1-0

[Event "POL-ch"]
[Site "Warsaw"]
[Date "2018.05.19"]
[Round "8"]
[White "Krasenkow, Michal"]
[Black "Wojtaszek, Radoslaw"]
[Result "0-1"]
[ECO "E51"]
[WhiteElo "2628"]
[BlackElo "2750"]
[Annotator "Krasenkow,M"]
[PlyCount "57"]
[EventDate "2018.05.12"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "POL"]
[EventCategory "16"]
[SourceTitle "CBM 185"]
[Source "ChessBase"]
[SourceDate "2018.07.13"]
[SourceVersion "1"]
[SourceVersionDate "2018.07.13"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Nf3 d5 5. e3 O-O 6. Bd2 b6 7. cxd5 exd5 8. Rc1
Bb7 9. Bd3 Be7 (9... a6 {is the main continuation here (the bishop retreats to
d6 in that case). The idea of the text move is to continue ...c7-c5.}) 10. Ne5
c5 11. O-O Nc6 $1 {This active development of the knight is appropriate here.}
(11... c4 12. Bb1 a6 {1/2 (38) Sundararajan,K (2434)-Prasad,D (2284) Kolkata
IND 2018 gives White attacking chances after} 13. f4 ({the prophylactic} 13. a4
$5 {is also interesting}) 13... b5 14. Qf3 {etc.}) (11... Nbd7 12. f4 {is
pleasant for White as his centre is not under attack. If} Ne4 {then} 13. Nxe4
dxe4 14. Bb5 $5 Nxe5 15. dxe5 a6 16. Be2 f5 17. Qb3+ Kh8 18. Rfd1 Qc7 19. Bc3
$14 {[%cal Ye5e6] 1-0 (41) Sandipan,C (2573)-Koustav,C (2364) Bhubaneswar 2018}
) 12. f4 $2 {[%mdl 16384] But here it is wrong. White just weakens his
position. I somehow mixed up variations but later I couldn't even find out
which line I had in mind!} (12. Qa4 Nxe5 13. dxe5 {1/2 (88) Ivkov,B-Filip,M
Palma de Mallorca 1970} Nd7 14. f4 c4 15. Bb1 Nc5 $15) (12. Ba6 Qc8 13. Bxb7
Qxb7 14. Nxc6 Qxc6 15. dxc5 {1/2 (17) Najdorf,M-Petrosian,T Siegen 1970}) (12.
Nxc6 Bxc6 13. dxc5 bxc5 14. Na4 d4 15. Nxc5 dxe3 16. Bxe3 Qd5 17. f3 Rfd8 18.
Bb1 Qe5 19. Qe1 Qxb2 20. Ne6 Rd6 $13 {0-1 (33) Zhukova,N (2360)-Velcheva,M 
(2315) Halle 1995}) (12. Be1 $5 {is the most accurate move but White can
hardly claim an advantage anyway. Further analysis is required, though:} a6 (
12... cxd4 13. Nxc6 Bxc6 14. Ne2 $1 {is White's idea; he keeps a small plus
due to Black's isolated central pawn, e.g.} Bb7 15. Nxd4 Ne4 16. Nf5 $14 ({
rather than} 16. Bxe4 dxe4 17. Bc3 Qd7 18. Qh5 g6 19. Qh6 Bf6 20. Rcd1 Rfd8 21.
Nb5 Qe7 22. Qf4 Bg5 23. Qe5 Qxe5 24. Bxe5 Ba6 $11 {1/2 (56) Aczel,G (2553)
-Kantor,G (2506) Budapest HUN 2017})) (12... Nb4 13. Be2 Rc8 14. Nb5 c4 $6 (
14... a6 15. Na7 Rc7 16. Bxb4 cxb4 17. Nac6 $14) (14... a5 $5 $13) 15. Nxa7 Ra8
16. Nb5 (16. a3 Rxa7 17. axb4 b5 18. Ra1 Qb6 $11 {1-0 (33) Sandipan,C (2574)
-Tate,A (2297) Caleta 2015}) 16... Nxa2 17. Ra1 $16 {[%cal Yb2b3]}) 13. f3 (13.
f4 $5) 13... b5 $13 (13... cxd4 $6 14. Nxc6 Bxc6 {1-0 (59) Yu Yangyi (2759)
-Wang Hao (2710) Tianjin CHN 2018} 15. Ne2 $14)) 12... cxd4 13. Nxc6 Bxc6 14.
exd4 b5 $6 {This pawn sacrifice is unnecessary.} (14... Ne4 {may be a bit
premature in view of} 15. Be3) ({but} 14... Rc8 {gives Black an excellent
position.}) 15. f5 $2 {It was quite possible to capture the pawn:} (15. Nxb5
Qb6 (15... Bxb5 16. Bxb5 Qb6 17. Qe2 a6 18. Bc6 Rac8 19. Qxe7 Rxc6 20. Qb4 {
- Black has good compensation but he is hardly better}) 16. Ba5 (16. Qe2 $5)
16... Qxa5 17. Rxc6 Rfc8 18. Rxc8+ Rxc8 19. Qe2 {, and White should equalise})
({Or} 15. Bxb5 Bxb5 16. Nxb5 Qb6 17. Qe2 {with a similar position.}) {After
the text move Black obtains a clear advantage "free of charge".} 15... Qb6 16.
Ne2 b4 {[%cal Yc6b5]} 17. Bg5 (17. Bf4 {[%cal Yf4e5] was relatively better.})
17... h6 18. Bxf6 $2 {A poor idea. Black obtains the bishop pair, the e-file,
and White's d4 pawn becomes weak.} (18. Bf4 $142) 18... Bxf6 19. Kh1 Rac8 20.
Nf4 Bb7 $1 {White overlooked this simple move, after which his position is
hopeless.} (20... Bxd4 $2 21. f6 $1 Bxf6 22. Qg4 {[%cal Rf4h5,Rg4f5] gives
White excellent counter-chances;}) ({Or} 20... Qxd4 $6 21. Ba6 {, and White
should not lose, e.g.} Qxd1 22. Rfxd1 Bxb2 $5 23. Rb1 Ba4 24. Bxc8 Bxd1 25.
Nxd5 Bf6 26. Nxf6+ gxf6 27. Ba6 Bc2 28. Rxb4 Bxf5 29. h3 {etc.}) 21. Rxc8 Rxc8
22. Nh5 Qxd4 23. Nxf6+ Qxf6 {Black has an extra pawn and positional advantage.
White's attempt to get some counterplay meets a tactical refutation.} 24. Qb3
a5 25. a3 d4 $1 {[%mdl 64]} 26. Rd1 (26. axb4 Qg5 27. Rg1 Qxg2+ 28. Rxg2 Rc1+)
26... Qg5 27. Bf1 Rc1 28. axb4 axb4 29. Rxc1 {A very bad game for White and an
easy win for Black.} (29. Rxc1 Bxg2+ $19) 0-1

[Event "Gibraltar Masters 17th"]
[Site "Caleta"]
[Date "2019.01.25"]
[Round "4"]
[White "Nakamura, Hikaru"]
[Black "Gavrilescu, David"]
[Result "1-0"]
[ECO "E51"]
[WhiteElo "2749"]
[BlackElo "2479"]
[Annotator "Krasenkow,M"]
[PlyCount "115"]
[EventDate "2019.01.22"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "GGB"]
[SourceTitle "CBM 188 Extra"]
[Source "ChessBase"]
[SourceDate "2019.02.26"]
[SourceVersion "1"]
[SourceVersionDate "2019.02.26"]
[SourceQuality "1"]

{[%evp 0,115,80,63,21,-7,0,4,4,-6,33,-24,-31,-31,-3,-31,17,23,26,22,31,29,28,
42,58,21,38,44,37,38,43,34,30,11,31,21,30,26,30,29,42,34,48,48,36,30,33,31,33,
35,36,47,70,52,66,58,87,92,95,68,75,106,113,100,85,101,116,123,131,116,137,137,
141,141,141,141,141,132,141,107,131,125,122,85,120,141,148,126,148,126,126,126,
126,126,126,125,167,183,195,167,280,137,387,359,335,470,629,830,992,1002,1002,
1002,1002,1012,1259,1366,1366,1817]} 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Bb4 5.
Qa4+ Nc6 6. e3 O-O 7. Qc2 dxc4 8. Bxc4 Bd6 {The most popular move although} (
8... e5 {is possible at once.}) 9. O-O (9. Nb5 a6 10. Nxd6 cxd6 11. O-O b5 12.
Be2 (12. Bxb5 Nxd4 13. Nxd4 axb5 14. Nxb5 $4 Ba6) 12... Bb7 13. Bd2 Rc8 $11 {
1/2 (19) Kuzubov,Y (2660)-Lupulescu,C (2601) Sovata 2018}) (9. Ng5 h6 10. Nge4
e5 11. Nxd6 cxd6 12. d5 Ne7 13. e4 Ng6 14. O-O Nh5 15. Qd1 Nf6 16. Kh1 Bd7 17.
a4 Rc8 18. b3 a6 $13 {0-1 (35) Moranda,W (2533)-Moiseenko,A (2632) Polanica
Zdroj 2008}) (9. a3 e5 10. d5 (10. h3 Bd7 11. O-O h6 12. b4 exd4 13. exd4 Qc8
14. Nd5 Nxd5 15. Bxd5 Bf5 $11 {1/2 (38) Nakamura,H (2787)-So,W (2770) Paris
2016}) 10... Ne7 11. h3 (11. e4 c6 12. Bg5 cxd5 13. Bxf6 dxc4 14. Bxe5 {
1-0 (56) Michalik,P (2576)-Saric,I (2661) Jerusalem 2015} Bxe5 15. Nxe5 Qc7 16.
Nf3 Bg4 $15) (11. O-O Ng6 12. b4 Bd7 13. Ng5 Qe7 14. f3 a5 15. b5 Kh8 16. Nge4
Ne8 17. Nxd6 Nxd6 18. Ne4 f5 19. Nxd6 cxd6 20. a4 Rac8 21. Ba3 f4 22. e4 Nh4
$132 {1/2 (43) Sandipan,C (2628)-Neelotpal,D (2471) New Delhi 2012}) 11... Ng6
12. O-O h6 13. Bd3 Re8 14. Re1 Bd7 15. Bd2 c6 16. Ne4 Bf8 17. dxc6 Bxc6 18.
Nxf6+ Qxf6 19. Be4 Rac8 20. Bc3 Bxe4 21. Qxe4 Qc6 $11 {0-1 (56) Xu,Y (2538)
-Najer,E (2683) Moscow 2018}) 9... e5 (9... a6 10. a3 (10. Rd1 $5) 10... Bd7
11. Rd1 e5 12. d5 Ne7 13. h3 Ng6 14. b4 Qe7 15. Bd3 c6 16. dxc6 Bxc6 17. Ne4
Bxe4 18. Bxe4 Rac8 19. Qb1 Nxe4 20. Qxe4 Rc6 $11 {0-1 (45) Kovalenko,I (2642)
-Predke,A (2477) Moscow 2014}) 10. h3 (10. dxe5 Nxe5 11. Nxe5 Bxe5 12. h3 c6
13. a4 a5 14. b3 Re8 15. Bb2 Be6 16. Rfd1 Qb6 17. Bxe6 Rxe6 18. Rd3 Rae8 $11 {
1-0 (42) Shirov,A (2696)-Hou,Y (2609) Tromsoe 2013}) (10. d5 Nb4 $1 11. Qb1 e4
12. Nxe4 Nxe4 13. Qxe4 Re8 14. Qb1 Bg4 15. Nd4 Qh4 16. g3 Qh5 17. e4 Bc5 18.
Be3 Bxd4 19. Bxd4 Bf3 $36 {1/2 (27) Barria Zuniga,D (2438)-Sanikidze,T (2531)
Navalmoral 2011}) 10... a6 {Black has a lot of good alternatives leading to
rough equality:} (10... Bd7 $5 11. Rd1 (11. d5 Ne7 12. Rd1 h6 13. b3 a6 14. a4
Ng6 15. Bb2 Kh8 16. Bd3 Ne7 17. Rac1 Qe8 18. Qe2 Rb8 19. Bb1 b5 $132 {0-1 (66)
Bu,X (2710)-Yu,Y (2734) Shenzhen 2015}) 11... Qc8 12. dxe5 Nxe5 13. Nxe5 Bxe5
14. e4 Re8 (14... Bxh3 15. gxh3 Qxh3 16. f3 Qxf3 17. Qg2 Qxg2+ 18. Kxg2 Rfe8
19. Kf3 Bxc3 20. bxc3 Rxe4 21. Bd3 Re6 22. Bf4 Rae8 $13 {1-0 (62) Swiercz,D 
(2614)-Moiseenko,A (2698) Germany 2014}) 15. f3 c6 16. Be3 Be6 17. Bb3 Bc7 18.
Rd3 Bb6 19. Bxb6 axb6 20. Bxe6 Qxe6 21. Rad1 b5 22. a3 Qe7 23. Qd2 b4 24. axb4
Qxb4 25. Kh2 Qe7 26. Re1 Rad8 $11 {1/2 (40) Wang,Y (2730)-Bu,X (2723) Danzhou
2016}) (10... Qe7 11. a3 Bd7 (11... h6 12. b4 e4 13. Nd2 Bf5 14. Re1 Rae8 15.
Bb2 Qd7 16. Nb5 Ne7 17. Nf1 Ned5 $11 {1/2 (37) Malek,D (2405)-Cuenca Jimenez,J
(2490) Germany 2018}) 12. d5 Na5 13. Bd3 c5 14. dxc6 Nxc6 15. Rd1 Rac8 16. Bd2
h6 17. Rac1 Rfd8 18. Qb1 Be6 $11 {0-1 (41) Najer,E (2681)-Fressinet,L (2658)
Germany 2009}) (10... exd4 11. exd4 Nb4 $5 12. Qb1 (12. Qd1 Bf5 13. a3 Nc6 14.
Re1 h6 15. Ne5 Bxe5 16. dxe5 Qxd1 17. Nxd1 Nd7 $11 {1/2 (37) Chiburdanidze,M 
(2506)-Kosintseva,T (2536) Ningbo 2009}) 12... c6 13. Bg5 Be7 14. Re1 Nbd5 15.
Qd3 Be6 16. a3 Nc7 17. Bxe6 Nxe6 18. Rad1 Nd5 19. Nxd5 cxd5 20. Bxe7 Qxe7 $11 {
1/2 (34) Fernandez,D (2464)-Yagubi,A (2379) Livny 2017}) 11. a3 (11. dxe5 Nxe5
12. Nxe5 Bxe5 13. Bd3 Qe7 14. e4 {1/2 (72) Gajewski,G (2595)-Bluebaum,M (2620)
Germany 2018} Rd8 $11) 11... h6 (11... b5 12. Ba2 (12. Be2 Bb7 13. Rd1 exd4 14.
exd4 Ne7 15. Ne5 {1/2 (15) Prusikin,M (2545)-Parligras,M (2633) Bad Wiessee
2012}) (12. Bd3 Bb7 13. Ne4 h6 14. dxe5 Nxe5 15. Nxe5 Bxe5 16. Nc5 $14 {
1-0 (28) Chuchelov,V (2375)-Gogichaishvili,G (2310) Khabarovsk 1990}) 12... Bb7
13. Rd1 exd4 14. exd4 b4 15. Ne4 Nxe4 16. Qxe4 $14 {1/2 (45) Kanter,E (2368)
-Ly,M (2506) Dubai 2016}) (11... Qe7 12. b4 Bd7 13. Bb2 h6 14. Nd5 Nxd5 15.
Bxd5 exd4 16. exd4 Qf6 17. Rae1 $14 {1-0 (22) Bogner,S (2556)-Vuilleumier,A 
(2362) Flims 2016}) 12. Rd1 exd4 (12... Qe7 $5 13. d5 e4 14. Nxe4 Nxe4 15. dxc6
bxc6 16. b3 Ng5 17. Nxg5 Qxg5 18. f4 Qf6 19. Bb2 Bf5 20. Bd3 (20. Bxf6 {
1/2 (20) Hillarp Persson,T (2547)-Grandelius,N (2542) Vasteras 2011}) 20...
Bxd3 21. Rxd3 Qg6 22. Qc3 $14) 13. exd4 Ne7 (13... b5 $5 14. Ba2 (14. Bd3 Bb7)
14... Ne7 15. Ne5 Bf5) 14. Ne5 $14 {[%csl Ge5]} Be6 {[%mdl 32] This move
creates a long-term weakness in Black's position.} (14... b5 15. Bd3 Bb7 16.
Bf4 $14) (14... c6 $5 {[%cal Ye7d5]}) 15. Bxe6 fxe6 {[%csl Re6]} 16. Bf4 Qe8
17. Re1 Nfd5 18. Bh2 Bxe5 19. Bxe5 Qf7 20. Ne4 (20. Nxd5 $142 Nxd5 (20... exd5
21. Qxc7 Qxf2+ $2 22. Kh2 $18) 21. Re4 $14) 20... Nc6 21. Nc5 b6 $6 (21... Nf4
$5 22. Nxb7 (22. Bxf4 Nxd4 23. Qe4 Qxf4 24. Qxf4 Rxf4 25. Rad1 b6 26. Nxe6 Nxe6
27. Rxe6 Raf8 28. f3 R4f6 $11) 22... Nxe5 23. Rxe5 Nxg2 24. Kxg2 Qf3+ 25. Kg1
Qxb7 $11) 22. Nd3 Nxe5 23. Nxe5 Qf5 24. Rac1 Rad8 25. h4 Nf4 {Black
desperately tries to create counterplay but White keeps an advantage in the
endgame.} 26. Qxf5 exf5 27. Rxc7 Rfe8 (27... Rxd4 28. Rb7 $1 b5 29. g3 Nd5 30.
Ng6 $16) 28. Rc6 Rxd4 29. Rxb6 Rd5 30. g3 Rdxe5 (30... Nh5 31. Nf3) 31. Rxe5
Rxe5 32. gxf4 {[%mdl 4096]} Ra5 {Of course, Black's rook will be passive here
but he had little choice:} (32... Re4 33. Rxa6 Rxf4 34. b4 {, and White's
pawns quickly run forward.}) (32... Re1+ 33. Kg2 a5 34. Rb5 $18) 33. h5 Ra4 34.
Kg2 Kf7 35. Kf3 Ke7 36. Rb7+ Kf6 37. Rb6+ Ke7 38. Kg3 Kf7 39. f3 Ke7 40. Rg6
Kf7 41. Kf2 Ra5 (41... Rxf4 42. Rxa6 Rh4 43. b4 Rxh5 44. b5 Rh2+ 45. Kg3 Rb2
46. a4 $18) ({After} 41... Rc4 $5 42. Ke3 a5 43. Rb6 {[%cal Rb6b5]} a4 44. Rb4
{White should win, too.}) 42. Rb6 Ra4 43. Ke3 Ke7 44. Rb7+ Kf6 45. Rc7 $22 Ra5
(45... g5 46. Rc6+ $18) (45... a5 46. Ra7 g5 47. Ra6+) 46. Rc4 Ke6 47. a4 Ke7
48. b3 Kd6 49. Rc8 Rd5 {The pawn endgame is completely lost for Black} ({
as well as} 49... Ke6 50. Rc6+ Kd7 (50... Kf7 51. Kd4) 51. Rg6) 50. Rd8+ Kc6
51. Rxd5 Kxd5 52. Kd3 a5 53. Kc3 g6 (53... Kc5 54. b4+ axb4+ 55. Kb3 $18) 54.
hxg6 Ke6 55. b4 axb4+ 56. Kxb4 h5 57. g7 Kf7 58. a5 1-0

[Event "WchT 11th"]
[Site "Khanty-Mansiysk"]
[Date "2017.06.23"]
[Round "6.4"]
[White "Fedoseev, Vladimir1"]
[Black "Gajewski, Grzegorz"]
[Result "1-0"]
[ECO "E51"]
[WhiteElo "2703"]
[BlackElo "2628"]
[Annotator "Lenderman,A"]
[PlyCount "63"]
[EventDate "2017.06.17"]
[EventType "team-tourn"]
[EventRounds "9"]
[EventCountry "RUS"]
[SourceTitle "CBM 179"]
[Source "ChessBase"]
[SourceDate "2017.07.12"]
[SourceVersion "1"]
[SourceVersionDate "2017.07.12"]
[SourceQuality "1"]
[WhiteTeam "Russia"]
[BlackTeam "Poland"]
[WhiteTeamCountry "RUS"]
[BlackTeamCountry "POL"]

{Despite a few very sharp battles that were played today, I decided to pick
Vladimir Fedoseev's win over Gajevski as game of the day since it involved a
new, interesting idea in the opening (at least for me), and seemed like a very
good positional game with a nice finish.} 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3
Bb4 {The currently very popular Ragozin Defence, which is one of the main
weapons for Vishy Anand, of whom Gajevski is a main second.} 5. e3 $5 {
According to my database this is the first time Vladimir Fedoseev has played
with this move order. In the past he has tried a few other moves also with
good success. In general I noticed Fedoseev is a very versatile player in the
opening - he can play almost any opening with either colour.} (5. Qa4+) (5. a3)
(5. Qb3 {are the other moves he's tried here. Fedoseev won a particularly
important game against his teammate in the World Team Championship, Maxim
Matlakov at the Aeroflot Open.} c5 6. dxc5 Na6 (6... Nc6 $5 {is another main
move.}) 7. a3 Bxc3+ 8. Qxc3 Nxc5 9. cxd5 Qxd5 10. Be3 Nce4 11. Qe5 Qxe5 (11...
O-O $5 {might also be possible.}) 12. Nxe5 Nd5 13. Bc1 Nc5 14. Rb1 f6 15. Nc4
e5 16. f3 Ke7 17. e4 Nf4 18. Be3 Ncd3+ 19. Bxd3 Nxd3+ 20. Ke2 Nf4+ 21. Bxf4
exf4 22. Na5 b6 $6 (22... Rd8) 23. Nc6+ Kd6 $6 (23... Kf7) 24. Rbc1 $1 Ba6+ 25.
Kf2 {Fedoseev,V (2658)-Matlakov,M (2701) Moscow RUS 2017, and White soon won.})
5... O-O 6. Bd2 b6 7. cxd5 exd5 8. Rc1 $5 {An attempted improvement over his
own blitz game, also against Maxim Matlakov, where White could only be worse.}
(8. Be2 Bb7 9. O-O Nbd7 10. Rc1 a6 11. a3 Bd6 12. b4 Qe7 13. Qb3 Qd8 {1/2 (13)
Fedoseev,V (2661)-Matlakov,M (2695) St Petersburg RUS 2014} (13... c6 $5)) 8...
Be7 (8... Bb7 9. Nb5 $5 {might've been Fedoseev's idea, but I can only guess.
This forces a trade of bishops. White was probably happy to get this structure.
} (9. Bd3 {It's also possible to put the bishop simply on d3 instead of e2.})
9... Bxd2+ 10. Nxd2 (10. Qxd2 $5 c5 $5) 10... c6 (10... c5 11. dxc5 bxc5 12.
Rxc5 Nc6 $44 {is very sharp and probably works well for Black but still
perhaps risky to play for without concrete analysis.}) 11. Nc3 Nbd7 12. Be2 {
The position is equal but maybe slightly easier to play for White. It's not so
easy for Black to find a clear plan here.}) 9. Bd3 Bb7 (9... c5 $5 {is also
interesting and has been played a few times, including by fellow top Polish
player, Wojtaszek, who is also a second for Anand.} 10. O-O Bg4 11. h3 Bh5 12.
g4 Bg6 13. Bxg6 hxg6 14. Ne5 Bd6 15. Qf3 (15. f4 $5) 15... Nbd7 16. Nc6 Qc7 17.
Nxd5 Nxd5 18. Qxd5 Rac8 {1-0 (65) Vidit,S (2651)-Wojtaszek,R (2734) Berlin GER
2015, and after a tough, back and forth struggle White ended up winning though
Black did stand well at some point here.}) 10. O-O Nbd7 11. Be1 $5 {A very
interesting idea, preparing to transfer the bishop to g3 or h4, after playing
Ne5 and f3 or f4. Interestingly enough, this idea has already been tried by
the current Russian Champion and a coach of the Russian Team, Alexander
Riazantsev against none other than Radoslaw Wojtaszek. So this is actually a
very intriguing battle, not only at the chessboard, but also in preparation,
because it's very likely both players got help in preparation for this game
and are very well aware of the game Riazantsev-Wojtaszek.} (11. Ne5 {Is
probably too early.} Nxe5 12. dxe5 Nd7 13. f4 Nc5 14. Bb1 d4 15. Nb5 d3 $132 {
And Black gets good counterplay.}) 11... c5 12. Ne5 cxd4 13. Nxd7 $5 {And here
is the first major deviation and also a novelty according to my database.
Riazantsev played 13.exd4 and that didn't work so well for him in his game
since Black quickly got the advantage in that game.} (13. exd4 Nxe5 14. dxe5
Nd7 15. f4 Nc5 16. Ne2 d4 17. Ng3 Nxd3 18. Qxd3 Qd5 $15 {1/2 (52) Riazantsev,A
(2671)-Wojtaszek,R (2749) Doha QAT 2016, and after many more moves, the game
was drawn.}) 13... Nxd7 {Understandable choice.} (13... Qxd7 {This might be
stronger, but Gajewski might've rejected this due to Nb5!? which will leave
Black with an isolated pawn.} 14. Nb5 {was likely White's idea here.} (14. exd4
Ne4 $11 {seems harmless for Black.}) 14... Rfc8 15. Nxd4 Rxc1 16. Qxc1 Rc8 17.
Qd1 g6 18. Ne2 {Again, the engine says it is equal, but I think White is
better off here, since he has a simple plan with Bc3, Nf4, etc.. putting
pressure on the isolated pawn and Black has to find creative ways to get
counterplay.}) 14. exd4 Nf6 15. f3 $5 {Now Black is not going to be able to
play ...Ne4, a freeing move and still has some problems to solve.} (15. Nb5 {
The engine suggests this move, but I think it's rather harmless.} Ne8 (15...
Ne4 $5 {is even more forcing, trying to go ...Nd6 and discouraging Bd2.}) 16.
Bd2 a6 17. Nc3 Bf6 {with a roughly equal game.}) 15... g6 $6 {In my opinion
this is a small strategic mistake. White's intention with the move f3 is not
only to stop ...Ne4, but also to prepare Bh4 and to try to basically force the
trade of the dark-squared bishops. What that does is, in the long run it
leaves Black with a "bad bishop" on b7 against the good one on d3 because of
the fixed pawn structure in the centre. On the other hand if Black can keep
the dark-squared bishops, he can also potentially apply pressure on White's
"weakness on d4, not only with the knight but also with the bishop. Then the
game would be roughly equal.} (15... Nh5 $1 {In my opinion this was a strong
move, after which it seems to me that Black has a decent game without many
problems. But it's probably not such an easy move to find during the game.} 16.
Bd2 g6 17. Nb5 Bf6 18. Be3 Re8 $1 (18... Ng7 $6 19. Qd2 Ne6 20. f4 a6 21. f5
axb5 22. fxe6 fxe6 23. Bxb5 Rxa2 24. Bh6 Rf7 25. Rf3 Ra5 26. Rcf1 Rxb5 27. Qf2
Ra5 28. Rxf6 Rxf6 29. Qxf6 Qxf6 30. Rxf6 Ra8 31. Rxe6 Kf7 32. Rxb6 $14 {
Here White is still pressing.}) 19. Qd2 a6 $1 20. Nc7 Rxe3 21. Qxe3 Rc8 22.
Nxa6 Rc4 $1 23. Bxc4 dxc4 24. Rfd1 (24. Rcd1 Bxa6 $17 {This is not a forced
line by any means but it shows how quickly Black can also get counterplay.})
24... Bg5) 16. Bh4 Nh5 17. Bxe7 Qxe7 18. Qd2 Qf6 19. Bb1 {Probably not the
only move.} (19. Bc2 $5 {might be an improvement since in one critical line,
White has a key move.} Nf4 20. g3 Ne6 21. Rcd1 Ba6 22. Rf2 Rad8 23. f4 Rfe8 24.
Ba4 $1 Re7 25. Re1 $1 {and here Black is tied down. Obviously with the bishop
on b1, Ba4 wasn't possible.}) (19. Bb5 $5 {was also possible, trying to induce
a6 in some cases and controlling the e8-square in the meanwhile.}) 19... Rfe8
$6 {In my opinion another inaccuracy, which allows White to execute his
dangerous plan and now Black's position starts to become critical.} (19... Nf4
{If I were Black I would prefer to activate the knight and to try to create
counterplay right away against the weak d4-pawn. The position is still ok for
Black but it's already becoming more difficult to play than if he had played ..
.Nh5 earlier.} 20. g3 Ne6 21. Rcd1 Ba6 22. Rf2 (22. Nxd5 $2 Qd8) 22... Rad8 23.
f4 Rfe8 $1 24. f5 Ng5 25. fxg6 (25. Kg2 Ne4 $132) 25... Nh3+ 26. Kg2 Nxf2 27.
gxh7+ Kh8 28. Qxf2 Rd6 $11) 20. f4 Re7 {A logical move, but the drawback of
this move is that it misplaces the black rook in some cases.} (20... Rac8 21.
g4 (21. Rcd1 $5 {would keep the pressure though, preparing to meet ...Rc4. And
still it's not easy for Black to play it. White has a lot of ideas and Black
sort of has to wait.}) 21... Ng7 22. f5 Qh4 $1 $132 {would still be ok for
Black concretely.}) 21. g4 Ng7 22. f5 g5 $2 {The decisive mistake, after which
his position becomes indefensible.} (22... gxf5 {Good or bad, this had to be
tried, to at least keep some counterplay chances alive.} 23. Bxf5 Qh4 $1 24.
Qf2 Qh3 (24... Qxf2+ 25. Rxf2 Rae8 26. Kg2 $14 {is also only slightly worse
for Black.}) 25. Qf3 Qh6 $14 {and White is only slightly better. Black still
has counterplay.}) (22... Qh4 $2 {Now this doesn't work thanks to the rook
being on e7.} 23. f6 Qxg4+ 24. Kh1 $16 {is also winning for White.}) 23. h4 h6
24. hxg5 hxg5 25. Rf3 Kf8 26. Rh3 Ke8 27. Nb5 Kd8 28. Qh2 $1 {The most
effective move. The game is completely lost for Black.} Rc8 29. Rxc8+ Bxc8 30.
Rh6 Re1+ 31. Kf2 Qe7 32. Qd6+ {Black will either be mated or down a rook. A
very nice quick win by Vladimir Fedoseev, using a nice opening idea, and
outplaying Black in an equal position where just a couple of inaccuracies and
a big mistake is all it took for Black to lose quickly. This game was a
crucial game for Russia to win their very important match against Poland, who
had been doing very well up to this point.} 1-0

[Event "Dortmund 45th"]
[Site "Dortmund"]
[Date "2017.07.21"]
[Round "5"]
[White "Wang, Yue"]
[Black "Bluebaum, Matthias"]
[Result "1-0"]
[ECO "E51"]
[WhiteElo "2699"]
[BlackElo "2642"]
[Annotator "Mokal,P"]
[PlyCount "117"]
[EventDate "2017.07.15"]
[EventType "tourn"]
[EventRounds "7"]
[EventCountry "GER"]
[EventCategory "19"]
[SourceTitle "CBM 180"]
[Source "ChessBase"]
[SourceDate "2017.09.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.09.13"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Bb4 5. Bd2 {A rare line that has been used
for its surprise value by Nakamura and Aronian in the past.} O-O ({
Interestingly the first game with this move was played way back in 1923 by
Alekhine in a simultaneous display...} 5... Nc6 6. e3 Bd7 7. Bd3 O-O 8. O-O
Bxc3 9. bxc3 Ne4 10. Rb1 b6 11. Qc2 f5 12. cxd5 exd5 13. c4 $16 {0-1 Alekhine,
A-Love,A/Greenock 1923/EXT 2001 (37)}) 6. e3 b6 ({Aronian's approach versus
Nakamura was} 6... Re8 7. a3 Bf8 8. Rc1 $5 Nbd7 9. Be2 a6 10. c5 c6 11. Na4 Ne4
12. O-O Nxd2 13. Nxd2 e5 $1 $132 {1-0 Nakamura,H (2767)-Aronian,L (2797)/Saint
Louis 2014 (48)}) ({While Anand chose the straightforward} 6... c5 7. a3 Bxc3
8. Bxc3 Ne4 9. Qc2 Nxc3 10. bxc3 Nd7 11. Bd3 h6 $5 (11... g6) 12. cxd5 exd5 13.
Qb2 Qe7 14. O-O Nf6 15. Rfb1 c4 16. Bc2 Ne4 17. a4 $14 {1/2-1/2 Aronian,L 
(2781)-Anand,V (2803)/London ENG 2015 (34)}) 7. Rc1 ({Fedoseev displayed a
nice idea at the World Team Championship played a month before} 7. cxd5 exd5 8.
Rc1 Be7 9. Bd3 Bb7 10. O-O Nbd7 11. Be1 $1 {[%cal Gf3e5,Gf2f4,Ge1g3]} c5 12.
Ne5 cxd4 $5 13. Nxd7 Nxd7 14. exd4 Nf6 15. f3 $14 {1-0 Fedoseev,V (2703)
-Gajewski,G (2628)/Khanty-Mansiysk 2017/CBM 179/[Lenderman,A] (32)}) 7... Ba6
8. Qa4 c5 ({It was also possible to try to retain the bishop with} 8... Be7 9.
cxd5 Bxf1 10. Kxf1 ({or} 10. Rxf1 exd5) 10... exd5) 9. cxd5 $146 (9. a3 cxd4 (
9... Bxc3 10. Bxc3 Ne4 $11) 10. exd4 (10. axb4 dxc3 11. Bxc3 Ne4 $11) 10...
Bxc3 11. bxc3 $6 Qc8 12. cxd5 Bxf1 13. Kxf1 exd5 $15 {0-1 Pfeiffer,G-Kluger,G/
Leipzig 1960 (55)}) (9. dxc5 bxc5 (9... Bxc5 10. cxd5 Bxf1 11. Kxf1 exd5 12. g3
$5) 10. a3 Bxc3 (10... Ba5) 11. Bxc3 Ne4 12. cxd5 Nxc3 13. Rxc3 Bxf1 14. Rxf1
Qxd5 {1-0 Dejkalo,S (2435)-Djuric,S (2435)/Tallinn 1986 (50)} 15. Ke2 $36) 9...
Bxf1 10. Rxf1 ({The other way to continue would be} 10. Kxf1 {in the style of
the Nimzo Rubinstein variation} exd5 (10... Nxd5 11. g3) 11. g3 ({White cannot
get in a Botvinnik style g4 follow-up as Black is better developed here than
in the Nimzo Rubinstein. For example} 11. Ne5 a5 (11... Nbd7 12. Nc6) 12. g4 (
12. a3 Bxc3 13. Bxc3 Ne4 14. g3) 12... Bxc3 13. Bxc3 Ne4 $15)) 10... exd5 (
10... Nxd5 11. Nxd5 Bxd2+ 12. Kxd2 (12. Nxd2 Qxd5 13. dxc5 Nd7 {can be
dangerous}) 12... Qxd5 13. Ke2 Nd7 $11) 11. Ke2 a6 {Giving White an easy way
to sort out the position of his weak king.} ({A more dynamic option was} 11...
Qe7 12. dxc5 (12. Rfd1 c4) 12... bxc5 13. Rfd1 Nbd7 (13... d4 14. Kf1 $1 dxc3
15. bxc3 $14 {[%csl Rb4]}) 14. Kf1 Rab8 $13) (11... Re8 12. Rfd1 (12. dxc5 bxc5
13. Rfd1 d4) 12... Nbd7 13. Kf1 Qe7 $13) 12. dxc5 (12. a3 $6 Bxc3 13. Bxc3 c4
14. Rfe1 b5 15. Qc2 a5 $36) 12... bxc5 13. Rfd1 $14 {With his king sorted out,
Wang Yue now has a clear plan in his mind. The side playing against isolated
or hanging pawns should generally try to exchange pieces. The smaller the
number of pieces on the board the more prominent will be the weakness of the
pawns and the importance of their central control will be lessened. White uses
this fundamental skillfully in the next few moves.} Nbd7 (13... Re8 $2 {
walks into} 14. Nxd5 $1 Nxd5 (14... Qxd5 15. Bxb4 $18) 15. Bxb4 cxb4 16. Rxd5
$18 {[%csl Re8]}) (13... Qe7 14. Kf1 $14) 14. a3 Bxc3 (14... Ba5 $2 15. Nxd5
Bxd2 16. Nxf6+ $18) ({Black could have retained the B with} 14... Nb6 15. Qc2
Ba5 16. Kf1 $14) 15. Bxc3 Qb6 16. Ne5 ({It would make sense to offer Q
exchange right now with} 16. Qa5 {but Black can afford to ignore it with the
help of tactical threats, for example} Qb3 17. Bxf6 Nxf6 18. Qxc5 Qxb2+ (18...
Rab8) 19. Rc2 Qb8 (19... Qb5+ 20. Qxb5 axb5 21. Rd3) 20. Qb4 $14) 16... Qe6 ({
Worth considering was} 16... Nxe5 $5 17. Bxe5 c4 {[%csl Rb2,Rd5] White would
like to take on f6 sooner or later but the weakness of the b2-P will make it
tough to get too much out of it, for example} 18. Qb4 (18. Bxf6 Qxf6 19. Rxd5
Qxb2+ 20. Rc2 Qb7 $132 {[%csl Rg2]}) 18... Qe6 19. Bxf6 Qxf6 20. Rxd5 Rab8 21.
Qxc4 Qxb2+ 22. Kf1 Qxa3 $11) 17. Nxd7 Nxd7 18. Kf1 f6 (18... Rab8 19. b4 c4 20.
e4 $5 {[%csl Rd7]}) 19. h3 {[%cal Ga4g4] Preparing to carry out the above
mentioned fundamental plan of exchanges.} Rfc8 20. Qg4 Qxg4 (20... Qf7 $2 21.
Qf3 Nb6 22. Ba5 $16) 21. hxg4 Nb6 22. Ba5 Nc4 23. Be1 Nb6 (23... Nxb2 $6 24.
Rxd5 c4 25. Rd4 {[%cal Gc1c2]} Rab8 26. Bb4 Nd3 27. Rcxc4 $16) 24. Ba5 Nc4 25.
Be1 Nb6 26. b4 cxb4 (26... c4 27. a4 Nxa4 28. Rxd5 Rab8 29. Ra1 Nb2 30. Bc3 Nd3
31. Ra4 Rb6 $14) 27. axb4 Kf7 (27... Rxc1 28. Rxc1 Nc4 (28... Rc8 29. Ra1 $16)
29. Ra1 Kf7 30. Ke2 Ke6 31. Bc3 $14 Ne5 $2 32. b5) (27... Nc4 28. Ke2 (28. Rxd5
Nxe3+) 28... Rd8 (28... Ra7 29. Rxd5 $16) 29. e4 $14) 28. Ra1 $1 Rc4 29. Ra5 $1
{White gives up the g4-pawn but takes the more important a6-pawn.} Rxg4 30.
Rda1 Rb8 31. Rxa6 {The B is much stronger than the N, especially since Black
has to manage both sides of the board due to White's strong passed pawn.} Re4
32. Ra7+ Re7 (32... Kg6 33. Rc7 Na8 (33... Rc4 34. Raa7 Rxc7 35. Rxc7 $14) 34.
Rc5 d4 35. Rc4 $36) 33. Ke2 Rbb7 34. Rxb7 Rxb7 35. Kd3 (35. Ra5 $5 Ke6 36. Rb5
Kd6 37. Kd3 Kc6 38. Rc5+ Kd6 39. Kd4 $14) 35... Ke7 36. Bc3 Nd7 37. f4 {
Dominating the knight.} Nb8 38. Bd4 Nc6 39. Bc5+ Kd7 40. Kc3 f5 41. Ra6 Kc7 42.
Kb3 Rb8 43. Ka4 Re8 44. g3 (44. b5 $5 {would be strong here as well} Re4+ 45.
Kb3 Nd8 46. Ra7+ Nb7 47. Bd4 g6 48. Kb4 h5 (48... Kb8 49. b6 h6 50. Kb5) 49. g3
$18) 44... h5 45. b5 Re4+ 46. Kb3 Nd8 47. Bd4 g5 48. Ra7+ (48. fxg5 Ne6 (48...
Rg4 49. Be5+ Kd7 (49... Kb7 50. g6) 50. Ra7+ Ke8 51. Bf6 $18) 49. g6 Nxd4+ 50.
exd4 Rg4 51. Kb4 Rxg3 {would be unnecessary complications}) 48... Kb8 49. Rh7
gxf4 (49... h4 50. gxh4 gxf4 51. Ba7+ Ka8 52. exf4 Rxf4 53. Bb6 $18) 50. gxf4
Ne6 51. Be5+ Kc8 52. b6 Nc5+ (52... Rxe3+ 53. Kb4 Re4+ 54. Kb5 $18 {[%cal
Gb6b7,Gb7b8]}) 53. Kc2 Rc4+ (53... Rxe3 54. Rc7+ $18 {[%csl Rc5]}) 54. Kd1 Nb7
(54... Rb4 55. Rc7+ $18) 55. Rxh5 Rb4 56. Bd4 Na5 57. Rxf5 Rb5 58. Kc2 Nc6 59.
Kc3 1-0

[Event "Saint Louis m"]
[Site "Saint Louis"]
[Date "2014.11.21"]
[Round "1"]
[White "Nakamura, Hikaru"]
[Black "Aronian, Levon"]
[Result "1-0"]
[ECO "E51"]
[WhiteElo "2767"]
[BlackElo "2797"]
[Annotator "Pavlovic,M"]
[PlyCount "95"]
[EventDate "2014.11.21"]
[EventType "match"]
[EventRounds "4"]
[EventCountry "USA"]
[SourceTitle "CBM 164"]
[Source "ChessBase"]
[SourceDate "2015.01.15"]
[SourceVersion "1"]
[SourceVersionDate "2015.01.15"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Bb4 5. Bd2 $5 {A rare idea. White wants to
transpose to the Nimzo-Indian which he does, but the Bd2 line itself is not
considered dangerous for Black. But we have a game, which sometimes is for
some players more important.} O-O {An attempt to get a pawn which seems to be
highly risky for Black:} (5... dxc4 6. e3 Bxc3 7. Bxc3 b5 (7... Qd5 8. Be2 Nc6
9. O-O b5 10. b3 cxb3 11. Qxb3 $5 a6 12. Qb2 O-O 13. Ne5 Bb7 14. Bf3 Ne4 15.
Nd3 f5 16. Rfd1 Rab8 17. Nf4 Qd7 18. d5 exd5 19. Rxd5 Nd6 20. Rc5 Nd8 21. Bd1
$36) 8. a4 c6 9. axb5 cxb5 10. b3 O-O 11. bxc4 bxc4 12. Bxc4 Qc7 13. Qb3 Bb7
14. Ba5 Qc8 15. O-O Bxf3 16. gxf3 Nc6 17. Bd2 Rb8 18. Qa4 Rb2 19. Rfd1 Nd5 20.
Bf1 Qb7 21. e4 Nb6 22. Qa3 Nd7 23. Be3 $14 {1-0 (46) Reis,C (2366)-Pizzo,R
corr. 2006}) 6. e3 {I have extracted some new games played in this line;
obviously clear pathways have not yet been established.} Re8 (6... c5 7. a3 (7.
dxc5 Bxc5 8. cxd5 (8. Rc1 Nc6 9. cxd5 exd5 10. Be2 d4 11. exd4 Nxd4 12. O-O
Nxe2+ 13. Qxe2 Re8 14. Qc4 b6 15. Bg5 Bb7 16. Rfd1 Qc8 $1 $132) 8... exd5 9.
Be2 Nc6 10. O-O d4 11. exd4 Nxd4 12. Nxd4 Bxd4 13. Bf3 Be6 14. Qc2 Nd5 15. Nxd5
Bxd5 16. Bxd5 Qxd5 {1/2-1/2 (16) Ophoff,R (2062)-Abolina,A (1870) Hockenheim
2007}) 7... Bxc3 8. Bxc3 cxd4 9. Bxd4 Nc6 10. cxd5 Nxd4 11. Qxd4 Qxd5 12. Qxd5
Nxd5 13. Bd3 b6 14. Ke2 Bb7 15. Rac1 Rac8 16. Nd4 a6 17. f3 Rfd8 18. g3 h6 19.
Rhd1 Kf8 $11 {1/2-1/2 (58) Zvjaginsev,V (2642)-Lysyj,I (2670) Vladivostok 2014}
) (6... b6 7. Rc1 dxc4 (7... Bb7 8. cxd5 exd5 9. Bd3 a6 10. O-O Bd6 11. Ne5 c5
12. f4 Nc6 13. Na4 c4 14. Bb1 b5 15. Nc3 b4 16. Na4 a5 17. Be1 Ne8 18. Qh5 g6
19. Qh6 f5 20. g4 Ng7 21. Nf3 Be7 22. h4 fxg4 23. h5 Nxh5 24. f5 Rxf5 25. Bxf5
gxf3 26. Bxg6 hxg6 27. Qxg6+ Ng7 28. Rxf3 Qe8 29. Qg2 Nd8 $1 $17 (29... Nxd4
30. exd4 Qxa4 31. Bg3 $16 {1-0 (44) Sandipan,C (2597)-Agdestein,S (2637)
Warsaw 2014}) 30. Bg3 (30. Rg3 $6 Nde6 $19) 30... Nf7 31. Rcf1 Ng5 32. Be5 Ra6
33. Rg3 Rg6 $17) 8. Bxc4 Bb7 9. O-O Nbd7 10. Qe2 c5 11. a3 Bxc3 12. Bxc3 Ne4
13. Rfd1 Nxc3 14. Rxc3 Qe7 15. Ba6 Bxa6 16. Qxa6 cxd4 17. Nxd4 Nc5 18. Qc4 Rad8
19. Rcc1 Qh4 20. Qc2 Qe4 21. Qxe4 Nxe4 22. Nc6 $14 {1-0 (54) Sandipan,C (2603)
-Efimenko,Z (2649) Muelheim 2014}) 7. a3 (7. Be2 c6 8. O-O Nbd7 $13) (7. Bd3
Nbd7 8. O-O c5 9. a3 Bxc3 10. Bxc3 cxd4 11. exd4 b6 {with obvious similarities
to regular 4.e3 lines in the Nimzo, or even some Bogo-Indian types of position.
}) 7... Bf8 8. Rc1 Nbd7 9. Be2 a6 (9... dxc4 10. Bxc4 a6 11. e4 $5 (11. a4 b6
12. O-O Bb7 13. Qe2 c5 14. Rfd1 Qc7 15. dxc5 Bxc5 $13) 11... b5 12. Be2 Bb7 13.
e5 Ne4 14. Nxe4 Bxe4 15. Ng5 Bd5 16. Bd3 g6 17. h4 $40) 10. c5 c6 11. Na4 Ne4 (
11... e5 12. O-O e4 13. Ne1 $13) 12. O-O Nxd2 13. Nxd2 (13. Qxd2 e5 14. b4 e4
15. Ne1 Rb8 16. Nc2 Qh4 17. Nc3 Nf6 18. a4 Ng4 19. h3 Nh6 $13) 13... e5 14. e4
$5 dxe4 {Another possibility for Black gives easier play somehow:} (14... exd4
$5 15. exd5 cxd5 16. Nf3 b5 17. cxb6 Nxb6 18. Nxd4 (18. Nxb6 Qxb6 19. Qxd4 Rb8
$132) 18... Nxa4 19. Qxa4 Bd7 20. Qb3 Qf6 21. Rfd1 Rab8 $132) 15. Nxe4 Qh4 16.
f3 exd4 17. Bc4 (17. Qxd4 {This was perhaps a more precise move order:} {
Black can't solve his problems in the event of:} Nf6 (17... f5 18. g3 Qh6 19.
Bc4+ Kh8 20. Nd2 Bxc5 21. Nxc5 Nxc5 22. Qxc5 Qxd2 23. Rfd1 Qg5 24. Bf7 $16) 18.
Nb6 Rb8 19. Nxc8 Rbxc8 20. Bc4 {can transpose to the game.}) 17... Nf6 {
It seems that Black has missed a better move...} (17... Ne5 $1 18. Nb6 Rb8 19.
Nxc8 (19. Qxd4 Bf5 20. b4 Bxe4 21. Rcd1 $5 Rbd8 22. Qxe4 Qxe4 23. fxe4 Rxd1 24.
Rxd1 Be7 $11) 19... Rbxc8 20. Qxd4 Rcd8 21. Qc3 Kh8 $13) 18. Nb6 Rb8 19. Nxc8
Rbxc8 20. Qxd4 Nxe4 (20... Rcd8 21. Bxf7+ $1 Kh8 22. Qe3 $16) 21. fxe4 {
We have entered an opposite-coloured bishop type of position, and it is easy
to go astray when evaluating such positions. Pressure on f7 is simply stronger
then Black's ability to block the e4-pawn from advancing further.} Rc7 {
The alternative was interesting:} (21... Kh8 $5 22. Bxf7 Rxe4 23. Qd7 Rb8 24.
b4 $13 {[%cal Gf7a2,Gd7f7]}) 22. Rce1 Rd8 {I am not sure about this move. The
alternative looks safer:} (22... g6 23. g3 Qd8 (23... Qg5 24. e5 Bg7 25. Qf4 $1
Qxf4 26. gxf4 Bf8 27. b4 Rd8 28. Re4 $14) 24. Qf2 Ree7 25. e5 Bg7 26. Rd1 Qe8
27. e6 fxe6 28. Rd6 Kh8 29. Qe2 e5 30. Rfd1 Rc8 31. Qe4 $44 {Despite beeing a
pawn down White has control of the position but it's not sure if he has more
than that.}) 23. Qe3 Qh6 24. b4 $1 Qxe3+ 25. Rxe3 Rd4 26. Bb3 g6 27. Ref3 Rdd7
28. e5 $1 {That's it! The e4-pawn is alive and Black is now in a very
difficult position, where good advice is not easy to give.} Re7 29. e6 $16 h5
30. Rf6 Kg7 31. h4 a5 32. R1f3 axb4 33. axb4 Kh7 34. Bc2 Kg7 35. exf7 $18 Rxf7
36. Rxg6+ Kh8 37. Rfg3 Bg7 38. R3g5 Rf4 39. Rxh5+ Kg8 {Black has lost all his
pawns on the kingside.} 40. Bf5 Kf8 41. Be6 Ke8 42. g3 Rxb4 43. Kg2 Rb2+ 44.
Kh3 Kd8 45. Rhg5 Bc3 46. Rg8+ Ke7 47. Bc4 Rf2 48. Rh5 1-0

[Event "VISA GP"]
[Site "Reykjavik"]
[Date "1998.03.14"]
[Round "5"]
[White "Agdestein, Simen"]
[Black "Richardson, John R"]
[Result "1-0"]
[ECO "E51"]
[WhiteElo "2570"]
[BlackElo "2315"]
[Annotator "Psakhis,L"]
[PlyCount "79"]
[EventDate "1998.03.10"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ISL"]
[SourceTitle "CBM 064"]
[Source "ChessBase"]
[SourceDate "1998.06.02"]
[SourceVersion "1"]
[SourceVersionDate "1998.06.02"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 d5 5. Nf3 c5 6. a3 Bxc3+ 7. bxc3 O-O 8. Bb2
{Rare move was played played by great Kortchnoi few times unfortunately doesn,
t promised any advantage to White.} (8. cxd5 exd5 9. Bd3 $5) 8... Qa5 (8... Nc6
9. Qc2 cxd4 (9... b6 10. Rd1 Qe7 11. Ne5 Bb7 12. cxd5 exd5 13. c4 cxd4 14. Nxc6
Bxc6 15. Rxd4 Rac8 16. Qf5 $1 $36 {1-0 Kortchnoi,V-Fuchs/Leningrad i 1967 (34)}
) 10. cxd4 Bd7 11. Bd3 dxc4 12. Qxc4 Rc8 13. Qc2 Qa5+ 14. Ke2 Ne7 15. Rac1 Ned5
16. Qb1 Bb5 $11 {1-0 Kortchnoi,V-Palac,M/Val Maubuee 1990 (53)}) 9. Nd2 (9. Bd3
cxd4 10. exd4 dxc4 11. Bxc4 Nc6 12. O-O e5 13. Re1 Bg4 14. h3 Bh5 $11 {1/2-1/2
Siwiec,B-Zemerov,V/Katowice op 1993 (60)}) 9... Nbd7 (9... Qc7 10. cxd5 cxd4
11. d6 $5 (11. cxd4 exd5 12. Bd3 Re8 13. O-O Nc6 14. Qc2 Bg4 15. Rfe1 Bh5 16.
e4 $1 dxe4 17. Nxe4 Nd5 18. Qc5 $36 {1-0 Olafsson,F-Sosonko,G/Wijk aan Zee
1976 (24)}) 11... Qxd6 12. cxd4 Nc6 13. Be2 Rd8 14. Nc4 Qe7 15. Qb3 b6 16. O-O
Ba6 17. Rfc1 $14 {1-0 Wirthensohn,H-Sharif,M/Arandjelovac 1985 (31)}) 10. cxd5
exd5 11. Bd3 {White got nice pair of bishops, but good development promised
equal chances to Black} cxd4 12. Nb3 (12. cxd4 Nb6 13. O-O Na4 14. Qc2 Bd7 15.
Nb3 Qd8 16. Nc5 Rc8 17. Qb3 Nxc5 18. dxc5 $14 {1-0 Olafsson,F-Medina Garcia,A/
Wijk 1969 (36)}) 12... Qc7 13. cxd4 Nb6 {[%cal Gb6c4]} 14. a4 Re8 15. O-O Ng4
16. g3 {[%csl Rf3,Rh3]} Qd6 {[%cal Gd6h6,Rh6h2]} 17. Bc1 Qh6 18. h4 Qh5 19. Qf3
Nc4 {[%cal Gc4d6,Gd6e4]} 20. Re1 Nd6 21. Qg2 Nf6 {[%cal Gc8g4]} 22. f3 (22. Ba3
Nf5 (22... Nde4 $6 {[%cal Gc8g4]} 23. f3 $1 Bh3 (23... Nc3 24. Bb2 $18 {
[%csl Rc3]}) 24. Qxh3 (24. Qh1 Nxg3 25. Qxh3 Qxf3 26. Qg2 Rxe3 27. Qxf3 Rxf3
28. Nc5 $14) 24... Ng5 25. Qf5 Nxf3+ 26. Kg2 Nxe1+ 27. Rxe1 $16)) 22... Bf5 23.
Bf1 $1 {[%cal Rc1a3,Rg3g4]} (23. g4 $2 Qxh4 {[%cal Rh4e1]}) 23... Rac8 {
[%csl Yc2]} 24. Nc5 Qg6 (24... b6 $6 25. Nd3 $14 (25. g4 $2 Qxh4) 25... Nc4 (
25... Bxd3 26. Bxd3 Nf5 27. Bd2 {[%csl Rh5]}) 26. Nf4 Qh6 27. Qf2 {[%cal Rg4g5,
Rg3g5]}) 25. g4 b6 (25... Bd7 26. g5 {[%csl Rd7]} b6 27. h5 $1 Nxh5 28. Nxd7
Nf4 29. Qg3 Nh5 30. Qg4 $18) 26. gxf5 Qxg2+ 27. Bxg2 bxc5 28. Ba3 $6 Nc4 {
Serious mistake, after natural} (28... Nxf5 $142 $1 {Black,s could get very
nice position, for example} 29. Bh3 (29. Bxc5 Nxh4 30. Bxa7 Rc2 (30... Rc3 31.
Bh1 {[%csl Ga4][%cal Ra4a8]}) 31. Bh1 Nf5 32. Ra3 $140 Nh5 $1 $40 {[%cal Rh5f4,
Rf5h4]}) 29... Nxh4 30. Bxc8 Nxf3+ 31. Kf2 Nxe1 32. Bf5 g6 33. Rxe1 gxf5 34.
dxc5 Ng4+ 35. Kf3 d4 $1 $17) 29. Bxc5 {[%csl Ga4,Ra7]} Nxe3 30. Bxa7 Rc2 (30...
Nxf5 31. Rxe8+ Rxe8 32. a5 Nxh4 33. a6 Nxg2 34. Kxg2 Ra8 35. Rb1 $1 $16) 31.
Bh3 $1 {[%cal Ge1e8]} Ra8 (31... Nc4 32. Rxe8+ Nxe8 33. a5 Nd2 34. Bg2 $18) 32.
Rxe3 (32. Bc5 $5) 32... Rxa7 33. Rb3 h6 (33... Kf8 $5) 34. a5 {[%cal Ra5a6,
Rb3b7]} Nh5 35. Bf1 (35. a6 $5 Nf4 36. Bf1 $18) 35... Ng3 (35... Nf4 36. a6)
36. Bd3 Rd2 37. a6 $18 {[%cal Rb3b7]} Ne2+ 38. Bxe2 Rxe2 39. Rb7 Re7 (39... Ra8
40. a7 Kf8 41. Rab1 Ree8 42. Rd7 $18 {[%cal Rb1b7,Rb7f7]}) 40. Rxe7 1-0

[Event "Tata Steel-A 78th"]
[Site "Wijk aan Zee"]
[Date "2016.01.23"]
[Round "7"]
[White "Mamedyarov, Shakhriyar"]
[Black "Hou, Yifan"]
[Result "1-0"]
[ECO "E51"]
[WhiteElo "2747"]
[BlackElo "2673"]
[Annotator "Roiz,M"]
[PlyCount "109"]
[EventDate "2016.01.16"]
[EventType "tourn"]
[EventRounds "13"]
[EventCountry "NED"]
[EventCategory "20"]
[SourceTitle "CBM 171"]
[Source "ChessBase"]
[SourceDate "2016.03.14"]
[SourceVersion "2"]
[SourceVersionDate "2016.03.14"]
[SourceQuality "1"]

1. d4 e6 2. c4 Nf6 3. Nc3 Bb4 4. Nf3 d5 5. Qa4+ Nc6 6. e3 O-O 7. Qc2 Bd6 8. h3
{Shakhriyar chooses a very rare prophylactic move.} ({The most common
alternative is} 8. c5 Be7 9. Bb5 Nb8 (9... Bd7 10. a3 a6 11. Bd3 a5 12. Rb1 b6
13. b4 axb4 14. axb4 bxc5 15. bxc5 Rb8 16. Bb5 Na5 17. Be2 Rxb1 18. Nxb1 $14 {
Ivanchuk,V (2753)-Alekseev,E (2692)/Riga 2014}) 10. a3 b6 11. b4 a5 12. Rb1 c6
13. Bd3 axb4 14. axb4 Nbd7 15. O-O Qc7 16. Ne2 Ba6 $11 {Bacrot,E (2711)
-Aronian,L (2777)/Baden Baden GER 2015}) 8... dxc4 {Hou Yifan doesn't see a
reason for deviating from the usual plan.} ({Another principled continuation
was} 8... Nb4 $5 9. Qd1 c5 10. dxc5 Bxc5 11. a3 Nc6 12. b4 Bd6 13. cxd5 exd5
14. Bb2 {, but in this type of position h2-h3 turns out to be quite useful.
Still, Black's position seems perfectly playable here.}) 9. Bxc4 e5 10. O-O a6
{This logical move is a novelty. It definitely makes sense to secure the
dark-squared bishop. In addition, Black may consider the somewhat aggressive
way of development - b7-b5, followed by fianchetto.} (10... Bd7 11. d5 (11. Rd1
Qc8 12. dxe5 Nxe5 13. Nxe5 Bxe5 14. e4 Bxh3 15. gxh3 Qxh3 16. f3 Qxf3 $132 {
Swiercz,D (2614)-Moiseenko,A (2698)/Hockenheim GER 2014}) 11... Ne7 12. Rd1 (
12. e4 $5) 12... h6 13. b3 a6 14. a4 Ng6 15. Bb2 $14 {Bu Xiangzhi (2710)-Yu
Yangyi (2734)/Shenzhen CHN 2015}) 11. a3 ({The above-mentioned idea works well
after} 11. Rd1 exd4 12. exd4 b5 $1 13. Be2 (13. Bb3 Na5 $11) 13... Nb4 14. Qb1
Bb7 {with excellent play for Black.}) 11... Bd7 12. Rd1 h6 {Black reasonably
makes another waiting move and doesn't release the tension.} ({However,} 12...
exd4 $5 13. exd4 Qc8 14. Bg5 Bf5 15. Qc1 Ne4 {looks perfectly playable too.})
13. b4 ({The ambitious} 13. d5 Ne7 14. e4 Ng6 {allows White to seize a lot of
space, but offers Black rich counterplay on the k-side.}) 13... Qe7 $6 {
The first step in the wrong direction - Black's setup loses harmony now, since
the e7-spot isn't vacant for the knight.} ({The natural} 13... exd4 {was much
better:} 14. exd4 (14. Nxd4 {is also quite harmless:} Nxd4 15. Rxd4 Be5 16. Rd1
Qe7 $11) 14... Ne7 15. Ne5 Be6 16. Bxe6 fxe6 $11) 14. d5 ({Another way of
maintaining the pressure was} 14. Bb2 exd4 15. exd4 Rae8 16. Re1 Qd8 17. Nd5
Nxd5 18. Bxd5 $14) 14... Na7 15. e4 Nc8 $1 {The best choice from a practical
point of view. This move is connected with some q-side activity.} ({After} 
15... Nb5 16. Ne2 $1 c6 17. dxc6 Bxc6 18. Ng3 $14 {Black would be doomed to a
passive defence.}) 16. Be3 a5 17. b5 {The closed character of position
definitely suits Black here.} ({Possibly, more promising was} 17. Bd3 axb4 18.
axb4 Rxa1 (18... Nb6 19. Bc5 $14) 19. Rxa1 Bxb4 20. Rb1 Re8 21. Rb3 $1 (21.
Nxe5 Bxc3 22. Nxd7 Qxd7 23. Qxc3 Nxe4 24. Bxe4 Rxe4 25. Rxb7 Qxd5 26. Qxc7 Rc4
$11) 21... Bxc3 22. Qxc3 Nd6 23. Nd2 $14 {with more than a sufficient
compensation for a pawn.}) 17... Re8 {This move seems pointless - there is no
danger for the Pe5. At the same time, the rook cannot support the thematic
f7-f5 advance any longer.} ({More to the point was} 17... Nh5 $1 18. Re1 f5 19.
Bd3 f4 20. Bd2 Nb6 $132 {getting some activity on the opposite side of the
board.}) 18. a4 Bb4 19. Bd3 Nb6 (19... Nh5 20. Nd2 Nf4 21. Ne2 Nxd3 22. Qxd3
$14) 20. Nd2 Bc5 $6 {This decision seems dubious - the exchange of the
dark-squared bishops would offer White full control over the c5-spot.} (20...
Nh5 21. Ne2 Rac8 $14) 21. Bxc5 Qxc5 22. Nb3 Qd6 23. Be2 {It definitely makes
sense to restrict the activity of Black's pieces.} ({However, a more energetic
move would be} 23. Ne2 $1 c6 24. dxc6 bxc6 25. Nc5 cxb5 26. Nxd7 Qxd7 27. Bxb5
$16) 23... Rec8 24. Rab1 Qe7 25. Qc1 {White is not in a hurry - the queen is
coming to c5.} (25. Qd2 Ne8 26. Rdc1 Nd6 27. Nc5 $14) 25... Ne8 26. Qe3 Nd6 27.
Rbc1 Qg5 $6 {Liquidating into an endgame definitely suits White here - now
Black lacks any active ideas.} (27... Ndc4 28. Qc5 Nd6 29. Nd2 $14) 28. Qxg5
hxg5 29. Nc5 Kf8 {Black is doomed to passive defence now. Still, it's not easy
for White to make progress on the queenside.} 30. Nb1 $1 {GM Mamedyarov finds
an effective way of regrouping the pieces.} Ke7 31. Nd2 g6 32. Rc3 Be8 33. Rb1
Rab8 34. Ndb3 $2 {A serious inaccuracy - Black gets an excellent chance to
release the tension!} ({The correct way was} 34. Nc4 Nbxc4 35. Bxc4 {intending
to exert strong pressure along the c-file. Now if} b6 36. Na6 Nxe4 {, then} 37.
Re3 Nc5 38. Nxb8 Rxb8 39. Rxe5+ Kd6 40. Rxg5 Nxa4 41. Rg3 $16 {with excellent
winning chances.}) 34... c6 $1 {That's the point! Black manages to get rid of
a main weakness.} 35. bxc6 bxc6 36. dxc6 ({After} 36. Ba6 Rc7 37. dxc6 Bxc6 38.
Rbc1 Be8 39. Nxa5 Ra8 40. Nab7 Rxa6 41. Nxa6 Rxb7 42. Rc7+ Rxc7 43. Rxc7+ Kd8
44. a5 Na4 $11 {Black should be able to neutralise the a-passer.}) 36... Bxc6 (
{Another possibility was} 36... Rxc6 37. Nxa5 Rcc8 38. Rb4 Nxa4 39. Rxa4 Bxa4
40. Nxa4 Nxe4 $11) 37. Nxa5 Nxa4 $4 {A terrible blunder. Luckily for
Shakhriyar, he gets another chance to get the full point.} ({The patient} 37...
Be8 $11 {would solve all the problems.}) 38. Rxb8 Nxc3 39. Bg4 $1 {This
tactical resource was underestimated by Hou Yifan. Now Black cannot avoid loss
of material.} f5 {The only way to save a piece.} (39... Rxb8 40. Nxc6+ Ke8 41.
Nxb8 $18) 40. exf5 gxf5 41. Rxc8 Nxc8 42. Nxc6+ Kd6 43. Bxf5 Kxc6 44. Ne6 $18 {
Despite the limited material balance, the resulting endgame is hopeless for
Black.} Nd6 45. Bg4 Nde4 46. f3 Ne2+ 47. Kf1 N2g3+ 48. Ke1 Nc5 49. Nxg5 {
Finally White collects another pawn. The rest was quite easy.} Nd3+ 50. Kd2 Nf4
51. Ke3 Nh1 52. Ke4 Kd6 53. Nf7+ Ke7 54. Nxe5 Nxg2 55. Kf5 1-0

[Event "AUT-chT 1819"]
[Site "Austria"]
[Date "2018.11.17"]
[Round "3.3"]
[White "Buhmann, Rainer"]
[Black "Bluebaum, Matthias"]
[Result "1-0"]
[ECO "E51"]
[WhiteElo "2574"]
[BlackElo "2620"]
[Annotator "Sadorra, Julio"]
[PlyCount "87"]
[EventDate "2018.11.15"]
[EventType "team-tourn"]
[EventRounds "11"]
[EventCountry "AUT"]
[SourceTitle "CBM 187 Extra"]
[Source "ChessBase"]
[SourceDate "2018.11.04"]
[SourceVersion "1"]
[SourceVersionDate "2018.11.04"]
[SourceQuality "1"]
[WhiteTeam "Maria Saal"]
[BlackTeam "Jenbach"]
[WhiteTeamCountry "AUT"]
[BlackTeamCountry "AUT"]

{This game, which was played in the Austrian league between two very active
German professionals and opening theoreticians, features a topical variation
in the Rubinstein Nimzo-Indian.} 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Bb4 5. e3
{The game transposes from Ragozin to Nimzo-Indian.} O-O 6. Bd2 $5 {This
variation has become very trendy since 2016. I remember the first super-GMs to
use it effectively in practice, at least those who caught my eye, are
Riazantsev, Matlakov and Fedoseev.} b6 7. cxd5 (7. Bd3 {gives Black an option
to play} Ba6 $5) 7... exd5 8. Rc1 ({The other popular way to continue is to
omit Rc1:} 8. Bd3 Bb7 9. O-O Nbd7 10. Ne5 (10. Rc1 a6 {transposes to main game.
}) 10... Nxe5 11. dxe5 Nd7 12. f4 (12. Qc2 g6 13. f4 Nc5 14. Ne2 Bxd2 (14... a5
$5 15. Bc3 (15. a3 $4 Bxd2 16. Qxd2 Nb3) (15. Rad1 $4 Nxd3 16. Qxd3 Ba6) 15...
Nxd3 16. Qxd3 Ba6 17. Qd2 Bxc3 18. bxc3 c5 $15) 15. Qxd2 Nxd3 16. Qxd3 c5 $11 {
0-1 (67) Adly,A (2586)-Carlsen,M (2786) Dresden 2008}) 12... Nc5 13. Bc2 (13.
Be2 d4 $1) (13. Bxh7+ $6 Kxh7 14. Qh5+ Kg8 15. Rf3 f6 $17) (13. Bf5 g6 $1 (
13... d4 14. Ne2 Bxd2 15. Qxd2 d3 16. Nc1 Qd5 17. b4 Na6 18. Rb1 $14) 14. Bh3
Ba6 $132) 13... d4 $1 14. Na4 Bxd2 15. Qxd2 d3 $5 (15... dxe3 16. Qxe3 Qd5 (
16... Nxa4 17. Bxa4 Qd5 18. Qf2 Rad8 19. Bb3 Qe4 20. Rfe1 Qb4 21. Rad1 $14) 17.
Qh3 h6 18. Rad1 $36) 16. Nxc5 dxc2 17. Qxd8 Rfxd8 18. Nxb7 Rd2 19. Rac1 Rb8 $11
) 8... a6 9. Bd3 Bb7 10. O-O Nbd7 11. Ne5 Qe7 $6 {This move looks logical and
solid as it attacks e5 and defends the bishop on b4, unfortunately it is not
enough for Black to solve his problems.} ({The most natural reaction is} 11...
Nxe5 12. dxe5 Nd7 13. f4 Nc5 {and similar to the notes earlier, White has the
important reply} 14. Bc2 $1 {in order to meet} d4 {with} 15. Na4 Bxd2 16. Qxd2
Nxa4 (16... d3 17. Nxc5 dxc2 18. Qxd8 Rfxd8 19. Nxb7 Rd2 20. h4 $1 Rb8 21. Kh2
Rxb7 22. Kg3 $16 {[%cal Gf1f2]}) 17. Bxa4 {White has a nice edge due to his
space and better placed pieces.} dxe3 (17... d3 18. Rfd1 Be4 19. Qb4 Bb7 20.
Bc6 $16) 18. Qxe3 Qd5 19. Rf2 c5 20. Rd2 (20. Bb3 {1-0 (40) Sandipan,C (2535)
-Stark,L (2374) Tegernsee 2018}) 20... Qe4 (20... Qxa2 21. Bb3 Qa5 22. e6 $40)
21. Qxe4 Bxe4 22. Bd7 $1 Rfd8 23. Rcd1 Kf8 24. Kf2 $14) ({Another misguided
way to continue is} 11... c5 $6 {which simply gives up the bishop pair.} 12. a3
{It is also important to play this now before Black can get counterplay with
c4, b5 etc.} Bxc3 13. Bxc3 Nxe5 (13... Ne4 14. Nxd7 $1 (14. Bxe4 dxe4 15. Nxd7
Qxd7 16. dxc5 Qxd1 17. Rfxd1 bxc5 18. Ba5 Rac8 19. Bb6 c4 20. Rd4 $16) 14...
Qxd7 15. dxc5 Nxc5 16. Bb1 $16) (13... c4 14. Bf5 $36) 14. dxe5 Ne4 15. Bxe4
dxe4 {I think Black misassessed this position, underestimating the dangers in
his kingside and superiority of White's pieces which White quickly now
demonstrates:} 16. Qg4 $1 Qe7 17. Rfd1 Rad8 18. Rd6 $1 {[%csl Gd6,Ge5,Rg7,Rg8]
[%cal Gc3g7,Gg4g7]} h5 (18... Bc8 19. Qg3 $40) 19. Qxh5 Rxd6 20. exd6 Qxd6 21.
Qg4 ({Another strong way to continue is} 21. Rd1 Qe6 22. Rd2 $1 $16 {[%cal
Gh5d1,Rd1d8]}) 21... f6 22. Rd1 $16 {1-0 (82) Tomashevsky,E (2696)-Buhmann,R 
(2596) Minsk 2017. This unpleasant experience with Black against this
variation may very well be the reason that made Buhmann take up this system as
White!}) (11... Be7 12. f4 c5 13. Qf3 $36) ({Also tested lately is} 11... Bd6 {
but after the standard follow-up} 12. f4 Ne4 13. Nxe4 dxe4 14. Bc4 {White
retains better chances owing to his better structure and more active pieces.}
Nf6 15. Qb3 Qe7 16. Be1 $36 {1-0 (31) Rakhmanov,A (2652)-Khademalsharieh,S 
(2424) Dubai 2018}) 12. f4 c5 13. Na4 $5 $146 ({Previously played here was} 13.
a3 {which is still good to obtain the advantage:} Bxc3 14. Bxc3 Rfd8 15. Qf3
Nf8 (15... Ne4 16. Bxe4 dxe4 17. Qg3 f6 (17... Nxe5 18. dxe5 $40) 18. Ng4 Kh8
19. Qh4 $40 {[%cal Gf4f5,Gf1f4]}) 16. Qh3 $40 {1-0 (47) Parligras,M (2599)
-Laznicka,V (2668) Gjakova 2016}) 13... c4 $6 (13... Bxd2 {is difficult to
enter due to the line} 14. Qxd2 c4 15. Bf5 {Black is in a difficult spot here,
and has to dig deep to find defensive resources.} Rad8 $1 (15... Rae8 $1 16. b3
b5 17. Nxd7 Nxd7 18. Bxd7 Qxd7 19. Nc5 Qe7 $132) 16. Qf2 (16. Nxd7 $2 Nxd7 17.
Bxd7 Qxd7 18. Nxb6 Qb5) (16. b3 b5 17. Nxd7 Nxd7 18. Bxd7 Rxd7 19. Nc5 Rd6 $11)
16... b5 (16... g6 17. Bc2 $1 (17. Bb1 b5 18. Nc3 b4 19. Ne2 a5 20. Qh4 Rde8
21. g4 Nxe5 22. fxe5 Nd7 $13) 17... b5 18. Nc3 b4 19. Ne2 a5 20. Qh4 Rde8 (
20... Rfe8 21. g4 $40 {[%cal Gf1f3,Gf3h3,Gc2a4]}) 21. Ba4) 17. Qh4 $1 $40) 14.
Bf5 ({Equally unpleasant to meet is} 14. Bxb4 Qxb4 15. Bf5 $1 Rad8 16. a3 Qe7
17. Nc3 b5 (17... g6 18. Bc2) 18. Qe1 $14 {[%cal Ge1h4,Gf1f3,Gf3h3,Gg2g4] with
similar attacking ideas examined in the lines earlier.}) 14... Rad8 ({It's
almost impossible for Black to take on d2 as it transposes to a line or
position that he was avoiding after Bxd2 a move earlier.} 14... Bxd2 15. Qxd2 {
See notes earlier.}) 15. Bxb4 Qxb4 16. b3 $6 ({It's best for White to play} 16.
a3 $1 Qe7 17. Nc3 $14 {transposing to notes under move 14. Bxb4.} (17. Qe1) (
17. Qf3)) 16... b5 17. Nxd7 Nxd7 18. Bxd7 Rxd7 19. Nc5 Re7 {This position is
objectively equal: White has superior minor piece against Black's pressure on
the e3-pawn. But practically, it's a bit easier to play for White as he can
organize some pressure on the kingside in the future while Black's queen and
bishop are out of play on the other side of the board.} 20. f5 f6 21. Qf3 Bc6
22. Rf2 (22. Nxa6 Qd2 23. Qf2 Qxe3 24. Nb4 Rc8 $11) 22... Rfe8 23. Re2 Qa3 (
23... a5 24. g4 $5 $13) 24. Rcc2 a5 25. Kf2 a4 26. bxc4 bxc4 27. g4 Qb4 28. Rb2
Qa5 29. a3 Kh8 30. Rb4 (30. Qf4 $5 {[%csl Rc6,Rd6,Re7][%cal Rf4d6,Rb8h8,Gb2b8]}
c3 31. Rb4 $36) 30... c3 31. Qf4 h6 32. Rc2 $1 {Simple and good.} (32. Qd6 {
is a bit risky but also works:} Bb5 33. Ne6 $1 {A key move that has to be
foreseen before deciding to play Qd6.} Bxe2 $2 (33... Rxe6 34. fxe6 Bxe2 35.
Kxe2 c2 36. Kd2 Rc8 37. Kc1 $16) 34. Qxe7 Rxe7 35. Rb8+ Kh7 36. Nf8+ Kg8 37.
Ng6+ Kf7 38. Rf8#) 32... Rxe3 {Otherwise, Black simply loses a pawn.} 33. Qxe3
Rxe3 34. Kxe3 $16 h5 35. Rxc3 $6 {White misses a great chance to finish the
game here with a nice study-like idea.} (35. Rb8+ Kh7 {It's likely that
Buhmann checked this line but failed to spot the key idea here.[#] White to
play} 36. Z0 (36. Ne6 hxg4 37. Nf8+ Kh6 38. Ne6 (38. Ng6 Kg5 {The king escapes!
}) 38... Kh7 $11) (36. g5 $3 {A logical move after seeing the problem with the
direct line staring with 36. Ne6.} fxg5 (36... Qc7 37. g6+ Kh6 38. Rh8+ Kg5 39.
Ne6+) 37. Ne6 {Black cannot prevent mate} Qa7 {[%csl Gf7] Only way to prevent
direct mate.} (37... g6 38. f6) (37... h4 38. Nxg5+ Kh6 39. Nf7+ Kh5 40. h3 $18
) 38. Rf8 $1 Qe7 39. Rxc3 Be8 (39... Bd7 40. Rf7 $18) 40. Kd2 Qd6 41. Nxg5+ Kh6
{[#] Here's another amusing position with a study-like winning move for White!}
42. Rc6 $3 $18)) 35... hxg4 36. Kf4 {Despite the miss earlier, I think Black
still faces practical problems as White pieces now coordinate to create
threats around the Black king.} Bb5 $6 ({It's better to bring the queen
quickly close to her majesty.} 36... Qc7+ $1 37. Kxg4 Kg8 {with the idea of
taking h2} 38. Rh3 $13 (38. Ne6 Qxh2 39. Rxc6 Qg2+ 40. Kf4 Qf2+ $11) 38... g6 (
38... Kf7 39. Ne6) 39. Ne6 gxf5+ 40. Kxf5 Bd7 41. Rg3+ Kh8 (41... Kh7 $2 42.
Rb2 $1 {The rooks now coordinate} Bxe6+ (42... Qd6 43. Rh3+ Kg8 44. Rg2+ $18)
43. Kxe6 Qc6+ 44. Kf7 $16) 42. Kxf6 Qd6 43. Rh3+ Kg8 44. Rg3+ $11) 37. Ne6 {
While both players are not seeing the most accurate moves, the position is
obviously not easy to play otb as there's many equally good possibilities in
each position and accurate analysis is required. In the end it's Black that
makes the last error.} (37. Re3 $1 Qc7+ 38. Kxg4 Bf1 (38... Bc4 39. Rb7) 39.
Rb2 $1 {Keeping the kingside under control while limiting the enemy bishop's
mobility.} (39. Ne6 Qxh2) 39... Kg8 40. Ne6) 37... Qa6 38. Kxg4 Be2+ 39. Kg3
Kh7 40. Nf4 Bc4 $2 {This natural-looking move is a mistake as it allows White
to coordinate his pieces in launching a mating attack!} 41. Kf2 {[%cal Rb4b8,
Rc3h3,Rf4g6]} Qc8 42. Ne6 Kg8 43. Rb6 $1 Kh8 44. Rd6 {Black resigns as cannot
prevent losing his queen or getting mated. Overall, the Bd2 variation of the
Nimzo-Indian Rubinstein requires Black to know exactly what he's doing lest he
gets in trouble as White's moves come easily with Ne5, f4, Qf3, Be1-h4, Bf5
etc. This game, and other recent games included in the sub-variations, clearly
shows the practical dangers that faces Black even at the professional level.}
1-0

[Event "EU-ch 18th"]
[Site "Minsk"]
[Date "2017.06.08"]
[Round "9"]
[White "Navara, David"]
[Black "Ivanisevic, Ivan"]
[Result "1-0"]
[ECO "E51"]
[WhiteElo "2739"]
[BlackElo "2638"]
[Annotator "Stohl,I"]
[PlyCount "105"]
[EventDate "2017.05.30"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "BLR"]
[SourceTitle "CBM 179"]
[Source "ChessBase"]
[SourceDate "2017.07.12"]
[SourceVersion "1"]
[SourceVersionDate "2017.07.12"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 d5 6. Nf3 {Definitely the
standard and most natural & usual move.} ({However, only a few months ago
Navara preferred to employ a different setup, namely transposing into a
Carlsbad structure with} 6. cxd5 exd5 7. Nge2 Re8 ({Earlier even Kasparov used
this idea with success, a famous example is} 7... c5 8. O-O Nc6 9. a3 cxd4 10.
exd4 Bxc3 $6 11. bxc3 $1 Ne7 12. Qc2 Bd7 13. Bg5 Ng6 14. f4 h6 15. Bxf6 Qxf6
16. f5 Ne7 17. Ng3 Nc8 18. Rf4 Nd6 19. Qf2 Rfe8 20. Nh5 Qd8 21. Nxg7 $1 $16 {
->, Kasparov,G (2735)-Tal,M (2605) Brussels 1987}) 8. O-O (8. Bd2 Bf8 9. O-O b6
10. Rc1 (10. Nf4 Bb7 11. Qf3 a6 12. Rad1 Ra7 $5 13. Bc2 c5 14. dxc5 bxc5 15.
Qh3 g6 16. Nce2 Bc6 17. Bc3 Nbd7 18. Bb3 Qa8 19. g4 $2 Ne5 20. g5 d4 21. f3
dxc3 22. gxf6 c4 23. Bc2 Nxf3+ 24. Kf2 cxb2 $19 {Navara,D (2735)-Inarkiev,E 
(2686) Gjakova 2016 See the notes to this game in CBM 173 by Besenthal}) 10...
c5 11. Nf4 Bb7 (11... Ba6 $5 12. Qf3 Bxd3 13. Nxd3 Nc6 14. dxc5 bxc5 15. Rfd1
c4 16. Nf4 Ne5 17. Qh3 Rb8 18. Rc2 Nd3 19. Qf3 d4 20. exd4 Rxb2 $17 {Nakamura,
H (2774)-Gelfand,B (2733) Monte Carlo rpd 2011}) 12. Qf3 Na6 13. Rfd1 cxd4 14.
exd4 Nc7 15. Bc2 Bd6 16. Be3 Ne4 17. Ba4 Re7 18. Bb3 Qd7 19. h3 Nxc3 20. bxc3
Bc6 21. Nh5 Re6 22. Bc2 Ba4 23. c4 dxc4 24. d5 Rg6 $1 $13 {/=/+, Carlsen,M 
(2832)-Karjakin,S (2781) Stavanger 2017}) 8... Bd6 9. Bd2 Nbd7 (9... a6 10. Rc1
b6 11. Ng3 c5 12. Bb1 Bb7 (12... Be6 13. dxc5 Bxc5 (13... bxc5 $142 $13) 14.
Nce2 Nbd7 15. Bc3 Bd6 16. Nd4 Rc8 17. Qe2 b5 18. Nxe6 fxe6 19. e4 Bf4 20. Rce1
Be5 21. Bxe5 Nxe5 22. f4 Qb6+ 23. Kh1 Ng6 24. e5 Nd7 25. Qh5 Ndf8 26. f5 $40 {
Navara,D (2742)-Stefansson,H (2574) Baku olm 2016}) 13. dxc5 bxc5 14. e4 d4 15.
Na4 Nbd7 16. Nf5 Bf8 17. f3 Bc6 18. Re1 Bb5 19. b3 Bxa4 20. bxa4 Re6 21. a3 Qb8
22. Ba2 Rb6 23. Rb1 Rxb1 24. Qxb1 g6 $2 (24... Ne5 $13) 25. Bxf7+ $1 Kxf7 26.
Qa2+ Ke8 27. Qe6+ Kd8 28. Ba5+ {1-0, Peralta,F (2574)-Delorme,A (2514)
Barcelona 2017}) 10. Rc1 a6 11. Ng3 Nf8 $146 12. Nf5 Bxf5 13. Bxf5 c6 14. f3
Ne6 15. Be1 c5 16. Kh1 cxd4 17. exd4 Bf4 18. Bd2 Qd6 19. Ne2 Bxd2 20. Qxd2 g6
21. Bb1 Rac8 22. Rxc8 Rxc8 $11 23. f4 $6 Ng7 24. f5 Re8 25. Ng3 Ngh5 26. Nxh5
Nxh5 27. Kg1 Nf6 $15 {Navara,D (2739)-Kryvoruchko,Y (2714) Chartres 2017
Probably this game discouraged David and in Minsk he treated the Nimzo in a
more classical fashion.}) 6... Nc6 {The Ragozin-like move has its fans and
Ivanisevic has played it in the past.} (6... b6 7. O-O Bb7 8. cxd5 exd5 9. a3
Bd6 10. b4 a6 {is a line, which has occurred in Navara's practice with both
colours:} 11. Qb3 (11. Ne5 Nc6 $5 $146 (11... c5 12. bxc5 bxc5 13. Rb1 Qc7 14.
f4 cxd4 (14... Nc6 15. Ng4 $1 Nxg4 16. Nxd5 Qd7 17. Nb6 Qe7 18. Qxg4 $18 {
Navara,D (2732)-Nguyen,T (2441) Ostrava 2017}) 15. exd4 Qxc3 16. Rxb7 Qxd4+ 17.
Kh1 Bxe5 18. fxe5 Ne4 $132 (18... Qxe5 19. Bb2 $40)) 12. f4 Ne7 13. Qf3 (13.
Qc2 $5) 13... c5 14. bxc5 bxc5 15. Rb1 Rb8 16. g4 cxd4 17. exd4 Ba8 18. g5 Ne4
19. Nxd5 Nxg5 20. fxg5 Bxd5 21. Rxb8 Bxb8 22. Be4 Qb6 23. Bxd5 Qxd4+ 24. Kg2
Qxd5 25. Qxd5 Nxd5 26. Nd7 Rd8 27. Nxb8 Rxb8 28. Rd1 Rd8 29. Kf3 $132 {Navara,
D (2739)-Neiksans,A (2599) Minsk 2017 White's compensation was enough to hold
the endgame.}) 11... Qe7 12. Rb1 Nbd7 13. a4 Rfe8 14. h3 (14. b5 axb5 15. axb5
Ne4 (15... Qe6 16. Ng5 $5 Qe7 17. f4 $14) (15... h6 $5) 16. Nxd5 Bxd5 17. Qxd5
Nc3 18. Qb3 Nxb1 19. Bxb1 $146 (19. Qxb1 Nf6 20. Bb2 h6 $13) 19... Nf6 20. e4
Nxe4 21. Re1 {Demuth,A (2515)-Navara,D (2751) Montpellier 2015} Ra1 22. Qb2
Rxb1 23. Qxb1 h6 $11) 14... c6 15. a5 b5 16. Nd2 Rad8 17. Re1 (17. e4 dxe4 18.
Ndxe4 c5 $1 19. dxc5 Bxc5 (19... Bb8 $1 $44) 20. Bg5 Bd4 21. Rfe1 Kh8 22. Ne2 (
22. Be3 $11) 22... Ba7 23. Nf4 $2 Bxe4 24. Rxe4 Bxf2+ $1 25. Kf1 Ne5 $17 {
Michalik,P (2508)-Navara,D (2710) Czechia 2013}) 17... Nf8 18. e4 Ne6 19. Nf3
dxe4 20. Nxe4 Nxe4 21. Bxe4 Qf6 22. Bb2 Ng5 23. Nxg5 Qxg5 24. Rbd1 Re7 25. Bc1
Qf6 $11 {½, Noeth,D (2122)-Hoffmann,F (2046) email 2010}) ({However, Black's
most popular reaction by far is nowadays} 6... c5 7. O-O cxd4 8. exd4 dxc4 9.
Bxc4 b6 {A recent example went} 10. Bg5 Bb7 11. Qe2 Bxc3 12. bxc3 Nbd7 13. Bd3
(13. Rac1 Qc7 14. Nd2 {leads to more complex play}) 13... Qc7 14. c4 Ng4 15.
Be4 Bxe4 16. Qxe4 Ngf6 17. Qd3 Rac8 18. Rfc1 Rfe8 19. Qb1 h6 20. Bxf6 Nxf6 21.
a4 Red8 22. a5 bxa5 23. Qa2 Nd5 24. Qxa5 Qxa5 25. Rxa5 Ne7 26. Rxa7 Nc6 $11 {
Korobov,A (2711)-Yu,Y (2749) WChT Khanty-Mansiysk 2017}) 7. O-O dxc4 {Black
can postpone the release of the tension:} ({Ivanchuk successfully tested} 7...
h6 8. cxd5 (8. h3 $142 $1) 8... exd5 9. h3 Bd6 10. a3 a6 11. Qc2 Ne7 12. b4 c6
13. Bb2 Re8 14. Rac1 g6 15. Ne5 Bf5 16. Bxf5 Nxf5 17. g4 Ng7 18. f4 Qe7 19.
Rce1 Rad8 20. e4 dxe4 21. Nxe4 Nxe4 22. Qxe4 Bc7 23. Qf3 Qh4 24. Bc3 Ne6 25.
Re4 Bb6 $15 {Khusnutdinov,R (2458)-Ivanchuk,V (2747) Doha blitz 2016}) ({
More usual and possibly more useful is} 7... a6 8. a3 (8. h3 h6 (8... dxc4 9.
Bxc4 Bd6 10. e4 e5 11. Be3 b5 12. Bb3 Bb7 13. dxe5 Nxe5 14. Nxe5 Bxe5 15. Bc5
Bd6 16. Bxd6 cxd6 17. Qd4 Qe7 18. Rad1 Rad8 19. Rfe1 Rfe8 20. a4 $36 {Gulko,B 
(2535)-Pogonina,N (2451) Marianske Lazne 2011}) 9. Re1 dxc4 10. Bxc4 Bd6 11. e4
e5 12. Be3 Bd7 13. a3 Qc8 14. Rc1 Re8 15. d5 Ne7 16. Bf1 Qd8 17. Nd2 Ng6 18. a4
Qe7 19. Nc4 Bb4 20. Qc2 b5 21. Nd2 Rab8 22. axb5 axb5 23. Na2 Bd6 24. Nb3 Ra8
25. Ra1 b4 26. Nc5 Reb8 27. b3 Be8 28. Na6 Rc8 29. Qc4 c6 30. N2xb4 cxd5 31.
Nxd5 Nxd5 32. Qxd5 Bc6 $132 {Lautier,J (2653)-Mitkov,N (2509) Batumi 1999})
8... dxc4 9. Bxc4 Bd6 10. h3 (10. Qc2 e5 11. h3 Bd7 12. d5 Ne7 13. Rd1 Ng6 14.
b4 Qe7 15. Nd2 Ne8 16. Nce4 a5 17. Rb1 axb4 18. axb4 Bxb4 19. Qb2 Bxd2 20. Bxd2
Bf5 21. Bd3 Nd6 22. Bb4 Bxe4 23. Bxe4 Ra7 24. Rdc1 $132 {Ibragimov,I (2586)
-Gulko,B (2561) Saint Louis 2009 White has enough play for the pawn to hold
the balance.}) 10... b5 11. Bd3 Bb7 12. Qc2 e5 13. Ne4 exd4 14. exd4 h6 15. Bd2
Rb8 16. Nc5 Bxc5 17. dxc5 Ne7 18. Rfe1 Bxf3 19. gxf3 Nc6 20. Bc3 b4 21. axb4
Nxb4 22. Bxb4 Rxb4 23. Bc4 Nh7 24. Qc3 Rb8 25. Rxa6 Qg5+ 26. Kh1 Qf5 27. f4 Nf6
$44 {Eljanov,P (2693)-Moiseenko,A (2711) Kiev 2012}) 8. Bxc4 Bd6 {[%cal Ye6e5]}
9. Bb5 {tries to make the liberating advance more difficult for Black.} (9. Nb5
Be7 (9... a6 10. Nxd6 cxd6 11. Bb3 h6 12. Bd2 e5 13. dxe5 dxe5 14. Bc3 Qe7 15.
Qc2 Rd8 16. h3 b5 17. Rfd1 Be6 18. Rxd8+ Rxd8 19. Nxe5 Nxe5 20. Bxe5 Bxb3 21.
Bxf6 Qxf6 22. axb3 g6 23. Re1 h5 24. e4 Qe5 25. h4 Qf4 26. g3 Qd2 $11 {
Pavlovic,M (2472)-Ivanisevic,I (2622) Kragujevac 2014}) 10. a3 a6 11. Nc3 Bd6 {
transposes with 2 extra moves to 7...a6 8.a3 from the previous note.}) (9. e4
e5 10. d5 (10. Bg5 exd4 11. Nd5 Bg4 12. Bxf6 gxf6 13. h3 Bh5 14. g4 Bg6 15.
Nxd4 {0-1 (61) Santacruz,F (2320)-Soppe,G (2350) Santiago de Chile 1987} Bxe4
$17) (10. dxe5 Nxe5 11. Nxe5 Bxe5 12. f3 Qe7 13. Kh1 c6 14. Qe1 b5 15. Bd3 Rd8
16. Bc2 b4 17. Ne2 Qc5 18. Bb3 Ba6 $36 {Vokac,M (2475)-Blatny,P (2485) Lazne
Bohdanec 1995}) 10... Ne7 {leads to a complex position, in which Black can
hold his own:} 11. h3 (11. Be3 Bg4 12. h3 Bh5 13. Bg5 Nc8 14. Rc1 h6 15. Bh4 a6
16. a3 Nb6 17. Be2 Bg6 18. Re1 Re8 19. Qb3 Rb8 20. Red1 Bh7 21. Qc2 Rc8 22. Nh2
Be7 23. Bg3 Bc5 24. Bf3 Nbd7 25. Ng4 Nxg4 26. Bxg4 Ra8 27. Qe2 Nf6 28. Bf5 Bd4
$132 {Boehme,S (2512)-Dammer,A (2407) email 2013}) 11... Ng6 (11... a6 12. a4 (
12. a3 $142) 12... Ng6 13. Nh2 h6 14. Be2 Bc5 15. Bg4 Nxg4 16. hxg4 Qh4 17. Qf3
Bd7 18. g3 Qe7 (18... Qh3 $1 $13 {/=/+}) 19. Rd1 f6 20. Nf1 Qe8 21. Be3 Bd6 22.
Qe2 Nh8 23. Kg2 Qg6 24. f3 Nf7 25. Nd2 Kh7 26. Rh1 Rh8 27. Rh4 Kg8 28. Rah1 Re8
29. Nc4 Bb4 30. Na2 Be7 31. Qc2 Nd6 32. Nxd6 Bxd6 33. Qb3 Kf7 34. Nc3 Ra8 35.
a5 Ke7 36. Qc4 Qf7 37. Bc5 Rhc8 38. f4 $36 {Biolek,R (2449)-Blatny,P (2390)
Czech Republic 2016}) 12. a3 a6 13. b4 Qe7 14. Rb1 Bd7 15. Re1 Rfb8 (15... b5
$5 16. Bd3 c5 $11) 16. Bf1 h6 17. Nd2 Nf4 18. Nc4 g5 19. Be3 Kh7 20. Nxd6 cxd6
21. Na4 Rg8 22. Nb6 Rad8 23. Nxd7 Rxd7 24. g3 Rc7 25. Kh2 $16 {Spielmann,A 
(2275)-Boguszlavszkij,J (2278) Budapest 2000 /In both examples White took over
the initiative only after some passive play by the opponent.}) 9... e5 {
Strategically more or less forced.} (9... Bd7 $143 10. e4 $36 {[%csl Gd4,Ge4]})
10. Bxc6 exd4 11. exd4 {[%mdl 32] White activates his Bc1 and plays for a
better pawn structure. He spurns the material offered:} (11. Bxb7 Bxb7 12. Nxd4
Qd7 13. Ndb5 Qc6 14. f3 Be5 15. Qc2 Rfd8 $32 16. a4 Qc4 17. Qf2 Rd3 18. Kh1
Rad8 19. e4 a6 20. Na3 Qb3 21. Nab1 Bd4 22. Qe2 Bc5 23. Re1 a5 24. Nd2 Qc2 25.
Nf1 Qxe2 26. Rxe2 Rd1 $1 $19 {Furman,S-Lipnitsky,I Baku 1951}) (11. Nxd4 bxc6
12. Nxc6 Qe8 {also gives Black good compensation:} 13. Nd4 Bd7 (13... Bb7 14.
Nf5 Be5 15. f3 g6 (15... Rd8 $1 $44) 16. Ng3 (16. Nh6+ Kg7 17. e4 $14) 16... h5
$6 (16... Rd8) (16... Qc6 $44) 17. Qc2 Rd8 18. e4 Bd4+ 19. Kh1 Kg7 20. Nge2 c5
21. Bg5 $16 {Norwood,D (2290)-Blatny,P (2355) Groningen 1984}) 14. Qd3 Rd8 15.
Rd1 Qe5 16. f4 Qh5 17. Nce2 Bg4 18. h3 Bb4 $1 $40 {Vinken,S-Langefeld,G DESC
email 2006}) 11... bxc6 12. Bg5 h6 {A useful luft.} (12... Re8 {is similar,
but less flexible. It was played in the following infamous game:} 13. Qd3 (13.
Re1 $142) 13... c5 14. dxc5 $4 Bxh2+ {0-1, Ghitescu,T-Fischer,R Leipzig 1960})
13. Bh4 Re8 {Gradually we have reached relatively untrodden territory with
only a few mostly older predecessors. The text move is arguably Black's best
bet.} (13... Rb8 14. Qc2 Rb6 (14... Re8 15. Rfe1 Rxe1+ 16. Rxe1 g5 17. Bg3 $16
Be6 $6 18. Rxe6 fxe6 19. Qg6+ Kf8 20. Ne5 Bxe5 21. Bxe5 Nd7 22. Qxh6+ Ke7 23.
Qxg5+ Ke8 24. Qg6+ Ke7 25. Qg7+ Ke8 26. Ne4 $18 {Fahlstroem,K (2260)-Abolins,I
(2300) corr 2002}) 15. Rfe1 Bf4 16. Ne2 Qd6 17. Nxf4 Qxf4 18. Bxf6 Qxf6 19. Ne5
Ra6 20. a3 Qd6 21. Rac1 $16 Bd7 22. Qc5 $6 Qxc5 23. Rxc5 Rd8 24. Rec1 Rb6 25.
b4 Ra6 26. R1c3 Be8 27. Nxc6 Bxc6 28. Rxc6 Rxd4 29. g3 Rxc6 30. Rxc6 a5 $1 $14
{Babula,V (2573)-Blatny,P (2512) Opava 2000}) (13... Bg4 14. h3 Bh5 15. g4 Bg6
16. Ne5 c5 (16... Bxe5 17. dxe5 Qxd1 18. Raxd1 Nd5 19. Nxd5 cxd5 20. Rxd5 Be4
21. Rd4 Bf3 22. Rc1 c6 23. Be7 Rfb8 24. b3 $16 {Portisch,L-Andersson,U Prague
1970}) 17. f4 $1 $16 (17. Nxg6 fxg6 18. dxc5 Bxc5 19. Qb3+ $14) 17... cxd4 18.
Qxd4 Bxe5 $2 19. Qxd8 Rfxd8 20. fxe5 Rd3 21. exf6 Rxh3 22. Kg2 $1 Rxh4 23. Kg3
$18 {Babula,V (2540)-Blatny,P (2515) Lazne Bohdanec 1996}) (13... Bf5 14. Re1
Re8 15. Rxe8+ Qxe8 16. Bxf6 gxf6 17. Nh4 Bg6 18. Qd2 Kg7 19. Re1 Qd7 20. Qe3
Rb8 21. Re2 Rd8 22. Ne4 (22. h3 $5 Bf8 23. Qg3 $14) 22... Re8 23. Qf3 f5 24.
Nxd6 cxd6 25. Re3 Rxe3 26. fxe3 c5 27. Qf4 Qe6 28. b3 c4 29. bxc4 Qxc4 30. h3
Qxa2 31. Qxd6 Qe6 32. Qa3 Qe4 33. Nf3 {Moisieev,O-Kozma,J Oslo 1954} f4 34.
exf4 Qxf4 35. Qxa7 Be4 $11) 14. Re1 (14. Qc2 g5 15. Bg3 Bxg3 16. fxg3 $5 (16.
hxg3 g4 17. Nd2 Qxd4 18. Rfe1 $44) 16... g4 17. Nh4 Qxd4+ 18. Kh1 Be6 19. Rf4
Qe5 20. Raf1 Nh5 21. Re4 Qg7 22. Qf2 Kh8 23. Qc5 Nf6 24. Ref4 Nd5 {Babula,V 
(2553)-Blatny,P (2418) Ostrava 2014} 25. Nf5 $1 $36) (14. Qd3 Be6 (14... g5 15.
Bg3 Nh5 16. Rfe1 $1 Nxg3 17. hxg3 Be6 18. Ne5 Qf6 19. Ne4 $16 {Aronin,
L-Chistiakov,A Sochi 1952}) (14... c5 $5 15. d5 Rb8 $132) 15. Rad1 Rb8 16. b3
Bg4 17. Rde1 Rxe1 18. Rxe1 c5 19. Nd5 g5 20. Nxg5 Bxh2+ 21. Kxh2 Qxd5 22. Ne4
Nxe4 23. Rxe4 Bf5 24. Qg3+ Bg6 25. Re5 Qxd4 26. f4 Qd3 27. f5 $16 {Lilienthal,
A-Estrin,Y Moscow 1953}) 14... Rxe1+ 15. Qxe1 g5 $146 {A novelty, but
unpinning the N doesn't fully solve Black's problems.} (15... Rb8 16. Bxf6 (16.
Qc1 $5 Bf5 17. Ne5 $14) 16... Qxf6 17. Qe8+ Kh7 18. Re1 Qf5 $11 19. Nh4 Qd7 20.
Qe4+ g6 21. Qb1 $6 Qd8 22. Nf3 Bf5 23. Qc1 c5 $15 24. d5 Qf6 25. Nd2 Bf4 $36
26. g3 Qg5 27. Rd1 Re8 28. Kh1 Bh3 $1 $19 29. Qc2 Bxd2 {0-1, Fischer,
J-Georgescu,V Romania 1961}) (15... Bf5 16. Ne5 Qe8 17. Bxf6 gxf6 18. Nc4 $14)
16. Bg3 Bf5 17. Ne5 Qe8 18. Rc1 ({A more energetic move is} 18. Qd2 $142 $1 c5
19. Re1 $14 {and White retains some pressure.}) 18... Nh5 19. Na4 {Now Black
gets reasonable counterplay.} ({The interesting} 19. Qe2 $5 {forces the Nh5 to
decide:} Nxg3 (19... f6 20. Nxc6 Nxg3 21. Qxe8+ Rxe8 22. hxg3 $14) 20. hxg3 {
[%cal Ye2f3]} c5 $5 (20... f6 21. Qf3 (21. g4 fxe5 22. gxf5 exd4 23. Ne4 (23.
Qc4+ Qf7 24. Qxd4 Qxf5 25. Ne4 Qe5 26. Qxe5 Bxe5 27. b3 a5 28. Rxc6 a4 $132)
23... Qe5 24. g3 Rf8 25. f6 $44) 21... fxe5 22. Qxf5 exd4 23. Ne4 $44) 21. Nd5
Kg7 22. Ne3 Bh7 23. Nf3 cxd4 24. Nxd4 Qe4 $132) 19... Qe6 $1 (19... f6 20. Nxc6
Qxe1+ (20... Be4 21. Na5 Nf4 22. Nc3 $14) 21. Rxe1 Nxg3 22. hxg3 Bd7 23. d5 Kf7
$44) 20. b3 (20. Nxc6 Nxg3 21. hxg3 Qxa2 $11) (20. Qc3 Qxa2 21. Qxc6 Rd8 $132)
20... Re8 21. Qc3 Qd5 ({The text is good enough, but there was the more forcing
} 21... f6 22. Nc4 (22. Nd3 Bxd3 (22... Bg6 $5 $11) 23. Qxd3 Qe1+ 24. Qf1 (24.
Rxe1 Rxe1+ 25. Qf1 Rxf1+ 26. Kxf1 Kf7 27. Ke2 Ke6 28. Kd3 f5 $11) 24... Qd2
$132) (22. Nxc6 Nf4 23. Bxf4 Bxf4 $44 {|^}) 22... Nf4 (22... Bf4 23. Nc5 Qe2
$13) 23. Bxf4 Bxf4 24. Ne3 Bxe3 25. fxe3 Qxe3+ 26. Qxe3 Rxe3 27. Rxc6 Be4 28.
Re6 f5 29. Nc5 Re2 $132) 22. Qxc6 Qxc6 23. Nxc6 Nf4 24. Bxf4 Bxf4 25. Ra1 Bd7
26. Nb4 Bxa4 (26... Re4 27. Nc5 (27. Rd1 Bxa4 28. bxa4 Bd6 $44) 27... Rxd4 28.
Nxd7 Rxd7 29. g3 Bd6 30. Nc6 Ba3 31. Ne5 Rd5 32. Nc4 $11 {/+/= is slightly
more pleasant for White, but a draw still seems the most likely result.}) 27.
bxa4 Bd6 $2 {Gets into trouble.} (27... Re2 $1 28. Nc6 (28. Kf1 Rd2 $44) 28...
a6 29. a5 Bd6 30. Kf1 Rc2 31. Nb8 Rd2 32. Nxa6 Rxd4 33. Nb8 Ra4 34. Nc6 Rc4 $11
) 28. Nc6 f5 (28... Re2 29. Nxa7 Rc2 30. g3 Rc4 31. a5 Rxd4 32. a4 $16) 29. Kf1
$14 {[%mdl 4096] /+/- White has prevented Re2 and although his extra P is
doubled, he has realistic winning chances. However, the endgame will bring
some adventurous turns yet.} Kf7 30. Rb1 $6 (30. Re1 $142 $1 {deserves serious
attention:} Rxe1+ 31. Kxe1 a6 32. Nb8 (32. d5 Bxh2 33. g3 f4 34. g4 f3 35. Nb4
Ke7 $132) (32. a5 Ke6) (32. a5 $5 Ke6 33. Nb8 c5 34. Nxa6 cxd4 35. Kd2 Kd5 36.
Kd3 Kc6 37. Kxd4 Kb5 38. Kd5 Bxh2 39. Nc5 Kxa5 40. Ke6 Kb5 41. Nd3 $16) 32...
Ke6 (32... a5 33. Nc6 Ke6 34. Ke2 Kd5 35. Nxa5 Kxd4 36. Nb7 Bxh2 37. a5 Kd5 38.
Nd8 Kc5 (38... c5 39. g3 $18) 39. Nf7 $16) 33. Nxa6 Kd5 34. a5 Kxd4 35. Nb8 Kc5
36. a4 $16) 30... a6 31. a5 Re4 32. Rb8 (32. Re1 Ke6 $132) 32... Ke6 33. Ra8
Kd5 34. Rxa6 g4 {White has won another pawn, but his pieces are in a tangle
and converting the advantage is almost impossible.} (34... f4 35. h3 h5 $44 {
is similar}) 35. g3 h5 36. a3 f4 (36... Bxa3 37. Na7 Bb2 $1 38. Rc6 (38. Nb5 c6
39. Nc7+ Kd6 40. Nb5+ Kd5 $11) (38. Rh6 Bxd4 39. Nb5 Be5 40. Rxh5 Rb4 41. Na7
Ke4 $44) 38... Rxd4 39. Rc2 (39. Rxc7 Ra4 $11) 39... Rd1+ 40. Ke2 Rb1 41. Rxc7
(41. a6 Bd4 42. Nc6 Bc5 43. Nd8 $1 $11) 41... Bd4 42. Rd7+ Kc5 43. Rf7 Rb2+ 44.
Kd3 Rb3+ $11) 37. gxf4 Rxf4 38. Nb4+ Kc4 ({A simpler way is} 38... Kxd4 $142 {
, when} 39. Rc6 h4 40. a6 Rf8 {seems drawish.}) 39. Ra8 (39. Rc6+ Kxd4 (39...
Kb5 40. a6 Rf8 (40... Bxb4 41. a7 Rf8 42. Rf6 Ra8 43. Rf5+ Kc4 44. axb4 $14)
41. Rc2 $14) 40. a6 Rf8 41. Kg2 h4 $132 {/\} 42. h3 gxh3+ 43. Kxh3 Rxf2 44.
Rxd6+ cxd6 45. a7 Rf8 46. Na6 $8 {=} (46. Nc6+ $2 Kd5 47. Nb8 Rf3+ $19)) 39...
Rf3 (39... Bxb4 40. axb4 Kxb4 41. a6 Kb5 42. a7 Kb6 43. Rc8 Kxa7 44. Rxc7+ Kb6
45. Rh7 Rf5 $11 (45... Rxd4 46. Rxh5 Kc6 {is also a theoretical draw})) (39...
Rxd4 40. a6 Rd1+ 41. Ke2 Ra1 $132 42. Nc2 Ra2 43. a7 Rxc2+ 44. Kd1 Ra2 45. Re8
Ra1+ 46. Ke2 Ra2+ 47. Kf1 Ra1+ $11 48. Kg2 $4 h4 $1 $19) 40. Nc2 Kb5 (40... Rc3
$1 41. Ne3+ (41. a6 Rxc2 42. a7 Rc1+ 43. Ke2 Rc2+ 44. Kd1 Ra2 $11 {is similar
to the line from the previous note.}) 41... Kxd4 42. Rh8 Rc5 43. a6 Ra5 44. a7
Rxa7 45. Rxh5 Bxa3 ({or} 45... Bf4 {is tenable for Black.})) 41. a6 (41. a4+
Kxa4 42. Rh8 Kxa5 43. Rxh5+ Ka4 44. Ne3 $14) 41... Rc3 42. a4+ Ka5 43. Ne3 Bxh2
44. Ke2 Bd6 45. Kd2 Rc6 46. Kd3 (46. a7 Ka6 (46... Ra6 47. Nc4+ Kxa4 48. Ne5 h4
$5 49. Nxg4 Ka5 50. Ne5 Kb6 51. Nc4+ Kb7 52. Rh8 Be7 $14) 47. Rh8 Kxa7 48. Rxh5
g3 49. fxg3 Bxg3 $14) 46... Kxa4 47. d5 ({The engine prefers} 47. a7 $5 {
, but after} Ra6 48. Ke4 Bh2 $14 {there is still no decision in sight.}) 47...
Rb6 (47... Rc5 $1 48. Rb8 (48. Rh8 Ra5 49. Rxh5 Rxa6 50. Nxg4 (50. Rh1 Ra5 $5
51. Ra1+ Kb4 52. Rxa5 Kxa5 53. Nxg4 c6 54. dxc6 Kb6 $11 {TB}) 50... Kb5) 48...
Ra5 49. Nd1 Be5 $1 {[]} 50. Ke4 Ba1 51. Rb7 (51. Rb1 Bf6) 51... Rxa6 52. Rxc7
Kb5 53. Ne3 Bf6 $11) 48. Nc4 Rb5 $2 {Only this move is an unequivocal error.} (
{Despite some difficulties,} 48... Rb3+ 49. Ke2 (49. Kd4 Rb4 50. a7 Rb7 $1 $11)
49... Bc5 $1 {still seems to hold:} 50. Rc8 Rf3 51. Rxc7 Kb5 52. d6 (52. Ne3
Rf6 53. a7 Ra6) 52... Rxf2+ 53. Kd3 Rf3+ $5 (53... Bxd6 54. a7 (54. Nxd6+ Kxa6
$11) 54... Rf3+ 55. Ke2 Bxc7 56. a8=Q Kxc4 57. Qc6+ Kd4 58. Qxc7 Ke4 59. Qh7+
Kf4 60. Qxh5 Kg3 $11 {TB}) 54. Ke4 Rf8 55. d7 g3 56. Rc8 g2 $11) 49. Rc8 $18
Bc5 50. d6 $1 Bxf2 (50... cxd6 51. Rxc5 $1 dxc5 52. a7 $18) 51. dxc7 g3 52. Rg8
Rc5 53. a7 {White promotes at least one new Q, while Black gets none.} 1-0

[Event "POL-ch"]
[Site "Warsaw"]
[Date "2018.05.13"]
[Round "2"]
[White "Krasenkow, Michal"]
[Black "Gajewski, Grzegorz"]
[Result "1-0"]
[ECO "E51"]
[WhiteElo "2628"]
[BlackElo "2599"]
[Annotator "Szabo,Kr"]
[PlyCount "113"]
[EventDate "2018.05.12"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "POL"]
[EventCategory "16"]
[SourceTitle "CBM 185"]
[Source "ChessBase"]
[SourceDate "2018.07.13"]
[SourceVersion "1"]
[SourceVersionDate "2018.07.13"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Bb4 5. e3 (5. Bg5) ({and} 5. cxd5 {are the
most popular lines.}) 5... O-O 6. Bd2 (6. Bd3 {is the most common move.}) 6...
Nbd7 ({Recently So played} 6... c5 7. a3 cxd4 8. axb4 dxc3 9. Bxc3 dxc4 10.
Bxc4 Qxd1+ 11. Kxd1 Bd7 12. Ke2 $14 {Karjakin-So Wesley, Berlin 2018; and
White has a comfortable position with the B-pair; later he managed to win.}) 7.
Qc2 c5 (7... b6 8. Be2 Bb7 9. O-O Be7 10. Rfd1 c5 11. Be1 Rc8 12. cxd5 exd5 13.
Qf5 a6 14. Ne5 g6 $13 {Vakhidov-Laznicka, Baku 2016}) 8. dxc5 Nxc5 (8... Bxc5
$5 {was the alternative,} 9. cxd5 exd5 10. Bd3 b6 {with a balanced middlegame.}
) 9. cxd5 Nxd5 ({In the event of} 9... exd5 10. a3 Bxc3 11. Bxc3 Nfe4 12. b4
Nxc3 13. Qxc3 Ne4 14. Qb2 $14 {similar to the text move, White is more
comfortable.}) 10. Nxd5 Bxd2+ 11. Qxd2 exd5 12. Be2 {Strategically White is
slightly better, because his N has a wonderful square on d4 and he has the
good B.} Ne4 13. Qb4 Bg4 14. O-O Bxf3 $6 {Black doesn't want to allow Nd4,
however this is an inaccuracy. Probably Black should wait for h3 and only then
take on f3.} (14... Rc8 {is more natural, but} 15. Rac1 $14 {and White has a
slight edge.} (15. Qxb7 $6 Bxf3 16. Bxf3 Nd2 {gives some counterplay for Black.
})) 15. Bxf3 Ng5 16. Be2 Qf6 17. Qxb7 {White captures the P, because
simplifying the position favours the B against the N.} Rab8 18. Qxa7 ({The
engine suggests} 18. Qxd5 Rxb2 19. Qc4 $14 {, but I like the game, because
White will have a passed a- P.}) 18... Rxb2 19. Qa6 $1 {The precise reply!
White is happy to exchange the Qs.} ({The careless} 19. Bd3 $6 {could have
been met by} Rxf2 $1 $132 {and the a1-R is hanging.}) 19... Ne4 $6 ({Black
should keeps the Qs with} 19... Rb6 {, however} 20. Qd3 $14 {and only White
can play for a win.}) 20. Qxf6 gxf6 (20... Nxf6 {is also not better, as} 21.
Bf3 $16 {and White is clearly better.}) 21. Bf3 (21. Bd3 $16 {was also fine
for White.}) 21... Nd2 (21... Ra8 {was slightly tougher,} 22. a4 Ra5 $14 {
and blocks the P on the 5th rank.}) 22. Rfd1 Nxf3+ 23. gxf3 {Usually the R
endgames give the best chance to survive. However White immediately has a
Tarrasch R on a1, so he can push the a-P without any difficulties.} Rc8 {
Black doesn't want to block the a-P, instead he tries to create counterplay.}
24. a4 Rcc2 25. Rdb1 $1 {A great reply! White doesn't play the passive 25.Rf1.
Instead he sacrifices the f2-P, but exchanges one pair of Rs and avoids every
counterchance on the 2nd rank.} Rxb1+ ({In the event of} 25... Rxf2 26. Rxb2
Rxb2 27. a5 Rb7 28. a6 Ra7 29. Kf2 Kf8 30. e4 $1 dxe4 31. fxe4 Ke7 32. Ke3 Kd6
33. Kf4 $1 Ke6 34. Ra5 $18 {and White is winning.}) 26. Rxb1 Ra2 27. Rb4 Kg7
28. Rg4+ Kh6 29. Kg2 f5 30. Rb4 Kg6 31. Kg3 {White activates his K as much as
possible.} Kf6 32. Rb6+ Kg7 33. Ra6 f4+ {Black tries to create some
counterplay, but his position is already bad.} 34. Kxf4 Rxf2 35. h4 Rh2 36. Kg3
Re2 37. Rd6 Rxe3 38. Rxd5 Ra3 39. a5 $18 {The white R is active on d5 and he
can puthis Ps in protected places . Then he can just go with his K. Black has
no counterplay at all.} Kg6 40. h5+ Kg7 41. Kf4 Kf6 42. Ke4 ({The engine
suggests} 42. Kg4 $1 $18 {, but the text move is more natural.}) 42... Ra4+ 43.
Kd3 Ke6 44. Rb5 Rf4 45. Rb6+ Kd5 46. Ke3 Ra4 47. a6 f5 48. Kd3 Ra3+ 49. Kc2 Ke5
(49... Rxf3 $2 {is losing immediately, as} 50. Rb5+ $1 Kc6 51. Ra5 $18 {
and Black can't stop the a-P.}) 50. Kb2 Ra5 51. Kb3 Kf4 $6 ({Still} 51... Kd5 {
gave some drawing chances,} 52. Kb4 (52. h6 $5) 52... Ra1 53. Rh6 Rb1+ 54. Kc3
Ra1 {and it is not clear how can White improve his position.}) 52. Kb4 Ra1 53.
Kb5 Kg5 (53... Kxf3 54. Rh6 $18 ({, but not} 54. Kc6 $2 f4 55. Kb7 Kg3 56. a7
f3 57. Rf6 Rb1+ $11 {and draw.})) 54. h6 Ra3 55. Rc6 Rb3+ 56. Ka4 Rb1 57. Ka5 {
Good technique by Krasenkow!} 1-0

[Event "Candidates Tournament"]
[Site "Berlin"]
[Date "2018.03.18"]
[Round "7"]
[White "Karjakin, Sergey"]
[Black "So, Wesley"]
[Result "1-0"]
[ECO "E51"]
[WhiteElo "2763"]
[BlackElo "2799"]
[Annotator "Yermolinsky,A"]
[PlyCount "80"]
[EventDate "2018.03.10"]
[EventType "tourn"]
[EventRounds "14"]
[EventCountry "GER"]
[EventCategory "22"]
[SourceTitle "CBM 184"]
[Source "ChessBase"]
[SourceDate "2018.05.16"]
[SourceVersion "1"]
[SourceVersionDate "2018.05.16"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Nf3 d5 6. Bd2 c5 $6 {With this move
Black accepts a slightly worse position.} ({Most prefer} 6... b6) 7. a3 cxd4 8.
axb4 dxc3 9. Bxc3 dxc4 10. Bxc4 Qxd1+ 11. Kxd1 Bd7 12. Ke2 Rc8 13. Bd3 Nd5 14.
Ne5 Be8 15. Bd2 f6 16. Nc4 Rd8 17. Rhc1 Nc6 18. Be4 Ndxb4 19. Bxb4 Nxb4 20.
Bxb7 Rab8 21. Rxa7 Rd7 22. Na5 Nd3 23. Rd1 Nxb2 24. Rxd7 Bxd7 25. Bc6 Bxc6 26.
Nxc6 {It may seem that having regained his pawn Black is out of danger, but
the remote position of his knight and a 7th rank weakness still pose problems.}
Re8 ({Staying active with} 26... Rb6 27. Nd4 Nc4 28. f4 h5 {appears to be a
better choice.}) 27. e4 Nc4 28. Kd3 Nd6 29. f4 Kf8 $6 (29... h5 $5) 30. e5 fxe5
31. fxe5 Nf5 32. g4 Nh4 ({This position is already quite dangerous for Black,
and it can only be held by precise play:} 32... Rc8 $1 {was a good start.}) 33.
Kc4 $1 Nf3 34. Ra2 Rc8 35. Kb5 Ke8 $2 {The decisive error.} (35... Rc7 36. Kb6
Rd7 37. Rf2 Rd3 {This is what Wesley missed.} (37... Rf7 38. Nd8 {is, indeed,
lost for Black.})) 36. Kb6 g5 37. h3 {Quite a situation: Black cannot save his
rook without stepping back with the king to the f-file, which will cost him
the knight.} Nxe5 38. Nxe5 Rc3 39. Rh2 Ke7 40. Kb5 Re3 1-0