| ECO B41 in 1993 play it! nijboer friso defeats black's van wely loek in 85 moves | 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. f4 a6 7. Qf3 Qb6 8. Nb3 Qc7 9. g4 b5 10. Bd3 Bb7 11. g5 Nfd7 12. Be3 Nc6 13. Qh3 b4 14. Ne2 g6 15. O-O-O Bg7 16. Kb1 O-O 17. f5 exf5 18. exf5 Rfe8 19. Rhf1 Nce5 20. Nf4 Nc5 21. Bd4 Ncxd3 22. cxd3 a5 23. Rc1 Qd8 24. Ne6 fxe6 25. f6 Nf7 26. fxg7 Nxg5 27. Qe3 Nf7 28. Bb6 Qh4 29. Rc7 Nd8 30. Rf4 Qxh2 31. Rf8+ Rxf8 32. gxf8=Q+ Kxf8 33. Qg5 Kg8 34. Qe7 Qh6 35. Be3 g5 36. Rd7 Qg6 37. Rxd8+ Rxd8 38. Qxd8+ Kg7 39. Qxd6 Bd5 40. Qe5+ Kf7 41. Nc5 h6 42. Qc7+ Kg8 43. Qxa5 |
| ECO B80 in 2000 play it! nijboer friso defeats black's wemmers xander in 123 moves | 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e6 6. Be3 Nc6 7. Be2 Be7 8. O-O O-O 9. f4 Qc7 10. Kh1 Rd8 11. Qe1 Nxd4 12. Bxd4 e5 13. Be3 exf4 14. Bxf4 Be6 15. Rd1 Nd7 16. Nb5 Qxc2 17. Bd3 Qc5 18. b4 Qh5 19. Nxd6 Bxd6 20. Bxd6 Ne5 21. Be2 Ng4 22. Qg3 Qh6 23. Bf4 Qg6 24. e5 Nh6 25. Qh4 Re8 26. a3 Nf5 27. Qf2 b6 28. h3 Rad8 29. Bf3 Bb3 30. Rxd8 Rxd8 31. Kh2 h6 32. Be4 Qe6 33. Bxf5 Qxf5 34. Qg3 Rd3 35. Bxh6 Rxg3 36. Rxf5 Rc3 37. Rg5 g6 38. Rg4 Rc4 39. Rg3 Ba2 40. Bg5 Kf8 41. Rd3 Rc8 42. Rd7 Ra8 43. Bf6 Be6 44. Rd4 Rc8 45. g4 Ke8 46. h4 Bd7 47. h5 gxh5 48. gxh5 Bf5 49. Kg3 Be6 50. h6 Bf5 51. Kf4 Bb1 52. b5 Bc2 53. Ke3 Bb1 54. Kd2 Rc2+ 55. Kd1 Rc8 56. Rh4 Bc2+ 57. Kd2 Bh7 58. Rg4 Rc2+ 59. Kd1 Rc3 60. Rg7 Rd3+ 61. Ke2 Bf5 62. Rg8+ |
| ECO B33 in 1984 play it! nijboer friso defeats black's van kooten d in 67 moves | 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e6 6. Ndb5 d6 7. Bf4 e5 8. Bg5 a6 9. Na3 b5 10. Nd5 Be7 11. Bxf6 Bxf6 12. c3 O-O 13. Nc2 Bg5 14. a4 bxa4 15. Rxa4 a5 16. Bc4 Be6 17. O-O Rb8 18. b3 Ne7 19. Nxe7+ Bxe7 20. Ne3 Rc8 21. Qa1 Qb6 22. Rxa5 Bxc4 23. bxc4 Qc6 24. Nd5 Bd8 25. Ra4 f5 26. exf5 Rxf5 27. Qa2 Rf7 28. Rb1 Bg5 29. Rb6 Qd7 30. Ra8 Rff8 31. Rxc8 Qxc8 32. c5 Qxc5 33. Rc6 Rxf2 34. Nf6+ |
| ECO B32 in 1996 play it! nijboer friso defeats black's miles anthony j in 69 moves | 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Qc7 5. Be2 e6 6. O-O Nf6 7. Nc3 Bb4 8. a3 Bxc3 9. Nb5 Qe5 10. Nxc3 Nxe4 11. Nxe4 Qxe4 12. Bd3 Qh4 13. b4 b6 14. Bb2 Bb7 15. Re1 Qg5 16. Re3 Ne5 17. Rg3 Qf6 18. Bb5 O-O 19. Qc1 d5 20. f4 d4 21. fxe5 Qxe5 22. Bf1 Be4 23. Qd2 Rad8 24. Rd1 Qc7 25. Bxd4 e5 26. Qe1 f5 27. Ba1 Rxd1 28. Qxd1 f4 29. Rg5 Re8 30. Qe1 h6 31. Rh5 Qxc2 32. Rxe5 Rxe5 33. Bxe5 f3 34. gxf3 Bxf3 35. Qg3 |
| ECO B32 in 1988 play it! nijboer friso defeats black's meulders richard in 97 moves | 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 e6 5. Nc3 Qc7 6. Be2 a6 7. O-O Nf6 8. Kh1 Nxd4 9. Qxd4 Bc5 10. Qd3 b5 11. f4 Bb7 12. Bf3 O-O 13. e5 Ne8 14. Ne4 Be7 15. a4 f5 16. Nd2 b4 17. Bxb7 Qxb7 18. Nc4 Rc8 19. b3 Rf7 20. a5 Rc6 21. Bb2 Bf8 22. Rad1 Nc7 23. Qf3 Nb5 24. Rd3 d5 25. exd6 Nxd6 26. Ne5 Rxc2 27. Nxf7 Qxf3 28. Rdxf3 Kxf7 29. R3f2 Rxf2 30. Rxf2 Ne4 31. Rc2 Bc5 32. g3 g6 33. Kg2 Ke7 34. Rc4 Kd7 35. Bd4 Bd6 36. Rc2 h6 37. h4 h5 38. Kf3 Be7 39. Be5 Bc5 40. Ke2 Kd8 41. Kd3 Kd7 42. Rc1 Kd8 43. Bd4 Bd6 44. Rc6 Kd7 45. Rxa6 Nxg3 46. Ra8 Ne4 47. a6 Nc5+ 48. Bxc5 Bxc5 49. a7 |
| ECO B90 in 1999 play it! nijboer friso defeats black's bosch jeroen in 121 moves | 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. f3 Nbd7 7. Be3 d5 8. Nxd5 Nxd5 9. exd5 Qa5+ 10. Qd2 Qxd5 11. c4 Qd6 12. b4 b6 13. Bd3 e5 14. Nc2 Be7 15. Rd1 Qc7 16. O-O O-O 17. Bf2 a5 18. a3 Rd8 19. Rfe1 axb4 20. axb4 Bb7 21. Qc3 Nf6 22. Bg3 Nd5 23. Qxe5 Qxe5 24. Rxe5 Nc3 25. Rde1 Bf8 26. R5e3 Na2 27. Bc7 Rdc8 28. Bxb6 Nxb4 29. Nxb4 Bxb4 30. Rb1 Bf8 31. Bf1 g6 32. Rc3 Ba6 33. Bf2 Rc6 34. c5 Bxf1 35. Kxf1 Rac8 36. Rb5 f5 37. Ke2 Bg7 38. Rc2 Rd8 39. Rd2 Re6+ 40. Kd1 Ra8 41. Bd4 Bh6 42. Re2 Rea6 43. Reb2 Kf7 44. Rb7+ Ke6 45. Re2+ Kd5 46. Rd7+ Kc6 47. Rd6+ Kb5 48. Rb2+ Kc4 49. Rc2+ Kb3 50. Rxa6 Rxa6 51. c6 Bf4 52. c7 Bxc7 53. Rxc7 Rd6 54. Ke2 Rxd4 55. Rxh7 Rc4 56. Rg7 Rc2+ 57. Kf1 Rc6 58. Kf2 f4 59. h4 Rf6 60. Rc7 Kb4 61. Kg1 |
| ECO B75 in 1999 play it! nijboer friso defeats black's janssen ruud in 71 moves | 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Bg7 7. f3 Nc6 8. Qd2 O-O 9. O-O-O Nxd4 10. Bxd4 Be6 11. Kb1 Qc7 12. Bb5 a6 13. Ba4 b5 14. Bb3 b4 15. Na4 Rab8 16. Bxe6 fxe6 17. b3 Qc6 18. h4 Rfd8 19. g4 e5 20. Bb2 h6 21. g5 Nh5 22. gxh6 Bf6 23. c4 Nf4 24. Bc1 Kh7 25. Rdg1 e6 26. Rg4 d5 27. exd5 exd5 28. Qc2 d4 29. Bxf4 d3 30. Qg2 exf4 31. Rxg6 d2 32. Rg7+ Kh8 33. Qg6 d1=Q+ 34. Rxd1 Rxd1+ 35. Kc2 Rd2+ 36. Kxd2 |
| ECO B30 in 2004 play it! nijboer friso defeats black's krasenkow michal in 73 moves | 1. e4 c5 2. Nf3 Nc6 3. Nc3 e5 4. Bc4 Be7 5. d3 d6 6. O-O Nf6 7. Ng5 O-O 8. f4 Bg4 9. Qe1 exf4 10. Bxf4 Nd4 11. Qd2 Qd7 12. Be3 h6 13. Nf3 Nxf3+ 14. gxf3 Bh3 15. Rf2 Kh7 16. Kh1 Nh5 17. f4 f5 18. Rg1 Bh4 19. Rf3 Bg4 20. Qg2 Bxf3 21. Qxf3 g6 22. Qg2 Qe8 23. Nb5 g5 24. Nc7 Qe7 25. Nxa8 fxe4 26. fxg5 hxg5 27. Qg4 Nf6 28. Qf5+ Kh8 29. Bxg5 Bxg5 30. Qxg5 e3 31. d4 b5 32. Bd3 Qb7+ 33. Rg2 c4 34. Be4 Qf7 35. Qxe3 Qh5 36. Bf3 Nd5 37. Qe6 |
| ECO B41 in 1989 play it! nijboer friso defeats black's andruet gilles in 81 moves | 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. f4 Nc6 7. Nf3 g6 8. Bd3 Bg7 9. O-O O-O 10. Qe1 Nb4 11. Qg3 Nh5 12. Qf2 f5 13. e5 Nxd3 14. cxd3 dxe5 15. fxe5 b6 16. d4 Bb7 17. Bg5 Qd7 18. Rad1 f4 19. Qh4 Rf7 20. Qg4 Qe8 21. Nh4 b5 22. a3 a5 23. Ne2 Qc6 24. Bxf4 Nxf4 25. Nxf4 Raf8 26. Qxe6 Qe4 27. Rf3 g5 28. Nhg6 gxf4 29. Nxf8 Kxf8 30. Qd6+ Kg8 31. e6 Rf6 32. Qd8+ Rf8 33. e7 Qe2 34. exf8=Q+ Bxf8 35. Qg5+ Bg7 36. Rff1 h6 37. Qd8+ Kh7 38. d5 f3 39. gxf3 Qxb2 40. Qd7 Ba8 41. Qf5+ |
| ECO B57 in 1988 play it! nijboer friso defeats black's winants l in 63 moves | 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Bc4 e6 7. Be3 Be7 8. Qe2 a6 9. Bb3 Qc7 10. O-O-O O-O 11. Rhg1 b5 12. g4 Na5 13. g5 Nxb3+ 14. axb3 Nd7 15. f4 b4 16. Nf5 exf5 17. Nd5 Qd8 18. exf5 Re8 19. Bd4 Bf6 20. Qxe8+ Qxe8 21. gxf6 g6 22. Ne7+ Kf8 23. Rd3 Nxf6 24. Bxf6 Qb5 25. Rgd1 Bxf5 26. Rd5 Qe2 27. Nxf5 Rc8 28. R5d2 Qe4 29. Nxd6 Rxc2+ 30. Rxc2 Qxf4+ 31. Kb1 Qxf6 32. Rc8+ |
| ECO B41 in 1995 play it! nijboer friso defeats black's van wely loek in 57 moves | 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. g4 Nc6 7. g5 Nd7 8. Be3 Be7 9. Rg1 a6 10. Rg3 Qc7 11. Qe2 Nc5 12. Nxc6 Qxc6 13. Bg2 b5 14. O-O-O Rb8 15. Bd4 Kf8 16. Qh5 Kg8 17. Bf6 Bf8 18. e5 d5 19. Ne2 b4 20. Nd4 Qc7 21. f4 Ne4 22. Bxe4 dxe4 23. Qe2 Bc5 24. Nc6 Qxc6 25. Rd8+ Bf8 26. Be7 h6 27. Rxf8+ Kh7 28. Rxf7 Kg6 29. Rf6+ |
| ECO B90 in 2006 play it! nijboer friso defeats black's jakubowski krzys in 51 moves | 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be3 e5 7. Nb3 Be6 8. f3 Be7 9. Qd2 Nbd7 10. g4 O-O 11. O-O-O b5 12. g5 Nh5 13. Kb1 Qc7 14. Nd5 Bxd5 15. exd5 f5 16. Rg1 Rfc8 17. Na5 Bd8 18. Nc6 Nb8 19. g6 f4 20. Bf2 Nxc6 21. dxc6 Qxc6 22. Bh3 Nf6 23. gxh7+ Kh8 24. Bxc8 Rxc8 25. Bh4 Ne4 26. Qg2 |
| ECO B20 in 1999 play it! nijboer friso defeats black's bezemer arno in 109 moves | 1. e4 c5 2. Ne2 d6 3. c3 Nf6 4. Ng3 e5 5. Bc4 Nc6 6. d3 d5 7. exd5 Nxd5 8. Qb3 Na5 9. Bb5+ Bd7 10. Qxd5 Bxb5 11. Qxe5+ Qe7 12. Qxe7+ Bxe7 13. c4 Bd7 14. Nc3 Be6 15. Be3 O-O-O 16. O-O-O Nc6 17. Nge2 Rhe8 18. Nf4 Bf5 19. Nfd5 Bf8 20. Rd2 b6 21. h3 h6 22. Rhd1 g5 23. d4 cxd4 24. Bxd4 Nxd4 25. Rxd4 Bc5 26. R4d2 Kb7 27. b4 Bf8 28. Kb2 Bg7 29. Kb3 Be6 30. Nb5 Be5 31. a4 Rd7 32. Ne3 Rxd2 33. Rxd2 a6 34. Nd6+ Bxd6 35. Rxd6 b5 36. Nd5 bxc4+ 37. Kxc4 Rc8+ 38. Kd3 Rc1 39. a5 Rd1+ 40. Ke4 Re1+ 41. Kf3 Rb1 42. Rb6+ Kc8 43. Ne3 Rb2 44. g4 Kc7 45. Kg3 Kd7 46. f4 Rb3 47. Kf3 Bd5+ 48. Ke2 Be4 49. f5 Rb2+ 50. Kd1 h5 51. gxh5 Bf3+ 52. Kc1 Rb3 53. Ng4 Bg2 54. h6 Rxh3 55. h7 |
| ECO B56 in 2005 play it! nijboer friso defeats black's tate emory in 80 moves | 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Bd7 6. f3 e5 7. Nb3 Bc6 8. Be3 Be7 9. Qd2 O-O 10. O-O-O Nbd7 11. g4 Ne8 12. h4 Kh8 13. Kb1 Nc7 14. Nd5 Bxd5 15. exd5 b6 16. g5 f5 17. f4 exf4 18. Bxf4 Nc5 19. Bg2 Nxb3 20. cxb3 a5 21. Rc1 Na6 22. h5 Kg8 23. g6 h6 24. Bxh6 Nc5 25. Bf4 a4 26. b4 Nb3 27. Qe3 Nxc1 28. Qe6+ Kh8 29. h6 Rf6 30. hxg7+ Kxg7 31. Bh6+ Kxg6 32. Qe3 Kf7 33. Bf3 Ke8 34. Bg7 f4 35. Bh5+ Kd7 36. Qxc1 Qc7 37. Bg4+ Kd8 38. Rh8+ Rf8 39. Bxf8 Qxc1+ 40. Kxc1 Kc7 |
| ECO B90 in 2001 play it! nijboer friso defeats black's simutowe amon by checkmate in 49 moves | 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bc4 e6 7. Bb3 Nbd7 8. f4 Nc5 9. Qf3 b5 10. f5 Qd7 11. Bg5 b4 12. fxe6 fxe6 13. Na4 Nxb3 14. axb3 Qb7 15. Bxf6 gxf6 16. Qh5+ Ke7 17. O-O-O Bd7 18. Rhf1 Qc7 19. Rxf6 e5 20. Qf7+ Kd8 21. Ne6+ Bxe6 22. Qxe6 Be7 23. Qxe5 Ke8 24. Rdxd6 Rc8 25. Qh5# |
| ECO B20 in 1999 play it! nijboer friso defeats black's stam bart in 55 moves | 1. e4 c5 2. Ne2 d6 3. c3 g6 4. d4 cxd4 5. cxd4 Bg7 6. Nbc3 Nf6 7. g3 O-O 8. Bg2 Nc6 9. h3 Bd7 10. O-O Rc8 11. Be3 a6 12. Qd2 b5 13. Kh2 Qc7 14. Rfc1 Qb8 15. Nf4 b4 16. Nce2 Rfd8 17. Nd3 a5 18. a3 b3 19. d5 Ne5 20. Nxe5 dxe5 21. Bc5 a4 22. Bxe7 Rxc1 23. Rxc1 Rc8 24. Rxc8+ Qxc8 25. Qa5 Ne8 26. Nc3 Bh6 27. Nxa4 Qc2 28. Qa7 |
| ECO B42 in 1988 play it! nijboer friso defeats black's bischoff klaus in 59 moves | 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Bd3 Nf6 6. O-O d6 7. f4 g6 8. Nf3 Bg7 9. a4 O-O 10. Nc3 Nc6 11. Qe1 Nd7 12. Qg3 Nc5 13. Be3 b6 14. Rad1 Qe7 15. e5 Rd8 16. a5 d5 17. f5 gxf5 18. Bg5 Qf8 19. Bxd8 Qxd8 20. Bxf5 exf5 21. Nxd5 Ne4 22. Qf4 bxa5 23. g4 Qf8 24. gxf5 Qc5+ 25. Kh1 Nf2+ 26. Rxf2 Qxf2 27. Rg1 Nxe5 28. Rxg7+ Kf8 29. Nxe5 Qxf4 30. Rxf7+ |
| ECO B90 in 2002 play it! nijboer friso defeats black's doggers peter in 81 moves | 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. f3 e6 7. Be3 Be7 8. Qd2 O-O 9. g4 Nc6 10. O-O-O Nxd4 11. Bxd4 b5 12. g5 Nd7 13. h4 b4 14. Na4 Rb8 15. Kb1 Bb7 16. b3 Qc7 17. g6 hxg6 18. h5 Ne5 19. hxg6 fxg6 20. Rh3 Bf6 21. Be2 Qe7 22. Be3 Rfd8 23. Bb6 Re8 24. Qxd6 Qxd6 25. Rxd6 Be7 26. Rd1 Rbc8 27. Be3 g5 28. Nb6 Rc7 29. Nc4 Nxc4 30. Bxc4 Bf6 31. Rg1 g4 32. Rxg4 a5 33. Rg1 a4 34. Rd1 axb3 35. cxb3 Kf7 36. Rhh1 Ree7 37. Bd2 Bc3 38. Bxc3 bxc3 39. Kc2 Kf6 40. Kxc3 g5 41. Rdg1 |
| ECO B55 in 1998 play it! nijboer friso defeats black's lehikoinen pertt in 51 moves | 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. f3 e5 6. Nb3 Be6 7. c4 Qc7 8. Be3 Nbd7 9. N3d2 Be7 10. Nc3 O-O 11. Be2 Ne8 12. O-O b6 13. Nd5 Qd8 14. Nxe7+ Qxe7 15. Nb1 Rc8 16. b3 Qf6 17. Nc3 Ra8 18. b4 Rd8 19. Nd5 g5 20. Qa4 Nb8 21. Rac1 h5 22. Rf2 Kh7 23. Rd1 Ng7 24. b5 Rg8 25. Bd3 Na6 26. Rb2 |
| ECO B79 in 2005 play it! nijboer friso defeats black's halay taufik in 73 moves | 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Bg7 7. f3 O-O 8. Qd2 Nc6 9. Bc4 Bd7 10. O-O-O Qa5 11. Bb3 Rfc8 12. h4 Ne5 13. Kb1 b5 14. Ncxb5 Qxd2 15. Bxd2 Rab8 16. Nc3 Be8 17. h5 a5 18. hxg6 hxg6 19. a4 Nc4 20. Bh6 Nb6 21. Bxg7 Kxg7 22. Ka2 Nfd7 23. Rh2 Nc5 24. Rdh1 Ncxa4 25. Bxa4 Bxa4 26. e5 Rg8 27. exd6 e5 28. Rh7+ Kf8 29. Nxa4 exd4 30. Nc5 Rd8 31. Ne4 Nd5 32. Rd1 f5 33. Ng5 Rxd6 34. Rxd4 Ke8 35. Ka1 Rd8 36. Ne6 Rd7 37. Rxd7 |