| ECO A04 in 2004 play it! sos defeats white's chessmaster 1000 in 89 moves | 1. Nf3 d6 2. d4 Bg4 3. c4 Nd7 4. Nc3 e5 5. g3 h6 6. Bg2 c6 7. h3 Bf5 8. e4 Bh7 9. O-O Ngf6 10. Qe2 Qc7 11. Rd1 Be7 12. Nh4 Rd8 13. Nf5 Bxf5 14. exf5 O-O 15. Be3 Rfe8 16. Rac1 exd4 17. Bxd4 Qa5 18. Qc2 Nb6 19. Qd3 Nfd7 20. b3 Bg5 21. Ra1 Bf6 22. Ne4 Be5 23. Bxe5 Nxe5 24. Qd4 d5 25. Nc5 dxc4 26. Qxd8 Rxd8 27. Rxd8+ Kh7 28. Nxb7 Qa6 29. Nc5 Qa3 30. b4 Qxb4 31. Na6 Qb2 32. Rf1 c3 33. Nc5 Qxa2 34. f6 Qc4 35. Ne4 c2 36. Rc1 Nd3 37. Bf1 Nd5 38. fxg7 Kxg7 39. Nd6 Qb3 40. Nf5+ Kf6 41. Bxd3 Qxd3 42. Ne3 Ke7 43. Rxd5 cxd5 44. Kg2 d4 45. Nxc2 |
| ECO A15 in 2004 play it! sos defeats white's aristarch 1 in 133 moves | 1. c4 Nf6 2. Nf3 b6 3. g3 c5 4. b3 g6 5. Bb2 Bg7 6. Bg2 Bb7 7. O-O O-O 8. d4 cxd4 9. Qxd4 d6 10. Nc3 Nbd7 11. Rad1 Ne4 12. Qe3 Nxc3 13. Bxc3 Bxc3 14. Qxc3 Nf6 15. Qe3 Qc7 16. Rfe1 Rad8 17. Qf4 Kg7 18. e4 e5 19. Qh4 h6 20. Re2 Qe7 21. h3 Rg8 22. a4 g5 23. Nxg5 hxg5 24. Qxg5+ Kf8 25. Qh6+ Ke8 26. Qe3 Qc7 27. a5 Qc5 28. Qf3 Ke7 29. axb6 axb6 30. Qd3 Bc6 31. Kh1 b5 32. Rc2 Qb6 33. cxb5 Bxb5 34. Qd2 Bc6 35. Rc4 d5 36. Rxc6 Qxc6 37. exd5 Qd6 38. Qd3 Rg6 39. Qf5 Rdg8 40. Kg1 Nd7 41. Qh5 Rc8 42. Be4 Nf6 43. Qh4 Rgg8 44. Bg2 Rh8 45. Qg5 Rc3 46. Ra1 Rg8 47. Qf5 Rg7 48. Ra7+ Rc7 49. Rxc7+ Qxc7 50. h4 Qc1+ 51. Bf1 Ng4 52. b4 Qd2 53. b5 Rg6 54. Qf3 Rf6 55. Qa3+ Rd6 56. Qf3 Nf6 57. Qf5 Rxd5 58. Qf3 Rd6 59. Qb7+ Nd7 60. Qa8 Qc1 61. Qg2 Rd1 62. h5 f5 63. Qh3 e4 64. h6 Ne5 65. Qh4+ Ke6 66. Kg2 Rxf1 67. Qf6+ |
| ECO A01 in 2004 play it! sos defeats white's ruffian 0 in 137 moves | 1. b3 d5 2. Bb2 Bg4 3. g3 Nd7 4. Bg2 c6 5. Nf3 Ngf6 6. O-O e6 7. d3 Bc5 8. Nbd2 O-O 9. e4 dxe4 10. dxe4 e5 11. h3 Bxf3 12. Qxf3 a5 13. Nc4 Qc7 14. a4 b5 15. Ne3 Rfe8 16. Rfd1 bxa4 17. Rxa4 Nb6 18. Ra2 a4 19. Nf5 a3 20. Bc3 Bf8 21. Nh6+ Kh8 22. Qf5 Ra7 23. f4 exf4 24. Bxf6 gxf6 25. Ng4 Qe7 26. Nxf6 Qc5+ 27. Kf1 Qxf5 28. exf5 Rc8 29. gxf4 Ra5 30. Be4 Kg7 31. Nh5+ Kh6 32. Ng3 Nd5 33. Bxd5 Rxd5 34. Rxd5 cxd5 35. Kg2 Re8 36. Kf3 Bc5 37. Kg4 d4 38. h4 Re3 39. f6 Kg6 40. Nh5 Bb4 41. Ng3 Kxf6 42. h5 d3 43. cxd3 Rxd3 44. Ne4+ Kg7 45. Rg2 Kf8 46. Nf6 Rd2 47. Rg1 a2 48. Kf5 Bc3 49. Rg8+ Ke7 50. Re8+ Kd6 51. Ra8 Kc6 52. h6 a1=Q 53. Rxa1 Bxa1 54. Nxh7 Rh2 55. Ng5 Rxh6 56. Kg4 Rg6 57. Kh5 Rg7 58. b4 Kb5 59. Ne4 Kxb4 60. Nd6 Kc5 61. Nf5 Rg1 62. Nh6 f6 63. Ng4 Bd4 64. Nh6 Kd5 65. Nf5 Bc5 66. Nh4 Ke4 67. Ng6 Rh1+ 68. Nh4 f5 69. Kg6 |
| ECO A01 in 2004 play it! sos defeats white's ruffian 0 by checkmate in 62 moves | 1. b3 e5 2. Bb2 d6 3. g3 Nf6 4. d4 exd4 5. Qxd4 d5 6. Qe3+ Be6 7. Nd2 Nc6 8. Bg2 Nb4 9. Kd1 Ng4 10. Qf3 Nc6 11. Nh3 Nce5 12. Qc3 c5 13. Nf1 d4 14. Qd2 Be7 15. Kc1 O-O 16. Bxb7 Rb8 17. Bg2 Qb6 18. Ba3 Rfd8 19. f4 Qa6 20. Bb2 c4 21. Bxd4 c3 22. Bxc3 Rxd2 23. Nxd2 Qxe2 24. Be4 Ba3+ 25. Kb1 Rc8 26. Bxe5 Nxe5 27. Rg1 Bxh3 28. fxe5 Qxd2 29. e6 Qc3 30. exf7+ Kf8 31. Rd1 Qb2# |
| ECO B30 in 2004 play it! sos defeats white's tao in 63 moves | 1. e4 c5 2. Nf3 Nc6 3. Nc3 e5 4. Bc4 d6 5. d3 Be7 6. Nd2 Bg5 7. h4 Bxd2+ 8. Bxd2 Nf6 9. O-O Bg4 10. f3 Be6 11. Bg5 h6 12. Bxf6 Qxf6 13. Nd5 Bxd5 14. exd5 Nd4 15. c3 Nf5 16. Qa4+ Kf8 17. Qd7 Rd8 18. Qxb7 Ng3 19. Qxa7 Qxh4 20. Rfe1 f5 21. d4 Kg8 22. Bb3 cxd4 23. cxd4 e4 24. Qc7 Kh7 25. Qc3 Rhe8 26. Bc4 Rc8 27. b3 Rxc4 28. bxc4 e3 29. Qxe3 Rxe3 30. Rxe3 Qxd4 31. Rae1 f4 32. a4 |
| ECO B41 in 2004 play it! sos defeats white's the king in 129 moves | 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. c4 Nf6 6. Nc3 d6 7. Be2 b6 8. O-O Bb7 9. f3 Nbd7 10. Be3 Be7 11. Rc1 O-O 12. b4 Rc8 13. Qb3 Rc7 14. Rfd1 Qb8 15. a4 Rfc8 16. Nc2 Ba8 17. Na3 h6 18. Bf1 g5 19. Rc2 Ne5 20. Bd4 Nc6 21. Bf2 g4 22. f4 Nh5 23. g3 d5 24. cxd5 Nxb4 25. d6 Nxc2 26. dxe7 Nxa3 27. Qxa3 Re8 28. Bd4 Bb7 29. Be5 Qc8 30. a5 bxa5 31. Be2 Rcxe7 32. Bxg4 Ng7 33. Bf6 Rd7 34. Qxa5 Qc7 35. Qa1 Rxd1+ 36. Nxd1 Nf5 37. Nf2 Ne3 38. Be5 Qc5 39. Bd4 Nc2 40. Bxc5 Nxa1 41. Bd1 Rc8 42. Be3 Nc2 43. Bc1 Rc4 44. f5 Nd4 45. Bxh6 exf5 46. exf5 a5 47. Bf4 a4 48. Nd3 a3 49. Nc1 Rb4 50. Bd6 a2 51. Nxa2 Rb1 52. Nc3 Ne2+ 53. Nxe2 Rxd1+ 54. Kf2 Rxd6 55. Ke3 Kg7 56. h4 Kf6 57. g4 Ke5 58. Nf4 Rd4 59. Nd3+ Rxd3+ 60. Kxd3 Bf3 61. f6 Bxg4 62. Ke3 Bh5 63. Kd3 Kxf6 64. Ke4 Ke6 65. Kf4 |
| ECO B32 in 2004 play it! sos defeats white's pro deo 10 in 137 moves | 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 a6 5. Bg5 Qa5+ 6. Bd2 Qe5 7. Be3 Nf6 8. f3 d5 9. Nxc6 bxc6 10. Nc3 dxe4 11. fxe4 Nxe4 12. Qf3 Nxc3 13. Qxc6+ Kd8 14. Qxc3 Qxc3+ 15. bxc3 e5 16. Bc4 f6 17. Rb1 Bd6 18. O-O Ke7 19. Rfd1 Rd8 20. Kf2 Rb8 21. Rxb8 Bxb8 22. Rb1 Bc7 23. Bc5+ Bd6 24. Be3 Rd7 25. Bg8 Rc7 26. Bxh7 Rxc3 27. Rb3 Rc4 28. Bd3 Ra4 29. Rc3 Bb7 30. Rb3 Bd5 31. Rb6 a5 32. Rb5 Bxa2 33. Rb7+ Kf8 34. Ra7 g5 35. Ra6 Ke7 36. Bf5 Bf7 37. Ra7+ Kf8 38. Ra6 Be7 39. Ra8+ Kg7 40. Ra7 Bc5 41. Bxc5 Rf4+ 42. Ke2 Rxf5 43. Rxa5 Bc4+ 44. Kd2 Kg6 45. Be3 Rf1 46. Rc5 Ba6 47. Kc3 Re1 48. Bd2 Re2 49. g3 Rxh2 50. Be1 Kf5 51. Rd5 Re2 52. Rd1 Kg4 53. Ra1 Bb7 54. Kd3 Kf3 55. c4 Be4+ 56. Kc3 f5 57. Kb4 f4 58. Kc5 Kg2 59. Kd6 f3 60. c5 Bf5 61. Bc3 e4 62. Ke5 Bh3 63. Bd4 Kxg3 64. Rg1+ Bg2 65. c6 Rc2 66. Kxe4 f2+ 67. Kd3 fxg1=Q 68. Bxg1 Rxc6 69. Kd4 |
| ECO B66 in 2004 play it! sos defeats white's shredder in 134 moves | 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Bg5 e6 7. Qd2 a6 8. O-O-O h6 9. Bf4 Bd7 10. Nxc6 Bxc6 11. f3 e5 12. Be3 Be7 13. Bc4 O-O 14. Qf2 b5 15. Bb3 Rc8 16. Kb1 Qd7 17. Qg3 Kh8 18. Nd5 Bxd5 19. Bxd5 Nxd5 20. Rxd5 f5 21. Qh3 Qe6 22. Rhd1 Qg6 23. exf5 Rxf5 24. R1d2 Rc4 25. Bf2 Kh7 26. R5d3 e4 27. fxe4 Rxe4 28. a3 Rh5 29. Qf3 Rxh2 30. Bg3 Rh1+ 31. Rd1 Rxd1+ 32. Qxd1 Rg4 33. Qf3 Bf6 34. Bf2 Rxg2 35. Rxd6 Rg5 36. Be1 Rg1 37. Re6 a5 38. Qd5 b4 39. axb4 axb4 40. Qf3 h5 41. Ka2 Qf7 42. Qe2 Rg4 43. Kb1 g6 44. Rb6 Qg7 45. Qf3 Rg1 46. Qe4 Qe7 47. Re6 Qf7 48. Ka2 Bg7 49. Qe3 Rf1 50. Kb1 Bf6 51. Re4 Qd5 52. Qe2 b3 53. cxb3 Qxb3 54. Qc2 Qb7 55. Re8 Qb4 56. Qc7+ Bg7 57. Qc1 Rxe1 58. Rxe1 Bxb2 59. Qxb2 Qxe1+ 60. Ka2 Qa5+ 61. Kb1 Qf5+ 62. Ka2 h4 63. Qh2 g5 64. Qd6 h3 65. Kb3 Qf3+ 66. Kc2 Qf2+ 67. Kd3 h2 |
| ECO B41 in 2004 play it! sos defeats white's ruffian 0 in 104 moves | 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Be2 Be7 7. O-O O-O 8. f4 Qc7 9. Be3 Nc6 10. Kh1 a6 11. a4 Rd8 12. Bf3 Ne5 13. f5 Nxf3 14. Qxf3 e5 15. Nb3 b6 16. Rfd1 Rb8 17. Rd2 Bb7 18. a5 bxa5 19. Nxa5 Ba8 20. Nb3 Rb4 21. Rxa6 Qc8 22. Ra7 Nxe4 23. Nxe4 Bxe4 24. Qg4 Re8 25. c3 h5 26. Qd1 Rb8 27. f6 gxf6 28. Nc1 Qh3 29. Ra4 Qf5 30. Qe1 d5 31. Kg1 Qg6 32. Qf1 h4 33. Rf2 h3 34. g3 f5 35. Ra6 f6 36. Ba7 Rb7 37. Nd3 f4 38. Nxe5 Qg7 39. Qxh3 fxe5 40. Qe6+ Kh8 41. Rxf4 Bc5+ 42. Bxc5 Rxe6 43. Rh4+ Kg8 44. Rxe6 Qg5 45. Re8+ Kf7 46. Rf8+ Kg7 47. b4 Rf7 48. Rxf7+ Kxf7 49. Rxe4 dxe4 50. b5 e3 51. c4 e2 52. Bb4 Qc1+ |
| ECO B33 in 2004 play it! sos defeats white's pro deo 10 in 130 moves | 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Bg5 e6 7. Qd2 a6 8. O-O-O h6 9. Be3 Be7 10. f4 O-O 11. Be2 d5 12. Qe1 Bb4 13. Bf3 Qa5 14. e5 Ne4 15. Bxe4 dxe4 16. Nxc6 bxc6 17. a3 Bxc3 18. Qxc3 Qxc3 19. bxc3 f5 20. Rd6 Re8 21. Rhd1 Re7 22. Rxc6 Bb7 23. Rcd6 Rc8 24. Kd2 Kf7 25. Rb1 Bc6 26. c4 Rec7 27. c5 h5 28. c4 a5 29. Rb6 Ke7 30. Bf2 Bd7 31. Ra6 a4 32. Kc3 Kf7 33. Rab6 Ke7 34. Rd1 Kf7 35. Kb4 Be8 36. Rdd6 Bd7 37. Rd4 Be8 38. Rd1 Bd7 39. Rdd6 Ke8 40. Be3 Kd8 41. Rb5 Ke7 42. h3 g6 43. Rbb6 Bc6 44. Bf2 Kf7 45. Kc3 Bd7 46. Kd2 g5 47. fxg5 f4 48. h4 e3+ 49. Bxe3 fxe3+ 50. Kxe3 Ke7 51. g4 Rxc5 52. gxh5 Rxe5+ 53. Kd4 Rf5 54. Kc3 Rfc5 55. Kd3 Bc6 56. Rdxc6 R5xc6 57. Rb4 e5 58. h6 e4+ 59. Ke3 Rxc4 60. Rxc4 Rxc4 61. h7 Rc8 62. h5 Kf7 63. Kxe4 Kg7 64. Kd4 Kxh7 65. Kd3 Rc1 |
| ECO C42 in 2004 play it! sos defeats white's pro deo 10 in 139 moves | 1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. d4 d5 6. Bd3 Be7 7. O-O Nc6 8. c4 Nb4 9. Be2 O-O 10. Nc3 Bf5 11. a3 Nxc3 12. bxc3 Nc6 13. Re1 Re8 14. cxd5 Qxd5 15. Bf4 Rac8 16. Bd3 b5 17. Rb1 a6 18. a4 Bxd3 19. Qxd3 bxa4 20. Qxa6 a3 21. Qd3 Qd7 22. Nd2 a2 23. Ra1 Qd5 24. Qf3 Qxf3 25. Nxf3 g5 26. Bg3 Ra8 27. h3 Reb8 28. Bxc7 Rb2 29. g4 Ra7 30. d5 Rxc7 31. dxc6 Bc5 32. Rf1 f6 33. Ne1 Rd2 34. Nf3 Re2 35. Nd4 Bxd4 36. cxd4 Rxc6 37. Kg2 Rcc2 38. Rad1 Kf7 39. d5 Ke7 40. d6+ Kd7 41. Kf3 Rb2 42. Kg2 Red2 43. Rxd2 Rxd2 44. Kf3 Kxd6 45. Ra1 Ke5 46. Ke3 Rb2 47. f3 f5 48. Kd3 Rf2 49. Kc4 h6 50. Kc5 Rxf3 51. Rxa2 Rxh3 52. Re2+ Kf4 53. gxf5 Kxf5 54. Rf2+ Ke4 55. Re2+ Kf3 56. Rc2 g4 57. Rc3+ Ke2 58. Rc2+ Kd3 59. Ra2 Rh5+ 60. Kd6 Rg5 61. Ra3+ Ke2 62. Ra2+ Kf3 63. Ra3+ Kf4 64. Ra4+ Kf5 65. Ke7 g3 66. Ra5+ Kg6 67. Ra6+ Kg7 68. Ra7 g2 69. Rd7 g1=Q 70. Ke8+ |
| ECO C11 in 2004 play it! sos defeats white's junior in 124 moves | 1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. e5 Nfd7 5. f4 c5 6. Nf3 Nc6 7. Be3 cxd4 8. Nxd4 Bc5 9. Qd2 O-O 10. O-O-O Qe7 11. Be2 Nxd4 12. Bxd4 b6 13. Rhf1 Bb7 14. Qe3 f6 15. exf6 Nxf6 16. g4 Rae8 17. g5 Nd7 18. Qh3 Bxd4 19. Rxd4 Rf7 20. Bh5 g6 21. Bg4 Nc5 22. Re1 Ne4 23. Nxe4 dxe4 24. Kb1 Rxf4 25. Red1 Bc6 26. a3 Qxg5 27. Bxe6+ Kg7 28. Qc3 Rxe6 29. Rd6+ Ref6 30. Rxc6 Kh6 31. Rc7 Rf7 32. Rdd7 Rxd7 33. Qh3+ Rh4 34. Qxd7 Qe5 35. Qxh7+ Kg5 36. Qd7 Rxh2 37. Qd8+ Qf6 38. Qd5+ Qf5 39. Qd1 Rf2 40. Qd6 Kg4 41. Re7 g5 42. Qd4 Kf3 43. Re5 Qf4 44. Qd1+ Kg3 45. Qd5 g4 46. Rxe4 Qf5 47. Qd6+ Kg2 48. Qc6 Kg1 49. Re3 Qf7 50. Rg3+ Kh2 51. Rb3 Rf3 52. Qh6+ Kg1 53. Qh4 Qf5 54. Ka2 Kg2 55. Rb4 g3 56. Rc4 Qe6 57. b3 Qe1 58. Qg5 Rf2 59. Qd8 Kg1 60. Qd4 g2 61. Qd7 Kf1 62. Qh3 Qe5 |
| ECO B10 in 1994 play it! sos defeats white's gandalf in 106 moves | 1. e4 c6 2. Nf3 d5 3. Nc3 g6 4. exd5 cxd5 5. Bb5+ Bd7 6. Bxd7+ Qxd7 7. d4 Nc6 8. O-O Rc8 9. Re1 e6 10. a3 Be7 11. Bf4 Nf6 12. Bh6 Rg8 13. Re2 Ng4 14. Bf4 g5 15. Bg3 h5 16. h3 Nh6 17. Ne5 Nxe5 18. Bxe5 g4 19. hxg4 hxg4 20. a4 Nf5 21. Qd3 Bb4 22. Nd1 Rg5 23. c3 Bd6 24. Bxd6 Qxd6 25. Re5 f6 26. Qb5+ Kf7 27. Re1 Rh5 28. Qxb7+ Rc7 29. Qb5 Qh2+ 30. Kf1 g3 31. Qa6 gxf2 32. Qxe6+ Kg7 33. Kxf2 Qg3+ 34. Kg1 Nh4 35. Ne3 Nf3+ 36. Kf1 Nxe1 37. Nf5+ Rxf5+ 38. Qxf5 Qxg2+ 39. Kxe1 Re7+ 40. Kd1 Qe2+ 41. Kc1 Qe1+ 42. Kc2 Qxa1 43. Qh5 Qxa4+ 44. Kc1 Re1+ 45. Kd2 Qa1 46. Qg4+ Kf8 47. Qc8+ Re8 48. Qc5+ Kg7 49. Qb5 Qe1+ 50. Kc2 Qe2+ 51. Qxe2 Rxe2+ 52. Kb1 f5 53. Kc1 f4 |
| ECO B12 in 2004 play it! sos defeats white's shredder in 136 moves | 1. e4 c6 2. d4 d5 3. e5 Bf5 4. h4 h6 5. g4 Bd7 6. h5 c5 7. c3 e6 8. f4 Qb6 9. Nf3 Nc6 10. Rh2 Rc8 11. Rc2 cxd4 12. cxd4 Bb4+ 13. Kf2 Ba5 14. a3 Qd8 15. Be3 Nge7 16. b4 Bb6 17. Nc3 O-O 18. Bd3 f5 19. exf6 Rxf6 20. Ne2 a6 21. Rac1 Rf8 22. Kg3 Rc7 23. Nc3 Be8 24. Na4 Ba7 25. Nc5 Bf7 26. Qe1 Bb8 27. Re2 Qe8 28. Bd2 Nd8 29. Ne5 Nec6 30. Nxc6 Nxc6 31. Qf2 Nd8 32. Rce1 Rc8 33. Qf3 Kh8 34. Bb1 Rc6 35. Bc2 Rc8 36. Ba4 b5 37. Bc2 Qc6 38. a4 Bd6 39. Qd3 Bg8 40. Rc1 Qc7 41. Rf2 a5 42. Bb1 Qe7 43. axb5 axb4 44. Qe3 Rb8 45. Bd3 b3 46. Rb1 Rc8 47. Nxb3 Nb7 48. Rff1 Rf6 49. Nc1 Rcf8 50. Ne2 Bh7 51. Bxh7 Kxh7 52. Qd3+ Kg8 53. Kh3 Nd8 54. Rfc1 Nf7 55. Rb3 Qb7 56. Qc2 Qb8 57. Rd1 Ng5+ 58. Kg2 Ne4 59. Be3 g6 60. hxg6 Rxg6 61. Kh3 Bxf4 62. Bg1 Bd6 63. Re3 h5 64. Rxe4 dxe4 65. Qxe4 Rxg4 66. Qxe6+ Kh7 67. Qd7+ Rg7 68. Qxg7+ Kxg7 |
| ECO B01 in 1998 play it! sos defeats white's gandalf in 132 moves | 1. e4 d5 2. exd5 Nf6 3. c4 e6 4. dxe6 Bxe6 5. Nf3 Qe7 6. Be2 Bxc4 7. d3 Be6 8. O-O Nc6 9. Nc3 O-O-O 10. Re1 Qd7 11. Ng5 Bg4 12. Be3 Bxe2 13. Qxe2 h6 14. Nge4 Ng4 15. d4 Nxe3 16. fxe3 f5 17. Nf2 g5 18. Qc4 a6 19. Nd3 Na5 20. Qa4 Qxa4 21. Nxa4 Nc6 22. Nac5 Bxc5 23. Nxc5 Nb4 24. Re2 Rhe8 25. a3 Nd5 26. Rae1 a5 27. Nd3 Re4 28. Nc5 Re7 29. Nd3 Rde8 30. Ne5 f4 31. exf4 Nxf4 32. Re3 c6 33. g3 Nd5 34. R3e2 Nc7 35. a4 Nd5 36. Kf1 Kc7 37. Nc4 Rf7+ 38. Rf2 Rxf2+ 39. Kxf2 Rxe1 40. Kxe1 b6 41. Kd2 Nf6 42. Kd3 h5 43. h4 gxh4 44. gxh4 Nd5 45. Ke4 Nb4 46. Ne3 Kb7 47. Nf5 Nc2 48. Kf4 b5 49. axb5 cxb5 50. d5 a4 51. Ke4 Ne1 52. Nd6+ Kb6 53. Nf7 Ng2 54. Ke5 Kc7 55. Ke6 Nf4+ 56. Ke5 Ng6+ 57. Kf5 Nxh4+ 58. Ke6 Ng6 59. d6+ Kc6 60. Nd8+ Kb6 61. Nf7 h4 62. Kd7 Kc5 63. Ke8 Ne5 64. Nxe5 Kxd6 65. Nf7+ Kd5 66. Ng5 b4 |
| ECO B06 in 2003 play it! sos defeats white's quark 1 in 96 moves | 1. e4 g6 2. d4 c6 3. Nc3 d5 4. e5 f6 5. Nf3 Bg7 6. Be2 Nh6 7. O-O fxe5 8. dxe5 O-O 9. Qd4 Nf5 10. Qb4 a5 11. Qb3 Nd7 12. g4 Nh6 13. h3 Qc7 14. Be3 Nxe5 15. Nxe5 Qxe5 16. Bc5 a4 17. Qa3 Rf7 18. Rae1 Qg5 19. f4 Qh4 20. Kg2 Nxg4 21. Nxd5 Ne3+ 22. Nxe3 Bxh3+ 23. Kg1 Bxf1 24. Rxf1 Rxf4 25. Ng2 Rxf1+ 26. Bxf1 Bd4+ 27. Bxd4 Qxd4+ 28. Qe3 Rd8 29. Bd3 e5 30. Qxd4 Rxd4 31. Kf2 a3 32. b3 Kg7 33. Ke3 Kf6 34. Ne1 h5 35. Nf3 Rg4 36. Be2 h4 37. Nxe5 Rg3+ 38. Kf4 g5+ 39. Ke4 h3 40. Ng4+ Kg6 41. Ne5+ Kg7 42. Ng4 h2 43. Nxh2 Rg2 44. Kd3 Rxh2 45. Bf3 Kf6 46. Bg4 Ke5 47. Bc8 c5 48. Bxb7 g4 |
| ECO B06 in 2004 play it! sos defeats white's chess tiger 1 in 134 moves | 1. e4 g6 2. d4 Bg7 3. Nf3 d6 4. c3 Nf6 5. Bd3 O-O 6. O-O Nbd7 7. Re1 e5 8. Nbd2 b6 9. Nc4 Bb7 10. Bg5 h6 11. Bh4 Re8 12. dxe5 dxe5 13. Bc2 Qe7 14. Ba4 g5 15. Bg3 Rad8 16. Qc2 Qc5 17. Nfd2 b5 18. b4 Qc6 19. Na5 Qb6 20. Nxb7 Qxb7 21. Bb3 c5 22. a4 c4 23. Ba2 a6 24. Bb1 Nh5 25. Nf1 Ndf6 26. Ne3 Rd3 27. Qc1 Nxe4 28. Nf5 Nexg3 29. hxg3 Rdd8 30. axb5 axb5 31. Be4 Qd7 32. Ra6 Re6 33. Ra5 Rf6 34. Bc2 Qe8 35. Rd1 Rb8 36. Qe3 e4 37. Nd6 Rxd6 38. Rxd6 Nf6 39. Rb6 Rd8 40. Rbxb5 Ng4 41. Qe2 e3 42. fxe3 Nxe3 43. Rb7 Bxc3 44. Ba4 Qe6 45. Kh1 Bd4 46. g4 Qe4 47. Rd7 Rxd7 48. Bxd7 c3 49. Ba4 Qb1+ 50. Kh2 Kg7 51. Rf5 Qxb4 52. Bc2 Qb2 53. Qf3 Nxf5 54. Qxf5 Qc1 55. Qd3 Qg1+ 56. Kh3 Qh1+ 57. Kg3 Qh4+ 58. Kf3 Qf2+ 59. Ke4 Bf6 60. Kd5 Qxg2+ 61. Qe4 Qg1 62. Qh7+ Kf8 63. Qxh6+ Ke7 64. Qh7 Qd4+ 65. Kc6 Qxg4 66. Bb3 Qc8+ 67. Kb5 Qb8+ |
| ECO B00 in 1993 play it! sos defeats white's gandalf x in 127 moves | 1. e4 Nc6 2. d4 d5 3. e5 f6 4. Nf3 Bg4 5. Bb5 Qd7 6. Nc3 O-O-O 7. Be3 e6 8. O-O Bb4 9. a4 Bxc3 10. bxc3 Bxf3 11. Qxf3 fxe5 12. Qg3 Nf6 13. Bxc6 Qxc6 14. dxe5 Ne4 15. Qxg7 Kb8 16. Ra3 Rdg8 17. Qe7 d4 18. cxd4 Nd2 19. g3 Nxf1 20. Kxf1 Re8 21. Qc5 Qh1+ 22. Ke2 Qxh2 23. c4 Qg2 24. a5 Rhf8 25. d5 exd5 26. Qxa7+ Kc8 27. a6 Qf3+ 28. Kd2 dxc4 29. Bd4 Qd5 30. axb7+ Qxb7 31. Qa8+ Qxa8 32. Rxa8+ Kd7 33. Ra4 Kc6 34. Kc3 Kd5 35. Ra5+ Ke4 36. Kxc4 Rf3 37. Ra1 Re6 38. Re1+ Kf5 39. Rh1 Re7 40. Rh6 Kg5 41. Ra6 Kg4 42. Ra8 Kf5 43. Rf8+ Ke4 44. Rxf3 Kxf3 45. Kc5 Ke4 46. f4 Rd7 47. Bf2 Rd2 48. Be1 Rc2+ 49. Kb5 Kd5 50. Ba5 Rc1 51. g4 h6 52. Bb4 Rb1 53. Ka4 c5 54. Bd2 Kc4 55. Ka5 Kd3 56. f5 Kxd2 57. f6 Rf1 58. Kb5 Ke3 59. Kxc5 Ke4 60. Kd6 Rf4 61. Ke7 Rxg4 62. f7 Rf4 63. e6 Ke5 64. f8=B |
| ECO D10 in 2004 play it! sos defeats white's hiarcs by checkmate in 102 moves | 1. d4 d5 2. c4 c6 3. Nc3 Nf6 4. cxd5 cxd5 5. Bf4 Nc6 6. Nf3 Bf5 7. e3 e6 8. Bb5 Bb4 9. Ne5 O-O 10. Bxc6 bxc6 11. Nxc6 Bxc3+ 12. bxc3 Qe8 13. Ne5 Ne4 14. g4 Nxc3 15. Qd2 Be4 16. O-O f6 17. Qxc3 fxe5 18. dxe5 Bf3 19. h3 h5 20. g5 Qg6 21. Rac1 Rab8 22. Qd4 Rb7 23. Kh2 a5 24. Qc5 h4 25. Qxa5 d4 26. Qd2 d3 27. Rb1 Rd7 28. Rfc1 Qh5 29. Rg1 Be4 30. Rg4 Bf5 31. Qd1 Bxg4 32. hxg4 Qg6 33. Kh3 d2 34. Rb2 Qd3 35. Rb3 Qc4 36. Rb1 Qxa2 37. Rb3 Qxb3 38. Qxb3 d1=Q 39. Qxe6+ Kh8 40. Qc6 Rd2 41. Qg2 Qc2 42. e6 Rxf2 43. e7 Re8 44. Qd5 g6 45. Qh1 Rxe7 46. Be5+ Rxe5 47. Qa8+ Kg7 48. Qa7+ Rf7 49. Qxf7+ Kxf7 50. e4 Kg8 51. Kxh4 Qh2# |
| ECO D15 in 2000 play it! sos defeats white's pacque expert in 89 moves | 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 e6 5. Bg5 h6 6. Bxf6 Qxf6 7. e3 Nd7 8. Bd3 dxc4 9. Bxc4 g6 10. O-O Bg7 11. Ne4 Qe7 12. Qc2 O-O 13. Bb3 e5 14. a3 exd4 15. exd4 Nf6 16. Nxf6+ Qxf6 17. Qc3 Be6 18. Rac1 Rfe8 19. Bxe6 Qxe6 20. Qb4 Qe7 21. Qc4 Qd6 22. Rfe1 Rxe1+ 23. Rxe1 Rd8 24. Qc1 Bxd4 25. Qxh6 Bxb2 26. Ng5 Qe7 27. Qh7+ Kf8 28. Nf3 Qxa3 29. Ng5 Qb3 30. Qh6+ Bg7 31. Qh4 Rd1 32. Nf3 Bc3 33. Qh6+ Kg8 34. Qe3 Rb1 35. g3 Bxe1 36. Qe8+ Kh7 37. Nxe1 a5 38. f4 a4 39. Qe7 a3 40. Qh4+ Kg7 41. Qg5 Rxe1+ 42. Kf2 Qd1 43. Qe5+ Rxe5 44. fxe5 a2 45. Ke3 |