[Event "EU-ch 16th"]
[Site "Jerusalem"]
[Date "2015.03.02"]
[Round "6"]
[White "Bukavshin, Ivan"]
[Black "Vallejo Pons, Francisco"]
[Result "1-0"]
[ECO "E43"]
[WhiteElo "2622"]
[BlackElo "2706"]
[Annotator "Marin,M"]
[PlyCount "65"]
[EventDate "2015.02.24"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "ISR"]
[SourceTitle "CBM 166"]
[Source "ChessBase"]
[SourceDate "2015.05.11"]
[SourceVersion "1"]
[SourceVersionDate "2015.05.11"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Nf3 ({The line played in the game is a more
restrictive (for White) version of:} 4. e3 b6 5. Bd3 Bb7 6. Nf3 Ne4 {when
White can ignore the threat on c3 with} 7. O-O {Accepting the pawn sacrirfice
is dangerous:} Nxc3 ({The forced line} 7... Bxc3 8. bxc3 Nxc3 9. Qc2 Bxf3 10.
gxf3 Qg5+ 11. Kh1 Qh5 12. Rg1 Qxf3+ 13. Rg2 f5 {fails to offer Black a draw by
perpetual. White can play on with two pawns down as in the following classical
game:} 14. Ba3 Ne4 15. Rf1 Rg8 16. Be2 Qh3 17. f3 Nf6 18. d5 $40 {[%csl Ga3,
Rb8,Ge2,Re8] 1-0 (25) Keres,P-Spassky,B Riga 1965}) 8. bxc3 Bxc3 9. Rb1 {
The latest game with this line went:} c5 10. Rb3 (10. dxc5 Na6 $11 {[%cal
Gc3f6,Ga6c5]}) 10... Ba5 11. e4 (11. dxc5 Na6) 11... d6 12. d5 e5 {Black has
consolidated but his bishop is out of play on a5. White needs to clear the
path for the f-pawn and the third rank for the rook. He would not be
interested in playing Nd2 or Ne1 allowing the exchange of the passive bishop.}
13. Ng5 $6 {But this is not the right way. The knight does nto stand well on
h3.} (13. Bc2 $5 Nd7 14. h3 Qe7 15. Nh2 $44 {[%cal Gh2g4,Gg4e3,Yb3g3,Ge3f5]})
13... h6 14. Nh3 Nd7 15. f4 Qe7 ({Only not} 15... exf4 $2 16. Nxf4 Ne5 17. Nh5
O-O 18. Bb1 $18 {[%cal Gb3g3]}) 16. f5 O-O-O 17. Bc2 Kb8 18. Rg3 Rdg8 19. Ba4
Nf6 20. Qe2 Bc8 21. Qf3 Ba6 22. Qd3 Bc8 23. Qf3 Ba6 24. Qd3 Bc8 25. Qf3 {
1/2-1/2 (25) Xiu,D (2571)-Zhao,J (2608) Xinghua 2014}) 4... b6 5. e3 Ne4 6. Qc2
{White needs to spend a tempo on this slightly committal move.} Bb7 7. Bd3
Bxc3+ 8. bxc3 f5 9. O-O O-O 10. a4 {A relatively rare continuation, which had
offered Bukavshin an advantage in a previous game. The critical continuations
are the knight retreats to d2 or e1, preparing to dislocate the enemy knight
with f2-f3 and occupy the centre with e3-e4.} (10. Ne1 c5 11. f3 Nd6 12. Ba3
Na6 {White is active and he has forced the knight on to an unfavourable square,
but his bishop does not stand well on a3 either. It may well turn into White's
worst piece, as so many times in the Nimzo-Indian.} 13. e4 (13. Qe2 Qe7 14. e4
fxe4 15. fxe4 Rxf1+ 16. Kxf1 e5 17. d5 Nc7 18. Nf3 (18. Kg1 {does not change
much essentially, but Black's plan was probably less accurate than in the main
line.} Rf8 19. Nf3 Nf7 20. Bc1 d6 21. Rb1 Bc8 22. Qc2 Bd7 23. Be3 Nh8 24. a4
Ng6 25. a5 bxa5 26. Rb7 Bg4 27. Nd2 Ra8 28. Qa4 {White has some initiative,
but the World Champion defends very originally.} Bc8 29. Rb1 Qd8 30. Qxa5 Ne6
$1 {Improving the placement of the passive knight.} 31. Qxd8+ Nxd8 32. Ra1 a5
33. g3 h6 34. Kf2 Nf8 35. Nb1 Nd7 36. Na3 Nf6 37. Ke1 Nf7 {0-1 (61) Graf,A 
(2580)-Kasparov,G (2785) Geneve 1996. Black has regrouped harmoniously and his
a-pawn is likely to cause problems after simplifying.}) 18... Ba6 19. Kg1 Rf8
20. Rf1 h6 {Black does not hurry to play ...d7-d6, since the knight helps him
to keep the pressure on c4.} 21. Bc1 Nce8 22. Be3 Nf6 23. Nd2 Qe8 24. a4 Nb7
25. Nb3 d6 26. Ra1 Na5 {Just in time to prevent a4-a5.} 27. Nd2 (27. Nxa5 bxa5
{is at least not worse for Black.}) 27... Bc8 28. Bc2 Bg4 29. Qe1 Qh5 $15 {
1/2-1/2 (55) Demuth,A (2475)-Amin,B (2635) Nice 2014}) 13... fxe4 ({The
hyper-modern} 13... Qe7 {eventually turned out well for Black in an older game
played at the Candidates.} 14. e5 Nf7 15. f4 g5 16. d5 $6 gxf4 17. Nf3 Nh8 18.
Rae1 Ng6 19. Bc1 Kh8 20. Qf2 Qg7 $132 {0-1 (40) Jussupow,A (2645)-Timman,J 
(2645) Tilburg 1986}) 14. fxe4 Rxf1+ 15. Kxf1 Qf8+ $5 (15... e5 {is also quite
OK.} 16. d5 Nc7 17. Nf3 Qe7 {0-1 (41) Hoffman,A (2452)-Franco Alonso,A (2487)
San Sebastian 2013}) 16. Nf3 (16. Kg1 Qf4) 16... cxd4 {Here we see why Black
did not play ...Qf8 instead of ...Qf6: e4-e5 does not fork his pieces.} 17. e5
(17. cxd4 $2 Nxc4 $3 $17 {[%cal Gc4e3,Gf8a3]}) 17... Nxc4 18. Bxh7+ Kh8 19.
Bxf8 Ne3+ 20. Kf2 Nxc2 21. Bxc2 Rxf8 22. cxd4 Nb4 $11) (10. Nd2 Qh4 11. f3 (11.
f4 Nxd2 12. Bxd2 Qg4 13. Rf2 Qg6 14. Raf1 d6 15. Re2 Be4 16. Bxe4 fxe4 17. g4
Nc6 18. Rg2 Na5 19. f5 exf5 20. gxf5 Qf7 21. Qxe4 Nxc4 22. Qd3 d5 {1/2-1/2 (53)
Darga,K-Portisch,L Oberhausen 1961}) (11. g3 Ng5 $1 {[%csl Rg1][%cal Gg5h3]}
12. d5 {0-1 (28) Malcanek,O-Teschner,R Reggio Emilia 1965} Nh3+ 13. Kg2 Qh5
$132) 11... Nxd2 12. Bxd2 d6 13. Be1 (13. e4 fxe4 14. fxe4 Nd7 {is quite OK
for Black.}) (13. Rae1 Nd7 14. e4 f4 {[%cal Ge6e5,Gf8f6,Gf6h6,Gg7g5]} 15. e5
dxe5 16. Be4 Bxe4 17. Rxe4 Rae8 $13 {0-1 (77) Bartholomew,J (2440)-L'Ami,E 
(2611) Reykjavik 2012}) ({Black is well prepared for the thematic} 13. c5 dxc5
14. Qb3 Qe7 15. Rae1 Nc6 16. e4 f4 17. Bc1 Na5 18. Qa4 Bc6 19. Qa3 Qd7 $17 {
0-1 (65) Kazakov,M (2479)-Dann,M (2448) Lvov 2014}) 13... Qg5 14. Kh1 Nd7 15.
e4 fxe4 (15... Rae8 $2 16. exf5 exf5 17. Bd2 Qg6 18. Qa4 $16 {1-0 (27)
Vocaturo,D (2536)-Beltran Rueda,S (2420) Sitges 2013}) 16. Bxe4 (16. fxe4 Rxf1+
17. Bxf1 Qf4 18. Bd3 Bxe4) 16... Bxe4 17. Qxe4 Rfe8 $5 18. Qb7 Qd8 $11) 10...
Nc6 11. Ba3 Rf6 $1 {The most typical continuation for this variation. Black
goes straight for a mating attack..} (11... Re8 $6 12. Rfb1 Ng5 13. Nd2 Qf6 14.
f4 Nf7 15. e4 $36 {1/2-1/2 (24) Bukavshin,I (2553)-Alekseev,E (2707) St
Petersburg 2013}) (11... Ne7 $6 12. Ne1 d6 13. f3 Ng5 14. c5 $36 {1-0 (31)
Efimov,I (2450)-Ikonnikov,V (2540) Catania 1995}) 12. Rfb1 $146 {White's
concentration of pieces on the queenside is not too effective.} ({But action
in the centre is not too impressive either, which speaks against White?s whole
plan.} 12. d5 Na5 13. Bxe4 fxe4 14. Qxe4 c5 $44 {[%csl Ra3,Rc4]} 15. Rfd1 (15.
Qd3 Rxf3 16. gxf3 Qg5+ 17. Kh1 exd5 18. cxd5 Bxd5 19. e4 Bc4 20. Qxd7 Rd8 21.
Qh3 Bxf1 22. Rxf1 Qf6 $36) (15. dxc6 Bxc6 $19 {[%csl Rf3]} 16. Qg4 Bxf3 17.
gxf3 Rg6) 15... Qe8 16. Qd3 (16. Bb4 $5 cxb4 17. cxb4 Nxc4 18. Qxc4 Bxd5 19.
Rxd5 exd5 20. Qxd5+ Kh8 21. h3 $44) 16... Qh5 17. Nd2 (17. e4 Raf8 {[%csl Gc4,
Gf2][%cal Gb7a6]}) 17... exd5 18. cxd5 Qxd5 $15 {[%csl Ra3,Ra4,Rc3] 1/2-1/2 
(58) Kogan,B-Gershman,S Kiev 1964}) (12. Bxe4 fxe4 13. Qxe4 Na5 {forces} 14. d5
{with a transposition above.} (14. Qd3 $2 Rxf3 15. gxf3 Qg5+ 16. Kh1 Bxf3#))
12... Rb8 $5 {Defending the bishop in order to neutralise the threat Bxe4 for
good.} 13. Bb4 {Still without a clear plan since a4-a5 is not really
threatening.} (13. Bxe4 fxe4 14. Qxe4 Nb4 15. d5 exd5 16. cxd5 Nxd5 17. Qc4
Rxf3 18. gxf3 Qf6 $44) 13... Rg6 14. Bf1 Rh6 {[%cal Gg7g4] After inducing
White to release the pressure on e4, Black switches to the most aggressive
plan.} 15. Rd1 g5 $1 $40 {Suddenly White is in big trouble.} 16. Nd2 g4 17. g3
{One brief look at the position is enough to understand that Black is close to
winning. But Vallejo completely loses the thread.} Nxb4 $2 {At this high point
in the game, this should be the last move to consider. Exchanging the bad
bishop is necessary only of if it wins at once.} ({Obviously, this was not
Paco's best day. Under normal circumstances, it would have been virtually
impossible to miss the simple winning attack starting with} 17... Nxf2 $1 18.
Kxf2 Rxh2+ 19. Kg1 {Black even has a big choice now:} (19. Ke1 Qg5 $19) {
When calculating the sacrifice, Black could use the safety network created by}
19... Rh1+ $1 {which incidentally is the strongest continuation.} (19... Qg5 $5
20. Kxh2 (20. Nf3 Rxc2 21. Nxg5 h6 22. Nxe6 dxe6 $17) 20... Qh6+ 21. Kg1 Qxe3+
22. Kh2 Nxb4 23. cxb4 Qf2+) (19... Qe8 $6 20. Kxh2 Qh5+ 21. Kg1 Nxb4 22. cxb4
Qh1+ 23. Kf2 Qh2+ 24. Ke1 Bf3 $1 {[%csl Re1][%cal Gh2g3]} 25. Nxf3 $8 Qxc2 26.
Nd2 {is slightly less convincing.}) 20. Kf2 {Once he reaches this position he
could calmly decide whether to give another check on h2 or play the winning}
Qf6 {[%cal Gh1h2,Gf6h6]}) ({If Black was tempted by the plan involving ...Qg5,
he should have played it at once?} 17... Qg5 18. Nxe4 ({The difference is that
} 18. d5 $2 {is impossible to} Ne5 $18) 18... Qh5 19. h4 gxh3 20. Qe2 (20. Kh2
Nxb4 21. cxb4 Bxe4 22. Bd3 Qf3 23. Bxe4 fxe4 24. Rg1 Rf8 $17) (20. Nd2 Nxb4 21.
cxb4 h2#) 20... h2+ 21. Kh1 fxe4 22. Qxh5 Rxh5 $15 {True, this is far from
what the position promised on move 17.}) 18. cxb4 Qg5 ({Once he had said "A",
he should have said "B", too, by clearing the bishop's diagonal completely?} 
18... Nxd2 19. Rxd2 Be4 $15) 19. d5 $1 {[%csl Rb7] Suddenly things are not
that clear anymore.} Nxd2 $6 {Since it does not help the bishop in any way,
this exchange is a concession.} (19... Qh5 20. h4 gxh3 21. Nxe4 fxe4 22. dxe6 (
22. Qxe4 exd5 23. cxd5 Re8) 22... d6 23. a5 Qf3 24. Kh2 Bc8 $5 25. axb6 axb6
26. Rd4 (26. e7 Bg4 $19) (26. Ra7 Bxe6 27. Rxc7 Bg4 28. Re1 Qg2+ $3 29. Bxg2
hxg2+ 30. Kxg2 Bf3+ 31. Kg1 Rh1#) 26... Bxe6 27. Ra2 Bf5 28. c5 $132) 20. Rxd2
Qh5 21. h4 gxh3 22. Kh2 d6 23. a5 $14 {Black has no attack and is poorly
coordinated, while White?s positional attack on the queenside is quite
effective.} Qf3 (23... e5 24. axb6 axb6 25. c5 f4 26. exf4 exf4 27. cxd6 cxd6
28. Qc7 fxg3+ 29. fxg3 Qe8 30. Ra7 Qc8 31. Qxb6 $36 Bxd5 $2 32. Qd4 Bf7 33.
Rxf7 Kxf7 34. Rf2+ Kg8 35. Bc4+ $18) 24. axb6 axb6 25. Ra7 Rg6 26. Qd1 (26. Rd4
$14 Rg4 27. Bxh3 Rxd4 28. exd4 {[%csl Gf5]}) 26... Qg4 (26... Qxd1 27. Rxd1 $14
) 27. Rd4 $6 ({Missing} 27. Qa4 $1 $18 {[%cal Ga7b7]} Kg7 28. Qd7+) 27... Qg5
$2 (27... Qxd1 28. Rxd1 $14) 28. Rh4 $16 Qf6 29. Bxh3 Qb2 30. Kg1 Ra8 $2 {
A mistake in a desperate position.} 31. Rxa8+ ({Only not} 31. Rxb7 Ra1) 31...
Bxa8 32. Qa4 $18 Qc1+ {The bitter check of revenge.} (32... Bb7 33. Qe8+ Kg7
34. Qe7+ {[%csl Rg7]}) 33. Bf1 1-0

[Event "Moscow Aeroflot op-A 14th"]
[Site "Moscow"]
[Date "2015.03.30"]
[Round "4"]
[White "Bukavshin, Ivan"]
[Black "Inarkiev, Ernesto"]
[Result "1-0"]
[ECO "D85"]
[WhiteElo "2618"]
[BlackElo "2706"]
[Annotator "CB"]
[PlyCount "83"]
[EventDate "2015.03.27"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "RUS"]
[SourceTitle "CBM 166"]
[Source "ChessBase"]
[SourceDate "2015.05.11"]
[SourceVersion "1"]
[SourceVersionDate "2015.05.11"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. cxd5 Nxd5 5. e4 Nxc3 6. bxc3 Bg7 7. Nf3 c5 8.
Be3 Nc6 9. Rc1 cxd4 10. cxd4 e6 {This move looks a little strange. It doesn't
really hinder d5 and it costs Black an important tempo.} 11. Bc4 O-O 12. O-O
Na5 13. Bd3 b6 14. h4 {even though the rook is no longer on the h-file, it is
natural to weaken the Black king position.} Bb7 15. h5 f5 {This move is as
ugly as it gets, it's definitely very weakening. Black wants his light squares,
but life is not so easy.} 16. e5 gxh5 17. Ng5 Qd5 $2 {Missing White's
brilliant reply.} (17... Qe8 18. Rc7 {with an initiative.}) 18. Be4 Qd7 (18...
fxe4 19. Qxh5 h6 (19... Rfc8 20. Qxh7+ Kf8 21. Qg6 Kg8 {And White has a choice
of brilliant wins to choose from.} 22. Qf7+ Kh8 23. Rxc8+ Rxc8 24. Kh2 {
with Rh1 and Kg3 to follow, just to name one.}) 20. Rc7 {with the unstoppable
idea of Qg6 and forced mate.}) 19. Bxb7 Nxb7 20. Qxh5 Bh8 21. f4 Rae8 22. Rf3
Re7 {Positionally Black is simply busted.} 23. Rg3 Rg7 24. Bf2 Qe8 25. Qh3 Nd8
26. Nxh7 Rxg3 27. Bxg3 Rf7 28. Ng5 Rd7 29. Rc8 $18 Bg7 30. Bf2 Qg6 31. Qb3 Bf8
32. Qa4 Qg7 33. Rc3 Rc7 34. Rg3 Rc1+ 35. Kh2 Qh6+ 36. Rh3 Qg7 37. Qe8 Qe7 38.
Qh5 Bg7 39. Qg6 Kf8 40. Nh7+ Kg8 41. Nf6+ Kf8 42. Rh8+ 1-0

[Event "Moscow Aeroflot op-A 14th"]
[Site "Moscow"]
[Date "2015.04.01"]
[Round "6"]
[White "Bukavshin, Ivan"]
[Black "Rapport, Richard"]
[Result "1-0"]
[ECO "D07"]
[WhiteElo "2618"]
[BlackElo "2709"]
[PlyCount "79"]
[EventDate "2015.03.27"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "RUS"]
[SourceTitle "CBM 166"]
[Source "ChessBase"]
[SourceDate "2015.05.11"]
[SourceVersion "1"]
[SourceVersionDate "2015.05.11"]
[SourceQuality "1"]

1. d4 d5 2. c4 Nc6 3. cxd5 Qxd5 4. e3 e5 5. Nc3 Bb4 6. a3 Bxc3+ 7. bxc3 Nf6 8.
c4 Qd6 9. d5 Ne7 10. a4 c5 11. Bb2 O-O 12. Nf3 Ng6 13. Nd2 e4 14. Bxf6 Qxf6 15.
Nxe4 Qe5 16. Nd2 Bg4 17. Be2 Bxe2 18. Kxe2 Rae8 19. Kf1 f5 20. g3 f4 21. exf4
Nxf4 22. gxf4 Qxf4 23. f3 Re3 24. Rg1 Qxh2 25. Rg2 Qh4 26. Rb1 Qd4 27. Rxb7
Rfxf3+ 28. Qxf3 Qa1+ 29. Rb1 Rxf3+ 30. Ke2 Qc3 31. Nxf3 Qxc4+ 32. Ke3 Qxd5 33.
Rb8+ Kf7 34. Ng5+ Ke7 35. Ne4 Qd4+ 36. Kf4 Ke6 37. Rg5 h6 38. Rg6+ Kf7 39. Rd6
Qxa4 40. Kf5 1-0

[Event "RUS-ch 68th"]
[Site "Chita"]
[Date "2015.08.13"]
[Round "5"]
[White "Bukavshin, Ivan"]
[Black "Khairullin, Ildar"]
[Result "1-0"]
[ECO "E18"]
[WhiteElo "2655"]
[BlackElo "2662"]
[PlyCount "117"]
[EventDate "2015.08.09"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "RUS"]
[EventCategory "18"]
[SourceTitle "CBM 168"]
[Source "ChessBase"]
[SourceDate "2015.09.14"]
[SourceVersion "1"]
[SourceVersionDate "2015.09.14"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3 Bb7 5. Bg2 Be7 6. O-O O-O 7. Nc3 Ne4 8. Bd2
d5 9. cxd5 exd5 10. Bf4 Nd7 11. Rc1 c5 12. dxc5 Nxc3 13. Rxc3 bxc5 14. Ne1 Nb6
15. b3 Rc8 16. Rc2 Re8 17. Nd3 Ba6 18. Bh3 Ra8 19. Bg4 c4 20. Ne5 Bf8 21. Nf3
Bc8 22. Bxc8 Rxc8 23. Be3 Bc5 24. Bxc5 Rxc5 25. Qd4 Qc8 26. Rfc1 Rc6 27. Qd1
Rf6 28. Rd2 h6 29. Rd4 Qa6 30. Rc2 Qa3 31. Rcd2 Rc6 32. Kg2 Rce6 33. e3 Re4 34.
Qc2 Qa5 35. Rd1 Qb4 36. Rc1 Qa3 37. Rcd1 Qb4 38. h3 Qa5 39. Nh4 Qc5 40. Nf5
Rxd4 41. Rxd4 Qf8 42. a4 g6 43. a5 Nd7 44. Nh4 cxb3 45. Qxb3 Nf6 46. Rb4 Qd6
47. Rb7 Qa6 48. Rb5 Rc8 49. Nf3 Rc1 50. Nd4 Kg7 51. Qb2 Rd1 52. g4 Kh7 53. Qb3
Rd2 54. Nf3 Ra2 55. Rb7 Qe2 56. Nd2 Kg8 57. Qxa2 Ne4 58. Rxf7 Nxd2 59. Qxd5 1-0

[Event "RUS Cup final"]
[Site "Khanty-Mansiysk"]
[Date "2015.12.10"]
[Round "3.2"]
[White "Bukavshin, Ivan"]
[Black "Khismatullin, Denis Rimovich"]
[Result "1-0"]
[ECO "D37"]
[WhiteElo "2657"]
[BlackElo "2654"]
[PlyCount "69"]
[EventDate "2015.12.05"]
[EventType "k.o."]
[EventRounds "4"]
[EventCountry "RUS"]
[SourceTitle "CBM 170"]
[Source "ChessBase"]
[SourceDate "2016.01.15"]
[SourceVersion "1"]
[SourceVersionDate "2016.01.15"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Nbd7 5. Qc2 dxc4 6. e4 c5 7. dxc5 Bxc5 8.
Bxc4 Qc7 9. Qe2 a6 10. O-O Bd6 11. Bb3 O-O 12. Rd1 Ne5 13. Nd4 Bd7 14. Bf4 Rad8
15. Bg3 Qb8 16. Kh1 Neg4 17. h3 Bxg3 18. hxg4 Be5 19. g5 Qa7 20. gxf6 Bxd4 21.
e5 Bc6 22. fxg7 Kxg7 23. Qh5 f6 24. Bxe6 Kh8 25. Bf5 b5 26. e6 Rg8 27. Ne4 Qg7
28. g4 Bxf2 29. Rxd8 Rxd8 30. Rc1 Bb7 31. Bxh7 Be3 32. Rc3 Bh6 33. Bf5 Rd4 34.
Kh2 Qf8 35. e7 1-0

