[Event "FIDE World Cup 2021"] [Site "Sochi"] [Date "2021.07.13"] [Round "1.11"] [White "Ajibola, Olanrewaju"] [Black "Sarana, Alexey"] [Result "0-1"] [ECO "A48"] [WhiteElo "2302"] [BlackElo "2640"] [Annotator "Iccf GM Matjaz,Pirs"] [PlyCount "60"] [EventDate "2021.07.12"] [EventType "k.o."] [EventCountry "RUS"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 9,60,6,12,8,2,8,31,17,16,9,0,0,0,-14,-13,-10,0,-15,0,0,0,0,0,-38,-20, -142,-151,-147,-168,-160,-167,-253,-253,-238,-224,-288,-243,-357,-349,-362, -362,-364,-369,-376,-376,-366,-376,-372,-372,-416,-402,-29997,-29998]} 1. d4 Nf6 2. Nf3 c5 3. e3 g6 4. c3 Qc7 5. dxc5 Qxc5 6. b4 {A48: 1 d4 Nf6 2 Nf3 g6: Torre, London and Colle Systems.} Qb6 $5 {[%mdl 4] An interesting side line.} ( 6... Qc7 $5 {[#]} 7. Bb2 (7. Be2 Bg7 8. O-O O-O 9. Bb2 b6 (9... d5 10. Nbd2 Bg4 (10... Nfd7 11. Qb3 Nb6 12. Rac1 Nc6 13. c4 dxc4 14. Nxc4 Nxc4 15. Bxc4 Bxb2 16. Qxb2 Qb6 17. a3 Bg4 18. Ne5 Nxe5 19. Qxe5 Be6 20. Bxe6 fxe6 21. Qc7 Kf7 22. Rfd1 Rfd8 23. Qf4+ Kg8 24. h4 Rxd1+ 25. Rxd1 Rd8 26. Rc1 Rf8 27. Qc7 Kf7 28. Qf4+ Kg8 29. Qg5 Qd6 30. h5 Rf5 31. Qh6 e5 32. Rc8+ Kf7 33. Qxh7+ Ke6 34. Qg8+ Rf7 35. Qxg6+ Kd7 36. Qxf7 Kxc8 37. Qf5+ e6 38. Qc2+ Kd8 39. h6 {1-0 (39) Mukic,J (2379)-Topalovic,Z (2223) Kastav 2002}) 11. Rc1 Nfd7 12. Qb3 Nc6 13. c4 Bxb2 14. Qxb2 dxc4 15. Nxc4 Rab8 16. Rfd1 Bxf3 17. Bxf3 Nde5 18. Nxe5 Qxe5 19. Qxe5 Nxe5 20. Rc7 a5 21. bxa5 Nxf3+ 22. gxf3 e6 23. Rb1 Ra8 24. Rb5 Rfc8 25. Rxc8+ Rxc8 26. Rxb7 Rc1+ 27. Kg2 Rc2 28. a6 Rxa2 29. a7 Kg7 30. f4 h6 31. h4 Kf6 32. Kf3 Ra4 33. Rc7 Ra3 34. Ke4 Ra1 35. f3 Ra2 36. Kd4 e5+ 37. fxe5+ Ke6 38. f4 Ra1 39. Kc5 Ra2 40. Kb6 Rb2+ 41. Kc6 {1-0 (41) Matlak,M (2490)-Ciemniak, R (2435) Lubniewice 1994}) (9... d6 10. c4 a5 11. a3 axb4 12. axb4 Rxa1 13. Bxa1 Nc6 14. Qa4 Nd7 15. Nc3 Nb6 16. Qb3 Bg4 17. Nd5 Nxd5 18. Bxg7 Kxg7 19. cxd5 Ne5 20. Qb2 Bxf3 21. gxf3 Kg8 22. Rc1 Qd7 23. Qc3 Qh3 24. e4 Qh4 25. Qe3 g5 26. Kh1 Ng6 27. Rg1 f6 28. Rg4 Qh6 29. Rg1 Ra8 30. Qb6 Ra2 31. Qd8+ Kf7 32. Re1 Qh3 33. Kg1 Nh4 {0-1 (33) Cieslawska,K-Zielinska,D (2040) Krynica 1998}) 10. Nbd2 (10. a3 Bb7 11. Nbd2 d6 12. c4 Nbd7 13. Nd4 Rac8 14. Rc1 Qb8 15. Bf3 Ne5 (15... d5 16. b5 Ne5 17. Be2 dxc4 18. Nxc4 Nxc4 19. Bxc4 Qa8 20. f3 Nd5 21. Qb3 e6 22. Kh1 Rfd8 23. Rfd1 Bh6 24. e4 Rxc4 25. Rxc4 Ne3 26. Bc1 Nxc4 27. Bxh6 Qc8 28. h3 e5 29. Nc6 Bxc6 30. bxc6 Na5 31. Rxd8+ Qxd8 32. Qd5 Qxd5 33. exd5 Nc4 34. Bg5 Kf8 35. c7 Nd6 36. Bf6 Ke8 37. Bxe5 Nc8 38. Kg1 Kd7 39. Kf2 f6 40. Bxf6 Kxc7 41. Be5+ Kd7 42. Ke3 b5 43. Kd4 Nb6 44. f4 a6 45. g4 Nc4 46. a4 Nd2 47. axb5 axb5 48. Kc5 Ne4+ 49. Kxb5 Nf2 50. Bd4 Nxh3 51. Be3 {1-0 (51) Irizanin,R (2348)-Perunovic,M (2611) Kragujevac 2017}) 16. Bxb7 Qxb7 17. Qb3 Nc6 18. N2f3 Nxd4 19. Bxd4 Rc7 20. Rc2 Rfc8 21. Rfc1 Qe4 {1/2-1/2 (21) Grachev, B (2683)-Zvjaginsev,V (2659) Khanty-Mansiysk 2013}) 10... Bb7 11. c4 d6 12. Qb3 Nbd7 13. Rac1 (13. h3 Rac8 14. Rfc1 Qb8 15. Bc3 Rc7 16. a4 Rfc8 17. a5 e5 18. axb6 axb6 19. Bb2 Nf8 20. Rd1 Ne6 21. Nb1 Ne4 22. Nfd2 Nf6 23. Nc3 Bc6 24. Nd5 Rb7 25. b5 Bxd5 26. cxd5 Nc5 27. Qa2 e4 28. Nc4 Re7 29. Bd4 Ne8 30. Qb2 f5 31. Ra3 Rec7 32. Bxg7 Rxg7 33. Rda1 Rb7 34. Qd4 Qc7 35. g3 Nd7 36. Ra8 Rxa8 37. Rxa8 Rb8 38. Qa1 Rxa8 39. Qxa8 Kf7 40. Qc6 Ke7 41. g4 Qb8 42. Kg2 Nef6 43. Kg3 Ne8 44. g5 Qa7 45. h4 Qa1 46. Kg2 Qe1 47. Bf1 Qd1 48. Nxb6 Qg4+ 49. Kh1 Qxh4+ 50. Kg1 Qg4+ 51. Bg2 Qd1+ 52. Bf1 Qg4+ 53. Bg2 Qd1+ 54. Bf1 {1/2-1/2 (54) Vera Gonzalez Quevedo,R (2436)-Ramirez Alvarez,A (2589) Merida 2019}) 13... Rac8 14. Rfd1 (14. a3 Qb8 15. Qa2 Qa8 16. Qa1 Ne8 17. Bxg7 Nxg7 18. Nb3 h6 19. Rfd1 Ne6 20. Nbd4 Ng5 21. Nxg5 hxg5 22. Bf3 Ne5 23. Bxb7 Qxb7 24. c5 bxc5 25. bxc5 Rxc5 26. Rxc5 dxc5 27. Ne6 Nf3+ 28. gxf3 fxe6 29. Qe5 Qxf3 30. Qxe6+ Kh7 31. Rf1 Rf7 32. Qa6 Qg4+ 33. Kh1 Qe4+ 34. Kg1 e5 35. Qe6 Qf5 36. Qc4 e4 37. a4 Rb7 38. Rc1 Rb2 39. Rf1 Rb4 40. Qa6 Qd7 41. Qa5 Rc4 42. Rb1 Rc2 43. h3 Kh6 44. Rf1 Kh5 45. Qb5 Qxh3 46. Qe8 Qf5 47. Qh8+ Kg4 48. Qb8 Qf3 49. Qc8+ Kh4 50. Qh8+ Qh5 51. Qb8 Qg4+ 52. Kh2 Qh3+ 53. Kg1 Qg4+ 54. Kh2 Qf3 55. Qh8+ Kg4 56. Rg1+ Kf5 57. Qf8+ Ke6 58. Qe8+ Kf6 59. Qf8+ Ke6 60. Qe8+ {1/2-1/2 (60) Bartos,J (2222) -Szotkowski,J (2328) Tatranske Zruby 2015}) 14... Qb8 15. a3 (15. Nb1 e6 16. Nc3 d5 17. cxd5 Nxd5 18. Nb5 a6 19. Bxg7 Kxg7 20. Nc3 Kg8 21. Nxd5 Bxd5 22. Qa4 Ne5 23. Qxa6 Nxf3+ 24. Bxf3 Bxf3 25. gxf3 Rxc1 26. Rxc1 Qd6 27. Qc4 Ra8 28. b5 Qd2 29. Rc2 Qd1+ 30. Kg2 Rd8 31. Qb3 Qa1 32. Qa3 Qe5 33. Qe7 Ra8 34. Rc7 Qf5 35. Rb7 g5 36. h3 h5 {1-0 (36) Cifuentes Parada,R (2506)-Teran Alvarez,I (2404) Dos Hermanas 2003}) 15... Qa8 16. Bf1 Ne4 17. Bxg7 Kxg7 18. Nxe4 Bxe4 19. Nd4 a6 20. Qb2 Kg8 21. Ne2 Nf6 22. Nc3 Rfd8 23. Rd4 Bc6 24. h3 b5 25. cxb5 axb5 26. Nxb5 Qb7 27. Nc3 e5 28. Rdd1 d5 29. Ne2 Ba4 30. Rxc8 Rxc8 31. Rc1 Rxc1 32. Qxc1 Ne4 33. Qb2 Qc7 34. b5 Qb6 35. Nc3 Nxc3 36. Qxc3 d4 37. exd4 exd4 38. Qd2 Qc5 39. Qb4 Qxb4 40. axb4 Kf8 41. b6 Bc6 42. Ba6 d3 43. b7 {1-0 (43) Ter Sahakyan, S (2645)-Marinkovic,I (2432) Lichess.org INT 2021}) 7... Bg7 (7... Nc6 8. a3 Bg7 9. c4 O-O 10. Nc3 b6 11. Qc2 Bb7 12. Nd5 Nxd5 13. cxd5 Bxb2 14. Qxb2 Nd8 15. Rc1 Qd6 16. Bc4 f6 17. O-O Nf7 18. Nd4 Ne5 19. e4 f5 20. Nb5 Qf6 21. Qe2 fxe4 22. Qxe4 Nxc4 23. Rxc4 e6 24. Nc7 Rac8 25. Qc2 exd5 26. Nxd5 Qf7 27. Rxc8 Rxc8 28. Nc3 Qc4 29. Rc1 Qg4 30. f3 Bxf3 31. Qd2 Bb7 32. Rc2 {0-1 (32) Levin,F (2536)-Mueller,K (2517) Germany 2008}) 8. c4 (8. Nbd2 O-O 9. Rc1 b6 (9... a5 10. a3 Nc6 11. Be2 d6 12. O-O b6 13. Nd4 Bb7 14. Nb5 Qd8 15. Qb3 d5 16. Rfd1 e6 17. Nf3 Qe7 18. Nbd4 Rfc8 19. Nxc6 Bxc6 20. Ne5 Bb7 21. c4 axb4 22. axb4 dxc4 23. Bxc4 Bd5 24. Bxd5 Nxd5 25. Nc6 Qg5 26. Bxg7 Kxg7 27. b5 h5 28. Qb2+ Qf6 29. Qxf6+ Nxf6 30. h3 Ra2 31. Nd4 Rxc1 32. Rxc1 Rb2 33. Rc7 Kf8 34. Rb7 e5 35. Rxb6 exd4 36. Rxf6 dxe3 37. fxe3 Rxb5 38. Rd6 {1/2-1/2 (38) Gvetadze,S (2338) -Pogonina,N (2447) Batumi 2012}) 10. Be2 Bb7 11. O-O d6 12. c4 Nbd7 {1/2-1/2 (12) Cordova,E (2627)-Aroshidze,L (2520) Castell de Sant Ferran 2016} 13. Bd3 Rac8 14. Qb3 Qb8 15. Rfe1 Qa8 16. a3 Rfd8 17. Bf1 Nf8 18. Red1 Ne6 19. Nd4 Ng5 20. h4 Nge4 21. Nxe4 Bxe4 22. Ne2 Bb7 23. Nc3 h6 24. Qa2 g5 25. hxg5 hxg5 26. Qb1 g4 27. Qf5 g3 28. f3 Bh6 29. Re1 Kg7 30. Qh3 Rg8 31. Qxg3+ Kf8 32. Qh3 Bg5 33. Kf2 Rd8 34. Red1 Bc8 35. Qh1 e6 36. Bd3 Ke7 37. Ne4 Rh8 38. Qf1 Rdg8 39. Nxg5 Rxg5 40. Bxf6+ Kxf6 41. Be4 Bb7 42. Bxb7 Qxb7 43. Qd3 Rh2 44. Qd4+ Kg6 45. Rg1 Qb8 46. Qe4+ Kg7 47. Qf4 Rhh5 48. Rh1 Rf5 49. Qd4+ e5 50. Qe4 Rfg5 51. Rxh5 Rxh5 52. Qg4+ Kh6 53. Qd7 Kg7 54. Qg4+ Kh6 55. Qd7 Kg7 56. Rd1 Rh6 57. b5 Re6 58. Rh1 Rg6 59. Rh5 Rf6 60. Qe7 Qc8 61. Rg5+ Rg6 62. Rxg6+ Kxg6 63. Qxd6+ f6 64. Qc6 Qf8 65. Qe4+ Kh6 66. Qd3 Qe7 67. Qb3 Qd7 68. Ke2 Qg7 69. Kf2 Qd7 70. Qc3 Qd1 71. c5 bxc5 72. Qxc5 Qd2+ 73. Kg3 Kg6 74. Qb4 Qe2 75. a4 Kf7 76. a5 Qxe3 77. b6 axb6 78. axb6 e4 79. b7 exf3 80. gxf3 Qg1+ 81. Kh3 Qh1+ 82. Kg3 Qg1+ 83. Kf4 Qh2+ 84. Ke3 Qg1+ 85. Kd2 Qf2+ 86. Kc1 Qf1+ 87. Kc2 Qe2+ 88. Qd2 Qc4+ 89. Qc3 Qe2+ 90. Kc1 Qf1+ 91. Kb2 Qe2+ 92. Qc2 Qe5+ 93. Qc3 Qe2+ 94. Kc1 Qf1+ 95. Kb2 Qe2+ 96. Kc1 Qf1+ {1/2-1/2 (96) Matlak,M (2465)-Oliwa,M (2405) Warsaw 1995 EXT 1999 [Bulletin]}) (8. Be2 O-O {1/2-1/2 (8) Matlak,M (2445) -Vokac,M (2470) Ceske Budejovice 1996}) (8. Qb3 O-O 9. Nbd2 Nc6 10. c4 d6 11. h3 Be6 12. Nd4 Nxd4 13. exd4 b5 14. d5 bxc4 15. Bxc4 Bf5 16. O-O Ne4 17. Bxg7 Nxd2 18. Qc3 Qxc4 19. Qxc4 Nxc4 20. Bxf8 Kxf8 21. Rac1 Nb6 22. Rfd1 Be4 23. a4 Nxa4 24. f3 Bf5 25. g4 Bd7 26. Rc7 Bb5 27. Re1 Re8 28. Rxa7 Nc3 29. Ra5 Rb8 30. Kf2 Nxd5 31. h4 Nxb4 32. Kg3 Nc6 33. Ra3 Rb7 34. h5 gxh5 35. gxh5 Rd7 36. h6 f6 37. Kf4 e5+ 38. Kf5 Nd4+ 39. Kg4 Bc6 40. Rb1 Bxf3+ 41. Kg3 Rb7 42. Ra8+ Kf7 43. Rxb7+ Bxb7 44. Ra7 Kg6 45. Rxb7 Nf5+ 46. Kf3 Nxh6 47. Ke4 Nf5 48. Kd5 h5 49. Ke6 Nd4+ 50. Kxd6 Kg5 51. Kd5 h4 52. Ke4 h3 53. Rh7 Kg4 54. Rh6 Kg3 55. Rxf6 h2 56. Rg6+ Kf2 57. Rh6 Kg2 58. Kxe5 {1/2-1/2 (58) Saric,H (1789)-Bonca,P (1599) Croatia 2010}) 8... O-O (8... a5 9. b5 O-O 10. Nc3 d6 11. Rc1 Nbd7 12. Nd5 Nxd5 13. cxd5 Qb6 14. Bxg7 Kxg7 15. Qd4+ Qxd4 16. Nxd4 Nc5 17. f3 Bd7 18. Kd2 f5 19. g3 Rfc8 20. Bg2 a4 21. Rc3 Kf6 22. Rhc1 a3 23. f4 Ra4 24. Rb1 Rca8 25. b6 R4a6 26. Rb4 Ra4 27. Rb1 R4a6 28. Bf3 h6 29. Rb4 Ra4 30. Rb1 R4a6 31. Rb4 Ra4 32. Rb1 g5 33. Nc6 Be8 34. Nb4 Bf7 35. Nd3 Ne4+ 36. Bxe4 fxe4 37. fxg5+ hxg5 38. Nb4 R8a5 39. Rc7 Rb5 40. Rf1+ Kg6 41. Rxe7 Raxb4 42. Rfxf7 Rb2+ 43. Kc1 Rb1+ 44. Kc2 R5b2+ {0-1 (44) Gelashvili,T (2563)-Fier,A (2569) Saint Louis 2017}) ( 8... b6 9. Nc3 Bb7 10. Rc1 O-O 11. Be2 d6 12. Nd5 Bxd5 13. cxd5 Qb7 14. O-O Nxd5 15. Bxg7 Kxg7 16. Nd4 Nf6 17. Bf3 d5 18. Nb5 Na6 19. Qd4 Rac8 20. g4 h6 21. h4 Qd7 22. Nxa7 Qxa7 23. g5 hxg5 24. hxg5 Nc7 25. gxf6+ exf6 26. Rc6 Ne6 27. Qxd5 Rxc6 28. Qxc6 Qxa2 29. Qxb6 Qb2 30. b5 {1/2-1/2 (30) Ernst,S (2540) -Sebastian,D (2454) Hamburg 2016}) 9. Nbd2 (9. Nc3 a6 10. Rc1 d6 11. Be2 Nbd7 12. O-O b6 13. Nd5 Qd8 14. Qb3 Bb7 15. Rfd1 Rc8 16. Nxf6+ Bxf6 17. c5 Bxb2 18. Qxb2 bxc5 19. bxc5 Bxf3 20. Bxf3 Nxc5 21. h4 h6 {1/2-1/2 (21) Ortega,L (2494) -Trauth,M (2195) Arco 2001}) 9... d6 10. Be2 a5 11. a3 Na6 12. Qb3 Qb6 13. Bc3 e5 14. O-O axb4 15. axb4 Be6 16. Rab1 h6 17. Qb2 Qc7 18. c5 Nd5 19. Ne4 Nxc3 20. Qxc3 Bf5 21. Nxd6 Bxb1 22. Rxb1 b6 23. Rc1 bxc5 24. bxc5 Kh7 25. e4 Rfd8 26. Bxa6 Rxa6 27. h3 Rc6 28. Nb5 Qe7 29. Qa3 Bf8 30. Nd6 Qe6 31. Rd1 Bxd6 32. cxd6 Rcxd6 33. Rxd6 Rxd6 34. Qc3 f6 35. Qc7+ Qd7 36. Qb8 h5 37. h4 Rc6 38. Qf8 Qc7 39. Kh2 Rd6 40. Qe8 Rd8 41. Qe6 Kg7 42. Qb3 Rd7 43. Qe6 Qb7 44. Qe8 Re7 45. Qd8 Rf7 46. Qd3 Rd7 47. Qc4 Qb6 48. Kg3 Ra7 49. Qc8 Qb7 50. Qc4 Qd7 51. Kh2 Rc7 52. Qb4 Rc2 53. Qb6 Qc7 54. Qe3 Qc5 55. Qxc5 Rxc5 56. Ng1 Rc4 57. f3 Rc2 58. Kg3 Kf7 59. Nh3 Ke6 60. Nf2 f5 61. exf5+ gxf5 62. Nh3 Kd5 63. Kh2 Kd4 64. Ng5 e4 65. fxe4 fxe4 66. Kg3 Kd3 67. Ne6 e3 68. Nf4+ Kd2 69. Kf3 Rc8 70. g4 hxg4+ 71. Kxg4 Rc4 72. h5 e2 {0-1 (72) Galkin,A (2611)-Ponkratov,P (2632) Moscow 2019 }) 7. Bb2 {[%csl Gb2,Rb7,Gc3,Rc6,Gd4,Rd5,Ge3,Re6,Gf2,Rf7][%CAl Gd4e5,Gf6g7, Gf6g5,Ge5f4,Gd4c5,Gb6a7,Gb6a5,Gc5b4,Rd5e4,Rf3g2,Rf3g4,Re4f5,Rf6e4,Rg6f5]} Bg7 8. Nbd2 {[#] White is slightly better.} O-O $146 ({Predecessor:} 8... d5 9. a3 a5 10. c4 axb4 11. Bd4 Qc7 12. Be5 Qd8 13. axb4 Rxa1 14. Qxa1 Nbd7 {1/2-1/2 (34) Matlak,M (2485)-Gdanski,J (2543) Wroclaw 2011}) 9. a3 d6 10. c4 a5 11. Bd4 Qc7 12. Be2 e5 13. Bc3 Bf5 14. Qb3 Nc6 15. O-O Rfc8 16. c5 a4 17. cxd6 (17. Qa2 $11) 17... axb3 $17 ({Stronger than} 17... Qxd6 18. Qd1 $11) 18. dxc7 {[#]} Nd5 $1 $36 {[%CAl Rd5c3][%mdl 2112] Double Attack. White is under strong pressure.} 19. Bb2 {[#]} e4 $1 {[%mdl 64] Discovered Attack} 20. Nd4 (20. Bxg7 {was necessary.} Kxg7 21. Nxb3 exf3 22. Bxf3) 20... Nxd4 $19 21. exd4 Rxc7 {...Rc2 is the strong threat.} 22. Bc4 Nf4 23. Rfc1 (23. Rac1 $142) 23... Rac8 24. Kf1 Bh6 25. d5 Nd3 26. Bxd3 exd3 ({Weaker is} 26... Bxd2 27. Rxc7 Rxc7 28. d6 $15) 27. Rxc7 Rxc7 28. Nxb3 d2 29. Ke2 Re7+ 30. Kf1 (30. Kf3 $19 Be4+ {[%mdl 64] Double Attack} 31. Kg3 Bxd5 32. Nxd2 Bxd2 33. Rd1) 30... Bd3+ {Weighted Error Value: White=0.50/Black=0.04} 0-1