| ECO A00 in 2007 play it! deepblue defeats black's deepblue by checkmate in 69 moves | 1. h4 g6 2. h5 h6 3. hxg6 fxg6 4. e4 e5 5. Nf3 Nc6 6. Bb5 Nge7 7. d4 Nxd4 8. Nxd4 exd4 9. Qxd4 Rh7 10. Bd2 Bg7 11. e5 a6 12. Bd3 d5 13. Nc3 Bf5 14. O-O-O Bxd3 15. cxd3 Qd7 16. Bf4 O-O-O 17. Qa7 Qg4 18. Bh2 Qg5+ 19. f4 Qxg2 20. Qa8+ Kd7 21. Qxb7 Qf3 22. Qxa6 Qe3+ 23. Kb1 Qb6 24. Qxb6 cxb6 25. Bg1 Kc6 26. Rc1 Kb7 27. Nb5 Ka6 28. Nc7+ Ka5 29. Ne6 Rdh8 30. Rc7 Bf8 31. Ra7+ Kb5 32. Nd4+ Kc5 33. Be3 Rf7 34. Rc1+ Kb4 35. a3# |
| ECO A00 in 2007 play it! deepblue defeats black's deepblue by checkmate in 51 moves | 1. h4 g6 2. h5 h6 3. hxg6 fxg6 4. e4 e5 5. Nf3 Nc6 6. Bb5 Qf6 7. Nc3 Bc5 8. Nd5 Qd8 9. b4 Nxb4 10. Rh4 Nxd5 11. exd5 c6 12. dxc6 bxc6 13. Bd3 Qf6 14. Bb2 d6 15. Rb1 Be6 16. Bc4 Kd7 17. Bc3 Bxc4 18. Rxc4 Bb6 19. Qe2 Re8 20. Qe4 d5 21. Qg4+ Kc7 22. Ra4 Bxf2+ 23. Kxf2 Ne7 24. Rxa7+ Kd6 25. Rd7+ Kc5 26. Qb4# |
| ECO A00 in 2007 play it! deepblue defeats black's deepblue by checkmate in 91 moves | 1. h4 g6 2. h5 h6 3. hxg6 fxg6 4. e4 e5 5. Nf3 Nc6 6. Bb5 Qf6 7. Nc3 Bc5 8. Nd5 Qd8 9. b4 Nxb4 10. Rh4 Nxd5 11. exd5 a6 12. Be2 Qe7 13. Bb2 d6 14. d4 e4 15. dxc5 exf3 16. Qd3 Bf5 17. Qxf3 Qxh4 18. Bxh8 O-O-O 19. cxd6 Rxd6 20. Be5 Rd7 21. c4 Re7 22. g3 Qh3 23. Qf4 g5 24. Qd4 h5 25. Qb2 b6 26. O-O-O h4 27. c5 b5 28. Kd2 hxg3 29. fxg3 Qg2 30. Qd4 Rd7 31. d6 cxd6 32. cxd6 Kb7 33. Rc1 Be6 34. Rc7+ Rxc7 35. dxc7 Bc4 36. Qg4 Qd5+ 37. Kc1 Qd6 38. c8=Q+ Kb6 39. Bd4+ Ka5 40. Bxc4 Ne7 41. Qb7 Kb4 42. a3+ Kxc4 43. Qe2+ Kb3 44. Qc2+ Kxa3 45. Qf3+ Kb4 46. Qfc3# |
| ECO A00 in 2007 play it! deepblue defeats black's deepblue by checkmate in 115 moves | 1. h4 g6 2. h5 h6 3. hxg6 fxg6 4. e4 e5 5. Nf3 Nc6 6. Bb5 Qf6 7. Nc3 Bc5 8. Nd5 Qd8 9. b4 Nxb4 10. Rh4 Nxd5 11. exd5 c6 12. dxc6 bxc6 13. Bd3 Qf6 14. Bb2 d6 15. Rb1 Be6 16. Bc4 Kd7 17. Bc3 Bxc4 18. Rxc4 Bb6 19. Qe2 Re8 20. Qe4 d5 21. Qg4+ Kc7 22. Ra4 h5 23. Qg3 Qxf3 24. gxf3 Rh6 25. Bxe5+ Kd7 26. Kd1 Re6 27. Rxb6 axb6 28. Ra7+ Kc8 29. Bg7 Re7 30. Rxe7 Nxe7 31. Bxh6 Kd7 32. Bf8 b5 33. Qg5 Nc8 34. Qxg6 h4 35. Ke2 Kc7 36. Qh7+ Kd8 37. Qxh4+ Ke8 38. Qf6 Kd7 39. d4 Kc7 40. Qf7+ Ne7 41. Qxe7+ Kc8 42. c3 b4 43. cxb4 c5 44. Qxc5+ Kd7 45. Qxd5+ Ke8 46. Bd6 Kd7 47. Qf5+ Kxd6 48. Kd3 Ke7 49. Qd5 Kf6 50. b5 Ke7 51. Qc5+ Kf6 52. Qe5+ Kf7 53. d5 Kg8 54. d6 Kf7 55. b6 Kg8 56. Qe7 Kh8 57. d7 Kg8 58. d8=Q# |
| ECO A00 in 2007 play it! deepblue defeats black's deepblue by checkmate in 53 moves | 1. h4 g6 2. h5 h6 3. hxg6 fxg6 4. e4 e5 5. Nf3 Nc6 6. Bb5 Qf6 7. Nc3 Bc5 8. Nd5 Qd8 9. b4 Nxb4 10. Rh4 Nxd5 11. exd5 a6 12. Be2 Qe7 13. Re4 d6 14. d4 Nf6 15. Re3 Nxd5 16. dxc5 Nxe3 17. Bxe3 Bg4 18. cxd6 cxd6 19. Qd5 Bxf3 20. Bxf3 Rc8 21. Be4 g5 22. Rb1 Qd8 23. Bg6+ Kd7 24. Qf7+ Qe7 25. Rxb7+ Kc6 26. Be4+ d5 27. Qxd5# |
| ECO A00 in 2007 play it! deepblue defeats black's deepblue by checkmate in 55 moves | 1. h4 g6 2. h5 h6 3. hxg6 fxg6 4. e4 e5 5. Nf3 Nc6 6. Bb5 Qf6 7. Nc3 Bc5 8. Nd5 Qd8 9. b4 Nxb4 10. Rh4 Nxd5 11. exd5 c6 12. dxc6 bxc6 13. Bd3 Qf6 14. Bb2 d6 15. Rb1 Be6 16. Bc4 Kd7 17. Bc3 Bxc4 18. Rxc4 Bb6 19. Qe2 Ne7 20. d4 exd4 21. Bxd4 Bxd4 22. Rb7+ Kc8 23. Rxe7 Bc3+ 24. Kf1 d5 25. Rxc3 Qd4 26. Qe6+ Kb8 27. Nxd4 Re8 28. Nxc6# |
| ECO A00 in 2007 play it! deepblue defeats black's deepblue in 101 moves | 1. h4 g6 2. h5 h6 3. hxg6 fxg6 4. e4 e5 5. Nf3 Nc6 6. Bb5 Qf6 7. Nc3 Bc5 8. Bxc6 dxc6 9. Na4 Bd6 10. d4 exd4 11. e5 Qf7 12. exd6 Qe6+ 13. Qe2 Qxe2+ 14. Kxe2 b5 15. d7+ Bxd7 16. Nc5 O-O-O 17. Ne5 Be8 18. Bf4 Rd5 19. Ned3 Bd7 20. Na6 Rh7 21. Bxc7 Kb7 22. Ndb4 Re7+ 23. Kd1 Bg4+ 24. f3 g5 25. fxg4 Rdd7 26. Bg3 Rd8 27. a4 Re3 28. Nc5+ Kc8 29. Bf2 Rd6 30. axb5 cxb5 31. Rxa7 Kb8 32. Rf7 Re8 33. Nba6+ Rxa6 34. Nxa6+ Kc8 35. Bxd4 Ne7 36. c3 Ng8 37. Re1 Rxe1+ 38. Kxe1 h5 39. Rf8+ Kb7 40. Nc5+ Kb6 41. Rb8+ Kc7 42. Rxg8 h4 43. Rxg5 Kc6 44. Rh5 Kd6 45. Ne4+ Kc6 46. g5 Kd7 47. g6 Kc6 48. g7 b4 49. g8=Q Kd7 50. Rh7+ Kc6 51. Qe6+ |
| ECO A00 in 2007 play it! deepblue defeats black's deepblue by checkmate in 57 moves | 1. h4 g6 2. h5 h6 3. hxg6 fxg6 4. e4 e5 5. Nf3 Nc6 6. Bb5 Qf6 7. Nc3 Bc5 8. Nd5 Qd8 9. b4 Nxb4 10. Rh4 Nxd5 11. exd5 a6 12. Be2 Qe7 13. Bb2 d6 14. d4 e4 15. dxc5 exf3 16. Qd3 Bf5 17. Qxf3 Qxh4 18. Bxh8 O-O-O 19. cxd6 Rxd6 20. Be5 Rd7 21. c4 Re7 22. g3 Qh3 23. Qf4 g5 24. Qd4 Qh2 25. d6 b5 26. dxe7 Qh5 27. Qd8+ Kb7 28. Qxc7+ Ka8 29. Qb8# |
| ECO A00 in 2007 play it! deepblue defeats black's deepblue by checkmate in 57 moves | 1. h4 g6 2. h5 h6 3. hxg6 fxg6 4. e4 e5 5. Nf3 Nc6 6. Bb5 Qf6 7. Nc3 Bc5 8. Nd5 Qd8 9. b4 Nxb4 10. Rh4 Nxd5 11. exd5 a6 12. Be2 Qe7 13. Re4 d6 14. d4 Nf6 15. Re3 Nxd5 16. dxc5 Nxe3 17. Bxe3 Be6 18. Qd3 g5 19. cxd6 cxd6 20. O-O-O Bxa2 21. Qa3 Be6 22. Rxd6 Bd7 23. Bc5 Qg7 24. Qe3 Rc8 25. Nxe5 Bb5 26. Bh5+ Qg6 27. Bxg6+ Kf8 28. Qf3+ Kg8 29. Qf7# |
| ECO A00 in 2007 play it! deepblue defeats black's deepblue by checkmate in 47 moves | 1. h4 g6 2. h5 h6 3. hxg6 fxg6 4. e4 e5 5. Nf3 Nc6 6. Bb5 Qf6 7. Nc3 Bc5 8. Nd5 Qd8 9. b4 Nxb4 10. Rh4 Nxd5 11. exd5 a6 12. Be2 Qe7 13. Bb2 d6 14. d4 e4 15. dxc5 exf3 16. Qd3 fxg2 17. Qxg6+ Kf8 18. Rf4+ Qf6 19. Rxf6+ Nxf6 20. Qxf6+ Ke8 21. Qxh8+ Ke7 22. Qg7+ Kd8 23. Bf6+ Ke8 24. Qe7# |
| ECO A00 in 2007 play it! deepblue defeats black's deepblue by checkmate in 99 moves | 1. h4 g6 2. h5 h6 3. hxg6 fxg6 4. e4 e5 5. Nf3 Nc6 6. Bb5 Qf6 7. Nc3 Bc5 8. Nd5 Qd8 9. b4 Nxb4 10. Rh4 Nxd5 11. exd5 a6 12. Be2 Qe7 13. Bb2 d6 14. d4 e4 15. dxc5 exf3 16. Qd3 Bf5 17. Qxf3 Qxh4 18. Bxh8 O-O-O 19. cxd6 Rxd6 20. Be5 Rd7 21. c4 Re7 22. g3 Qh3 23. Qf4 g5 24. Qd4 h5 25. Qb2 b6 26. O-O-O h4 27. c5 b5 28. Kd2 Qg2 29. Qd4 hxg3 30. Bxg3 Qh3 31. a4 Rxe2+ 32. Kxe2 Qh5+ 33. Ke3 Qf7 34. axb5 axb5 35. f3 Qe7+ 36. Kd2 Kd7 37. Bxc7 Kc8 38. Bd6 Qf7 39. Qe5 g4 40. Ra1 Kd8 41. Ra8+ Bc8 42. fxg4 Qf2+ 43. Qe2 Qxe2+ 44. Kxe2 Nf6 45. g5 b4 46. gxf6 b3 47. f7 Kd7 48. Ra7+ Bb7 49. f8=Q b2 50. Rxb7# |
| ECO A00 in 2007 play it! deepblue defeats black's deepblue in 111 moves | 1. h4 g6 2. h5 h6 3. hxg6 fxg6 4. e4 e5 5. Nf3 Nc6 6. Bb5 Qf6 7. Nc3 Bc5 8. Nd5 Qd8 9. b4 Nxb4 10. Rh4 Nxd5 11. exd5 a6 12. Be2 Qe7 13. Bb2 d6 14. d4 e4 15. dxc5 exf3 16. Qd3 Bf5 17. Qxf3 Qxh4 18. Bxh8 O-O-O 19. c6 bxc6 20. Bxa6+ Kd7 21. dxc6+ Ke8 22. Qe3+ Ne7 23. Bg7 h5 24. g3 Qh1+ 25. Kd2 Qd5+ 26. Bd3 Bxd3 27. cxd3 Kf7 28. Bc3 Qxc6 29. Qf4+ Ke8 30. Re1 Ra8 31. a4 Rxa4 32. Qf6 Ra2+ 33. Bb2 Rxb2+ 34. Qxb2 Qf3 35. Qb5+ Kd8 36. Re2 d5 37. Qb7 Nc8 38. Qb2 Qf8 39. Qb5 Nb6 40. Kd1 g5 41. Qc6 Qf7 42. Re5 Qf3+ 43. Ke1 Qh1+ 44. Ke2 Nd7 45. Qa8+ Nb8 46. Rxd5+ Ke7 47. Re5+ Kd6 48. Qxh1 Kxe5 49. f4+ gxf4 50. Qxh5+ Kd6 51. Qg6+ Kc5 52. Qf5+ Kd6 53. Qf8+ Kc6 54. Qxb8 fxg3 55. Kf3 Kd5 56. Qb5+ |
| ECO A00 in 2007 play it! deepblue defeats black's deepblue by checkmate in 51 moves | 1. h4 g6 2. h5 h6 3. hxg6 fxg6 4. e4 e5 5. Nf3 Nc6 6. Bb5 Qf6 7. Nc3 Bc5 8. Nd5 Qd8 9. b4 Nxb4 10. Rh4 Nxd5 11. exd5 c6 12. dxc6 bxc6 13. Bd3 Qf6 14. Bb2 d6 15. Rb1 Be6 16. Bc4 Kd7 17. Bc3 Bxc4 18. Rxc4 Bb6 19. Qe2 Ne7 20. d4 exd4 21. Bxd4 Bxd4 22. Rb7+ Ke8 23. Nxd4 Qe5 24. Qxe5 Kd8 25. Qxh8+ Ng8 26. Qxg8# |
| ECO A00 in 2007 play it! deepblue defeats black's deepblue by checkmate in 55 moves | 1. h4 g6 2. h5 h6 3. hxg6 fxg6 4. e4 e5 5. d4 Nf6 6. dxe5 Kf7 7. exf6 Qxf6 8. Bc4+ Ke8 9. Nf3 Nc6 10. Nbd2 Bc5 11. a3 Ne5 12. Qe2 Ng4 13. Rf1 Kd8 14. e5 Qf5 15. Nb3 Bb6 16. c3 Nxf2 17. Rxf2 Bxf2+ 18. Kxf2 Qg4 19. Nc5 Rf8 20. Kf1 h5 21. Qd3 Ke8 22. Bh6 Rf5 23. Qd5 b5 24. Bxb5 Rxf3+ 25. gxf3 Qh3+ 26. Ke2 Ba6 27. Qg8+ Ke7 28. Bg5# |
| ECO A00 in 2007 play it! deepblue defeats black's deepblue by checkmate in 113 moves | 1. h4 g6 2. h5 h6 3. hxg6 fxg6 4. e4 e5 5. Nf3 Nc6 6. Bb5 Qf6 7. Nc3 Bc5 8. Nd5 Qd8 9. b4 Nxb4 10. Rh4 Nxd5 11. exd5 a6 12. Be2 Qe7 13. Bb2 d6 14. d4 e4 15. dxc5 exf3 16. Qd3 Bf5 17. Qxf3 Qxh4 18. Bxh8 O-O-O 19. cxd6 Rxd6 20. Be5 Rd7 21. c4 Re7 22. g3 Qh3 23. Qc3 Qh1+ 24. Kd2 Qe4 25. f4 Qg2 26. Qf3 Qxf3 27. Bxf3 g5 28. Re1 gxf4 29. gxf4 Rf7 30. Rg1 Nf6 31. Rh1 Ng8 32. Ke3 Kd7 33. Kd4 b6 34. c5 bxc5+ 35. Kxc5 a5 36. Kd4 Kc8 37. Rc1 Kd8 38. Rc5 a4 39. Ra5 Ne7 40. Rxa4 Bc2 41. Ra7 Nf5+ 42. Kc3 Nh4 43. d6 Nxf3 44. Ra8+ Kd7 45. dxc7 Ke7 46. c8=Q Nxe5 47. Qd8+ Ke6 48. Qe8+ Re7 49. Ra6+ Nc6 50. Qxc6+ Kf5 51. Qf6+ Kg4 52. Qxe7 Bf5 53. Kd4 Bh7 54. Qxh7 h5 55. Qe4 Kh3 56. Rg6 h4 57. Qg2# |
| ECO A00 in 2007 play it! deepblue defeats black's deepblue by checkmate in 137 moves | 1. h4 g6 2. h5 h6 3. hxg6 fxg6 4. e4 e5 5. Nf3 Nc6 6. Bb5 Nge7 7. d4 Nxd4 8. Nxd4 exd4 9. Qxd4 Rh7 10. Nc3 Bg7 11. Qd3 c6 12. Bc4 b5 13. Bb3 d5 14. exd5 b4 15. Ne2 Bf5 16. Qa6 cxd5 17. Qb5+ Kf7 18. Qxb4 Qb6 19. Qd2 Qe6 20. c3 Re8 21. Ba4 Rc8 22. Bb5 Rc5 23. a4 a6 24. Bd3 Bxd3 25. Qxd3 Qe4 26. Qxe4 dxe4 27. Be3 Rc4 28. Nf4 Nf5 29. Bb6 Be5 30. Ne2 Rh8 31. a5 Bd6 32. Rd1 Rc6 33. Nd4 Nxd4 34. Bxd4 Rb8 35. b4 h5 36. Rh4 Re8 37. Kd2 Rc4 38. Ke3 Be5 39. Bxe5 Rxe5 40. Rd6 Rg5 41. Rxa6 Rxc3+ 42. Kd4 Rc2 43. Rf4+ Rf5 44. Ra7+ Kf6 45. Rxf5+ gxf5 46. f3 Rd2+ 47. Ke3 Rd3+ 48. Kf4 exf3 49. Ra6+ Ke7 50. gxf3 Rd4+ 51. Kxf5 Rxb4 52. Rb6 Ra4 53. a6 Kd7 54. f4 Ra5+ 55. Ke4 Ra4+ 56. Kd5 h4 57. f5 h3 58. Rh6 Ra5+ 59. Kd4 Ra3 60. Rh7+ Kc6 61. a7 h2 62. Rxh2 Rxa7 63. Rh6+ Kd7 64. Rh7+ Ke8 65. Rxa7 Kd8 66. f6 Kc8 67. f7 Kb8 68. Re7 Kc8 69. f8=Q# |
| ECO A00 in 2007 play it! deepblue defeats black's deepblue in 45 moves | 1. h4 g6 2. h5 h6 3. hxg6 fxg6 4. e4 e5 5. Nf3 Nc6 6. Bb5 Qf6 7. Nc3 Bc5 8. Nd5 Qd8 9. b4 Be7 10. Bb2 Bd6 11. d4 a5 12. a3 Nxd4 13. Bxd4 exd4 14. Qxd4 Rh7 15. e5 Ne7 16. Nf6+ Kf7 17. Ng5+ Kg7 18. Nh5+ gxh5 19. exd6+ Kg6 20. Bd3+ Nf5 21. Bxf5+ Kxf5 22. Qe4+ Kxg5 23. f4+ |
| ECO A00 in 2007 play it! deepblue defeats black's deepblue by checkmate in 71 moves | 1. h4 g6 2. h5 h6 3. hxg6 fxg6 4. e4 e5 5. Nf3 Nc6 6. Bb5 Qf6 7. Nc3 Bc5 8. Nd5 Qd8 9. b4 Nxb4 10. Rh4 Nxd5 11. exd5 a6 12. Be2 Qe7 13. Bb2 Bd6 14. c4 Rh7 15. Qc2 Rg7 16. Rg4 g5 17. Re4 Nf6 18. Bxe5 Nxe4 19. Bxg7 g4 20. Nd4 Bc5 21. Nf5 Bb4 22. Nxe7 Nxd2 23. Qg6+ Kd8 24. Nc6+ dxc6 25. Bf6+ Be7 26. Qg8+ Kd7 27. Bxg4+ Kd6 28. c5+ Kxc5 29. Bxe7+ Kb6 30. Bxc8 Ne4 31. Rb1+ Ka5 32. Rxb7 Rxc8 33. Qxc8 Nc3 34. Qxc7+ Ka4 35. Qxc6+ Ka5 36. Bb4# |
| ECO A00 in 2007 play it! deepblue defeats black's deepblue in 127 moves | 1. h4 g6 2. h5 h6 3. hxg6 fxg6 4. e4 e5 5. Nf3 Nc6 6. Bb5 Qf6 7. Nc3 Bc5 8. Nd5 Qd8 9. b4 Nxb4 10. Rh4 Nxd5 11. exd5 a5 12. Re4 Ne7 13. Rxe5 Bd6 14. Re4 O-O 15. Bb2 Bc5 16. Bc4 Kh7 17. d4 Bb4+ 18. c3 Bd6 19. Qd2 Nf5 20. O-O-O Rb8 21. Rh1 b5 22. g4 bxc4 23. gxf5 h5 24. fxg6+ Kg8 25. Ne5 Bxe5 26. dxe5 Rf5 27. Rxc4 Rxe5 28. f4 Rf5 29. Re4 Rb6 30. Qe3 Qf6 31. Re8+ Kg7 32. Rxc8 Rxd5 33. Rxc7 a4 34. Rg1 Rd3 35. Qe4 h4 36. Qxa4 Qe7 37. c4+ Kh6 38. Be5 Rxg6 39. Rxg6+ Kxg6 40. Qc2 Qa3+ 41. Bb2 Qd6 42. Qg2+ Rg3 43. Qe4+ Kh6 44. Rb7 Rg1+ 45. Kc2 Qd1+ 46. Kc3 Rg3+ 47. Kb4 Qd2+ 48. Ka4 Qd3 49. Rb6+ Kh5 50. Qe5+ Kg4 51. Kb5 Qf5 52. Rd6 Rg2 53. c5 Rc2 54. Qg7+ Kxf4 55. Qd4+ Kg5 56. Qg1+ Kf4 57. Bc1+ Kf3 58. Qf1+ Rf2 59. Rd3+ Kg4 60. Qd1+ Rf3 61. Rd4+ Kh5 62. Rd5 Qxd5 63. Qxd5+ Kg4 64. Qd4+ |
| ECO A00 in 2007 play it! deepblue defeats black's deepblue by checkmate in 113 moves | 1. h4 g6 2. h5 h6 3. hxg6 fxg6 4. e4 e5 5. Nf3 Nc6 6. Bb5 Qf6 7. Nc3 Bc5 8. Nd5 Qd8 9. b4 Nxb4 10. Rh4 Nxd5 11. exd5 a6 12. Be2 Qe7 13. Bb2 d6 14. d4 e4 15. dxc5 exf3 16. Qd3 Bf5 17. Qxf3 Qxh4 18. Bxh8 O-O-O 19. cxd6 Rxd6 20. Be5 Qb4+ 21. Kf1 Rd7 22. c4 Re7 23. Qc3 Qa4 24. f4 b6 25. c5 b5 26. d6 Rd7 27. dxc7 Ne7 28. Bd6 Rxd6 29. Qh8+ Kxc7 30. cxd6+ Kxd6 31. Rd1+ Ke6 32. Qxh6 Nd5 33. Rc1 Qxa2 34. Qg7 Ne3+ 35. Kf2 Ng4+ 36. Ke1 Qa5+ 37. Rc3 Nf6 38. Qc7 Qxc7 39. Rxc7 Kd5 40. Ra7 Bc8 41. Bf3+ Kd6 42. g3 Nh5 43. f5 Nxg3 44. fxg6 Nh5 45. Bxh5 Be6 46. Rxa6+ Kd5 47. Rxe6 Kxe6 48. g7 Kd5 49. g8=Q+ Kc6 50. Be2 b4 51. Qe6+ Kc7 52. Kd2 b3 53. Kc3 b2 54. Kxb2 Kb7 55. Qd6 Ka7 56. Qc7+ Ka8 57. Bf3# |