| ECO A07 in 1996 play it! piket jeroen defeats black's jonkman harmen in 78 moves | 1. Nf3 d5 2. g3 Nf6 3. Bg2 e6 4. O-O Be7 5. d4 O-O 6. c4 dxc4 7. Qc2 a6 8. a4 Bd7 9. Rd1 Nc6 10. Ne5 Nxe5 11. dxe5 Nd5 12. Qxc4 c6 13. Qg4 f5 14. exf6 Nxf6 15. Qc4 Qa5 16. Nd2 Qh5 17. Nf3 Rad8 18. Bd2 Bc8 19. a5 Rd5 20. Bc3 Rfd8 21. Rd2 Kh8 22. Rad1 h6 23. h4 Kh7 24. Rd3 Rxd3 25. Rxd3 Rxd3 26. Qxd3+ Qf5 27. Qd4 Kg8 28. Nd2 Qc2 29. Bf3 Qf5 30. Qa7 Nd5 31. e4 Qf8 32. exd5 Bc5 33. Qb8 Bd6 34. Qa8 exd5 35. b4 g5 36. hxg5 hxg5 37. b5 axb5 38. a6 bxa6 39. Qxc6 g4 |
| ECO A22 in 2001 play it! piket jeroen defeats black's tiviakov sergei in 119 moves | 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. g3 d5 5. cxd5 Nxd5 6. Bg2 Nb6 7. O-O Be7 8. Rb1 O-O 9. b4 a6 10. a3 Be6 11. d3 f6 12. Ne4 Nd7 13. Qc2 Bd5 14. Nc3 Bf7 15. Na4 Kh8 16. Rd1 f5 17. d4 e4 18. d5 Nxb4 19. axb4 exf3 20. Bxf3 Ne5 21. Bg2 b6 22. d6 cxd6 23. Bxa8 Qxa8 24. Qc7 Bh5 25. Bf4 Re8 26. Bxe5 dxe5 27. Nxb6 Qe4 28. Nc4 Qxe2 29. Re1 Qa2 30. Nxe5 Bf6 31. Qc4 Qxc4 32. Nxc4 Rd8 33. Ne5 h6 34. Kg2 Kh7 35. Rbc1 Be8 36. h4 Bb5 37. Rc7 Rd4 38. h5 Be8 39. Ng4 fxg4 40. Rxe8 Rd5 41. Re6 Bb2 42. Rxa6 Rxh5 43. Rc4 Rg5 44. Ra5 Rg6 45. b5 Rg5 46. Rc2 Bf6 47. Rc1 Rf5 48. Rb1 Bd4 49. Ra2 Bb6 50. Rbb2 h5 51. Ra6 Bd4 52. Rd2 Bc3 53. Rc2 Bf6 54. Rb6 Kg6 55. Rb8 Kg5 56. Rc4 Rd5 57. Rb4 Be7 58. Rb2 Bf6 59. Rb3 Be5 60. Re8 |
| ECO A13 in 1992 play it! piket jeroen defeats black's kuijf marinus in 77 moves | 1. c4 e6 2. Nc3 d5 3. d4 c5 4. cxd5 cxd4 5. Qa4+ Bd7 6. Qxd4 exd5 7. Qxd5 Nc6 8. e3 Nf6 9. Qb3 Bc5 10. Nf3 Qe7 11. Be2 O-O-O 12. Bd2 Kb8 13. Rc1 Be6 14. Qa4 Rhg8 15. O-O g5 16. Rfd1 Bd7 17. Nb5 Ne4 18. Qc4 g4 19. Nfd4 Ne5 20. Qc2 f5 21. Ba5 Rc8 22. Bc7+ Ka8 23. Qb3 Nf3+ 24. Bxf3 gxf3 25. Bg3 f4 26. Nc7+ Rxc7 27. Qxg8+ Rc8 28. Qd5 fxg3 29. hxg3 fxg2 30. b4 Bb6 31. Nf5 Bxf5 32. Qxf5 Rxc1 33. Rxc1 a6 34. Qf4 Ka7 35. Kxg2 Qxb4 36. Rc8 Bc5 37. Qb8+ Kb6 38. Qc7+ Ka7 39. Qd8 |
| ECO A10 in 1970 play it! piket jeroen defeats black's marovic drazen in 63 moves | 1. c4 g6 2. d4 Bg7 3. Nc3 c5 4. d5 d6 5. e4 Nf6 6. Bd3 O-O 7. Bg5 h6 8. Bh4 e5 9. dxe6 Bxe6 10. f4 Re8 11. Nf3 Bg4 12. O-O Qd7 13. h3 Bxf3 14. Qxf3 Nc6 15. Rae1 a6 16. Kh1 b5 17. cxb5 Nd4 18. Qd1 axb5 19. e5 dxe5 20. Bxf6 Bxf6 21. Bxb5 Qb7 22. Bxe8 Rxe8 23. Ne4 Be7 24. fxe5 Qxb2 25. Qa4 Rf8 26. Rf2 Qb7 27. Qc4 Qc6 28. Nf6+ Kg7 29. Ref1 Ne6 30. Nh7 Kxh7 31. Rxf7+ Kh8 32. Rxe7 |
| ECO A11 in 2000 play it! piket jeroen defeats black's magem badals jor in 121 moves | 1. c4 c6 2. Nf3 d5 3. e3 Nf6 4. Nc3 a6 5. b3 Bg4 6. Be2 e6 7. Bb2 Bd6 8. h3 Bh5 9. d3 Nbd7 10. g4 Bg6 11. g5 Nh5 12. Rg1 h6 13. Nh4 hxg5 14. Nxg6 fxg6 15. Qc2 Nf8 16. O-O-O Qe7 17. Kb1 Nf6 18. Bf1 Rh5 19. Bg2 Ba3 20. Ba1 O-O-O 21. Na4 Kb8 22. c5 N6d7 23. d4 Bb4 24. Nb2 Ba5 25. b4 Bc7 26. a4 e5 27. b5 exd4 28. exd4 Ba5 29. Rd3 Ne6 30. Rgd1 Rh4 31. Qe2 Qf6 32. Rb3 Nxd4 33. Rxd4 Qxd4 34. bxc6 Nxc5 35. Nd3 Qxa1+ 36. Kxa1 Nxb3+ 37. Kb2 Nd2 38. Qe7 Nc4+ 39. Ka2 Bc7 40. Nc5 Na5 41. cxb7 Rd6 42. Qe8+ Ka7 43. Qa8+ Kb6 44. b8=Q+ Bxb8 45. Qxa6+ Kxc5 46. Qxa5+ Kc6 47. Qb5+ Kc7 48. Bxd5 Rxd5 49. Qxd5 Rxa4+ 50. Kb3 Rh4 51. Qxg5 Rxh3+ 52. Kc4 Rh5 53. Qxg6 Re5 54. Qxg7+ Kc6 55. Qg2+ Kb6 56. Qg6+ Kb7 57. f4 Ra5 58. f5 Be5 59. f6 Bxf6 60. Qf7+ Kb8 61. Qxf6 |
| ECO A16 in 1985 play it! piket jeroen defeats black's piket marcel in 79 moves | 1. c4 Nf6 2. Nc3 e5 3. Nf3 Nc6 4. g3 d5 5. cxd5 Nxd5 6. d3 Be7 7. Bg2 Be6 8. O-O O-O 9. d4 exd4 10. Nxd4 Nxd4 11. Qxd4 Bf6 12. Qa4 Nxc3 13. bxc3 c6 14. Rb1 b5 15. Qa6 Bxc3 16. Ba3 b4 17. Bxb4 Bxb4 18. Rxb4 Qd2 19. Ra4 Rab8 20. Qxa7 Qxe2 21. Bxc6 Rb2 22. a3 Bc4 23. Ra1 h5 24. Qd4 Bd3 25. h4 Rd2 26. Qf4 Bg6 27. Ra8 Rdd8 28. Rxd8 Rxd8 29. a4 Qb2 30. Re1 Qc3 31. Rc1 Qa3 32. Bf3 Kh7 33. Bg2 Rd3 34. Be4 Rd6 35. Rc8 Rf6 36. Bxg6+ fxg6 37. Qe4 Qb2 38. Rc2 Qb6 39. Qa8 Qb3 40. Rc8 |
| ECO A22 in 2001 play it! piket jeroen defeats black's avrukh boris in 77 moves | 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. g3 Nd4 5. Bg2 Nxf3+ 6. Bxf3 Bb4 7. Qb3 Bc5 8. d3 h6 9. h4 Nh7 10. Ne4 Be7 11. Qb5 c5 12. Be3 a6 13. Qa4 Qc7 14. Nc3 Qd8 15. b4 Nf8 16. bxc5 Ne6 17. Qb4 O-O 18. Nd5 f5 19. Nxe7+ Qxe7 20. Bd5 Kh8 21. Bxe6 a5 22. Qb2 Qxe6 23. f4 e4 24. Bd4 Rf7 25. Kd2 Ra6 26. Be5 b6 27. cxb6 Rxb6 28. Qd4 Rc6 29. c5 exd3 30. exd3 Ba6 31. h5 Rc8 32. Rhb1 Qc6 33. Rb6 Qg2+ 34. Kc3 Rc6 35. Rab1 Qf3 36. Rxc6 dxc6 37. Qd6 Qxh5 38. Qxc6 Ra7 39. Rb6 |
| ECO A13 in 2000 play it! piket jeroen defeats black's jonkman harmen in 117 moves | 1. c4 e6 2. Nc3 d5 3. d4 Be7 4. Nf3 Nf6 5. Bf4 O-O 6. e3 b6 7. Rc1 c6 8. a3 Bb7 9. Bd3 Nbd7 10. cxd5 Nxd5 11. Nxd5 exd5 12. Qc2 h6 13. O-O c5 14. dxc5 Nxc5 15. Bh7+ Kh8 16. Bf5 Bf6 17. Nd4 Bc8 18. Rcd1 Bd7 19. Qb1 Re8 20. h3 a5 21. Bc2 Qc8 22. Rd2 Qb7 23. Rfd1 Ne4 24. Re2 Nc5 25. Bg3 b5 26. Red2 b4 27. axb4 axb4 28. Nb3 Na4 29. Bd3 Bc6 30. Bf1 Rad8 31. Nd4 Bd7 32. Be2 Nc5 33. Bf3 Ne4 34. Bxe4 dxe4 35. Qa2 Kg8 36. Kh2 Ra8 37. Qb1 Ba4 38. Rc1 Red8 39. Rc7 Qb6 40. Qxe4 Be8 41. Rc1 Ra7 42. Nc6 Bxc6 43. Rxc6 Qb7 44. Rxd8+ Bxd8 45. Qc4 Ra8 46. Be5 b3 47. Rg6 Ra5 48. Rxg7+ Kf8 49. Bc3 Qc7+ 50. Qxc7 Bxc7+ 51. f4 Ra6 52. Rh7 Rc6 53. Rh8+ Ke7 54. Bd4 Bb6 55. Bxb6 Rxb6 56. Kg3 Kd7 57. Kf3 Kc7 58. Ra8 Kd6 59. Rc8 |
| ECO B75 in 1993 play it! piket jeroen defeats black's sosonko gennadi in 57 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. Bc4 Bd7 10. h4 Rc8 11. Bb3 Ne5 12. O-O-O Nc4 13. Bxc4 Rxc4 14. g4 Qc7 15. h5 Rc8 16. hxg6 fxg6 17. Kb1 b5 18. Nd5 Nxd5 19. exd5 Be5 20. Qd3 Qb7 21. Rxh7 Kxh7 22. Rh1+ Kg7 23. Rh6 Rg8 24. Rxg6+ Kh8 25. Rh6+ Kg7 26. Ne6+ Bxe6 27. dxe6 Kf8 28. Qf5+ Bf6 29. Qh5 |
| ECO C10 in 1992 play it! piket jeroen defeats black's krudde fitzgeral in 85 moves | 1. e4 e6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Be7 5. Nf3 Nf6 6. Nxf6+ Bxf6 7. c3 Nd7 8. Be3 Qe7 9. Qc2 c5 10. dxc5 Nxc5 11. Bb5+ Bd7 12. Bxc5 Qxc5 13. Bxd7+ Kxd7 14. O-O Rad8 15. Rad1+ Ke7 16. Rxd8 Rxd8 17. Qxh7 g6 18. Qh6 Qc4 19. Qe3 b6 20. a3 Qb5 21. Qc1 Rd3 22. Re1 Qd5 23. h3 b5 24. Qf4 Rd1 25. Qe3 a6 26. Qe2 Rd3 27. Kf1 Qc4 28. Rc1 Qd5 29. Ke1 a5 30. Nd4 Bxd4 31. Qxd3 Bxf2+ 32. Ke2 Qxg2 33. Qf3 Qxf3+ 34. Kxf3 Bc5 35. b4 Bb6 36. bxa5 Bxa5 37. Rb1 Bxc3 38. Rxb5 Kd6 39. a4 f5 40. a5 Bd4 41. a6 e5 42. Rb7 e4+ 43. Kf4 |
| ECO D30 in 2007 play it! piket jeroen defeats black's kunze carlo in 81 moves | 1. d4 d5 2. c4 e6 3. Nf3 Nf6 4. Nc3 Nbd7 5. cxd5 exd5 6. Bg5 Be7 7. e3 O-O 8. Qc2 c6 9. Bd3 Re8 10. h3 Ne4 11. Bxe4 dxe4 12. Bxe7 Qxe7 13. Nd2 f5 14. Qb3+ Kh8 15. a4 Nf6 16. a5 Be6 17. Qa3 Qf7 18. Ne2 Qd7 19. b3 Nd5 20. Nc4 Qe7 21. O-O Nb4 22. Ne5 Bd5 23. Nf4 Kg8 24. Rfc1 Rad8 25. Nxd5 Rxd5 26. a6 Rxe5 27. dxe5 b6 28. Rd1 c5 29. Qa4 Nd3 30. Qc4+ Kh8 31. f4 Nb2 32. Qd5 Nxd1 33. Rxd1 h6 34. Qb7 Qe6 35. Qxa7 Qxb3 36. Qd7 Ra8 37. e6 Qxe3+ 38. Kh1 Qe2 39. e7 Qh5 40. Rd5 Re8 41. Qxe8+ |
| ECO D10 in 1999 play it! piket jeroen defeats black's schmitz joachim in 55 moves | 1. d4 d5 2. c4 c6 3. Nc3 Nf6 4. e3 g6 5. Nf3 Bg7 6. Be2 O-O 7. O-O Bg4 8. cxd5 cxd5 9. Qb3 b6 10. h3 Bxf3 11. Bxf3 e6 12. Bd2 Nc6 13. Be2 a6 14. Rac1 Na5 15. Qb4 Nd7 16. b3 Re8 17. Nb1 Nf6 18. Qa4 Nb7 19. Bxa6 Ra7 20. Rc6 Nd7 21. Rfc1 e5 22. Rc8 Qe7 23. Bb4 Qe6 24. Qc6 Nd8 25. Qxe6 fxe6 26. Bb5 Bf8 27. Bxf8 Rxf8 28. R8c7 |
| ECO D10 in 1996 play it! piket jeroen defeats black's shirov alexei es in 83 moves | 1. d4 d5 2. c4 c6 3. Nc3 Nf6 4. e3 e6 5. Nf3 Nbd7 6. Bd3 dxc4 7. Bxc4 b5 8. Bd3 a6 9. e4 c5 10. d5 Qc7 11. O-O c4 12. dxe6 fxe6 13. Bc2 Bc5 14. Qe2 Ne5 15. Nxe5 Qxe5 16. Kh1 O-O 17. f4 Qh5 18. Qxh5 Nxh5 19. e5 Bd4 20. Be4 Ra7 21. g4 Nxf4 22. Rxf4 Raf7 23. Ne2 Bxb2 24. Rxf7 Bxa1 25. Rxf8+ Kxf8 26. Ba3+ Kf7 27. Bd6 g5 28. Kg2 h6 29. Kf3 a5 30. Ke3 b4 31. Kd2 b3 32. a4 Bd7 33. Nc3 Bxc3+ 34. Kxc3 Bxa4 35. Bc7 b2 36. Kxb2 Bd1 37. Bxa5 Bxg4 38. Kc3 Be2 39. Kd4 Bf1 40. Bf3 Bd3 41. Bh5+ Bg6 42. Be2 |
| ECO D31 in 2001 play it! piket jeroen defeats black's cobb james e in 81 moves | 1. d4 d5 2. c4 e6 3. Nc3 Be7 4. Nf3 Nf6 5. Bg5 h6 6. Bh4 O-O 7. e3 b6 8. cxd5 Nxd5 9. Bxe7 Qxe7 10. Nxd5 exd5 11. Rc1 Be6 12. Qa4 c5 13. dxc5 bxc5 14. Qa3 Rc8 15. Nd4 Qb7 16. Nxe6 fxe6 17. Be2 Qb6 18. O-O Nd7 19. Rc2 Rc7 20. Rfc1 a5 21. e4 d4 22. Qg3 Nf6 23. Bc4 Kh8 24. Bd3 Rac8 25. e5 Nd7 26. h3 a4 27. Qg6 Nf8 28. Qe4 Kg8 29. Kh2 Qb4 30. a3 Qb6 31. f4 Rb8 32. Rc4 Qb3 33. R1c2 Qa2 34. b4 Qxa3 35. Rxc5 Rd7 36. b5 Qb3 37. f5 Kh8 38. Rc8 Rd8 39. Rxb8 Rxb8 40. f6 g6 41. Qh4 |
| ECO D02 in 2007 play it! piket jeroen defeats black's lautier joel fra in 77 moves | 1. d4 d5 2. Nf3 e6 3. g3 Nf6 4. Bg2 b5 5. O-O Bb7 6. Bg5 Nbd7 7. c3 c5 8. a4 b4 9. cxb4 cxb4 10. a5 Be7 11. Qa4 Rc8 12. Ne5 O-O 13. a6 Ba8 14. Bxf6 Nxf6 15. Nd2 Qb6 16. e3 Rc7 17. Rfc1 Rfc8 18. Rxc7 Rxc7 19. Bf1 Bc6 20. Nxc6 Qxc6 21. Qxc6 Rxc6 22. Bd3 Rc7 23. Nb3 Nd7 24. Kf1 Kf8 25. Ke2 h6 26. Ra5 Nb6 27. Rb5 Bd6 28. Na5 Na4 29. Rb8+ Ke7 30. Rb7 Nxb2 31. Nc6+ Kf6 32. Rxc7 Bxc7 33. Nxa7 Na4 34. Nc8 Nb6 35. a7 Na8 36. Bb5 b3 37. Kd3 Ba5 38. Bc6 Nc7 39. Nd6 |
| ECO D12 in 2002 play it! piket jeroen defeats black's van wely loek in 77 moves | 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. e3 Bf5 5. Nc3 e6 6. Nh4 Be4 7. f3 Bg6 8. Qb3 Qc7 9. Bd2 Nbd7 10. g3 Be7 11. cxd5 exd5 12. O-O-O O-O 13. Nxg6 hxg6 14. Kb1 a5 15. Qc2 c5 16. g4 cxd4 17. exd4 Nb6 18. h4 Rac8 19. h5 g5 20. Bxg5 Nxg4 21. Bc1 Nf6 22. Bd3 Kh8 23. Rdg1 Nc4 24. Qg2 Rg8 25. Bg6 Bf8 26. h6 gxh6 27. Bxh6 Rxg6 28. Bf4+ Nh7 29. Bxc7 Rxg2 30. Rxg2 Rxc7 31. Rhg1 Nf6 32. Nxd5 Rc6 33. Rh1+ Nh7 34. Rgh2 Kg8 35. Rxh7 Nd2+ 36. Ka1 Nxf3 37. a3 Ng5 38. R7h5 Rg6 39. Nf4 |
| ECO D31 in 1998 play it! piket jeroen defeats black's van der werf mar in 45 moves | 1. d4 d5 2. c4 e6 3. Nc3 c6 4. e4 dxe4 5. Nxe4 Bb4+ 6. Bd2 Qxd4 7. Bxb4 Qxe4+ 8. Be2 c5 9. Bxc5 Nd7 10. Bd6 Qxg2 11. Bf3 Qg5 12. h4 Qa5+ 13. b4 Qf5 14. Qb3 Ngf6 15. O-O-O Ne5 16. Qc3 Nxf3 17. Nxf3 Bd7 18. Nd4 Qxf2 19. Rh2 Ne4 20. Qd3 Qxh2 21. Bxh2 Nf2 22. Qg3 Nxd1 23. Qxg7 |
| ECO D15 in 2001 play it! piket jeroen defeats black's prie eric in 61 moves | 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 a6 5. c5 Nbd7 6. Bf4 Nh5 7. e3 Nxf4 8. exf4 g6 9. Bd3 Bh6 10. g3 Nf8 11. h3 Ne6 12. Na4 Qa5+ 13. Kf1 Rb8 14. a3 Qc7 15. Nb6 O-O 16. Qd2 f6 17. Re1 Nxf4 18. gxf4 e5 19. dxe5 fxe5 20. Nxe5 Rxf4 21. Qe2 Bf8 22. b4 a5 23. Qe3 Bh6 24. Qg3 Rf8 25. Nxc8 Rbxc8 26. Rg1 Bf4 27. Qg4 Bxe5 28. Qe6+ Rf7 29. Rxe5 Kh8 30. Bxg6 Rg7 31. Qxc8+ |
| ECO D10 in 1996 play it! piket jeroen defeats black's dreev alexey in 81 moves | 1. d4 d5 2. c4 c6 3. Nc3 Nf6 4. Nf3 e6 5. Bg5 h6 6. Bxf6 Qxf6 7. e3 Nd7 8. a3 g6 9. b4 Bg7 10. cxd5 exd5 11. Bd3 O-O 12. O-O Nb6 13. Qb3 Qd6 14. Rfc1 Be6 15. Nd2 Rfb8 16. Rab1 a5 17. bxa5 Nd7 18. a4 Rxa5 19. Qc2 Ra7 20. Ne2 Nf8 21. h3 Bc8 22. Nc3 Ne6 23. Kh1 Bd7 24. Rb6 Qc7 25. Rcb1 Ra5 26. f4 Nc5 27. dxc5 Rxc5 28. R6b3 b5 29. axb5 cxb5 30. Nxd5 Rxc2 31. Nxc7 Rxd2 32. Bxb5 Bf5 33. Bc6 Rxb3 34. Rxb3 Rc2 35. Nd5 Kh7 36. Nb4 Rc1+ 37. Kh2 Bf8 38. Bd5 Rc5 39. Bxf7 Kg7 40. Be8 Rc2 41. Nxc2 |
| ECO D02 in 1988 play it! piket jeroen defeats black's karolyi t jr in 27 moves | 1. d4 d5 2. Nf3 Nf6 3. c4 e6 4. Nc3 dxc4 5. e4 Bb4 6. Bg5 c5 7. e5 cxd4 8. Nxd4 Qa5 9. exf6 Qxg5 10. Qa4+ Nc6 11. Nxc6 Bxc3+ 12. bxc3 Bd7 13. Qb4 Qxf6 14. Nd4 |