| ECO B03 in 1988 play it! weyerstrass defeats white's mascini in 73 moves | 1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. c4 Nb6 5. f4 dxe5 6. fxe5 Nc6 7. Be3 Bf5 8. Nc3 e6 9. Nf3 Bg4 10. Be2 Bxf3 11. gxf3 Qh4+ 12. Bf2 Qf4 13. c5 Nd7 14. Ne4 Be7 15. O-O O-O 16. Qa4 f5 17. Ng3 Bxc5 18. Qc4 Nxd4 19. Bxd4 Qxd4+ 20. Kg2 Qxc4 21. Bxc4 Rae8 22. f4 Nb6 23. Bb3 Nd5 24. Kf3 Rd8 25. Rad1 c6 26. Rd3 Rd7 27. Rfd1 Rfd8 28. a3 Kf7 29. Ne2 g6 30. h4 h5 31. Nc3 Nb6 32. Rxd7+ Rxd7 33. Na4 Rxd1 34. Bxd1 Nd7 35. b4 Bd4 36. Be2 b5 37. Nc5 |
| ECO B04 in 1980 play it! weyerstrass defeats white's vlugt in 76 moves | 1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. Nf3 g6 5. Bc4 Nb6 6. Bb3 Bg7 7. Ng5 d5 8. f4 f6 9. Nf3 O-O 10. O-O a5 11. a4 Na6 12. Be3 Bg4 13. Nbd2 Rc8 14. Qe1 c5 15. c3 Qd7 16. Bc2 Bxf3 17. Nxf3 Nc4 18. Bc1 cxd4 19. e6 Qc7 20. f5 dxc3 21. fxg6 Ne5 22. gxh7+ Kh8 23. Bf5 Qb6+ 24. Qf2 Nxf3+ 25. gxf3 Qxf2+ 26. Kxf2 d4 27. bxc3 Rxc3 28. Ba3 Nb4 29. Bxb4 axb4 30. Rab1 b3 31. Rfd1 Bh6 32. Kg3 Rd8 33. Bd3 Rd5 34. Be4 Rg5+ 35. Kh3 f5 36. Bxb7 Rc2 37. Rxd4 Rh5+ 38. Rh4 Bf4 |
| ECO B03 in 1985 play it! weyerstrass defeats white's van der wal in 45 moves | 1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. c4 Nb6 5. exd6 cxd6 6. h3 g6 7. Nf3 Bg7 8. Be2 O-O 9. Nc3 Nc6 10. O-O Bf5 11. Be3 d5 12. c5 Nc4 13. Bxc4 dxc4 14. Qa4 Bd3 15. Rfd1 e5 16. dxe5 Nxe5 17. Nxe5 Bxe5 18. Rac1 f5 19. b3 f4 20. Bd2 f3 21. g3 Bxg3 22. fxg3 f2+ 23. Kg2 |
| ECO B03 in 1989 play it! weyerstrass defeats white's fiorito in 50 moves | 1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. c4 Nb6 5. f4 dxe5 6. fxe5 Nc6 7. Be3 Bf5 8. Nc3 e6 9. Nf3 Bg4 10. Qd2 Bb4 11. Ng5 Qd7 12. h3 Bh5 13. g4 Bg6 14. a3 Be7 15. Rd1 h5 16. Rg1 O-O-O 17. Nce4 hxg4 18. hxg4 f6 19. exf6 gxf6 20. Nc5 Bxc5 21. dxc5 Qe7 22. Qf2 fxg5 23. cxb6 axb6 24. Rc1 Rhf8 25. Qg3 Nd4 |
| ECO B04 in 1990 play it! weyerstrass defeats white's mishnaevsky in 24 moves | 1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. Nf3 g6 5. Bc4 Nb6 6. Bb3 Bg7 7. a4 a5 8. O-O O-O 9. h3 Nc6 10. Qe2 dxe5 11. Nc3 Nxd4 12. Nxd4 exd4 |
| ECO D34 in 1976 play it! weyerstrass defeats white's donner in 90 moves | 1. d4 d5 2. c4 e6 3. Nc3 c5 4. cxd5 exd5 5. Nf3 Nc6 6. g3 Nf6 7. Bg2 Be7 8. O-O O-O 9. Be3 Bg4 10. dxc5 Bxf3 11. Bxf3 d4 12. Bxc6 dxe3 13. Bxb7 exf2+ 14. Kh1 Bxc5 15. e3 Rb8 16. Bf3 Bxe3 17. Qe2 Re8 18. Rad1 Qc7 19. Rxf2 Bxf2 20. Qxf2 Qb6 21. Qxb6 Rxb6 22. Rd2 h6 23. Kg2 g5 24. h3 Kg7 25. g4 Re7 26. Ne2 Rd7 27. Rc2 Nd5 28. Bxd5 Rxd5 29. Ng3 Ra5 30. b3 Ra3 31. Ne4 Rba6 32. Nc3 Rc6 33. Kf3 a5 34. Ke3 Rxa2 35. Rxa2 Rxc3+ 36. Kf2 Rxb3 37. Rxa5 Rxh3 38. Kg2 Re3 39. Ra8 Re7 40. Kf3 f6 41. Rb8 Re5 42. Rb7+ Kg6 43. Rb6 Re1 44. Kf2 Re4 45. Kg3 Rf4 |
| ECO D30 in 1987 play it! weyerstrass defeats white's de boer in 120 moves | 1. d4 d5 2. c4 e6 3. Nf3 c5 4. cxd5 exd5 5. Nc3 Nc6 6. g3 Nf6 7. Bg2 Be7 8. O-O O-O 9. dxc5 Bxc5 10. Bg5 Be6 11. Rc1 Be7 12. Nd4 h6 13. Be3 Qd7 14. Nxc6 bxc6 15. Na4 Bh3 16. Bc5 Bxg2 17. Kxg2 Rfe8 18. f3 Rad8 19. Qc2 d4 20. e4 dxe3 21. Bxe3 Nd5 22. Bf2 Nb4 23. Qc4 Nd3 24. Rcd1 Bg5 25. Nc5 Nxb2 26. Nxd7 Nxc4 27. f4 Be7 28. Rfe1 Ba3 29. Rxe8+ Rxe8 30. Rd4 Nb6 31. Rd3 Bb4 32. Ne5 Rc8 33. Rb3 c5 34. a3 Bd2 35. Nf3 Nc4 36. Rb5 Be3 37. Ne5 Nd6 38. Ra5 Bxf2 39. Kxf2 c4 40. Rd5 Ne4+ 41. Ke3 f5 42. Kd4 c3 43. Nd3 g6 44. Nc1 Rc7 45. a4 Kf7 46. a5 Ke6 47. g4 Nd6 48. Re5+ Kd7 49. gxf5 Nxf5+ 50. Kd3 Ne7 51. Nb3 c2 52. Kd2 Kd6 53. Kc1 Nd5 54. Re2 Nxf4 55. Rd2+ Ke5 56. Nd4 Nd5 57. Nf3+ Kf4 58. Rxd5 Kxf3 59. Rd6 Rg7 60. Kxc2 h5 |
| ECO D06 in 1980 play it! weyerstrass defeats white's sargon compute by checkmate in 54 moves | 1. d4 d5 2. c4 Nf6 3. cxd5 g6 4. Qa4+ c6 5. dxc6 Nxc6 6. Nf3 Bg4 7. Nbd2 Bg7 8. Qb5 O-O 9. e3 Qd7 10. Bc4 a6 11. Qc5 e5 12. Nxe5 Nxe5 13. Qxe5 Rfe8 14. Qc5 Rac8 15. Qb6 Rc6 16. Qb3 b5 17. Be2 Bxe2 18. Kxe2 Qxd4 19. Nf3 Qg4 20. g3 Nd7 21. Bd2 Ne5 22. Qd5 Rc5 23. Qb7 Rc6 24. Rhc1 Qxf3+ 25. Kf1 Ng4 26. Be1 Nxe3+ 27. Kg1 Qg2# |
| ECO D34 in 1983 play it! weyerstrass defeats white's van schijndel in 70 moves | 1. d4 d5 2. c4 e6 3. Nc3 c5 4. cxd5 exd5 5. Nf3 Nc6 6. g3 Nf6 7. Bg2 Be7 8. O-O O-O 9. dxc5 Bxc5 10. Na4 Be7 11. Be3 Re8 12. Rc1 Bg4 13. h3 Bxf3 14. Bxf3 Qd7 15. Bg2 d4 16. Bg5 Ne4 17. Bxe7 Qxe7 18. Qc2 f5 19. Rfd1 Rad8 20. Qc4+ Kh8 21. Nc5 Rd6 22. Nd3 h5 23. h4 g5 24. hxg5 Rg8 25. g6 Rdxg6 26. Nf4 Rh6 27. Qd5 Qh7 28. Bh3 h4 29. Bxf5 hxg3 30. Qxe4 g2 31. Bg6 Rgxg6 32. Nxg6+ Rxg6 33. Qxg2 Rxg2+ 34. Kxg2 Qe4+ 35. Kg3 Qxe2 |
| ECO D06 in 1980 play it! weyerstrass defeats white's sargon compute in 116 moves | 1. d4 d5 2. c4 Nf6 3. cxd5 g6 4. Qa4+ c6 5. dxc6 Nxc6 6. Nf3 Bg4 7. Bg5 Bxf3 8. exf3 Qxd4 9. Qxd4 Nxd4 10. Na3 Bg7 11. Bc4 O-O 12. O-O Rfd8 13. Rfe1 Rd7 14. Re5 Nc6 15. Re2 Rad8 16. Rae1 h6 17. Be3 Nd5 18. Bc5 Nf4 19. Re4 e5 20. Bb5 Nd3 21. Bxd3 Rxd3 22. Nc2 b6 23. Ba3 f5 24. Rc4 Nd4 25. Nb4 Rd2 26. Nc6 Nxc6 27. Rxc6 e4 28. fxe4 Bd4 29. Rf1 fxe4 30. Rxg6+ Kh7 31. Re6 Re2 32. b3 Rc8 33. Re7+ Kg6 34. Re6+ Kh5 35. Rd6 Rxa2 36. Rd5+ Kg6 37. Rxd4 Rxa3 38. Re1 Rxb3 39. Rdxe4 Rf8 40. f3 a5 41. Rd4 b5 42. Kf2 a4 43. Re5 a3 44. Rg4+ Kf6 45. Rh5 Rh8 46. Rf4+ Kg6 47. Rhh4 Rb2+ 48. Kg3 Rg8 49. Rfg4+ Kh7 50. Rxg8 Kxg8 51. Rxh6 a2 52. Rg6+ Kf7 53. Ra6 b4 54. Ra7+ Kf6 55. Ra6+ Ke5 56. f4+ Kd5 57. f5 Rb3+ 58. Kf4 Ra3 |
| ECO D34 in 1976 play it! weyerstrass defeats white's neufeglise in 88 moves | 1. d4 d5 2. c4 e6 3. Nc3 c5 4. cxd5 exd5 5. Nf3 Nc6 6. g3 Nf6 7. Bg2 Be7 8. O-O O-O 9. Be3 Ng4 10. Bf4 Be6 11. dxc5 Bxc5 12. e3 Rc8 13. h3 Nf6 14. g4 Re8 15. Nd4 Nxd4 16. exd4 Bb4 17. Ne2 Qd7 18. Nc1 Rc4 19. b3 Rcc8 20. Nd3 Bc3 21. Ne5 Qb5 22. Rc1 Ne4 23. g5 Qb4 24. Be3 Nd6 25. Nd3 Qa5 26. Nc5 b6 27. Nxe6 fxe6 28. Rc2 b5 29. Qd3 b4 30. Rfc1 Nf5 31. Bf3 Rcd8 32. Bg4 Nxe3 33. fxe3 Qc7 34. Kg2 e5 35. Rf1 Qe7 36. g6 hxg6 37. Qxg6 Rd6 38. Qd3 exd4 39. exd4 Qe4+ 40. Qxe4 dxe4 41. Rcf2 Bxd4 42. Rf7 Rf6 43. Bh5 Re5 44. R1xf6 gxf6 |
| ECO D34 in 1987 play it! weyerstrass defeats white's de boer in 64 moves | 1. d4 d5 2. c4 e6 3. Nc3 c5 4. cxd5 exd5 5. Nf3 Nc6 6. g3 Nf6 7. Bg2 Be7 8. O-O O-O 9. dxc5 Bxc5 10. Bg5 Be6 11. Rc1 Be7 12. Nd4 h6 13. Be3 Qd7 14. Nxc6 bxc6 15. Na4 Bh3 16. Bc5 Bxg2 17. Kxg2 Rfe8 18. f3 Rad8 19. Qc2 d4 20. e4 dxe3 21. Bxe3 Nd5 22. Bf2 Nb4 23. Qc4 Nd3 24. Rcd1 Bg5 25. Nc5 Nxb2 26. Nxd7 Nxc4 27. f4 Be7 28. Rfe1 Ba3 29. Rxe8+ Rxe8 30. Rd4 Nb6 31. Rd3 Bb4 32. Ne5 Rc8 |
| ECO A40 in 1974 play it! weyerstrass defeats white's snijders in 100 moves | 1. d4 e6 2. e4 d5 3. exd5 exd5 4. Bd3 Nc6 5. Ne2 Bd6 6. O-O Nge7 7. Nbc3 Nb4 8. Ng3 O-O 9. Nb5 Nxd3 10. Qxd3 Ng6 11. Nxd6 Qxd6 12. Re1 Bd7 13. Bd2 Qb6 14. a4 Rfe8 15. Rxe8+ Rxe8 16. Rb1 Bxa4 17. Ra1 Bb5 18. Qb3 Bc6 19. Qxb6 axb6 20. Re1 Rxe1+ 21. Bxe1 Nf4 22. f3 g6 23. Bd2 Ne6 24. Be3 Ba4 25. b3 Bb5 26. b4 Kf8 27. Kf2 Ke7 28. Ne2 Bxe2 29. Kxe2 Kd6 30. c3 Kc6 31. Kd3 g5 32. g3 f5 33. Kc2 Kb5 34. Kb3 c6 35. h3 h6 36. g4 f4 37. Bf2 Ng7 38. Bg1 Ne8 39. Bf2 Nd6 40. Bg1 Nc4 41. Kc2 Ka4 42. Bf2 Ka3 43. Be1 Ka2 44. Bf2 Na3+ 45. Kd3 Kb3 46. h4 b5 47. h5 Nb1 48. Be1 Kb2 49. Bd2 Nxd2 50. Kxd2 b6 |
| ECO A40 in 1973 play it! weyerstrass defeats white's karman a in 68 moves | 1. d4 e6 2. c4 Nf6 3. Nc3 Bb4 4. Nf3 b6 5. e3 Bb7 6. Be2 O-O 7. O-O Ne4 8. Qc2 f5 9. Nd2 Bxc3 10. bxc3 c5 11. Ba3 Nxd2 12. Qxd2 d6 13. d5 e5 14. f3 Nd7 15. Bc1 Qe7 16. h3 Rf7 17. g3 Nf6 18. Kg2 g6 19. a4 a5 20. g4 Raf8 21. g5 Nd7 22. h4 Rg7 23. f4 e4 24. Rh1 Kf7 25. Qc2 Rh8 26. Bd2 Ba6 27. Be1 h5 28. Kg3 Rb8 29. Kh2 Rb7 30. Ra3 Rg8 31. Qb1 Rgb8 32. Bf1 Kg7 33. Rb3 Qf7 34. Bd2 Qe8 |
| ECO A40 in 1990 play it! weyerstrass defeats white's van veldhoven in 72 moves | 1. d4 e6 2. Nf3 d5 3. a3 c6 4. Bd2 a5 5. Nc3 f5 6. Ne5 Nf6 7. e3 Bd6 8. Be2 O-O 9. O-O b6 10. f4 Ba6 11. Bxa6 Rxa6 12. Nf3 Qe8 13. Qe1 Ra7 14. Ne2 Ne4 15. c3 c5 16. Ng3 Nxg3 17. Qxg3 Nd7 18. b4 c4 19. Ng5 Nf6 20. Qe1 h6 21. Nf3 Ne4 22. g3 g5 23. Kh1 Qh5 24. Kg2 axb4 25. cxb4 Rfa8 26. Qc1 c3 27. Be1 Bxb4 28. Qc2 Rxa3 29. Rxa3 Rxa3 30. Ng1 Qe8 31. fxg5 hxg5 32. Nh3 Qa4 33. Qd3 Qa6 34. Qd1 Ra2+ 35. Kg1 Qe2 36. Qxe2 Rxe2 |
| ECO A40 in 1985 play it! weyerstrass defeats white's mauritz in 98 moves | 1. d4 e6 2. c4 d5 3. cxd5 exd5 4. Nc3 c5 5. e3 Nf6 6. Nf3 Nc6 7. Bb5 Bd6 8. Ne5 Bd7 9. Nxd7 Qxd7 10. dxc5 Bxc5 11. O-O O-O 12. Re1 Rfd8 13. a3 Qf5 14. Bd3 Qe6 15. b4 Bd6 16. f4 Rac8 17. Nb5 Ne4 18. Nxd6 Rxd6 19. Bb2 a6 20. Qh5 f5 21. Rac1 Rcd8 22. b5 axb5 23. Bxb5 Qd7 24. Bd4 Rh6 25. Qd1 Qe7 26. Bxc6 bxc6 27. g3 c5 28. Be5 Ra6 29. a4 Qa7 30. Rc4 Rd7 31. Rxe4 fxe4 32. f5 Rd8 33. Rf1 Qf7 34. Rf4 Rd7 35. Qb3 Rb7 36. Qc2 Qe7 37. Rxe4 dxe4 38. Qc4+ Kf8 39. Qxa6 Rb1+ 40. Kg2 Qxe5 41. Qc8+ Kf7 42. Qd7+ Kf6 43. g4 Rb2+ 44. Kf1 Rb8 45. h4 Qa1+ 46. Kg2 Rb2+ 47. Kg3 Qg1+ 48. Kf4 Rf2+ 49. Kxe4 Qxg4+ |
| ECO A40 in 1991 play it! weyerstrass defeats white's jonkheer in 72 moves | 1. d4 e6 2. Bf4 d5 3. a3 c5 4. e3 Nf6 5. Bd3 Nc6 6. Nf3 Qb6 7. b3 Bd7 8. dxc5 Bxc5 9. O-O O-O 10. b4 Be7 11. Nbd2 Rfd8 12. c4 Rdc8 13. c5 Qd8 14. Nb3 Ne4 15. Bxe4 dxe4 16. Nfd2 f5 17. f3 Bf6 18. Rb1 e5 19. Bg3 exf3 20. Nxf3 Be6 21. Qc2 a6 22. Rbd1 Qe7 23. Nbd2 e4 24. Bd6 Qf7 25. Ne1 Rd8 26. Rc1 b5 27. g3 Rac8 28. Qb1 Ba2 29. Qc2 Nd4 30. exd4 Rxd6 31. Nxe4 fxe4 32. Qxe4 Bxd4+ 33. Kg2 Bd5 34. Rxf7 Kxf7 35. cxd6 Bxe4+ 36. Kh3 Rxc1 |
| ECO A40 in 1982 play it! weyerstrass defeats white's van der berg j in 54 moves | 1. d4 e6 2. c4 d5 3. Nc3 c5 4. Nf3 Nc6 5. cxd5 exd5 6. g3 Nf6 7. Bg2 Be7 8. O-O O-O 9. dxc5 Bxc5 10. Bg5 Be6 11. Rc1 Rc8 12. Nxd5 Qxd5 13. Bxf6 Qxd1 14. Rfxd1 Bb6 15. Bc3 Bxa2 16. Ne5 Nxe5 17. Bxe5 Bb3 18. Rxc8 Rxc8 19. Rd7 Rc1+ 20. Bf1 f6 21. Bf4 Rb1 22. Rxb7 Rxb2 23. Rb8+ Kf7 24. Rb7+ Kg6 25. h4 h5 26. e3 Rb1 27. Rxb6 axb6 |
| ECO A40 in 1982 play it! weyerstrass defeats white's drent in 60 moves | 1. d4 e6 2. c4 d5 3. Nc3 c5 4. Nf3 Nc6 5. cxd5 exd5 6. g3 Nf6 7. Bg2 Be7 8. O-O O-O 9. b3 Ne4 10. Bb2 Bf6 11. Na4 cxd4 12. Nxd4 Bd7 13. Rc1 Re8 14. e3 Nxd4 15. Bxd4 Bb5 16. Re1 Qe7 17. f3 Ng5 18. Nc3 Bc6 19. h4 Bxd4 20. Qxd4 Ne6 21. Qg4 Rad8 22. Rcd1 Qc5 23. Rd3 h5 24. Qxh5 d4 25. Qg4 dxc3 26. b4 Qe5 27. f4 Qf6 28. Bxc6 bxc6 29. Rxd8 Rxd8 30. f5 Nf8 |
| ECO A40 in 1977 play it! weyerstrass defeats white's plukker in 100 moves | 1. d4 e6 2. c4 d5 3. Nc3 c5 4. cxd5 exd5 5. e3 Nf6 6. Bd3 Nc6 7. Nge2 Be7 8. O-O O-O 9. Bd2 Be6 10. Rc1 Rc8 11. Be1 Re8 12. f3 Qd7 13. Bf2 cxd4 14. Nxd4 Nxd4 15. exd4 a6 16. Bg3 Nh5 17. Ne2 Nxg3 18. hxg3 Bf6 19. Rxc8 Rxc8 20. Qb1 g6 21. Rc1 Rxc1+ 22. Qxc1 Qa4 23. Qc3 Qxa2 24. Nf4 Bd7 25. b3 Bc6 26. Ne2 Qa3 27. Kh2 Qe7 28. Qd2 Bg5 29. f4 Bf6 30. Bc2 Kg7 31. Ng1 Qe6 32. Nf3 Bd8 33. Ne5 f6 34. Nf3 Bc7 35. Nh4 Qe7 36. Nf3 Bb5 37. Qc3 Bd6 38. Qd2 Bb4 39. Qf2 Bc3 40. Kh1 Be2 41. f5 g5 42. Ng1 Bg4 43. Nf3 Qe8 44. Kg1 Bxf3 45. gxf3 Be1 46. Qf1 Bxg3 47. Kg2 Bf4 48. Qd3 Qe1 49. b4 Be3 50. Kh2 Qf2+ |