[Site "Yahoo Chess Game"] [Date "2001.12.15"] [White "doc_africa"] [Black "Kvuzon"] [Result "1/2-1/2"] [Event "?"] [Round "?"] [TimeControl "20m/G"] [Annotator "Kvuzon"] 1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 Nf6 5. d4 exd4 6. cxd4 Bb4+ 7. Bd2 Bxd2+ 8. Nbxd2 d6 { d5 is the (better) bookmove. I checked on chesslab if anyone played d6 before. The score is: 15 white wins, 9 draws and 6 black wins.} 9. O-O O-O 10. d5 Ne5 11. Nxe5 dxe5 12. Rc1 Bd7 13. Qc2 { Qb3 is another possibility. Example: 13. Qb3 Rb8 14. Qa3 Now black have two possibilities Ra8 and a6, I haven't found much that differ between them. Examples: 14... a6 15. f3 c6 If black advances he will lose the pawn eventually. 16. dxc6 Bxc6 17. Nb3 Re8 18. Nc5 Qe7 or 14... Ra8 15. f3 c6 16. dxc6 Bxc6 17. Nb3 Re8 18. Nc5 b6 19. Nd3 Bb7} 13... Qe7 { 13... c5 Would have been better. Example: 14. Bb3 Rc8 15. a4 b4 16. axb5 Bxb5 17. Rfd1 Ne8 18. Nc4 Bxc4 19. Qxd4 Nd6 I doubt any side can make progress. 18. Ba4 a6 19. Bxb5 axb5 Black is better.} 14. Rfd1 Rfc8 { The other rook can protect the other pawns.} 15. Nf3 Bg4 { If I remember correctly I was worried about variants like Ng5 Nxf7 followed by d6+ or attacks at my e-pawn. I decided to exchange my bishop for the knight. I hoped that my knight would be better than the white bishop.} 16. Be2 Bxf3 17. Bxf3 Ne8 { 17... Qd6 doesn't work. 18. Qb3 Qb6 19. Qxb6 axb6 20. a3 Ra4 21. Re1 Ne8 22. Bd1 Rd4 23. Bb3 c6 23. Rcd1 White is better. And 18... Rb8 is worse.} 18. Rd3 { 18. Bg4 Rd8 19. Qc5 Rd6 20. Rc3 Rad8 21. Qxa7 c6 22. Rcd3 Nf6 23. Bf3 cxd5 I believe black is better. 21. Rcd3 c6 22. Bf3 Qc7 23. g3 Cxd5 24. Qxc7 Nxc7 25. exd5 f5 26. Bg2 e4 Black is better. 22. Be2 Nf6 23. dxc6 Nxe4 24. Rxd6 Nxd6 (... Rxd6 25 cxb7...) 25. cxb7 White wins. 22... cxd5 23. Rxd5 Rxd5 24.Rxd5 Qxc5 25. Rxc5 White have the advantage here.} 18... c5 { 18... Nd6 (a blockade) 19. Bg4 Rd8 20. Qxc7 Qg5 21. f3 (not 21. Bf3 Rac8) 21 ... Nxe4 22. fxe4 Qxg4 23. Qxb7 Qxe4 24. Rcd1 Looks better for white. 21... g6 22. Re1 f5 23. exf5 Rac8 24. Qa5 gxf5 25 Bh3 A serious mess, maybe a white win. 20... Qxc7 21. Rxc7 Nxe4 Should be enough for a draw. 19. Rc3 Nb5 20. Rc5 20... Nd4 21. Rxc7 Rxc7 22. Qxc7 Looks good to white. 20... a6 21. Bg4 Re8 22. a4 Nd4 23. Qc3 Qh4 24. Bf3 c6 Black should get away with a draw here. 21. g3 Nd4 22. Qc3 c6 About equal.} 19. Rc3 b6 { 19... Nd6 20. Rxc5 Rxc5 21. Qxc5 Qd8 with the idea Rc8, example: 22. Qe3 Rc8 23. g3 Rxc1+ 24. Qxc1 Qc8 Black should comfortably draw here. Pb6 and Nd6 blocks the queenside for the black king and the black squares on the kingside should be easy to defend with or without queens.} 20. b4 c4 21. Bg4 Rc7 22. Rxc4 Rxc4 23. Qxc4 Nd6 24. Qc6 { This is a tempoloss 24. Qc7 immediately would make it harder for black. 24... Qg5 25. f3 Rd8 26. Re1 Qd2 equal 26. Rd1 Nb5 27. Qc4 27... Nd6 28. Qe2 The black queen looks as if it were a little out of play, what plan should black have now? 27... Nd4 28. Qc8+ Qd8 29. Qxd8+ Rxd8 30. Rc7 White is better. 24... Qxc7 25. Rxc7 Nxe4 26. Bc8 h6 27. Bb7 Rd8 28. Bc6 a6 29. Bb7 Nf6 Doubtful if white can win. 26. Bd7 a5 27. bxa5 bxa5 28. Bc6 Rb8 29. h3 h6 30. Ra7 Black is in serious trouble. 26. Bf5 Nf6 27. d6 Rd8 28. d7 Kf8 29. Rxa7 Ke7 30. Rb7 Nxd7 Might be a draw. Of course other possibilities exist after 24. Qc7 Qxc7 25. Rxc7 Nxe4 Black might be able to keep the material about equal due to his active knight.} 24... Rd8 25. f3 { Maybe it is the best move but it closes in the bishop. Black get an opportunity to play on the dark squares. 25. Re1 Qg5 26. Bf3 Qd2 and Qxb4 25. Qc2 Qg5 26. Bh3 Nxe4 26. f3 Nxe4 25. Qc7 Qg5 26. Rc6 Nb5 27. Qxd8+ as in the game. A clear draw. See later comments. 26. Re1 Qd2 26. f3 f5 27. Bxf5 Nxf5 28. exf5 Rxd5 29. f4 Qxf5 30. Qb8+ Kf7 31. fxe5 Difficult for black. 25. Qc7 Qxc7 26. Rxc7 Nxe4 Most likely a draw. Examples: 27. Bd1 g6 28. Rxa7 Nc3 29. Bb3 Nxd5 30. Bxd5 Rxd5 27. Bd7 Nf6 28. Bc6 Kf8 29. Rxa7 Nxd5 30. Bxd5 Rxd5} 25... g6 { The idea was to close in the bishop real good.} 26. Qc7 Qg5 { 26... Qxc7 27. Rxc7 f5 28. Bh3 a5 29. bxa5 bxa5 30. Ra7 fxe4 31. Rxa5 exf3 Is difficult for black. 28... fxe4 29. fxe4 Nxe4 30. Rxa7 Nc3 31. Be6+ Kf8 32. Rb7 Nxd5 33. Bxd5 Rxd5 Probably a draw. 28. exf5 gxf5 29. Bh3 Nb5 30. Re7 Rxd5 31. Bxf5 Kf8 32. Rxh7 Rd1+ 33. Kf2 Rd2+ 34. Kg3 Rxa2 35. Bd3 Nd4 36. h4 Rb2 37. Rxa7 Rxb4 Seems to be very difficult for black. 28. exf5 Nxf5 29. Bxf5 gxf5 30. Rxa7 Rxd5 31. Rb7 Rd1+ 32. Kf2 Rd2+ 33. Kg3 Rxa2 34. Rxb6 f4+ 35. Kh3 Kf7 36. Rb7+ Kg6 37. Re7 Rb2 38. Rxe5 Rxb4 39. Kg4 Rb2 40. g3 fxg3 41. hxg3 Difficult for black, might be a draw.} 27. Bh3 Nb5 { 27... Qe3+ 28. Kh1 Ne8 29. Qc3 Qxc3 30. Rxc3 Nd6 31. Rc7 Is difficult for black. 27... f5 28. Rd1 b5 29. exf5 gxf5 30. Qxa7 Difficult for black.} 28. Qxd8+ { 28. Qc4 Nd4 Idea: ... Qxc1 and ... Ne2+ or ...Nxf3 29. Rf1 Qe3+ 30. Kh1 Qe2 31. Qxe2 Nxe2 32. Rd1 Nd4 33. f4 f6 34. fxe5 fxe5 35. Rc1 Very difficult for black. 28. Qc4 Nd6 29. Qf1 f5 30. Rc7 Qd2 31. Qb1 fxe4 32. Be6+ Kh8 33. fxe4 Qe3+ 34. Kh1 Nxe4 Black have good counterplay. 28. Qc6 Nd4 Black wins.} 28... Qxd8 29. Rc8 Qxc8 30. Bxc8 { The game is absolutely drawn now. The knight shall stand on d6. With the pawn on b6 the queenside is blocked for the black king. One pawn shall stand on h6. This gives one entry point for the white king, h5. This entry will the black king stop by standing on g7. The knight can go from/to d6 if white tries the h5 route. The bishop cannot cover all possible squares for the knight. If white tries anything else then it's the king that moves from/to g7. The other black pawns shall stand on g5 and f6.} 30... Kf8 31. Kf2 Ke7 32. Ke3 Nc3 { I wrongly thought it necessary to simplify the position.} 33. a3 Nb1 34. a4 Nc3 35. a5 Na4 { ...Nb5 followed by ...Nd6} 36. axb6 Nxb6 37. Ba6 g5 { I decided to place my pawns on dark squares since I'm defending against the light squared bishop. If you are attacking then they should stand on the bishop's colour.} 38. Bb5 h6 39. g3 f6 40. Bc6 { After this move the defence is much easier. 40. Kd3 Kd6 41. Bc6 41... Nc8 42. Kc4 Nb6+ 43. Kb5 h5 44. Ka6 Nc8 45 Bb7 White wins. 41... Kc7 42. Be8 Nc8 Can anyone find a white win here? The black king is prepared to go to b6 or the kingside depending on what white does.} 40... a5 41. bxa5 { If 41. b5 then the white king can never enter the f-file as the a-pawn promotes.} 41... Nc4+ 42. Kd3 Nxa5 43. Bb5 { 43. Kc3 Kd6 44.Kb4 Nxc6 45. dxc6 Kxc6 Is a draw since white kan never force black from the e6 square. 43. Ba8 Kd6 44. Kc3 Kc5 45. d6 Kxd6 46 Kb4 Nc6+ Draw. 45. h3 Nc4 46. Bb7 Nd6 47. Ba6 Kb6 The black king moves to e7 with a draw. } 43... Kd6 { ... Nb7 and ...Nd6 is a draw. The king guards e6 from d7. If black moves the king to c7 white can win. An example: 44. Kc3 Nb7 45. Kb4 Kc7 46. Ba4 Nd6 47. Kc5 Nf7 48. d6+ Nxd6 49 Kd5 And so on.} 44. Kc3 Nb7 45. Ba6 Nd8 46. Kc4 Nf7 47. Kb4 Nd8 48. h4 { I thought this to be a mistake by white. It isolates the h-pawn and the bishop cannot help it promote. In this game, however, it's irrelevant.} 48... gxh4 49. gxh4 Nf7 50. Bb5 Nh8 { A move that immediately loses the game. But there are others more interesting. Here they are complete with drawing subvariants: 50... f5 51. Bd3 fxe4 52. fxe4 Ke7 53. Kc5 Nd6 Draws 51. Be8 fxe4 52. Bxf7 exf3 53. Bh5 f2 54. Be2 Kxd5 Black cannot lose. 52. fxe4 Nd8 53. Kb5 53... Nb7 54. Kb6 Nc5 55. Bg6 Nd7+ 56. Kb7 Nf6 57. Kc8 Nxd5 58. exd5 Kxd5 59 Kd7 Is a white win. 55... Nd3 56. Kb7 Kd7 57. Bf5+ Kd6 58. Kc8 Nb4 59. Kd8 White wins. 53... Ke7 Followed by ...Nf7 or ...Nb7 and ... Nd6 is a draw. 50... h5 51. Be8 Nh6 52. Bxh5 f5 53. Bg6 fxe4 54. fxe4 Ng4 55. Kb5 Nf6 56. Kb6 Nxd5 Draw. 52. Bg6 f5 53. Kc4 fxe4 54. fxe4 Ng8 55. Bxh5 Nf6 56. Bf3 Wins. 50... h5 51. Be2 Nh6 52. f4 exf4 53. Bxh5 f5 54. Bf3 fxe4 55 Bxe4 Wins. 52... f5 Draws.} 51. Be8 Ke7 52. Bh5 Nf7 53. Bxf7 Kxf7 54. Kc5 Ke8 55. Kd6 Kf7 56. Kd7 Kg6 57. Ke6 Kh5 58. Kxf6 Kxh4 59. Kxe5 h5 60. d6 Kg3 61. d7 h4 62. d8=Q h3 63. Qg5+ Kf2 64. Kf5 h2 65. Qh4+ Kg1 66. Qxh2+ Kxh2 67. e5 Kg1 68. e6 Kf2 69. e7 Kxf3 1/2-1/2