| ECO A06 in 2007 play it! program defeats black's program by checkmate in 85 moves | 1. Nf3 d5 2. d4 a5 3. Nc3 Nf6 4. Bg5 c6 5. e3 h6 6. Bf4 g5 7. Bg3 Qb6 8. Na4 Qa7 9. Bd3 Bg4 10. h3 Bxf3 11. Qxf3 Nbd7 12. O-O-O e6 13. Kb1 O-O-O 14. c4 dxc4 15. Bxc4 Bb4 16. Rc1 Rde8 17. a3 Be7 18. Rc3 h5 19. Rb3 g4 20. Qf4 b5 21. Bxb5 cxb5 22. Rc1+ Kd8 23. Qc7+ Qxc7 24. Bxc7+ Kc8 25. Rxb5 Ne4 26. Bxa5+ Ndc5 27. f4 gxf3 28. gxf3 e5 29. fxe4 exd4 30. exd4 Kd7 31. Nxc5+ Bxc5 32. Rb7+ Kc8 33. Rxf7 Re6 34. Rxc5+ Kb8 35. Bc7+ Ka8 36. Be5 Rxe5 37. dxe5 Re8 38. e6 h4 39. Rd7 Kb8 40. e7 Rh8 41. Rb5+ Ka8 42. Rd4 Rf8 43. Ra4# |
| ECO A06 in 2007 play it! program defeats black's program in 71 moves | 1. Nf3 d5 2. d4 a5 3. Nc3 Nf6 4. Bg5 c6 5. e3 h6 6. Bf4 g5 7. Bg3 Qb6 8. Na4 Qd8 9. h4 Ne4 10. Bxb8 Rxb8 11. hxg5 b5 12. Nc5 Nxc5 13. dxc5 Bg7 14. Nd4 Bd7 15. gxh6 Rxh6 16. Rxh6 Bxh6 17. Qh5 Bg7 18. Bd3 e5 19. Nf5 Bf8 20. Qh8 Bxf5 21. Bxf5 Qe7 22. O-O-O e4 23. Rh1 Rb7 24. Rh5 Qxc5 25. Bxe4 Re7 26. Bd3 Qb4 27. c3 Qg4 28. Re5 Qb4 29. cxb4 axb4 30. Rxe7+ Kxe7 31. Qe5+ Kd7 32. Bf5+ Kd8 33. Qf6+ Ke8 34. g4 d4 35. Qxc6+ Ke7 36. Qd7+ |
| ECO A06 in 2007 play it! program defeats black's program by checkmate in 79 moves | 1. Nf3 d5 2. d4 a5 3. Nc3 Nf6 4. Bg5 c6 5. e3 h6 6. Bf4 g5 7. Bg3 Qb6 8. Na4 Qd8 9. Bd3 Bg4 10. h3 Bxf3 11. Qxf3 e6 12. a3 h5 13. O-O-O Nbd7 14. Nc3 Qb6 15. Rhe1 O-O-O 16. Na4 Qa7 17. Kb1 Be7 18. h4 Rhg8 19. hxg5 Nc5 20. gxf6 Nxa4 21. fxe7 Rde8 22. Qxf7 Kd7 23. Qf4 Rxg3 24. Qxg3 Qb6 25. b3 Nc3+ 26. Kb2 Nxd1+ 27. Rxd1 Rxe7 28. Bg6 Qc7 29. Qh3 a4 30. Qxh5 c5 31. dxc5 axb3 32. cxb3 Qxc5 33. Rc1 Qa5 34. Qe5 Qd8 35. e4 Qa5 36. exd5 exd5 37. Bf5+ Re6 38. Qxe6+ Kd8 39. Qd6+ Ke8 40. Bg6# |
| ECO A06 in 2007 play it! program defeats black's program by checkmate in 83 moves | 1. Nf3 d5 2. d4 a5 3. Nc3 Nf6 4. Bf4 Nh5 5. Bg5 h6 6. Bd2 Nc6 7. e3 Nf6 8. Bb5 Bd7 9. O-O e6 10. Re1 Ne4 11. Nxe4 dxe4 12. Bxc6 Bxc6 13. Ne5 Qh4 14. Nxc6 bxc6 15. b3 Bd6 16. h3 a4 17. c4 c5 18. dxc5 Be5 19. Rb1 axb3 20. Qxb3 O-O 21. Red1 Ra6 22. a4 f5 23. Be1 Qh5 24. Rd7 Qg6 25. a5 Rfa8 26. Bc3 Bxc3 27. Qxc3 Rxa5 28. Rxc7 Ra3 29. Qe5 Rxe3 30. fxe3 Ra2 31. Rb2 Rxb2 32. Rc8+ Kh7 33. Qxb2 h5 34. c6 Qh6 35. Qe2 e5 36. c7 Qd6 37. Qxh5+ Qh6 38. Rh8+ Kxh8 39. c8=Q+ Kh7 40. Qcxf5+ g6 41. Qfxg6+ Kh8 42. Qhxh6# |
| ECO A06 in 2007 play it! program defeats black's program by checkmate in 69 moves | 1. Nf3 d5 2. d4 a5 3. Nc3 Nf6 4. Bg5 c6 5. e3 h6 6. Bf4 g5 7. Bg3 Bg7 8. Be2 Bf5 9. b3 Nbd7 10. h4 g4 11. Nd2 O-O 12. O-O Re8 13. Kh1 e5 14. Ndb1 exd4 15. exd4 b6 16. Nd2 a4 17. Rc1 axb3 18. cxb3 Re6 19. a4 Ra7 20. Rg1 Qe7 21. Kh2 Qb4 22. Nf1 Nh5 23. Bxg4 Bxg4 24. Qxg4 Nxg3 25. Nxg3 Qxd4 26. f4 Rg6 27. Qf5 Qe3 28. Nce2 Qxb3 29. Nh5 Rxg2+ 30. Rxg2 Kf8 31. Rxg7 d4 32. Nxd4 Qa2+ 33. Rc2 f6 34. Ne6+ Ke8 35. Qg6# |
| ECO A06 in 2007 play it! program defeats black's program in 89 moves | 1. Nf3 d5 2. d4 a5 3. Nc3 Nf6 4. Bg5 c6 5. e3 h6 6. Bf4 g5 7. Bg3 Qb6 8. Na4 Qa7 9. h4 gxh4 10. Rxh4 Bg4 11. Be2 Nbd7 12. Nc3 e6 13. a3 Rg8 14. Bf4 Bh5 15. Bg3 Bg4 16. Bc7 Rc8 17. Bf4 Bf5 18. g3 Rg4 19. Rh2 Rg8 20. Rh4 Rg4 21. Qd2 Rxh4 22. Nxh4 Ne4 23. Nxe4 Bxe4 24. f3 Bh7 25. O-O-O c5 26. c3 Qb6 27. Bd3 Bxd3 28. Qxd3 Bd6 29. Qh7 Bxf4 30. gxf4 cxd4 31. exd4 Rc6 32. Qxh6 Nf8 33. Qf6 Nd7 34. Qh8+ Nf8 35. f5 Qb3 36. Rd2 Qa2 37. fxe6 Rxe6 38. Ng2 Qa1+ 39. Kc2 a4 40. Qh2 Nd7 41. Nf4 Re3 42. Nxd5 Nc5 43. Qb8+ Kd7 44. Qc7+ Ke6 45. Qe7+ |
| ECO A06 in 2007 play it! program defeats black's program by checkmate in 137 moves | 1. Nf3 d5 2. d4 a5 3. Nc3 Nf6 4. Bg5 c6 5. e3 h6 6. Bf4 g5 7. Bg3 Qb6 8. Na4 Qa7 9. h4 gxh4 10. Rxh4 Bg4 11. Be2 Nbd7 12. Nc3 e6 13. a3 Rg8 14. Bf4 Bh5 15. g3 Qb6 16. b3 Qd8 17. Ne5 Bxe2 18. Qxe2 Nxe5 19. Bxe5 Nd7 20. Rh5 Nxe5 21. Rxe5 Rg5 22. Rxg5 hxg5 23. Qd3 Qf6 24. e4 Qg6 25. f3 g4 26. f4 Qh7 27. Kd2 Qh2+ 28. Ne2 dxe4 29. Qxe4 a4 30. b4 O-O-O 31. c3 Bd6 32. Rh1 Qf2 33. Rh7 Rd7 34. Rh8+ Kc7 35. Ra8 Qf3 36. Qh7 Kb6 37. Qc2 Kc7 38. Qxa4 Qd5 39. c4 Bxf4+ 40. gxf4 Qxc4 41. Qa5+ Kd6 42. Qe5+ Ke7 43. Qh8 Qd5 44. Qf8+ Kf6 45. Qh6+ Ke7 46. Qh4+ Kd6 47. Qxg4 Qa2+ 48. Ke1 f5 49. Qg8 Qb1+ 50. Kf2 Kc7 51. Qb8+ Kb6 52. Qa7+ Kc7 53. Qa5+ b6 54. Qa7+ Kd6 55. Qb8+ Rc7 56. Qf8+ Kd5 57. Nc3+ Kc4 58. Nxb1 Rh7 59. Nd2+ Kd3 60. Nf3 Rh1 61. Qd6 Rc1 62. Qxe6 Rc2+ 63. Kg3 Rb2 64. Ne5+ Kc3 65. Qxc6+ Kd2 66. Qg2+ Ke1 67. Nf3+ Kd1 68. Qxb2 b5 69. Qd2# |
| ECO A06 in 2007 play it! program defeats black's program by checkmate in 65 moves | 1. Nf3 d5 2. d4 a5 3. Nc3 Nf6 4. Bg5 c6 5. e3 h6 6. Bf4 g5 7. Bg3 Qb6 8. Na4 Qa7 9. h4 gxh4 10. Rxh4 Bg4 11. Be2 Nbd7 12. Nc3 e6 13. a3 Rg8 14. Bc7 b6 15. Bf4 Bf5 16. g3 Rg4 17. Rh2 Rxf4 18. gxf4 c5 19. Bb5 Bg4 20. dxc5 bxc5 21. Rg2 Be7 22. Rc1 h5 23. Rg1 Qb7 24. Rxg4 Nxg4 25. Ne5 Nxe5 26. fxe5 h4 27. Qh5 Qb8 28. Rd1 Qd8 29. Nxd5 Bf6 30. exf6 Qxf6 31. Nxf6+ Ke7 32. Rxd7+ Kf8 33. Rxf7# |
| ECO A06 in 2007 play it! program defeats black's program by checkmate in 83 moves | 1. Nf3 d5 2. d4 a5 3. Nc3 Nf6 4. Bg5 c6 5. e3 h6 6. Bf4 g5 7. Bg3 Qb6 8. Na4 Qd8 9. Bd3 Bg4 10. h3 Bxf3 11. Qxf3 Nbd7 12. O-O-O e6 13. a3 c5 14. dxc5 Rc8 15. Kb1 Bxc5 16. Nxc5 Rxc5 17. c3 e5 18. Bf5 e4 19. Qe2 Rc6 20. Qb5 Qb6 21. Rxd5 Nxd5 22. Qxd5 Nf6 23. Qe5+ Kf8 24. h4 Qxe3 25. fxe3 Rg8 26. Rd1 b6 27. Qb5 Rc5 28. Bd6+ Kg7 29. Bxc5 bxc5 30. hxg5 hxg5 31. Qxc5 Rh8 32. Qxa5 g4 33. Bxg4 Rh6 34. Qe5 Kf8 35. Bf5 Kg7 36. Qg3+ Rg6 37. Bxg6 fxg6 38. Qc7+ Nd7 39. Rxd7+ Kf6 40. Qf4+ Ke6 41. Qf7+ Ke5 42. Rd5# |
| ECO A06 in 2007 play it! program defeats black's program by checkmate in 103 moves | 1. Nf3 d5 2. d4 a5 3. Nc3 Nf6 4. Bg5 c6 5. e3 h6 6. Bf4 g5 7. Bg3 Bg7 8. h3 Bf5 9. Bd3 Bxd3 10. Qxd3 Nh5 11. Bh2 Nd7 12. O-O-O Nhf6 13. h4 Ng4 14. Bg3 e6 15. hxg5 Bxd4 16. Qxd4 Ngf6 17. gxf6 Qxf6 18. Qxf6 Nxf6 19. Be5 Ke7 20. Rh4 Rh7 21. b3 Rg8 22. Bxf6+ Kxf6 23. Rf4+ Ke7 24. g3 f6 25. Ra4 b6 26. e4 Rhg7 27. e5 Rf8 28. Rf4 Rff7 29. Ne2 c5 30. c3 fxe5 31. Nxe5 Rxf4 32. Nxf4 a4 33. bxa4 Rg8 34. Rh1 Kd6 35. Nf7+ Ke7 36. Nxh6 Re8 37. Kd2 d4 38. Rb1 e5 39. Ng6+ Ke6 40. Rxb6+ Kd7 41. Nf5 Kc7 42. Rf6 dxc3+ 43. Kxc3 e4 44. Kc4 Rb8 45. Kxc5 Rb2 46. Rf7+ Kb8 47. Ne5 Rc2+ 48. Kd5 Rd2+ 49. Nd4 Rxa2 50. Nec6+ Kc8 51. Kd6 Rc2 52. Rc7# |
| ECO A06 in 2007 play it! program defeats black's program by checkmate in 47 moves | 1. Nf3 d5 2. d4 a5 3. Nc3 Nf6 4. Bg5 c6 5. e3 h6 6. Bf4 g5 7. Bg3 Qb6 8. Na4 Qa7 9. h4 g4 10. Nd2 Bf5 11. Nc5 b6 12. Bd3 bxc5 13. Bxf5 cxd4 14. exd4 Qxd4 15. Qe2 Nbd7 16. c3 Qb6 17. O-O-O h5 18. f3 Nc5 19. fxg4 hxg4 20. Rhe1 Na4 21. Nb3 Qb5 22. Qxb5 Nh5 23. Qxc6+ Kd8 24. Qxa8# |
| ECO A06 in 2007 play it! program defeats black's program by checkmate in 81 moves | 1. Nf3 d5 2. d4 a5 3. Nc3 Nf6 4. Bg5 c6 5. e3 h6 6. Bf4 g5 7. Bg3 Qb6 8. Na4 Qd8 9. Bd3 Bg4 10. h3 Bxf3 11. Qxf3 e6 12. a3 Nbd7 13. O-O-O c5 14. dxc5 Rc8 15. Bb5 Bxc5 16. h4 g4 17. Qf4 h5 18. c3 Be7 19. Kb1 b6 20. Rhe1 Kf8 21. Qd4 Nc5 22. Be5 Nxa4 23. Bxa4 Rc5 24. Bc2 Rc6 25. e4 Rc4 26. Qe3 Rc6 27. exd5 exd5 28. f3 Re6 29. Bf5 Bb4 30. Bxe6 fxe6 31. cxb4 gxf3 32. Qxf3 Kf7 33. Rf1 Rh6 34. bxa5 bxa5 35. Rc1 Qe7 36. Bxf6 Rxf6 37. Qxh5+ Kg7 38. Qg5+ Kf8 39. Rc8+ Qd8 40. Rxd8+ Ke7 41. Qxf6# |
| ECO A06 in 2007 play it! program defeats black's program by checkmate in 65 moves | 1. Nf3 d5 2. d4 a5 3. Nc3 Nf6 4. Bg5 c6 5. e3 h6 6. Bf4 g5 7. Bg3 Bf5 8. Bd3 Bxd3 9. Qxd3 Nbd7 10. O-O e6 11. a3 Nh5 12. e4 dxe4 13. Nxe4 Nxg3 14. fxg3 Qb6 15. Nfd2 e5 16. c3 Rd8 17. Rae1 Rg8 18. Qf3 Rg7 19. Nc4 Bc5 20. Nxb6 Bxb6 21. Nd6+ Kf8 22. Nxf7 g4 23. Qf5 Ra8 24. Nxe5+ Kg8 25. Nxd7 Bc7 26. Nf6+ Kh8 27. Qh5 Bf4 28. Re8+ Rg8 29. Rxf4 Kg7 30. Rxg8+ Rxg8 31. Qxg4+ Kf8 32. Nxg8+ Ke8 33. Qc8# |
| ECO A06 in 2007 play it! program defeats black's program by checkmate in 57 moves | 1. Nf3 d5 2. d4 a5 3. Nc3 Nf6 4. Bg5 c6 5. e3 h6 6. Bf4 g5 7. Bg3 Qb6 8. Na4 Qd8 9. Bd3 Bg4 10. h3 Bxf3 11. Qxf3 e6 12. a3 h5 13. O-O-O Nbd7 14. Rhe1 g4 15. hxg4 hxg4 16. Qf4 b5 17. Nc3 b4 18. Nb1 c5 19. Bb5 cxd4 20. Qxd4 bxa3 21. Nxa3 Bb4 22. Rh1 Rxh1 23. Rxh1 Bf8 24. Rh8 Rc8 25. Bd6 Rxc2+ 26. Nxc2 Qe7 27. Qc5 a4 28. Qc8+ Qd8 29. Rxf8# |
| ECO A06 in 2007 play it! program defeats black's program by checkmate in 81 moves | 1. Nf3 d5 2. d4 a5 3. Nc3 Nf6 4. Bg5 c6 5. e3 h6 6. Bf4 g5 7. Bg3 Bg7 8. Be2 Bf5 9. b3 Nbd7 10. Bd3 Bxd3 11. Qxd3 Nh5 12. O-O-O Nxg3 13. hxg3 e5 14. e4 exd4 15. Nxd4 Nc5 16. Qf3 Bxd4 17. Rxd4 Ne6 18. Rd2 d4 19. e5 Qe7 20. Ne4 a4 21. Nd6+ Kf8 22. b4 Rd8 23. a3 Rh7 24. Nf5 Qc7 25. Rxh6 Rxh6 26. Nxh6 Rd5 27. Ng4 Ke7 28. Qf6+ Ke8 29. f4 Qd8 30. f5 Qa5 31. bxa5 Nc5 32. Nh6 Ne4 33. Qxf7+ Kd8 34. e6 Kc8 35. e7 Nf6 36. Qxf6 Kd7 37. Nf7 g4 38. e8=Q+ Kxe8 39. Re2+ Re5 40. Rxe5+ Kf8 41. Nh6# |
| ECO A06 in 2007 play it! program defeats black's program in 75 moves | 1. Nf3 d5 2. d4 a5 3. Nc3 Nf6 4. Bf4 Nh5 5. Bg5 h6 6. Bd2 Nf6 7. e3 e6 8. Bd3 Nc6 9. a3 Bd7 10. b3 b6 11. Ne5 Nxe5 12. dxe5 Ng8 13. e4 d4 14. Ne2 c5 15. c3 Bc6 16. O-O Ra7 17. Ra2 Rd7 18. cxd4 cxd4 19. f4 Qa8 20. Ng3 Rc7 21. Qg4 g6 22. Rc1 Bc5 23. f5 h5 24. Qh3 gxf5 25. exf5 exf5 26. Nxf5 Qc8 27. Rxc5 Qb8 28. Rc4 a4 29. Nd6+ Kf8 30. Rxd4 axb3 31. Rb2 Bd7 32. Qg3 Be6 33. Rf4 Ne7 34. Nxf7 Bxf7 35. e6 Nc6 36. exf7 h4 37. Rxh4 Rxh4 38. Qg8+ |
| ECO A06 in 2007 play it! program defeats black's program by checkmate in 61 moves | 1. Nf3 d5 2. d4 a5 3. Nc3 Nf6 4. Bg5 c6 5. e3 h6 6. Bf4 g5 7. Bg3 Bf5 8. Bd3 Bxd3 9. Qxd3 e6 10. O-O Nbd7 11. b3 b6 12. a3 Be7 13. Ne5 Nxe5 14. Bxe5 O-O 15. f3 Bd6 16. f4 gxf4 17. h3 Bxe5 18. dxe5 Nh5 19. exf4 Qh4 20. Ne2 Ng7 21. c4 Nf5 22. Rac1 Qe7 23. cxd5 cxd5 24. Ng3 Nxg3 25. Qxg3+ Kh8 26. Qe3 Qxa3 27. f5 Qd6 28. Qxh6+ Kg8 29. exd6 a4 30. f6 Rad8 31. Qg7# |
| ECO A06 in 2007 play it! program defeats black's program by checkmate in 69 moves | 1. Nf3 d5 2. d4 a5 3. Nc3 Nf6 4. Bg5 c6 5. e3 h6 6. Bf4 g5 7. Bg3 Bg7 8. Be2 Bf5 9. b3 Nbd7 10. Bd3 Bg4 11. h3 Bh5 12. Be2 O-O 13. h4 Ne4 14. Nxe4 Bg4 15. Nc3 f6 16. Qd3 Bxf3 17. gxf3 Rf7 18. hxg5 fxg5 19. f4 e6 20. Bh5 Rf8 21. Bg4 Kf7 22. f5 Nf6 23. fxe6+ Kg8 24. Bf5 Qe7 25. O-O-O b6 26. Kb1 Ra7 27. Be5 Ne4 28. Bxe4 Qc5 29. Bh7+ Kh8 30. Bxg7+ Rxg7 31. dxc5 Rf4 32. exf4 Rd7 33. exd7 h5 34. d8=Q+ Kg7 35. Qg6# |
| ECO A06 in 2007 play it! program defeats black's program by checkmate in 69 moves | 1. Nf3 d5 2. d4 a5 3. Nc3 Nf6 4. Bg5 c6 5. e3 h6 6. Bf4 g5 7. Bg3 Qb6 8. Na4 Qa7 9. h4 g4 10. Nd2 Bf5 11. c4 e6 12. cxd5 exd5 13. Be2 Nbd7 14. O-O Be7 15. Rc1 O-O 16. Nc3 Qb6 17. b3 Ba3 18. Bf4 Bxc1 19. Qxc1 h5 20. f3 Rfe8 21. fxg4 Nxg4 22. Kh1 Re6 23. Nf3 Ndf6 24. Ne5 Be4 25. Nxe4 Nh2 26. Nxf6+ Rxf6 27. Kxh2 Rf5 28. Qb1 Rxe5 29. Bxe5 Qa7 30. Bxh5 b5 31. Bxf7+ Kf8 32. Bh5+ Qf7 33. Rxf7+ Ke8 34. Qf5 c5 35. Rd7# |
| ECO A06 in 2007 play it! program defeats black's program by checkmate in 73 moves | 1. Nf3 d5 2. d4 a5 3. Nc3 Nf6 4. Bg5 c6 5. e3 h6 6. Bf4 g5 7. Be5 Nbd7 8. Bd3 Nxe5 9. dxe5 Ng8 10. e4 g4 11. Nd2 Bg7 12. exd5 Bxe5 13. dxc6 bxc6 14. Be4 Ra6 15. Bd3 Ra8 16. Nc4 Bxc3+ 17. bxc3 Nf6 18. O-O Rb8 19. Qc1 Be6 20. Rd1 Bd5 21. Qf4 h5 22. Re1 Rb5 23. Qxf6 Rf8 24. Qd6 a4 25. Qa3 Rb8 26. Nd6+ Kd7 27. Nf5 Re8 28. c4 Be6 29. Ng7 f6 30. Rad1 Kc8 31. Nxe8 Qxe8 32. Rxe6 Rb7 33. Qxa4 Rb2 34. Qa8+ Kc7 35. Qxe8 Rxa2 36. c5 g3 37. Rxe7# |