| ECO D24 in 1995 play it! piket jeroen defeats black's riemersma liafbe in 81 moves | 1. d4 d5 2. c4 dxc4 3. Nf3 Nf6 4. Nc3 c5 5. d5 e6 6. e4 exd5 7. e5 Nfd7 8. Bg5 Be7 9. Bxe7 Qxe7 10. Nxd5 Qd8 11. Qc2 Nxe5 12. Qe4 Be6 13. Qxe5 Qxd5 14. Qxg7 Rf8 15. Rd1 Qe4+ 16. Be2 Nd7 17. Ng5 Qg6 18. Nxe6 Qxe6 19. Qg5 f6 20. Qh5+ Rf7 21. O-O O-O-O 22. Rd6 Qxd6 23. Qxf7 Ne5 24. Qxh7 Qd2 25. Qf5+ Kc7 26. Bxc4 Rd6 27. Be6 Qe2 28. Qh7+ Nd7 29. Bxd7 Rxd7 30. Qb1 Rd2 31. h4 Rxb2 32. Qh7+ Kb6 33. h5 c4 34. Qf7 Ka5 35. h6 c3 36. h7 c2 37. Qc7+ Ka6 38. h8=Q Rb1 39. Qxf6+ b6 40. Qc8+ Ka5 41. Qff5+ |
| ECO D15 in 1985 play it! piket jeroen defeats black's schlosser michae by checkmate in 77 moves | 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 dxc4 5. e4 b5 6. e5 Nd5 7. a4 e6 8. axb5 Nxc3 9. bxc3 cxb5 10. Ng5 Bb7 11. Qh5 g6 12. Qg4 Nd7 13. Be2 Be7 14. h4 h5 15. Qg3 Bd5 16. Bd1 a5 17. Bc2 Rg8 18. f3 Nb6 19. Nh7 b4 20. Bg5 b3 21. Bxe7 Qxe7 22. Nf6+ Kf8 23. Qg5 Rh8 24. Bb1 a4 25. g4 hxg4 26. h5 Nd7 27. Kd2 Nxf6 28. exf6 Qc7 29. Be4 Qg3 30. Rae1 Bxe4 31. Qc5+ Kg8 32. hxg6 Rh2+ 33. Rxh2 Qxh2+ 34. Ke3 Bxg6 35. Qg5 Qg3 36. Rf1 Qh2 37. Rf2 gxf3 38. Rxh2 Kf8 39. Rh8# |
| ECO D15 in 2001 play it! piket jeroen defeats black's fontaine robert in 63 moves | 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 a6 5. c5 Nbd7 6. Bf4 Nh5 7. e3 Nxf4 8. exf4 b6 9. b4 bxc5 10. bxc5 Qa5 11. Qd2 g6 12. Bd3 Bh6 13. O-O Qc7 14. g3 O-O 15. Rfe1 e6 16. Rab1 f6 17. Qc2 Bxf4 18. gxf4 Qxf4 19. Re3 e5 20. Kh1 e4 21. Nxe4 dxe4 22. Bxe4 Rb8 23. Bxc6 Kh8 24. Rbe1 f5 25. Bxd7 Bxd7 26. d5 Qh6 27. Re7 Be8 28. Qc3+ Kg8 29. Ng5 Bf7 30. Nxf7 Rxf7 31. Rxf7 Kxf7 32. d6 |
| ECO D17 in 2002 play it! piket jeroen defeats black's gelfand boris in 95 moves | 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 dxc4 5. a4 Bf5 6. Ne5 Nbd7 7. Nxc4 Qc7 8. g3 e5 9. dxe5 Nxe5 10. Bf4 Nfd7 11. Bg2 g5 12. Nxe5 gxf4 13. Nxd7 Bxd7 14. Qd4 Rg8 15. Qe4+ Be7 16. a5 a6 17. Ra4 fxg3 18. hxg3 Rg4 19. f4 f5 20. Qe3 Rg7 21. Kf2 Qd6 22. Rd1 Qg6 23. Rd3 Be6 24. Qb6 Rc8 25. Kf1 Bd8 26. Qc5 Be7 27. Qa7 Bh4 28. Rb4 Bxg3 29. Rxb7 Rxb7 30. Qxb7 Bxf4 31. Bxc6+ Kf8 32. Bd7 Rb8 33. Qxa6 Bh2 34. Qa7 Bc4 35. Qc5+ Kg7 36. Bxf5 Qg5 37. Rd7+ Bf7 38. Qd4+ Kf8 39. Qc5+ Kg7 40. Ne4 Qf4+ 41. Qf2 Kf8 42. Qxf4 Bxf4 43. a6 Be3 44. Kg2 Rxb2 45. Kf3 Rb3 46. Rd3 Rxd3 47. exd3 Bg1 48. Nf2 |
| ECO D19 in 2000 play it! piket jeroen defeats black's morozevich alexa in 77 moves | 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 dxc4 5. a4 Bf5 6. e3 e6 7. Bxc4 Bb4 8. O-O O-O 9. Qe2 Nbd7 10. e4 Bg6 11. e5 Nd5 12. Ne4 c5 13. Bg5 Qa5 14. Bb5 N5b6 15. Rfd1 a6 16. Bxd7 Nxd7 17. Nd6 cxd4 18. Rxd4 Bc5 19. Nxb7 Qc7 20. Rxd7 Qxd7 21. Nxc5 Qd5 22. Be3 Rfc8 23. Rd1 Qa2 24. h3 h6 25. Kh2 Rab8 26. Rd2 Rc6 27. b4 Qb1 28. Rb2 Qa1 29. b5 axb5 30. axb5 Rcc8 31. b6 Rd8 32. Nd4 Bh5 33. Qc2 Rbc8 34. b7 Rxc5 35. Qxc5 Qxb2 36. Qc8 Rf8 37. Nc6 Rxc8 38. bxc8=Q+ Kh7 39. Qb8 |
| ECO D02 in 1987 play it! piket jeroen defeats black's mohammed a al ki in 86 moves | 1. d4 d5 2. Nf3 Nf6 3. c4 e6 4. Nc3 Be7 5. Bg5 c6 6. e3 O-O 7. Bd3 Nbd7 8. Rc1 Re8 9. O-O Nf8 10. Qc2 Nh5 11. Bxe7 Qxe7 12. Rfe1 Nf6 13. e4 dxe4 14. Nxe4 Nxe4 15. Bxe4 Qd8 16. Rcd1 Qc7 17. c5 Bd7 18. Ne5 Red8 19. Nc4 g6 20. a4 b6 21. b4 Rab8 22. Qc3 Be8 23. Bf3 Nd7 24. h4 h5 25. Nd6 Nf6 26. Qe3 Nd5 27. Bxd5 cxd5 28. b5 a6 29. bxa6 bxc5 30. dxc5 Qa7 31. Qg5 Qxa6 32. Ne4 dxe4 33. Rxd8 Rxd8 34. Qxd8 Qxa4 35. Qb8 Kh7 36. Qe5 e3 37. Rxe3 Qxh4 38. Rb3 Qe7 39. Rb8 Qd7 40. Ra8 Qd1+ 41. Kh2 Qd7 42. Qd6 Qb5 43. Rc8 Qa4 |
| ECO D61 in 1984 play it! piket jeroen defeats black's condie mark l in 65 moves | 1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bg5 Be7 5. e3 O-O 6. Nf3 Nbd7 7. Qc2 c5 8. O-O-O Qa5 9. Kb1 h6 10. h4 cxd4 11. exd4 Bb4 12. Bd2 dxc4 13. Bxc4 Nb6 14. Bb3 Bd7 15. Ne5 Bc6 16. f3 Bd5 17. g4 Bxb3 18. Qxb3 Nfd7 19. Rhe1 Rad8 20. g5 hxg5 21. hxg5 Bxc3 22. bxc3 Nxe5 23. Rxe5 Qa6 24. Rxe6 Qd3+ 25. Kc1 Nc4 26. Re4 Qxf3 27. Rh4 Nxd2 28. Rxd2 Rfe8 29. g6 Re1+ 30. Kb2 Rd7 31. Qc4 Qc6 32. gxf7+ Rxf7 33. Rdh2 |
| ECO D10 in 2001 play it! piket jeroen defeats black's pelletier yannic in 51 moves | 1. d4 d5 2. c4 c6 3. Nc3 Nf6 4. e3 e6 5. Nf3 Nbd7 6. Bd3 dxc4 7. Bxc4 b5 8. Bd3 Bb7 9. e4 b4 10. Na4 c5 11. e5 Nd5 12. O-O cxd4 13. Nxd4 Nxe5 14. Bb5+ Nd7 15. Qh5 g6 16. Qe2 a6 17. Nxe6 fxe6 18. Qxe6+ Ne7 19. Nc5 axb5 20. Nxb7 Qb6 21. Nd6+ Kd8 22. Be3 Qa6 23. Rad1 Rg8 24. Rfe1 g5 25. Qf7 Rg6 26. Ne4 |
| ECO D15 in 2000 play it! piket jeroen defeats black's gelfand boris in 81 moves | 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 e6 5. Bg5 h6 6. Bh4 dxc4 7. e4 g5 8. Bg3 b5 9. Be2 Bb7 10. O-O Nbd7 11. e5 Nh5 12. Nd2 Nxg3 13. hxg3 Qb6 14. Bh5 Qxd4 15. Bxf7+ Kxf7 16. Qh5+ Kg7 17. Rad1 Nxe5 18. Nf3 Qg4 19. Rd7+ Kg8 20. Ne4 Bg7 21. Qxg4 Nxg4 22. Rxb7 Bxb2 23. Rc7 Nf6 24. Nc5 Nd5 25. Rxc6 Nb4 26. Rxe6 c3 27. a3 Bxa3 28. Ne5 c2 29. Ncd7 Nd5 30. Rc6 c1=Q 31. Rfxc1 Bxc1 32. Rxc1 Kg7 33. Rc6 Ne7 34. Re6 Rhe8 35. Nf6 b4 36. Nh5+ Kh7 37. Nf6+ Kg7 38. Nh5+ Kf8 39. Rf6+ Kg8 40. Rf7 Nd5 41. Rg7+ |
| ECO D02 in 2001 play it! piket jeroen defeats black's michiels bart in 55 moves | 1. d4 d5 2. Nf3 Nf6 3. c4 dxc4 4. e3 e6 5. Bxc4 c5 6. O-O a6 7. a4 Nc6 8. Qe2 cxd4 9. Rd1 Be7 10. exd4 O-O 11. Nc3 Nd5 12. Bd3 Ndb4 13. Bb1 Na5 14. Bf4 Bd7 15. d5 g6 16. dxe6 fxe6 17. Bh6 Qc7 18. Qe5 Qxe5 19. Nxe5 Be8 20. Bxf8 Kxf8 21. Be4 Nb3 22. Bxb7 Rb8 23. Ra3 Nc5 24. Be4 Nxe4 25. Nxe4 Kg7 26. Rf3 Nc6 27. Nc4 Rb4 28. Ncd6 |
| ECO D02 in 1990 play it! piket jeroen defeats black's bronstein david in 85 moves | 1. d4 d5 2. Nf3 Nf6 3. c4 dxc4 4. Nc3 c6 5. a4 Na6 6. e3 Bg4 7. Bxc4 e6 8. h3 Bh5 9. O-O Nb4 10. Qe2 Be7 11. Rd1 O-O 12. g4 Bg6 13. Ne5 Nd7 14. Nxg6 hxg6 15. e4 Qc7 16. Be3 e5 17. d5 Nf6 18. Rac1 Rad8 19. Bb3 Qa5 20. dxc6 bxc6 21. Qc4 a6 22. Rxd8 Qxd8 23. Rd1 Qb8 24. a5 Qc8 25. f3 Nh7 26. Na4 c5 27. Nb6 Qe8 28. Bxc5 Nc6 29. Bxe7 Qxe7 30. Qxc6 Qh4 31. Kg2 Ng5 32. Rh1 Rd8 33. Qc3 Qh6 34. h4 Nxe4 35. fxe4 Rd2+ 36. Kh3 Qf4 37. Nd5 Qxe4 38. Qxd2 Qxh1+ 39. Kg3 Qg1+ 40. Qg2 Qe1+ 41. Qf2 Qxa5 42. Ne7+ Kh7 43. Bxf7 |
| ECO D10 in 1985 play it! piket jeroen defeats black's voormans jan in 71 moves | 1. d4 d5 2. c4 c6 3. Nc3 Nf6 4. Nf3 dxc4 5. e4 b5 6. e5 Nd5 7. a4 e6 8. axb5 Nxc3 9. bxc3 cxb5 10. Ng5 Bb7 11. Qh5 g6 12. Qg4 h6 13. Ne4 Nd7 14. Be2 Bd5 15. Ra6 Qc7 16. Bf3 Qb7 17. Rd6 Be7 18. O-O a5 19. Re1 Kf8 20. h4 Ra6 21. Qf4 Kg7 22. Rxa6 Qxa6 23. Nd6 Bxd6 24. Bxd5 Be7 25. Be4 Nb6 26. Re3 Qc8 27. Rf3 Qf8 28. h5 Bg5 29. Qg3 Qe7 30. hxg6 fxg6 31. Rf6 Bxf6 32. Qxg6+ Kf8 33. exf6 Qf7 34. Bxh6+ Ke8 35. Qg5 Rg8 36. Bg7 |
| ECO A40 in 1999 play it! piket jeroen defeats black's bunzmann dimitri in 77 moves | 1. d4 e6 2. c4 Bb4+ 3. Bd2 a5 4. Nf3 d6 5. g3 Nc6 6. Bg2 e5 7. O-O Nxd4 8. Nxd4 exd4 9. Bxb4 axb4 10. Qxd4 Qf6 11. Qe3+ Qe7 12. Qb3 c5 13. Nd2 Nf6 14. a3 O-O 15. e3 bxa3 16. Rxa3 Rb8 17. Ra7 Qd8 18. Rfa1 b6 19. Nb1 Be6 20. Nc3 b5 21. Nxb5 d5 22. Qc3 dxc4 23. Nc7 Bg4 24. Qxc4 Rxb2 25. Nd5 Be6 26. Qc3 Qb8 27. Nxf6+ gxf6 28. Qxf6 Rb1+ 29. Bf1 Rc8 30. h4 Qb5 31. Rxb1 Qxb1 32. h5 Qe4 33. Qg5+ Kh8 34. Bg2 Qc2 35. Qf6+ Kg8 36. Kh2 Qd1 37. Qg5+ Kf8 38. Qh6+ Kg8 39. Be4 |
| ECO A40 in 1992 play it! piket jeroen defeats black's de zeeuw maarten in 33 moves | 1. d4 e6 2. Nf3 Nf6 3. Bg5 c5 4. e3 Qb6 5. Nbd2 Qxb2 6. Bd3 d5 7. Rb1 Qc3 8. O-O c4 9. Bxc4 dxc4 10. Bxf6 gxf6 11. Ne4 Qa5 12. Nxf6+ Ke7 13. Ne5 Nc6 14. Qh5 Nxe5 15. dxe5 h6 16. Rfd1 Bg7 17. Rxb7+ |
| ECO A40 in 1993 play it! piket jeroen defeats black's psakhis lev in 73 moves | 1. d4 e6 2. c4 Bb4+ 3. Bd2 a5 4. Nf3 d6 5. g3 Nc6 6. Bg2 e5 7. Bxb4 axb4 8. d5 Nb8 9. O-O Nf6 10. Nbd2 O-O 11. Ne1 c5 12. Nd3 b5 13. cxb5 Bd7 14. a4 bxa3 15. Qb3 Qb6 16. Rxa3 Rxa3 17. bxa3 Qxb5 18. Rb1 Qa5 19. Nc4 Qa6 20. Qc3 Bb5 21. Ncxe5 h5 22. Qb2 Ba4 23. Nf3 Nxd5 24. Nh4 Nf6 25. Nf5 c4 26. Nb4 Qa5 27. Bd5 Nbd7 28. Qc1 Nh7 29. Nxd6 Ndf6 30. Qxc4 Qa7 31. Bxf7+ Kh8 32. Nd3 Ng5 33. Rb7 Qa5 34. h4 Ngh7 35. Nf4 Qe1+ 36. Kg2 Bc2 37. Qxc2 |
| ECO A40 in 1993 play it! piket jeroen defeats black's short nigel d in 103 moves | 1. d4 e6 2. Nf3 f5 3. Bf4 Nf6 4. e3 g6 5. c4 d6 6. Nc3 Bg7 7. h3 O-O 8. Be2 Qe7 9. Qb3 b6 10. O-O Bb7 11. Rfd1 Nc6 12. Rac1 Kh8 13. Qa3 Ne4 14. Bh2 Nxc3 15. Rxc3 a5 16. Rc2 g5 17. Rcd2 f4 18. c5 Nb4 19. cxd6 cxd6 20. exf4 gxf4 21. Ne1 Rac8 22. Bf3 Bh6 23. Qb3 Ba6 24. a3 Bc4 25. Qa4 Nd5 26. Rc2 b5 27. Qxa5 Ra8 28. Qd2 Bb3 29. Qe2 Qd7 30. Kh1 Rae8 31. Bg1 Rg8 32. Be4 Bxc2 33. Bxc2 Ref8 34. Qf3 Ne7 35. Qh5 Rf6 36. Nf3 Nc8 37. Bh2 Nb6 38. Bd3 Nc4 39. Re1 Nxb2 40. Qxb5 Qxb5 41. Bxb5 Rc8 42. a4 d5 43. Ne5 Nc4 44. Ng4 Rg6 45. Nxh6 Rxh6 46. Bxf4 Rg6 47. g3 Na5 48. Bd7 Rc2 49. Bxe6 Nc4 50. Bxd5 Ra6 51. Re7 Rxa4 52. Bh6 |
| ECO A40 in 1991 play it! piket jeroen defeats black's bischoff klaus in 121 moves | 1. d4 e6 2. c4 Nf6 3. Nf3 b6 4. g3 Ba6 5. Nbd2 Bb4 6. Qc2 Bb7 7. Bg2 Be4 8. Qb3 Bxd2+ 9. Bxd2 d6 10. O-O Nbd7 11. Rfd1 O-O 12. Rac1 Qe7 13. Qa3 a5 14. Bh3 h6 15. Ne5 Rae8 16. Nxd7 Nxd7 17. Be3 Bc6 18. c5 bxc5 19. dxc5 d5 20. Qxa5 Nf6 21. Qa6 Qd7 22. Qd3 Ra8 23. a3 Qe7 24. b4 Ba4 25. Re1 c6 26. Bd4 e5 27. Bb2 Bb5 28. Qe3 Rfe8 29. Bf1 d4 30. Qd2 Nd5 31. e3 Bxf1 32. Rxf1 Qg5 33. Rce1 Rad8 34. h4 dxe3 35. Qxd5 Qg4 36. Qxc6 e2 37. Qb5 exf1=Q+ 38. Qxf1 Qf3 39. Qe2 Qd5 40. Bc1 Re6 41. Qc2 Qa8 42. Be3 Rb8 43. Qb3 g5 44. h5 Qf3 45. b5 Qxh5 46. Qc4 Qf3 47. a4 Kg7 48. c6 Ree8 49. c7 Rbc8 50. b6 f5 51. a5 f4 52. Qe2 Qd5 53. Bd2 f3 54. Qe3 e4 55. Bc3+ Kg6 56. Qd4 Qf5 57. Qg7+ Kh5 58. b7 Rxc7 59. Qxc7 e3 60. g4+ Qxg4+ 61. Qg3 |
| ECO A40 in 2000 play it! piket jeroen defeats black's short nigel d in 79 moves | 1. d4 e6 2. c4 b6 3. a3 f5 4. d5 Nf6 5. g3 Bb7 6. Bg2 g6 7. Nc3 Bg7 8. Nh3 O-O 9. O-O a5 10. Rb1 Na6 11. b4 axb4 12. axb4 c5 13. bxc5 Nxc5 14. Be3 Ra5 15. Nf4 Ba6 16. dxe6 Bxc4 17. exd7 Nfxd7 18. Bd5+ Bxd5 19. Ncxd5 Be5 20. Nxb6 Nxb6 21. Qxd8 Rxd8 22. Bxc5 Na4 23. Bb4 Rb5 24. Nd3 Bc3 25. Be7 Rdb8 26. Rxb5 Rxb5 27. Rc1 Kf7 28. Bg5 Ke6 29. Kf1 Rb3 30. h4 Ra3 31. Rc2 Kd5 32. Bd2 Kc4 33. Bxc3 Nxc3 34. Kg2 Kd4 35. Nf4 Ke5 36. Rb2 Ra7 37. Rb6 Re7 38. Rc6 Ne4 39. f3 Nd6 40. Rc5+ |
| ECO A40 in 1997 play it! piket jeroen defeats black's arnold lothar in 67 moves | 1. d4 e6 2. c4 Nf6 3. Nc3 c5 4. d5 d6 5. e4 g6 6. Bd3 Bg7 7. Nf3 O-O 8. h3 exd5 9. cxd5 b5 10. Nxb5 Re8 11. O-O Nxe4 12. Re1 a6 13. Na3 Nf6 14. Rxe8+ Nxe8 15. Bg5 Qc7 16. Qa4 Nd7 17. Re1 Nef6 18. Qc6 Qb8 19. Nc4 Bb7 20. Qxd6 Qxd6 21. Nxd6 Bxd5 22. Nd2 h6 23. Be3 Nh7 24. Bc4 Bxc4 25. N2xc4 Nhf8 26. Rd1 h5 27. b3 Bf6 28. Rd5 Be7 29. Bxc5 Nxc5 30. Rxc5 Ne6 31. Rc6 Kg7 32. Rb6 Nd8 33. Kf1 Bf6 34. Ne8+ |
| ECO A40 in 1999 play it! piket jeroen defeats black's timman jan hein in 61 moves | 1. d4 e6 2. c4 b6 3. e4 Bb7 4. Nc3 Bb4 5. f3 f5 6. exf5 exf5 7. Nh3 Nc6 8. Bg5 Nf6 9. Qe2+ Kf7 10. O-O-O Bxc3 11. bxc3 h6 12. Bh4 Qe7 13. Qb2 g5 14. Bf2 Na5 15. Re1 Qf8 16. Re5 f4 17. Rf5 Rg8 18. Bd3 Ba6 19. Nxf4 gxf4 20. Bh4 Rg5 21. Bxg5 hxg5 22. h4 Qh6 23. Re1 gxh4 24. Qe2 Rf8 25. Qe7+ Kg8 26. Rxf6 Rxf6 27. Qxd7 Qg7 28. Re8+ Rf8 29. Re7 Rf7 30. Qe6 Qf6 31. Re8+ |