[Event "Bad Woerishofen op 21st"]
[Site "Bad Woerishofen"]
[Date "2005.03.11"]
[Round "9"]
[White "Savchenko, Stanislav"]
[Black "Siebrecht, Sebastian"]
[Result "0-1"]
[ECO "A66"]
[WhiteElo "2505"]
[BlackElo "2408"]
[Annotator "Gutman,L"]
[PlyCount "72"]
[EventDate "2005.03.04"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 107"]
[Source "ChessBase"]
[SourceDate "2005.08.01"]
[SourceVersion "1"]
[SourceVersionDate "2005.08.01"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 c5 3. d5 e6 4. Nc3 exd5 5. cxd5 d6 6. e4 g6 7. f4 Qe7 8. Bd3 (
8. Nf3 Bg4 (8... Nxe4 $4 9. Qa4+) 9. h3 Bxf3 10. Qxf3 Bg7 11. Bd3 O-O 12. O-O
Nbd7 13. Bd2 {Panno - Aitken, Mьnchen 1958}) 8... a6 9. a4 Bg7 10. Nf3 O-O 11.
O-O Bg4 12. h3 Bxf3 13. Qxf3 Nbd7 14. Bd2 Rfc8 15. Rae1 ({Interessant ist} 15.
Be1 c4 16. Bc2 Rab8 (16... b5 17. axb5 axb5 18. Rxa8 Rxa8 19. Nxb5) 17. Bh4)
15... c4 16. Bc2 Rab8 (16... Ne8 $5) 17. a5 $6 (17. Be3 b5 18. axb5 axb5 19. e5
dxe5 20. Ba7 Ra8 21. Bd4 b4 22. fxe5) 17... Ne8 18. Kh1 $6 (18. Be3 b5 19. axb6
Nxb6 20. e5) 18... b5 19. axb6 Rxb6 20. Bc1 (20. Nd1 $5 Bxb2 21. Nxb2 Rxb2 22.
Qc3) 20... Rbb8 21. g4 Nc7 22. g5 Nb5 23. Nxb5 Rxb5 24. e5 $1 dxe5 25. f5 Qd6
26. h4 c3 27. b3 (27. bxc3 e4 28. Bxe4 Rxc3 29. Bf4 {war mцglich}) 27... Rb4
28. Re4 Rd4 29. Be3 Rxd5 30. h5 gxf5 31. Qxf5 Qe6 32. Qf3 $2 ({Der letzter
Fehler im Zeitnot.} 32. Qxe6 fxe6 33. h6 Bf8 34. g6 hxg6 35. Rg4 {und WeiЯ
steht mindestens nicht schlechter}) 32... Nc5 33. Bxc5 Rdxc5 34. Rg4 Rd8 35. h6
Bf8 36. Qe4 Qd5 0-1

[Event "Imre Konig Memorial 1st"]
[Site "San Francisco"]
[Date "2002.09.14"]
[Round "8"]
[White "Nakamura, Hikaru"]
[Black "De Firmian, Nick E"]
[Result "1-0"]
[ECO "A66"]
[WhiteElo "2494"]
[BlackElo "2551"]
[Annotator "Kapengut"]
[PlyCount "73"]
[EventDate "2002.09.04"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "USA"]
[EventCategory "12"]
[SourceTitle "CBM 092"]
[Source "ChessBase"]
[SourceDate "2003.02.06"]
[SourceVersion "1"]
[SourceVersionDate "2003.02.06"]
[SourceQuality "1"]

{[%mdl 8]} 1. d4 {Kortschnoj} Nf6 2. c4 e6 3. Nc3 c5 4. d5 exd5 5. cxd5 d6 6.
e4 g6 7. f4 Bg7 8. e5 {Mikenas's variation is one of the sharpest systems
against the Modern Benoni.White plays the thematic e5 break at the first
moment and manages to catch Black's king in the centre as a result. But this
does involve a pawn sacrifice and, moreover, White is obliged to launch his
attack with most of his pieses still on their original squares, so if
something goes wrong the backlash is usually disastrous.} Nfd7 9. Ne4 {
Kortschnoj: 'This maneouvre is not too dangerous for black. According to the
theory, white gets much behind in development. But perhaps this old assessment
after this game needs to be revised.'} dxe5 10. Nd6+ Ke7 {Kortschnoj: 'This
move looks more energetic than the "fearful" Kf8. Still, in the middlegame
energetic moves by the king are not recommended.'} 11. Nxc8+ Qxc8 12. Nf3 Re8 {
Kortschnoj: 'Black plays essential moves, but soon it becomes obvious that he
fails to equalize the game. It is time to look for improvements. I dare to
suggest 12...Qc7!?'} 13. fxe5 Kf8 $6 {Theory considers the main variation to
be a draw, so Black chooses an offshoot for playing to win, but this line
looks too dangerous.} ({A doubtful idea is:} 13... Bxe5 $6 14. Bc4 $1 (14. Bb5
{- see below}) 14... Kf8 15. O-O Bg7 (15... Kg7 16. Qd2 f6 17. Qh6+ Kh8 18. Bg5
$1 Qd8 19. Bd3 Bxb2 20. Rab1 Bc3 21. Rxb7 $16) 16. Ng5 (16. d6 $6 Nb6 $11)
16... Bd4+ (16... f5 $140 $2 17. Kh1 Nb6 18. d6 $1 Be5 19. Bf7 $18) 17. Kh1 Nf6
18. d6 $40) ({The basic position of the variation have been reached after:} 
13... Nxe5 $5 14. Bb5 Nbd7 (14... Qg4 $6 15. O-O $1 (15. Nxe5 Qb4+) (15. Bxe8
Qxg2 16. Rf1 Kxe8 {Hartston,W}) 15... Nxf3+ 16. Qxf3 Qxf3 17. Rxf3 Nd7 18. Bg5+
f6 19. Re1+ Kf7 20. Rxe8 Kxe8 21. Bxf6 $16 {Nunn,J}) 15. Nxe5 (15. O-O Kf8 $1 (
15... Nxf3+ $2 16. Qxf3 Ne5 17. Bg5+ Kf8 18. Qf2 $16) (15... c4 $6 16. Be3 Ng4
17. Ng5 $16 Nxe3 $140 18. Rxf7+ Kd8 19. Qa4 Nc5 20. Qa5+ b6 21. Qd2 c3 22. bxc3
Bh6 23. Ne6+ $18) (15... a6 $6 16. Nxe5 Bxe5 17. d6+ $1 Kf8 (17... Bxd6 $2 18.
Re1+ $18) 18. Qd5 Bd4+ 19. Kh1 Nf6 20. Bh6+ Kg8 21. Rxf6 $1 Bxf6 22. d7 axb5
23. dxc8=Q Raxc8 24. Qxb7 Bxb2 25. Rf1 {1-0 Littlewood,J-Povah,N/England 1975})
16. d6 (16. Nxe5 Rxe5 {see below}) 16... c4 17. Kh1 a6 18. Ba4 Nd3 19. Ng5 b5
20. Qf3 N7e5 21. Qd5 Ra7 22. Be3 Rd7 23. Bd1 {Verdier,P-Daillet,E/Corr AJEC/
1172 1987} Qc6 $19) {This was the rare case, when it was possible for me to
use two novelties in the same game!} 15... Kf8 $1 {This precise order of moves
is very important, because allows Black to avoid difficulties of the previous
line.} (15... Bxe5 $6 16. O-O c4 $1 (16... Qc7 17. Qg4 $1 f6 (17... Kd6 $6 18.
Rxf7 Bd4+ 19. Kh1 Ne5 20. Rf6+ Kxd5 21. Qe2 c4 {Shereshevsky,M-Kapengut,A/
Minsk 1974} (21... Rf8 $4 22. Bc4+ $18) (21... Re7 22. Bf4 $18) 22. Bf4 $18)
18. Bf4 Qd6 19. Rae1 Kd8 20. Qh4 (20. Bxe5 Nxe5 21. Qh4 Rf8 22. Qxh7 Rf7 23.
Qh8+ Rf8 24. Qh7 Rf7 {1/2-1/2 Baumbach,F-Espig,T/DDR-ch Frankfurt/Oder 1977})
20... h5 21. Rxe5 $5 Rxe5 $5 22. Qf2 Qxd5 23. Bxe5 Nxe5 24. Qxf6+ Kc7 25. Re1
$14) (16... Kf8 17. Qf3 f5 (17... f6 18. Qh3 Re7 19. d6 $5 Bxd6 20. Bh6+ Kg8
21. Rad1 c4 (21... Qc7 $5 22. Bxd7 $140 $6 Qxd7 23. Qxd7 Rxd7 24. Rxf6 $4 Bxh2+
$19) 22. Kh1 a6 23. Bxd7 Qxd7 24. Qc3 Rd8 25. Rxf6 Rf7 26. Qxc4 Qc7 27. Rdxd6
Rxd6 28. Rxd6 Qxd6 29. Qc8+ Rf8 30. Qxf8+ {1/2-1/2 Astolfi,F-Cesbron/Toulouse
Open 1989}) 18. g4 a6 (18... Bd4+ $6 19. Kh1 Ne5 20. Qg2 Rd8 21. gxf5 Kg7 22.
Bg5 $16 Rd6 23. Rae1 Rb6 24. Bf4 $1 {.} Nf7 (24... Rxb5 25. Rxe5 $1 Bxe5 26.
Bxe5+ Kg8 27. fxg6 h6 28. Rf7 $18 {Rajkovic,D}) 25. fxg6 Rxg6 26. Qf3 Qg4 27.
Qxg4 Rxg4 28. Re7 Bxb2 29. Be8 $18 {Rajkovic,D-Planinc,A/Majdanpek 21/108 1976}
) 19. Bc4 $1 (19. Bxd7 Qxd7 20. gxf5 Kg7 $11) (19. Ba4 b5 20. Bc2 f4 21. Bxf4
Kg8 22. Bh6 $6 (22. d6) 22... Bd4+ 23. Kh1 Ne5 $17 {Topolski,P-Jakovljevic/JUG
corr ;CR97-88 1988}) (19. gxf5 $5 axb5 20. fxg6+ Ke7 21. Bf4 $16) 19... b5 20.
gxf5 $1 bxc4 21. fxg6+ Nf6 22. Bg5 $18 {Nunn,J}) 17. d6+ (17. Bg5+ f6 18. d6+
Kf7 19. Qd5+ Kg7 20. Rae1 Rf8 21. Bxd7 Qxd7 22. Bf4 Rae8 23. Rxe5 $1 fxe5 24.
Bxe5+ Rxe5 25. Qxe5+ Kg8 26. Rxf8+ Kxf8 27. Qh8+ $18 {Sprott,G-Yianni,M/corr
1985}) 17... Kf8 18. Bh6+ $1 (18. Qd5 Qc5+ 19. Qxc5 Nxc5 20. Bxe8 Kxe8 21. Re1
Nd3 22. Bf4 Nxe1 23. Rxe1 f6 24. Bxe5 fxe5 25. Rxe5+ Kd7 26. Re7+ $11 {
Petrosian,A-Kapengut,A/Jaroslavl VDFSO-ch 1975}) 18... Kg8 19. Qd5 Qc5+ 20.
Qxc5 Nxc5 21. Bxe8 Rxe8 22. Rae1 $16) 16. O-O Rxe5 17. Bf4 (17. d6 c4 18. Bxd7
Qxd7 19. Qd4 Qe6 20. Bf4 Re4 21. Qd2 Re2 22. Qa5 Qe4 23. Rf3 b6 24. Qg5 h6 25.
Qg3 g5 $19 {Reis,L-Kovacevic,S/6th Young Masters, Loures POR 1998}) {Soon
after Boleslavsky and I were analyzing the game Shereshevski,M-Savon,V for
Informant and I had found [#]} 17... c4 $1 {, but according to my teacher's
advise didn't go public, and very soon I cought my opponents in two games. Now
it is impossible because of the Internet!} (17... Rf5 $6 18. Bd6+ Kg8 19. Rxf5
gxf5 20. Bxd7 Qxd7 21. Bxc5 Bxb2 22. Rb1 Be5 23. Qd2 f6 24. d6 Qc6 25. Rc1 Rd8
$11 {Kurtin-Lobron,E/Yugoslavia 1980}) (17... Re4 $6 18. Qf3 f5 {The right
direction had occurred in one of the early games in this line between my two
students:} 19. Rae1 $1 {~/= Inf 21/(110)} (19. Bh6 $6 Nf6 20. Bxg7+ Kxg7 21.
Rae1 c4 $5 (21... Qc7 22. Qc3 Qd6 23. Rxe4 fxe4 24. Bd7 Rf8 25. Be6 h6 26. Rc1
b6 $15 {Curtin-Anderson/Malta ol 1980}) 22. Rxe4 Nxe4 23. Qe3 Qd8 24. Qd4+ Qf6
$15 {Grahn,L-El Kher,H/Copenhagen DEN 2002}) (19. g4 Bd4+ 20. Kh1 Nf6 21. gxf5
Qxf5 22. Bg5 Qxf3+ 23. Rxf3 Kg7 24. Raf1 Rf8 25. d6 a6 26. Bd3 Re6 27. Bf4 b5
28. b3 Nd7 29. Bg3 Rxf3 30. Rxf3 Be5 $15 {Astolfi,F-Fernandez,An/Royan op 1989}
) 19... Bd4+ 20. Kh1 Nf6 21. Bg5 Rxe1 22. Rxe1 Ng4 23. h3 Ne5 24. Qg3 a6 25.
Rxe5 $16 {Kagan,N-Artishevsky,S/Minsk 1975}) (17... Rh5 $5 18. g4 (18. Qf3 Bd4+
19. Kh1 Nf6 $15) 18... Bd4+ 19. Kg2 Rxd5 20. Bc4 Nb6 21. Bxd5 Nxd5 22. Bh6+ Kg8
23. Qf3 Qd7 $44 {Konikowski}) (17... a6 $5 18. Bxd7 (18. Be2 Re8 19. d6 b5 20.
a4 c4 21. Bf3 Qc5+ 22. Kh1 Rad8 23. axb5 axb5 24. b4 Qd4 25. Qxd4 Bxd4 26. Bh6+
Kg8 27. Rad1 Be3 28. Bxe3 Rxe3 29. Bc6 Re6 $6 (29... Rb3 $5 $17) 30. Bxb5 {
1/2-1/2 Brondum-Nunn,J /Ostende 1975}) (18. Bxe5 Nxe5 $6 (18... Bxe5 19. Qf3
$140 $2 Bd4+ $1 20. Kh1 Ne5 $15 {Marjanovic,S}) 19. Be2 c4 20. Kh1 Qc5 21. Qd2
$1 Rd8 (21... Qd6 $5 {[%cal Ga8c8,Gb7b5,Gb5b4]}) 22. Rfd1 b5 23. a4 $1 b4 24.
Rac1 Qd6 $5 25. Qf4 (25. Bxc4 $2 Ng4 26. g3 Bh6) 25... Nd3 (25... Rc8 26. Bxc4
Nxc4 27. Rxc4 Qxf4 28. Rxf4 a5 29. b3 $1 $18) 26. Qxd6+ Rxd6 27. Bxd3 cxd3 28.
Rc8+ Ke7 29. Rc7+ Kd8 (29... Rd7 $2 30. Rxd7+ Kxd7 31. b3 $18) (29... Ke8) 30.
Rxf7 $18 {Sosonko,G-Jakobsen,O/Barcelona (zt) 1975/Inf 20}) 18... Qxd7 19. Bxe5
Bxe5 20. Qf3 $1 (20. Qb3 $6 $44 Kg7 (20... Rd8 21. Rad1 b5 22. Kh1 Bd4 23. Qa3
Qxd5 24. Qxa6 Ra8 25. Qxb5 Rxa2 26. h3 $14 {Curtin,E-Quinteros,M/Providence,
RI USA 1984}) 21. Rae1 f6 22. Kh1 b5 23. Qf3 Qd6 24. Re2 Rd8 25. Rd1 h5 26. Re4
c4 27. Qe2 Rc8 28. h3 Rc5 {1/2-1/2 Shereshevski,M-Savon,V/Minsk 1974/Inf 17})
20... Bxb2 (20... Kg7 21. d6 $1 $14) 21. Rae1 $16) 18. Qd4 $8 {This wonderful
move of Kasparov's coach has restored the balance, but leads merely to a draw.}
(18. Bxe5 $140 $6 Nxe5 19. Kh1 Qc5 20. Ba4 Rd8 $44) (18. Bxd7 $6 Qc5+ $1 19.
Kh1 Rxd5 20. Qg4 (20. Be3 Qd6 $1) (20. Bd2 Qd6 (20... Rxd7 $140 $4 21. Bb4 $1))
(20. Be6 $6 Rxd1 21. Raxd1 Kg8 22. Bd6 Qh5 23. Rxf7 Kh8 24. Rdf1 Qe2 25. Bh3
Rd8 26. Bb4 Rd1 $19 {Maenner,M-Arnold,L/Schonach 1979}) 20... f5 21. Qh3 (21.
Be6 fxg4 22. Bd6+ Ke8 23. Bxc5 Rxc5 24. Rae1 Re5 25. Rxe5 Bxe5 26. Re1 Rd8 $1
$17 (26... Bxb2 $1 {Nunn,J})) 21... Rxd7 22. Qxh7 Kf7 23. Bh6 (23. Rad1 Rad8
24. Rxd7+ Rxd7 25. h4 Qe7 26. Bg5 Qe2 27. Rf3 Qe5 28. Rf1 Qe2 29. Rf3 Rd1+ 30.
Kh2 Qe5+ $1 $17 {Yuferov,S-Kapengut,A/Minsk Sokol 1975/ [Shakhmaty v SSSR 76/
7-14]}) 23... Rg8 (23... Qf8 $6 24. g4 $1 $15 {Davies,N-Nunn,J/London 1976})
24. Rae1 Re7 25. Rd1 Qe5 26. Bf4 {Shofman,M-Kapengut,A/Jaroslavl VDFSO-ch 1975}
Qf6 $1 27. Qh3 (27. Rd6 Rh8 $1) 27... Rge8 $17) 18... Rf5 $1 (18... Re2 $2 19.
Bd6+ (19. Qxc4 Qxc4 20. Bxc4 Rxb2 21. Rad1 $16) 19... Kg8 20. Qg4 Rxb2 (20...
Qe8 21. Bxd7 Qe3+ 22. Kh1 Bxb2 23. Bf4 Qe4 24. Rad1 $18 {Tikkanen,H-Olsson,L/
Skara 2002}) 21. Bxd7 Qd8 22. Bc5 h5 23. Qh3 Qc7 24. Be3 Rf8 25. Rad1 $18 {
Szabo,B-Orosz,P/cr 1981}) (18... Rh5 19. Qxc4 (19. Bd6+ Kg8 20. Qf4 Rf5 21.
Qxc4 Nb6 22. Qxc8+ Nxc8 23. Bb4 Rxd5 24. Bc4 Rf5 $11) 19... Qxc4 (19... Nb6 $6
20. Qb4+ Kg8 21. Rac1 Qf8 22. Qb3 Rxd5 23. Be3 Qd6 24. Kh1 {Astolfi-Kovacevic,
Si/Cannes op 1989} Rd8 $11) 20. Bxc4 Nb6 21. g4 Rh4 22. Bd6+ Kg8 23. Be2 Nxd5
24. Bg3 Rh3 25. Kg2 (25. Bf3 Ne3 26. Rf2 Bd4 $17) 25... Rh6 $132) 19. Qxc4 (19.
Bh6 $2 Bxh6 20. Bxd7 Bg7 $1 21. Qxg7+ Kxg7 22. Bxc8 Rxf1+ 23. Kxf1 Rxc8 $17 {
Legky,N-Shvedtchikov,A/USSR 1978}) 19... Qxc4 (19... Nb6 $6 20. Qxc8+ (20. Qb4+
$6 Kg8 21. Rac1 Qd8 22. Bc7 Rxf1+ 23. Bxf1 Qg5 24. Rd1 Nxd5 25. Qxb7 Nxc7 26.
Qxc7 Be5 $132 {Molzahn,N-Goldberg,A/DDR-Cup8 sf01 corr 1983}) 20... Rxc8 21.
Bd6+ Kg8 22. Rxf5 gxf5 23. Rd1 Rd8 24. Bc5 Rxd5 25. Rxd5 Nxd5 26. Bxa7 Bxb2 27.
a4 $1 (27. Bc4 Nb4 28. Bc5 Ba3 29. Kf1 Kg7 30. Ke2 $14 {Schebler,G-Telljohann,
S/Dortmund op-A 1992}) 27... Kg7 28. Bd7 Kg6 29. Bc8 b6 30. Bb7 Bd4+ 31. Kf1
Ne3+ 32. Ke2 Ng4 33. a5 $1 $16 {Ushanev,MM-Riemer,Wolfgang/W-ch H579 corr 1985}
) 20. Bxc4 Bxb2 $5 (20... Nb6 $6 21. g4 $1 (21. Bb3 Bd4+ 22. Kh1 Bxb2 23. Rad1
Kg7 24. Be3 Rxf1+ 25. Rxf1 Be5 26. d6 f5 27. Bxb6 axb6 28. d7 $11 {
Delrieu-Teboul,R/FRA corr 1993}) 21... Bd4+ 22. Kg2 Rf6 23. Rad1 Bxb2 24. Bb3
Rd8 25. Rf2 $16) (20... Kg8 21. g4 Bd4+ 22. Kg2 Rf6 23. Rae1 Nb6 24. Bb3 Rd8
25. Be5 Rxf1 26. Kxf1 Bxe5 27. Rxe5 Kf8 $11 {Krysiak,J-Kyciak,B/Warsaw-ch corr
1993}) 21. Rab1 $5 (21. Rad1 Be5 (21... Kg7 22. g4 Rf6 23. g5 Rf5 24. d6 Be5
25. Be3 Rxf1+ 26. Rxf1 f5 27. gxf6+ Bxf6 28. Bd5 Re8 29. Bxa7 b6 30. Rd1 Re5
31. a4 $14 {Beecham,C-Hislop,A/corr 1982}) (21... Ne5 22. Bh6+ Ke7 23. Rxf5
gxf5 24. d6+ {1/2-1/2 Shakarov,A-Shmulenson,G/corr 1976.}) 22. Bh6+ Bg7 23.
Rxf5 gxf5 {1/2-1/2 Pripis,F-Kapengut,A/Daugavpils VDFSO-ch 1983}) 21... Bd4+
22. Kh1 Kg7 (22... Rc8 23. g4 $1 Rxf4 24. Rxf4 Rxc4 25. Rd1 Rc2 26. Rfxd4 Rxa2
$14) 23. g4 Rf6 24. Rxb7 Ne5 (24... Nb6 25. g5 Rf5 26. Bd3 Rxd5 27. Be4 Rdd8
28. Bg3 $16) 25. Bh6+ $1 Kxh6 26. Rxf6 Nxc4 27. Rfxf7 Nd6 (27... Kg5 $2 28. h4+
$1 Kxh4 29. Rf4 $18 {Barreras Garcia,A-Corzo,A/Sagua la Grande 1990}) 28. Rxh7+
Kg5 29. Rb4 Bc5 30. h4+ Kf6 $11) 14. e6 $1 (14. Bb5 $6 a6 (14... c4 $5) (14...
Bxe5 15. O-O c4 $5 (15... a6 $6 16. Nxe5 Rxe5 17. Qf3 f5 18. Bh6+ Kg8 19. Bd3
c4 20. Bxf5 $1 Qc5+ 21. Kh1 gxf5 (21... Rxf5 $2 22. Qc3 Re5 23. Rf8+ $1 $18)
22. Qg3+ Kf7 23. Qg7+ Ke8 24. Qh8+ Kf7 25. Qxh7+ Ke8 26. Qh8+ Ke7 27. Bf8+ Nxf8
28. Qxe5+ Kd8 29. Rae1 Nfd7 30. Qe6 Kc7 31. Rxf5 Qd6 32. Qe4 Nb6 33. Qd4 $18 {
Schoepper,O-Sondermann,J/Muenster op 1988}) 16. Bxd7 Nxd7 17. Ng5 (17. Nxe5
Qc5+ 18. Kh1 Rxe5 $15) 17... Nf6 18. Rxf6 Bxf6 19. Nxh7+ Kg7 20. Nxf6 Qc5+ 21.
Kh1 Kxf6 22. b4 Qf2 $19 {PerryY-mercure/chess.net INT 1999}) 15. Bxd7 (15. Ba4
$6 b5 16. Bc2 Nxe5 17. O-O Nxf3+ (17... Nbd7 $5 18. d6 c4 $17) 18. Qxf3 Ra7 19.
Bf4 Kg8 20. Rad1 Bxb2 21. Bh6 Be5 $17 {Schoepper,O-Crisan,A/Dortmund op 1989})
(15. Qa4 $6 Nb6 16. Qa5 N8d7 17. Bxd7 Nxd7 18. Be3 Bxe5 19. O-O Bxb2 20. Bh6+
Kg8 21. Rad1 Re2 $17 {Lynch,J-Long,J/IECG 1997}) 15... Nxd7 16. e6 $5 fxe6 17.
O-O Kg8 $15 {Nunn,J} 18. Kh1 exd5 19. Qxd5+ Kh8 20. Ng5 Ne5 21. Be3 (21. Bf4
Qd7 22. Qxc5 Nd3 $15) 21... Qc6 22. Qxc6 Nxc6 23. Bxc5 Kg8 24. h4 (24. Rae1
Bxb2 25. Ne4 Re6 $17) 24... h6 25. Nh3 Re2 $17 {Garcia,N-Danailov,S/Alcobendas
op 1994}) 14... fxe6 15. dxe6 $1 {A very simple solution, but in my view, the
most logical. The attacking potential of White creates serious difficulties
for Black.} (15. d6 $6 Kg8 16. Bc4 Nc6 17. O-O Nb6 18. Bb3 Nd4 19. Ng5 Qc6 20.
Qg4 Nxb3 21. axb3 Qxd6 22. Bf4 Qd7 $1 $17 23. Be3 Bd4 24. Rae1 Re7 25. Kh1 e5
$19 {Vukovic,S-Petrosian,T/Bar 1980}) (15. Be2 exd5 (15... Nf6 $5 16. d6 $1 $44
) 16. O-O Nf6 17. Ng5 $1 Qc6 $1 (17... Kg8 $2 18. Rxf6 $1 Bxf6 19. Qxd5+ Kh8 (
19... Kg7 20. Qf7+ Kh8 21. Qxh7#) 20. Nf7+ Kg7 21. Bh6+ Kg8 22. Nd6+ Qe6 23.
Qxe6+ Rxe6 24. Bc4 $18 {Hardicsay,P}) 18. a4 $5 (18. Bb5 $5 Qxb5 19. Nxh7+ Kg8
(19... Ke7 20. Bg5 Nbd7 21. Qxd5 $18) 20. Nxf6+ Bxf6 21. Qxd5+ (21. Rxf6 Kg7
22. Rxg6+ $1 Kxg6 23. Qg4+ Kf7 24. Qf5+ Ke7 25. Qxd5 Kf6 26. Bh6 $18) 21... Kg7
22. Bg5 (22. Rxf6 $2 Re1+ $1) 22... Nd7 23. Rxf6 Nxf6 24. Bxf6+ Kxf6 25. Rf1+
Kg7 (25... Qxf1+ $14) 26. Qf7+ $11 {Hardicsay,P}) 18... c4 $8 19. Nxh7+ Kg8 20.
Nxf6+ (20. Rxf6 Bxf6 21. Nxf6+ (21. Qxd5+ $2 Kxh7 $1 $19) 21... Qxf6 22. Qxd5+
Qf7 23. Qxf7+ (23. Bxc4 $4 Re1+) 23... Kxf7 24. Bxc4+ Kg7 25. Bg5 $44) 20...
Bxf6 21. Rxf6 $1 Qxf6 22. Qxd5+ Qf7 23. Qxf7+ (23. Bxc4 $4 Re1+) 23... Kxf7 24.
Bxc4+ Kg7 25. b4 Nc6 26. Bb2+ Kh6 $1 27. Ra3 Rad8 (27... Nxb4 $2 28. Bf6 Kh5
29. Rh3+ Kg4 30. Bf7 $16) 28. Bf6 Rd1+ 29. Kf2 Rd2+ 30. Kf1 {1/2-1/2 Sobek,
J-Hardicsay,P/Ostrava 1979/Inf 28}) 15... Rxe6+ ({Here I would recommend
instead} 15... Nb6 {Kortschnoj} 16. Be2 Qxe6 17. Ng5 {looks much stronger.} (
17. O-O {Kortschnoj} Kg8 {with chances to survive.}) {More stubborn is} 17...
Qf5 $5 (17... Qe7 $2 {Kortschnoj} 18. O-O+ {- check! black is losing.}) 18. Rf1
Nc6 19. Rxf5+ gxf5 {white's task to neutralize the activity of the black
pieces is not easy!}) 16. Be2 Qe8 $6 $146 {I think, this is an unlucky novelty.
} (16... Bf6 $6 17. O-O Kg7 18. Bc4 Re7 19. Qd2 Nc6 20. Qh6+ Kh8 21. Bg5 Qf8
22. Qh3 $40) ({In my opinion, Black needs to hide rapidly the king into a safe
place.} 16... Kg8 17. O-O Nb6 (17... c4 18. Ng5 Qc5+ (18... Re5 19. Kh1 Nf6 20.
b3 $1 $16) 19. Kh1 Re7 20. Rf4 $16) 18. a4 {The maximum that Black can obtain,
this is a shade worse ending after:} Qe8 (18... c4 19. a5 Qc5+ 20. Kh1 N6d7 (
20... Nd5 21. Ra4 b5 22. axb6 Nxb6 23. Ng5 {-20...N6d7}) 21. Ra4 b5 22. axb6
Nxb6 23. Ng5 Rd6 24. Qc2 Nc6 (24... Rc6 25. b3 c3 26. Rh4 $40) 25. Rxc4 $1 Qd5
(25... Nxc4 $140 $2 26. Bxc4+ Rd5 27. Qe4 $18) 26. Rc5 Nd4 27. Rxd5 Rxd5 28.
Qe4 Rc8 29. Bc4 {1-0 Bozinovic-Fend/1991}) 19. Qb3 Kh8 20. Bb5 c4 21. Bxe8 cxb3
22. Bf7 Rc6 23. Bxb3 $14 {^^}) 17. O-O Rxe2 {Kortschnoj: 'It looks already as
the best practical chance.'} ({After} 17... Nf6 {Kortschnoj} 18. Bc4 Re4 19.
Bd5 {black is losing an exchange anyway.}) 18. Nd4+ Kg8 19. Nxe2 $16 Nc6 20.
Bd2 Nb6 21. Bc3 Rd8 22. Qe1 Ne5 $6 ({Black misses the last possibility to
attempt to rescue after:} 22... Nd4 23. Bxd4 (23. Nxd4 cxd4 24. Ba5 Qxe1 25.
Raxe1 Bh6 $14) 23... cxd4 24. Nf4 Qe3+ 25. Kh1 Rf8 $5 (25... Qxe1 $6 26. Raxe1
Bh6 27. Ne6 $16) 26. Rf3 Qxe1+ 27. Rxe1 g5 28. Ne6 Rxf3 29. gxf3 Bf6 {but also
in this case Black gets the poor ending.} 30. Nxg5 $1 Bxg5 31. Rg1 $16) 23. Qh4
Nd5 (23... Na4 $6 24. Rad1 $1 Rxd1 25. Rxd1 Nf7 (25... Nxc3 $2 26. Rd8 Nxe2+
27. Kf1 $18) 26. Bxg7 Kxg7 27. Rf1 $18) 24. Rad1 $16 {[%csl Rd8][%cal Gd1d8,
Gc4g8] White has not only the material advantage, but also a strong initiative.
} Rd7 25. Bxe5 Qxe5 (25... Bxe5 $2 26. Qc4 $18) 26. Nc3 {[%csl Rd5,Rd7]} Nf6 (
26... Qe3+ 27. Kh1 Bxc3 28. bxc3 Qxc3 29. Qa4 Rd8 30. Rxd5 $1 $18) 27. Rxd7
Nxd7 28. Qd8+ Nf8 29. Nd5 $18 Qd4+ 30. Kh1 h5 31. Nf6+ Kh8 32. Nd7 $1 Qc4 33.
Rxf8+ Kh7 34. h4 Bxf8 35. Nxf8+ Kg8 36. Nd7+ Kh7 37. Qe7+ 1-0

[Event "Maroczy Memorial"]
[Site "Szeged"]
[Date "1997.11.20"]
[Round "7"]
[White "Ivanisevic, Ivan"]
[Black "Zhang, Zhong"]
[Result "1/2-1/2"]
[ECO "A66"]
[WhiteElo "2540"]
[BlackElo "2475"]
[Annotator "Konikowski,J"]
[PlyCount "36"]
[EventDate "1997.11.14"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "HUN"]
[EventCategory "13"]
[SourceTitle "CBM 062"]
[Source "ChessBase"]
[SourceDate "1998.01.31"]
[SourceVersion "1"]
[SourceVersionDate "1998.01.31"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 c5 3. d5 e6 4. Nc3 exd5 5. cxd5 d6 6. e4 g6 7. f4 Bg7 8. e5 (8.
Bb5+ $5) 8... Nfd7 (8... dxe5 9. fxe5 Nfd7 10. e6 fxe6 11. dxe6 $13) 9. Nb5 (9.
exd6 O-O 10. Nf3 Nf6 11. Be2 $14) 9... dxe5 10. Nd6+ Ke7 11. Nxc8+ (11. Nb5 $6
Re8 $1) 11... Qxc8 12. Nf3 Re8 13. fxe5 (13. Bc4 Kf8 14. O-O e4 15. Ng5 Nb6 16.
Bb5 Rd8 17. Nxh7+ Kg8 18. Ng5 c4 19. Qe1 Qc5+ 20. Be3 Qxb5 21. f5 Rxd5 22. fxg6
$1 Rxg5 23. gxf7+ Kf8 (23... Kh7 24. Qh4+ Rh5 25. Qxe4+ Kh8 26. Qe8+ Kh7 27.
Qg8+ $18) (23... Kh8 24. Qh4+ Rh5 25. Qd8+ $18) 24. a4 $1 Qa5 25. Qh4 Rf5 26.
Qh7 Rxf1+ 27. Rxf1 N8d7 28. Qg8+ Ke7 29. Qxg7 Rf8 30. Bg5+ Kd6 31. Bf4+ Ke7 32.
Bg5+ $11) 13... Nxe5 (13... Kf8 $5 14. e6 fxe6 15. Be2 (15. d6 $13) 15... exd5
16. O-O Nf6 17. Ng5 Qc6 (17... Kg8 $2 18. Rxf6 $1 Bxf6 19. Qxd5+ Kh8 (19... Kg7
20. Qf7+ Kh8 21. Qxh7#) 20. Nf7+ Kg7 21. Bh6+ Kg8 22. Nd6+ Qe6 23. Qxe6+ Rxe6
24. Bc4 $18) 18. a4 (18. Nxh7+ $5 Kg8 19. Bb5 Qxb5 20. Nxf6+ Bxf6 21. Rxf6 Kg7
22. Rxg6+ $1 Kxg6 23. Qg4+ Kf7 24. Qf5+ Ke7 25. Qxd5 Kf6 26. Bh6 $18) 18... c4
19. Nxh7+ Kg8 20. Nxf6+ Bxf6 21. Rxf6 $1 Qxf6 22. Qxd5+ Qf7 23. Qxf7+ Kxf7 24.
Bxc4+ Kg7 25. b4 Nc6 26. Bb2+ Kh6 27. Ra3 Rad8 28. Bf6 Rd1+ 29. Kf2 Rd2+ 30.
Kf1 {1/2-1/2 Sobek-Hardicsay/Ostrava/1979/}) 14. Bb5 Nbd7 15. Nxe5 Kf8 $1 16.
O-O Rxe5 17. Bf4 c4 (17... Rh5 $5 18. g4 (18. Qf3 Bd4+ 19. Kh1 Nf6 $15) 18...
Bd4+ 19. Kg2 Rxd5 20. Bc4 Nb6 21. Bxd5 Nxd5 22. Bh6+ Kg8 23. Qf3 Qd7 $13) 18.
Qd4 $1 (18. Bxd7 $2 Qc5+ 19. Kh1 Rxd5 $17) 18... Rf5 (18... Rh5 19. Qxc4 Nb6
20. Qb4+ Kg8 21. Rac1 Qf8 22. Qb3 Rxd5 23. Be3 Qd6 24. Kh1 Bd4 25. Bxd4 {
1-0 Astolfi-Kovacevic,S/Cannes op 1989/}) 1/2-1/2

[Event "Interzonal-14c"]
[Site "Zagreb"]
[Date "1987.??.??"]
[Round "6"]
[White "Nogueiras Santiago, Jesus"]
[Black "Gruenfeld, Yehuda"]
[Result "1/2-1/2"]
[ECO "A66"]
[WhiteElo "2555"]
[BlackElo "2545"]
[Annotator "Stohl,I"]
[PlyCount "57"]
[EventDate "1987.08.01"]
[EventType "tourn"]
[EventRounds "17"]
[EventCountry "YUG"]
[EventCategory "12"]
[SourceTitle "CBM 004"]
[Source "ChessBase"]
[SourceDate "1988.06.01"]
[SourceVersion "1"]
[SourceVersionDate "1988.06.01"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 c5 4. d5 exd5 5. cxd5 d6 6. e4 g6 7. f4 Bg7 8. e5
Nfd7 9. Nf3 O-O 10. Be2 dxe5 11. O-O e4 $6 $146 (11... a6) (11... exf4) 12.
Nxe4 Nf6 13. Nc3 $1 Bg4 (13... Nbd7 14. d6 Re8 (14... Nb6 15. Be3 $16) 15. f5
$1 $16) 14. h3 (14. Be3 $5 $14) 14... Bxf3 15. Bxf3 Qb6 (15... Re8 16. Qb3 $1
Qb6 17. Qxb6 axb6 18. Nb5 $16) 16. Be3 $1 Na6 (16... Nbd7 17. Rb1 {/\b4} (17.
Qd2 $5) 17... Rfe8 18. Bf2 Qd6 19. g3 a6 20. a4 $14) 17. Qb3 $6 (17. Qd2 $1
Rfe8 18. Bf2 Rad8 19. Rfd1 Qb4 20. Rac1 $16) 17... Nd7 18. d6 Nb4 $1 (18...
Qxd6 $2 19. Rfd1 Bd4 20. Nb5 $18) 19. Na4 $6 (19. Rad1 $1 c4 (19... Bd4 20.
Bxd4 cxd4 21. Nd5 Nxd5 22. Qxd5 d3+ 23. Kh1 Qxb2 24. Rxd3 $16) 20. Bxb6 cxb3
21. Bc7 bxa2 22. Bxb7 Rae8 23. Ba5 $16) (19. a3 Nc6 $13 (19... c4 $5 $13))
19... Qxd6 20. Nxc5 Bd4 $1 21. Nxb7 (21. Ne4 $5 Bxe3+ (21... Qb6 22. Bxd4 Qxd4+
23. Kh2 $16) 22. Qxe3 Qb6 23. Qxb6 Nxb6 24. Nc5 (24. Nd6 Rad8 25. Nxb7 Rd2 $14)
24... Rac8 $1 25. Rfc1 N4d5 $14) 21... Qxf4 22. Bxd4 Qxd4+ 23. Kh2 Ne5 $1 $10
24. Rad1 Nbd3 $1 25. Be2 Rab8 26. Bxd3 Nxd3 27. Qxd3 (27. Rxd3 Qe5+ 28. Kh1 Qc7
$10) 27... Qxd3 28. Rxd3 Rxb7 29. b3 1/2-1/2

[Event "SWE-ch"]
[Site "Falun"]
[Date "2012.07.15"]
[Round "9"]
[White "Grandelius, Nils"]
[Black "Hedman, Erik"]
[Result "0-1"]
[ECO "A66"]
[WhiteElo "2570"]
[BlackElo "2381"]
[Annotator "Ziegler,A"]
[PlyCount "100"]
[EventDate "2012.07.07"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "SWE"]
[EventCategory "9"]
[SourceTitle "CBM 149 Extra"]
[Source "ChessBase"]
[SourceDate "2012.08.24"]
[SourceVersion "1"]
[SourceVersionDate "2012.08.24"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 c5 3. d5 e6 4. Nc3 exd5 5. cxd5 d6 6. e4 g6 7. f4 Bg7 8. e5 {
The Mikenas is not very dangerous against a well prepared Benoni player.} (8.
Nf3 {is the normal move.}) 8... Nfd7 $1 (8... dxe5 {is slightly worse, but
should be enough for equality.}) 9. Ne4 {Here black has virtually no option
but to play the best move.} (9. Nb5 {leads to the same position.}) 9... dxe5
10. Nd6+ Ke7 11. Nxc8+ Qxc8 12. Nf3 {Here Black can choose what to do.} Rd8 $1
{Rybka gives this as the best, and Black is sligthly better.} (12... Re8 {
is the human move and the main move.}) 13. fxe5 Nxe5 14. Bg5+ Kf8 {A stunning
novelty. Erik Hedman have been waiting a long time for this move!} ({I
recommended} 14... f6 {in my resent video about the modern Benoni. We can then
expekt something like:} 15. Nxe5 fxg5 16. Nc4 Qf5 {and Black should be able to
maintain his material advantage at the cost of some lack of coordination.
However, White is behind in development and can not so easlily make use of it.}
) 15. Bxd8 Qxd8 {[#] The exchange sacrifice is a sofisticated one. Let's have
a look at the position: Black has a light initiative. We have different
coloured bishops. That is usually beneficial for the player who sacrifices.
What can the bishops do? Well, Black's bishop will most probably end up on d4
controlling the board. I usually call this type of sacrifice: "An exchange
sacrifice in order to get a piece in the centre which dominates the board"!
Bronstein once said: I sacrifice an exhange in order to control the centre! So
Black will get the bishop to d4. The Black queen is already on a dark square
so she can coordinate an attack together with the bishop. The Black knight has
a long way to go before it can be a threat for White. the same can be said
about the rook. So essentially Black short sightly only threats white with two
pieces. Normally you should be able to parry such threats. What can White do?
The rooks strives for open lines and the e-file is the only one. There is
however not so much to do there. An attack on the f-file does not look so
threatening, but it is maybe the only thing he can do. White has problems with
the b2-pawn. The wisest thing to do seems to sacrifice it in order to get the
b-pawn. In that way Black get's another open file and black's pawns will be
isolated. All in all, black has more than sufficient compensation for the
sacrificed material.} 16. Be2 (16. Nxe5 Bxe5 17. Qc2 $1 {looks better. White
is hoping that black will take the d-pawn...} Qxd5 (17... Qa5+ {is better.})
18. Bc4 Qd4 19. Rf1 f5 20. Rd1 Qh4+ 21. g3 Qe7 {And white has some murky
chances like:} 22. Rxf5+ gxf5 23. Qxf5+ Bf6+ 24. Kf1 Kg7 25. Qg4+ Kh6 26. Qh3+
$11) 16... Nxf3+ 17. Bxf3 {The bishop is not a very big threat here.} Bxb2 {
Little bit nervous.} (17... Nd7 $1 {If we are going to take the b-pawn it
should be done on our own premissess.} 18. O-O Bxb2 19. Rb1 Bd4+ 20. Kh1 Nb6)
18. Rb1 Bc3+ 19. Kf1 Qa5 20. g3 Bd4 21. Kg2 ({the pawn to sacrifice is the
d-pawn.} 21. a4 {in order to obstruct the queen was better.}) 21... Qxa2+ 22.
Kh3 Nd7 23. Rxb7 Ne5 {White has achieved moderate success. He has some open
lines.} 24. Rf1 Qa6 {Black finds a stable manouvre.} 25. Qb1 Qd6 26. Bg2 {
indecisive.} ({The thematic} 26. Qb5 {with the idea of controlling a lot of
White squares, and especially the a4-square in order to not let the a-pawn be
able to walk down was more prudent.}) 26... Kg8 27. Be4 a5 $1 {Now there is no
more defence.} 28. Rb6 (28. Qb5 a4 29. Rb6 Qe7 30. Ra6 Rxa6 31. Qxa6 Qd7+ 32.
Kg2 Ng4 33. Qc6 $1 Ne3+ 34. Kh1 Qd8 35. Rf3 a3 36. Bb1 Ng4 37. Rf1 Ne5 38. Qb7
Qa5 39. Ba2 Qd2 {and black wins.}) 28... Qf8 {Winning a tempo because of the
threat Qh6+.} (28... Qd8 29. d6) 29. Qc1 a4 30. d6 Qc8+ $1 {controlling the
d7-square, and more important, preparing to sacrifice another exchange with
check!} (30... a3 31. Bxa8 Qxa8 32. d7 Nxd7 33. Rd6 {is less clear.}) 31. Kg2
a3 32. Bxa8 Qxa8+ 33. Kh3 a2 34. Rb2 Qc8+ 35. Kg2 Qc6+ 36. Kh3 Qxd6 {Erik
Hedman has a nice contact with the position.} (36... Bxb2 $2 37. Qxb2 Qxd6 38.
Qxa2 {gives White serious hopes for a draw.}) 37. Qc2 (37. Rxa2 Qe6+ 38. Kg2
Qxa2+) 37... Qe6+ 38. Kg2 Qc6+ 39. Kh3 Qc8+ 40. Kg2 Qa8+ 41. Kh3 a1=Q 42. Rxa1
Qxa1 {White plays some few more moves in order to the accostumed with the
shock of this game.} 43. Rb1 Qa6 44. Qe4 Qe6+ 45. Kg2 h5 46. Re1 Kg7 47. Re2
Qg4 48. Re1 Qxe4+ 49. Rxe4 Kf6 50. Re2 Ke6 {Nils Grandelius was severly
critized by many by his choice of opening. As it turned out he would have been
the new Swedish champion if he won this game. But we must congratulate Erik
Hedman for a wonderful game, which will most probably find it way into future
opening manuals!} 0-1

