[Event "Heemsoth Memorial email"] [Site "ICCF email"] [Date "2008.??.??"] [Round "?"] [White "Chytilek, Roman"] [Black "Langeveld, Ron"] [Result "1-0"] [ECO "D27"] [WhiteElo "2663"] [BlackElo "2692"] [Annotator "Chytilek"] [PlyCount "94"] [EventDate "2008.??.??"] [EventType "tourn"] [EventRounds "16"] [SourceTitle "Opening Encyclopaedia 21"] [Source "ChessBase"] [SourceDate "2021.04.01"] [SourceVersion "1"] [SourceVersionDate "2021.04.01"] [SourceQuality "1"] 1. d4 d5 2. c4 dxc4 3. Nf3 Nf6 4. e3 e6 5. Bxc4 c5 6. O-O a6 7. Bb3 b5 { At the beginning of 2008, this was still a move with a good reputation. However, objectively the safer choice is} (7... Nc6) ({or} 7... cxd4) 8. a4 b4 $6 {The main line, which is however dubious.} (8... c4 $142 9. Bc2 Bb7 { and proving White's edge is less straightforward:} 10. axb5 axb5 11. Rxa8 Bxa8 12. Qe2 (12. Nc3 b4 13. Ba4+ Nbd7 (13... Nfd7 $5 {/\} 14. Nb5 Bxf3 15. Qxf3 Qa5 16. Qd1 Nb6 17. Qh5 Qxa4 18. Nc7+ Kd7 19. Qxf7+ Kc8 20. Nxe6 Qd7 $15) 14. Nb5 Be7 15. Ne5 Qc8 16. Qe2 O-O (16... Bxg2 $2 17. Kxg2 Qa8+ 18. Qf3 Qxa4 19. Qc6 O-O 20. Nxd7 Nxd7 21. Qxd7 Bf6 22. Qb7 Rd8 23. e4 Qc2 24. e5 Rd5 25. Nd6 { 1-0,Hauchard,A (2518)-Ganguly,S (2340)/Shenyang/1999/}) 17. Nxc4 (17. Qxc4 Qa6 $1 $36 {?b5}) 17... Bxg2 $11 {/=/+}) (12. b3 cxb3 13. Bd3 b4 14. Nbd2 Be7 15. Qxb3 O-O 16. Bb2 Bd5 $6 17. Qc2 Qb6 (17... h6 $14) 18. e4 Bb7 19. e5 $16 { Hartl,H-Serra,J/corr/2006/}) 12... Nbd7 (12... Nc6 13. b3 cxb3 14. Bxb3 Qb6 15. e4 Na5 16. Bc2 Be7 17. Bg5 h6 18. Bh4 Nh5 (18... Nc4 $13) 19. Nc3 Bxh4 (19... g5 $5) 20. Nxh4 Nf4 21. Qxb5+ Qxb5 22. Nxb5 $14 {Dautov,R (2636)-Pelt,A (2144)/ Deizisau/2002/}) 13. b3 cxb3 14. Bxb3 b4 15. Nbd2 Be7 16. e4 O-O 17. Bb2 Qb8 18. Ra1 Bc6 19. Bc4 Re8 20. h3 Bf8 $132 {Kuzubov,Y (2441)-Tarlev,K (2341)/ Simferopol/2003/}) 9. e4 $1 ({A more accurate move order than} 9. Nbd2 Bb7 10. e4 Be7 11. e5 Nfd7 $1 12. Nc4 O-O $132) 9... Bb7 {Black's most recent try.} ( 9... Nxe4 $6 10. d5 Be7 11. Re1 Nf6 12. dxe6 Bxe6 13. Qxd8+ Kxd8 (13... Bxd8 14. Ng5 O-O 15. Nxe6 fxe6 16. Rxe6 Kh8 17. Bf4 Nbd7 18. Nd2 $16 {Erdos,V (2420) -Pilgaard,K (2446)/Budapest/2003/}) 14. Bxe6 fxe6 15. Ng5 Kd7 16. Nxe6 { is definitely unpleasant for Black:} Nc6 17. Bg5 (17. Nd2 $142 $1 $36 {/\Nc4}) 17... h6 18. Bh4 g5 19. Bg3 Nh5 (19... Nd8 $142 20. Ng7 $1 $14) 20. Nd2 Nxg3 21. hxg3 Nd8 {Pedersen,N (2513)-Fodor,T (2429)/Budapest/2006/} 22. Nc7 $1 $16) 10. e5 Ne4 ({With White's N still on b1,} 10... Nfd7 $2 {runs into} 11. d5 $16) (10... Nd5 11. Nbd2 (11. Bg5 Be7 $1 12. Bxe7 Nxe7 $132) {and now} 11... cxd4 ( 11... Nd7 12. Nc4 $36) 12. Nc4 {transposes to Kasparov-J.Piket.}) 11. Nbd2 $32 {By swapping the exposed Ne4 White increases his lead in development.} Nxd2 ( 11... cxd4 12. Nxe4 Bxe4 13. Nxd4 $36 {- see the notes to Kasparov-J.Piket.}) ( 11... Be7 12. Nxe4 Bxe4 13. Qe2 Bb7 (13... Bd5 14. Bxd5 Qxd5 15. dxc5 $32 { [%csl Rb4] >}) 14... O-O 15. Bf4 $16 {Avrukh}) 12. Bxd2 cxd4 (12... Nc6 13. Bg5 Qd7 14. d5 $16) 13. Ng5 $1 {The main idea behind the pawn sacrifice, which appeared at the same time also in over-the-board games (Wang Hao played it 2! days earlier, than White in our game).} (13. Bg5 $143 Be7 14. Bxe7 Qxe7 15. Nxd4 Nd7 16. Qg4 Nc5 17. Bc2 (17. Bc4 {Matlakov,M (2416)-Kashtanov,R (2352)/Peterhof/2007/} O-O $11 {/<=>}) 17... O-O (17... O-O-O $6 18. Rac1 Kb8 19. Rfd1 h5 20. Qf4 g5 21. Qe3 g4 22. Bb1 Ka8 23. Rc4 Nxa4 24. Rdc1 Qd7 25. Be4 $40 {Bocharov,D (2602)-Vallejo Pons,F (2679)/ Moscow Aeroflot/2007/}) 18. Rad1 Rac8 $11 {is considerably less incisive, than the text move. Here Black's forces are active and he can claim equality.}) 13... Be7 ({Relatively safer, but completely devoid of active prospects is} 13... Bd5 14. Rc1 $1 Nc6 15. Bxd5 Qxd5 16. Qf3 Qxf3 17. Nxf3 Kd7 18. Rfd1 Rc8 19. Be1 (19. Bg5 $142 $5 {/\} h6 20. Nxd4 Ne7 21. Nf3+ Nd5 22. Rxd5+ $1 exd5 23. e6+ $1 Kxe6 24. Rxc8 hxg5 25. Nxg5+ $36) 19... Ne7 20. Rxc8 Kxc8 21. Rc1+ ( 21. Nxd4 Nd5 22. Nc6 Kc7 23. Rc1 Kb6 24. Nd8 Be7 25. Nxf7 Rf8 26. Nd6 Bxd6 27. exd6 Rd8 $11) (21. Rxd4 $5) 21... Kb7 22. Ng5 Nc6 23. Nxf7 Rg8 24. Ng5 Nxe5 25. Nxe6 Nd3 26. Rd1 Nxb2 27. Rxd4 Nxa4 28. Nxf8 Rxf8 29. Rxb4+ Nb6 $11 {Ramirez,A (2531)-Ganguly,S (2631)/Philadelphia/2008/}) ({The most principled continuation is} 13... Nd7 14. f4 Nc5 15. f5 Nxb3 16. Qxb3 Qd5 {Although the long-term trumps are on Black's side, it's difficult to withstand White's immediate pressure. In any case it's Black who risks more here:} 17. Qh3 $5 ( 17. Qg3 Be7 $5 (17... h6 18. fxe6 $5 (18. Nxf7 Kxf7 19. fxe6+ Kg8 20. Rf7 $44 { Wang Hao (2691)-Rublevsky,S (2699)/Poikovsky/2008/ - see the notes to this game by Ftacnik in CBM 125.}) 18... hxg5 19. exf7+ Kd7 20. Rac1 Qe6 (20... Bc6 21. Bxg5 d3 22. h3 $1 Bc5+ 23. Kh2 {[%CAl Rf1d1] /\Rfd1+/-}) 21. Bxg5 Rc8 22. Qf4 Rxc1 23. Rxc1 Bc6 24. Qxd4+ Qd5 25. Qg4+ Kc7 26. e6 Bd6 27. h3 $6 (27. h4 $1 $36 {/\} Kb7 28. Rd1 Bc5+ 29. Kh1 $16) 27... Kb7 28. Rd1 (28. Be3 $5 Qe5) 28... Bc5+ 29. Kh2 {1/2,Khenkin,I (2647)-Gharamian,T (2555)/Bundesliga/2009/} ( 29. Kh1 $4 Qxg2+ 30. Qxg2 Rxh3#) (29. Kf1 Qe5 30. e7 Bxa4 $1 $132 {[%CAl Ra4b5] })) 18. Nxf7 (18. fxe6 fxe6 19. Nf7 O-O $11) (18. Rae1 $5) 18... Kxf7 (18... Qxg2+ 19. Qxg2 Bxg2 20. Nxh8 Bxf1 21. Rxf1 $16) 19. fxe6+ Ke8 20. Qxg7 Bf8 21. Rxf8+ (21. Qf7+ Kd8 22. Bg5+ Kc8 23. Qd7+ Qxd7 24. exd7+ Kxd7 25. Rf7+ Kc6 26. Rc1+ Kb6 27. e6 Bd6 $13) 21... Rxf8 22. Bxb4 Qxg2+ $8 23. Qxg2 Bxg2 24. Bxf8 Kxf8 25. Kxg2 Rb8 26. Kf3 Rxb2 27. Ke4 d3 $1 $11) 17... h6 18. Rf2 $1 (18. fxe6 hxg5 19. exf7+ Kd8 20. Qg4 Kc7 21. Rac1+ Bc6 22. Bxg5 $44) 18... exf5 (18... hxg5 $2 19. Qxh8 exf5 20. Bxb4 {1-0,Grigorov,G (2479)-Zygouris,H (2225)/Bansko/ 2010/}) 19. e6 hxg5 (19... fxe6 20. Nxe6 $1 Qxe6 21. Re1 Be4 22. Rxf5 Bd6 23. Qg4 $40) 20. Qxh8 fxe6 21. Rc1 Kd7 22. Qh5 e5 (22... Be7 23. Qf7 $16) 23. Qg6 Bc6 24. Bxg5 b3 25. Qxf5+ Kc7 26. Qg6 Rc8 27. Qf7+ Kd6 28. Qa7 Ra8 29. Qb6 a5 30. Bf6 $16 {/+-,Figlio,G (2434)-Tritt,M (1896)/corr/2008/}) 14. Qh5 Bxg5 15. Bxg5 Qd7 16. Rac1 $5 $146 {Having a wider choice, White chooses a less forcing line.} ({More energetic is} 16. f4 {However,} Bd5 $142 $5 {seems to be less clear-cut:} (16... O-O 17. f5 $1 {, as suggested by Avrukh, is also strong and more forcing, he analyses the following lines:} (17. Bf6 gxf6 18. Qh6 f5 $1 ( 18... fxe5 $2 19. f5 $1 exf5 20. Qg5+ Kh8 21. Qf6+ Kg8 22. Rxf5 Be4 23. Rg5+ Bg6 24. Rf1 $1 a5 25. Rxg6+ hxg6 26. Qxg6+ Kh8 27. Qh5+ Kg7 28. Qxe5+ f6 29. Qg3+ Kh7 30. Rf4 $18) {and White has only a perpetual with} 19. Qg5+ Kh8 20. Qf6+ $11) (17. Rae1 d3 (17... Nc6 18. Rf3 $16) 18. f5 Qd4+ (18... Nc6 19. Re4 $40) 19. Rf2 Nd7 20. fxe6 $142 $1 (20. Re3 $5 {Moiseenko} Be4 (20... Nc5 21. Rh3 h6 22. Bxh6 g6 23. Rg3 Qxe5 24. Rxg6+ fxg6 25. Qxg6+ Kh8 26. f6 $18) 21. Qh4 exf5 22. Rh3 f4 23. Qxf4 Qxe5 (23... Kh8 24. Be7 $16) 24. Qxe5 Nxe5 25. Re3 Ng4 26. Rxe4 Nxf2 27. Kxf2 Rfe8 28. Kf3 $14) (20. f6 $6 gxf6 21. exf6 Kh8 22. Be3 Qe4 23. Bd2 Qd4 24. Be3 Qe4 25. Bd1 Nxf6 26. Qc5 {Moiseenko,A (2643) -Kuzubov,Y (2606)/Moscow/2008/} Rac8 27. Qe7 Ng8 28. Qd6 $44) 20... fxe6 21. Be3 Rxf2 (21... Qxe5 22. Qxe5 Nxe5 23. Rxf8+ Rxf8 24. Bc5 $18) (21... Qe4 22. Bxe6+ Kh8 23. Bf5 Rxf5 24. Qxf5 $18) 22. Bxe6+ Kh8 23. Bxd4 Rxg2+ 24. Kf1 {/\} Rf8+ 25. Bf5 g6 26. e6+ Kg8 27. exd7 gxh5 28. Re8 $18) 17... exf5 (17... d3 18. fxe6 Qd4+ 19. Rf2 fxe6 20. Bxe6+ Kh8 21. Bf5 (21. Bf6 Be4 22. Qg4 gxf6 23. Bf5 Nd7 24. Qxe4 $16) 21... Qxf2+ 22. Kxf2 Rxf5+ 23. Kg1 Nc6 24. Qg4 Rxe5 25. Qd7 $16) 18. Rae1 Qc6 (18... Bd5 19. Bf6 $1 $18) (18... Kh8 19. e6 fxe6 20. Rxe6 Nc6 21. Rf4 {[%CAl Rh5h7,Rf4h4]} Qf7 22. Qxf7 Rxf7 23. Rxc6 $18) 19. Rf2 Nd7 ( 19... Qg6 20. Qxg6 hxg6 21. e6 Nc6 22. Rfe2 $1 {/\} fxe6 23. Bxe6+ Rf7 $8 ( 23... Kh7 24. Re3 dxe3 25. Rxe3 $18) 24. Bxf7+ Kxf7 25. Re7+ $18) 20. Be7 g6 21. Qg5 $40 {[%CAl Re5e6,Rf2f5] /\e6,Rf5+-}) 17. Bxd5 (17. Bc2 b3 $132) 17... Qxd5 18. f5 Nd7 (18... exf5 19. Rae1 d3 (19... O-O 20. Bf6 $1 d3 21. Bxg7 $18) 20. e6 O-O 21. Be7 fxe6 (21... g6 22. Qh6 Rc8 23. Re4 $3 $18) 22. Bxf8 Nc6 23. Qf3 $14 (23. Bxg7 Kxg7 24. Qg5+ Kf7 25. Qh6 Rg8 $132)) (18... Nc6 19. Rae1 d3 $5 (19... h6 20. fxe6 Qxe6 (20... O-O 21. e7 Rfe8 22. Bxh6 $40 {/\} Nxe7 23. Qg5 Ng6 24. e6 $1 $18) 21. Bf6 Kf8 22. Bxg7+ Kxg7 23. Rf6 Qd5 24. Qg4+ Kf8 25. e6 $40) 20. fxe6 O-O $13 (20... Qxe6 21. Bf6 d2 22. Re2 $36)) 19. Rae1 d3 20. Bd2 a5 (20... O-O 21. Re3 $16) 21. Qg5 g6 $1 (21... h6 $2 22. Qxg7 O-O-O 23. Qxf7 Rhg8 24. Rf2 Rde8 25. fxe6 Qxe6 26. Qf3 $18 {Arnaudov,P (2408)-Levushkina, E (2253)/Munich/2009/}) 22. fxe6 fxe6 $13) (16. Rad1 Nc6 17. f4 Na5 18. Ba2 Be4 (18... Qc6 19. Qg4 (19. Rf2 Qxa4 20. Bb1 g6 $13) 19... O-O 20. Rf2 $1 $16 {->} (20. Bh6 Qxg2+ $15)) 19. Qe2 Bf5 $1 (19... Bg6 20. f5 Bxf5 21. Rxf5 b3 22. Bxb3 Nxb3 23. Rf3 Qd5 24. Qc2 Rb8 25. Rxb3 $1 Qxb3 26. Qc6+ Kf8 27. Rc1 f6 (27... Re8 28. Qd7) 28. exf6 Kf7 29. Qd7+ Kg6 30. Qxg7+ Kf5 31. f7 $18 {Zhang,Z (2384) -Wen,Y (2497)/Jiangsu Wuxi/2008/}) 20. g4 b3 $132) 16... Nc6 17. Rfd1 h6 { Black has serious problems with piece coordination.} (17... O-O 18. Bc2 f5 19. exf6 gxf6 20. Bh6 Rf7 21. Be4 $16) (17... Rc8 18. Qg4 Nxe5 19. Rxc8+ Bxc8 20. Qxd4 Qxd4 21. Rxd4 f6 22. Be3 $44 {/+/= Although Black is for the time being a P up, the _|_ is difficult for him.}) 18. Be3 Rd8 19. Qg4 g6 20. a5 $1 { [%CAl Yb3a4] An important move, by freeing a4 for his B White further increases his pressure.} (20. Rc4 $143 a5 $132) 20... Qe7 (20... Qc7 21. Rxd4 Rxd4 22. Qxd4 Nxd4 23. Rxc7 Nxb3 24. Rxb7 $16) (20... Nxa5 $2 21. Rxd4 Nxb3 22. Rxd7 Rxd7 23. Re1 $18) 21. Bd2 Nxa5 (21... Kf8 22. Ba4 Nxe5 23. Qe2 $44 {/\} f6 24. f4 Nf7 25. Qe1 $1 $40) 22. Ba4+ Kf8 23. h4 $40 (23. Qe2 $2 Kg7 24. Qe1 Rc8 {/\} 25. Bxb4 Qg5 $17) 23... Kg7 (23... h5 24. Qg3 {[%CAl Rd2g5] /\Bg5+-}) 24. h5 Rc8 (24... Rhg8 25. hxg6 fxg6 26. Bxb4 $1 Qxb4 27. Rc7+ Kh8 28. Qf4 (28. Qxe6 $18) 28... Qf8 29. Rf7 $18) 25. hxg6 fxg6 26. Bc2 $16 ({Less convincing is } 26. Qxd4 $6 Rhd8 27. Qxb4 Qxb4 28. Bxb4 Rxd1+ 29. Rxd1 Rc4 $14) 26... Qf7 ( 26... Rxc2 27. Rxc2 Nc6 28. Rdc1 $16) 27. Bxb4 Nc6 28. Bd6 Rhd8 29. Be4 Na5 { Black wants to break the pin, but this provides only temporary relief.} (29... Kh7 30. b4 $1 (30. Rc5 $2 Nxe5 $15) 30... Kg7 31. Rc5 $16) (29... Rd7 30. Rd3 { /\} Rxd6 31. exd6 Ne5 32. Rxc8 Bxc8 33. Qe2 Nxd3 34. Bxd3 $16 Qf6 35. Bxa6 Bxa6 36. Qxa6 Qf4 37. g3 $18) 30. Bxb7 Nxb7 31. Qxd4 {[%csl Gd6] The powerful Bd6 paralyses Black's major pieces; once he takes it, a monster o^ appears.} a5 32. Rc3 Kh7 (32... Rxc3 33. bxc3 $16) 33. Rf3 Qg7 34. Rf6 Nxd6 (34... Re8 35. Qf4 Kg8 36. Qe4 Kh7 37. Bf8 $1 Rxf8 38. Rxg6 $1 $18) 35. exd6 Rf8 36. Rxe6 Qxd4 37. Rxd4 Rf7 38. d7 Rd8 39. Red6 $19 {[%csl Gd7] White plans to activate his K and create another o^. Black can prevent this only by quickly taking the Pd7, but this leads to a lost R_|_.} Kg7 40. f3 Re7 41. b3 Re3 42. Rc4 Kf7 43. Rc8 Ke7 44. Rxg6 Kxd7 45. Rc5 Ra8 46. Rb5 a4 47. bxa4 Rxa4 (47... Rxa4 48. Rxh6 $18) 1-0