| ECO A05 in 1987 play it! piket jeroen defeats white's akopian vladimir in 138 moves | 1. Nf3 Nf6 2. g3 d5 3. Bg2 c6 4. O-O Bf5 5. d3 h6 6. Nbd2 e6 7. b3 Nbd7 8. Bb2 Be7 9. Re1 O-O 10. e4 Bh7 11. Qe2 a5 12. a3 Qb8 13. Nd4 Qa7 14. exd5 cxd5 15. N2f3 Qa6 16. Bh3 Rfe8 17. c4 Bf8 18. Nb5 Rac8 19. Ne5 a4 20. Nxd7 Nxd7 21. b4 Nb6 22. Be5 Bxd3 23. Qxd3 dxc4 24. Qf3 Qxb5 25. Qxb7 Re7 26. Qf3 Rd7 27. Bf1 Rcd8 28. Rac1 Qd5 29. Qe3 Qb7 30. Bxc4 Nxc4 31. Rxc4 Rd3 32. Qc1 Qf3 33. Rf4 Qh5 34. Rh4 Qg6 35. Rf4 f6 36. Bb2 e5 37. Rc4 Qf5 38. Rc2 Qf3 39. Rce2 h5 40. Re3 Rxe3 41. Qxe3 Qxe3 42. Rxe3 Rd2 43. Bc3 Ra2 44. Be1 Kf7 45. f3 Ke6 46. Bf2 Bd6 47. Rc3 g5 48. h3 f5 49. Be3 e4 50. fxe4 fxe4 51. Bxg5 Be5 52. Rc6+ Kd5 53. Rc5+ Kd4 54. Be3+ Kxe3 55. Rxe5 Rxa3 56. Rxh5 Kf3 57. Rf5+ Kxg3 58. Rg5+ Kf4 59. Rg4+ Kf3 60. Rg8 Ra1+ 61. Kh2 Ra2+ 62. Kg1 a3 63. Rf8+ Kg3 64. Rg8+ Kxh3 65. Ra8 Rg2+ 66. Kh1 a2 67. Ra3+ e3 68. Rxe3+ Rg3 69. Re1 Rb3 |
| ECO A05 in 2000 play it! piket jeroen defeats white's movsesian sergei in 67 moves | 1. Nf3 Nf6 2. g3 c5 3. Bg2 Nc6 4. O-O d5 5. d3 Bg4 6. Nbd2 e6 7. e4 Be7 8. h3 Bh5 9. Qe1 O-O 10. c3 Qc7 11. Qe2 Rfd8 12. Re1 b5 13. a4 b4 14. Nf1 bxc3 15. bxc3 Bxf3 16. Bxf3 d4 17. c4 e5 18. Bd2 Rab8 19. Reb1 Rxb1 20. Rxb1 Rb8 21. Qe1 Nb4 22. Bxb4 cxb4 23. Nd2 Nd7 24. Nb3 Nb6 25. Ra1 Qc6 26. Qd1 Bd8 27. Nd2 Nd7 28. Bg4 Nc5 29. Qb1 b3 30. Bd1 b2 31. Ra2 g6 32. Rxb2 Rxb2 33. Qxb2 Nxe4 34. dxe4 |
| ECO A09 in 1999 play it! piket jeroen defeats white's janssen ruud in 76 moves | 1. Nf3 d5 2. c4 e6 3. d4 Nf6 4. g3 dxc4 5. Bg2 a6 6. O-O Nc6 7. e3 Bd7 8. Qe2 b5 9. Ne5 Nxe5 10. Bxa8 Qxa8 11. dxe5 Ne4 12. a4 Qb7 13. axb5 axb5 14. f3 Nc5 15. e4 Nb3 16. Ra2 Nxc1 17. Rxc1 Bc5+ 18. Kg2 Bd4 19. Qd2 c5 20. Nc3 O-O 21. Rca1 Bc6 22. Ra7 Qb8 23. R7a6 Qc7 24. R1a5 Rb8 25. Qg5 h6 26. Qh5 b4 27. Ra7 Rb7 28. Ra8+ Kh7 29. Nd5 Qxe5 30. Qxe5 Bxe5 31. Ne3 c3 32. b3 Bd4 33. Nc2 e5 34. Kf1 Bb5+ 35. Ke1 Bd3 36. Kd1 c4 37. Ne1 c2+ 38. Nxc2 cxb3 |
| ECO A05 in 2001 play it! piket jeroen defeats white's mellegers joost in 80 moves | 1. Nf3 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. d4 O-O 6. Be2 e5 7. O-O Na6 8. Be3 Ng4 9. Bg5 Qe8 10. dxe5 dxe5 11. h3 f6 12. Bd2 Nh6 13. c5 c6 14. Bxa6 bxa6 15. Bxh6 Bxh6 16. Qa4 Rb8 17. b3 Rf7 18. Rfd1 Bf8 19. Qa5 Kg7 20. Na4 Rb5 21. Qc3 Be6 22. Rd3 Rd7 23. Rad1 Rxd3 24. Rxd3 Qb8 25. Nd2 a5 26. Nc4 Rb4 27. Nxa5 Qb5 28. Nxc6 Rxa4 29. Nd8 Ra6 30. c6 Bc8 31. Rd5 Qe2 32. Qd2 Qxd2 33. Rxd2 Be7 34. c7 Bd6 35. Rc2 Rb6 36. f3 Kf8 37. Kf2 Ke8 38. Ke3 Kd7 39. Nf7 Bxc7 40. g4 Rc6 |
| ECO A04 in 1990 play it! piket jeroen defeats white's hutchings stuart in 80 moves | 1. Nf3 g6 2. d4 Bg7 3. c4 Nf6 4. Nc3 O-O 5. e4 d6 6. Be2 e5 7. O-O Nc6 8. d5 Ne7 9. Ne1 Nd7 10. Nd3 f5 11. Bd2 Nf6 12. f3 h5 13. c5 f4 14. cxd6 cxd6 15. Rc1 g5 16. Nf2 Ng6 17. Nb5 Ne8 18. Qc2 g4 19. fxg4 hxg4 20. Qb3 a6 21. Na3 Nf6 22. Nc4 b5 23. Na5 Bh6 24. Nc6 Qb6 25. Rc2 Kh7 26. Ba5 Qe3 27. Rc3 Qxe2 28. Rc2 Qe3 29. Rc3 g3 30. hxg3 Qe2 31. g4 Nxg4 32. Rc2 Qe3 33. Rc3 Nxf2 34. Rxe3 fxe3 35. Be1 Nf4 36. Bxf2 Ne2+ 37. Kh2 Rxf2 38. Rxf2 exf2 39. Qf3 Bf4+ 40. g3 Nxg3 |
| ECO A04 in 1984 play it! piket jeroen defeats white's krnic zdenko in 66 moves | 1. Nf3 g6 2. e4 Bg7 3. d4 d6 4. Nc3 Nf6 5. Be2 O-O 6. O-O c6 7. a4 Nbd7 8. a5 e5 9. dxe5 dxe5 10. Be3 Qe7 11. Nd2 Nc5 12. f3 Rd8 13. Qe1 Ne6 14. Qf2 Nd4 15. Bd3 Nh5 16. Ne2 Be6 17. Rfd1 Qc7 18. g3 c5 19. b3 Rd7 20. Re1 Rad8 21. Nc1 Nf4 22. gxf4 exf4 23. Nf1 fxe3 24. Nxe3 Nxf3+ 25. Qxf3 Bxa1 26. Ne2 Be5 27. Bc4 Qxa5 28. Rf1 Bxc4 29. bxc4 Qa6 30. Ng4 Qe6 31. Nf4 Bxf4 32. Qxf4 Rd1 33. Nf6+ Kg7 |
| ECO A05 in 1999 play it! piket jeroen defeats white's van der sterren in 56 moves | 1. Nf3 Nf6 2. c4 c6 3. Nc3 d5 4. cxd5 cxd5 5. d4 Nc6 6. Bf4 a6 7. Rc1 Bf5 8. e3 Rc8 9. Ne5 e6 10. Qb3 Nxe5 11. dxe5 Ne4 12. Be2 g5 13. Bg3 b5 14. Nxe4 Rxc1+ 15. Kd2 Qa5+ 16. Kxc1 Bxe4 17. f3 Bg6 18. Be1 Qb6 19. Bd2 Bg7 20. h4 O-O 21. Kd1 gxh4 22. f4 d4 23. Rxh4 Rc8 24. e4 d3 25. Bxd3 Qg1+ 26. Ke2 Qxg2+ 27. Kd1 Qg3 28. Be1 Rc1+ |
| ECO A04 in 1994 play it! piket jeroen defeats white's polugaevsky lev in 72 moves | 1. Nf3 g6 2. d4 Bg7 3. c4 d6 4. g3 Nf6 5. Bg2 O-O 6. O-O Nbd7 7. Nc3 e5 8. e4 c6 9. b3 exd4 10. Nxd4 Re8 11. h3 Nc5 12. Re1 a5 13. Bf4 h6 14. Qc2 Nfd7 15. Be3 Kh7 16. Rad1 Qb6 17. Nde2 Qb4 18. Rb1 a4 19. Bd2 axb3 20. axb3 Qb6 21. Be3 Qb4 22. Red1 Ra3 23. Nb5 cxb5 24. Bd2 Qxb3 25. Rxb3 Rxb3 26. Bc3 Bxc3 27. Nxc3 bxc4 28. Rxd6 b5 29. f4 b4 30. Nd1 c3 31. e5 Nxe5 32. g4 Nc4 33. Rf6 Re7 34. Bd5 Na3 35. Qf2 c2 36. Qd2 Rd3 |
| ECO A09 in 2001 play it! piket jeroen defeats white's strikovic aleksa in 62 moves | 1. Nf3 d5 2. c4 c6 3. b3 Nf6 4. g3 dxc4 5. bxc4 e5 6. Nc3 Qa5 7. Qc2 Be6 8. Rb1 Na6 9. Bg2 Bb4 10. Na4 e4 11. Nd4 Bg4 12. h3 Bh5 13. a3 Bc5 14. Nxc5 Nxc5 15. Nb3 Nxb3 16. Rxb3 O-O-O 17. Bb2 Rhe8 18. Re3 Bg6 19. Bc3 Qc5 20. Qb3 Nd7 21. O-O Nb6 22. Bxg7 Rxd2 23. Qc3 Nxc4 24. Rc1 Rd5 25. Qf6 Rf5 26. Qa1 Rd8 27. Bxe4 Rxf2 28. Bd4 Rxd4 29. Bxg6 Rf6 30. Bxh7 b5 31. Qc3 Rdd6 |
| ECO A04 in 1994 play it! piket jeroen defeats white's polugaevsky lev in 76 moves | 1. Nf3 g6 2. d4 Bg7 3. c4 d6 4. g3 Nf6 5. Bg2 O-O 6. O-O Nbd7 7. Nc3 e5 8. e4 c6 9. b3 exd4 10. Nxd4 Re8 11. h3 Nc5 12. Re1 a5 13. Bf4 h6 14. Qc2 Nfd7 15. Be3 Kh7 16. Rad1 Qb6 17. Nde2 Qb4 18. Rb1 a4 19. Bd2 axb3 20. axb3 Qb6 21. Be3 Qb4 22. Bd2 Qb6 23. Be3 Qb4 24. Red1 Ra3 25. Nb5 cxb5 26. Bd2 Qxb3 27. Rxb3 Rxb3 28. Bc3 Bxc3 29. Nxc3 bxc4 30. Rxd6 b5 31. f4 b4 32. Nd1 c3 33. e5 Nxe5 34. g4 Nc4 35. Rf6 Re7 36. Bd5 Na3 37. Qf2 c2 38. Qd2 Rd3 |
| ECO A04 in 1990 play it! piket jeroen defeats white's rapatinski konst in 74 moves | 1. Nf3 g6 2. c4 Bg7 3. Nc3 d6 4. d4 Nf6 5. e4 O-O 6. Be2 e5 7. dxe5 dxe5 8. Qxd8 Rxd8 9. Bg5 c6 10. Nxe5 Re8 11. O-O-O Na6 12. Nf3 Bg4 13. Bd3 Nc5 14. h3 Be6 15. b3 Nfd7 16. Kc2 Nxd3 17. Rxd3 Nc5 18. Re3 b5 19. Nd2 bxc4 20. bxc4 h6 21. Bf4 Rad8 22. Rb1 f5 23. f3 g5 24. Bh2 f4 25. Re2 Rd3 26. Na4 Rxd2+ 27. Rxd2 Nxa4 28. Rb7 Nb6 29. Bg1 Nxc4 30. Rd3 a5 31. Bc5 a4 32. Ra7 Rb8 33. Kc1 Ne5 34. Ra3 Nd7 35. Bd6 Bb2+ 36. Kc2 Bxa3 37. Bxb8 Nxb8 |
| ECO A06 in 2000 play it! piket jeroen defeats white's ljubojevic ljubo in 68 moves | 1. Nf3 d5 2. d4 Nf6 3. c4 c6 4. Nc3 e6 5. e3 Nbd7 6. Qc2 Bd6 7. Be2 O-O 8. O-O dxc4 9. Rd1 b5 10. e4 Be7 11. a4 Bb7 12. axb5 cxb5 13. e5 Nd5 14. Nxb5 N7b6 15. Nd6 Bxd6 16. Ng5 f5 17. exd6 Qxd6 18. Bxc4 h6 19. Bxd5 Bxd5 20. Nh3 Rfc8 21. Qd3 Be4 22. Bf4 Bxd3 23. Bxd6 Bc2 24. Re1 Rc6 25. Bc5 g5 26. Ra3 a5 27. Rc1 Be4 28. f4 g4 29. Nf2 Bd5 30. Nd3 Nc4 31. Rac3 Nd2 32. Ne5 Rc7 33. Bd6 Rxc3 34. Rxc3 Ne4 |
| ECO A06 in 2000 play it! piket jeroen defeats white's chuchelov vladim in 72 moves | 1. Nf3 d5 2. d4 Nf6 3. c4 e6 4. Bg5 dxc4 5. Qa4+ Nbd7 6. g3 a6 7. Qxc4 b5 8. Qc6 Rb8 9. Bxf6 gxf6 10. Bg2 Bb7 11. Qc2 c5 12. dxc5 Bxc5 13. O-O Rc8 14. Qb3 h5 15. Nc3 Bxf3 16. Bxf3 h4 17. Ne4 Qb6 18. Rac1 hxg3 19. hxg3 Ke7 20. Rfd1 Ne5 21. Bg2 a5 22. a4 bxa4 23. Qxa4 Bb4 24. e3 Rhd8 25. Rxc8 Rxc8 26. Qb3 Qc7 27. f4 Ng4 28. Bf3 f5 29. Bxg4 fxe4 30. Rd4 Rg8 31. Qd1 f5 32. Be2 Bc5 33. Qc2 Rxg3+ 34. Kf1 Rxe3 35. Rc4 Qxf4+ 36. Ke1 Bb4+ |
| ECO A06 in 1999 play it! piket jeroen defeats white's filippov valerij in 84 moves | 1. Nf3 d5 2. d4 Nf6 3. c4 e6 4. g3 dxc4 5. Bg2 c5 6. O-O Nc6 7. Qa4 Bd7 8. Qxc4 b5 9. Qd3 Rc8 10. Bg5 c4 11. Qd1 Be7 12. Nc3 a6 13. e4 b4 14. Bxf6 Bxf6 15. Ne2 O-O 16. e5 Be7 17. Nd2 c3 18. bxc3 bxc3 19. Nxc3 Nxd4 20. Nde4 Bc6 21. Rb1 h6 22. Nd6 Bxd6 23. Qxd4 Bxg2 24. Kxg2 Bb8 25. Qe3 Qa5 26. Ne4 Bxe5 27. Rfd1 Rc2 28. Rb7 f5 29. Qb3 Qxa2 30. Qxa2 Rxa2 31. Nc5 f4 32. Nxe6 f3+ 33. Kh3 Re8 34. Nd4 Rd8 35. Rb4 Rxf2 36. Kg4 h5+ 37. Kf5 Bxd4 38. Rbxd4 Rxd4 39. Rxd4 Re2 40. Rd1 f2 41. Rf1 a5 42. Kf4 a4 |
| ECO A05 in 2000 play it! piket jeroen defeats white's lputian smbat g in 92 moves | 1. Nf3 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. d4 O-O 6. Be2 e5 7. O-O Nc6 8. d5 Ne7 9. Nd2 a5 10. Rb1 Nd7 11. a3 f5 12. b4 Kh8 13. Qc2 Nf6 14. f3 axb4 15. axb4 c6 16. Nb3 fxe4 17. fxe4 cxd5 18. cxd5 Qb6+ 19. Kh1 Bd7 20. Na5 Ng4 21. h3 Rxf1+ 22. Bxf1 Rf8 23. Bg5 Nf2+ 24. Kh2 Nxh3 25. Bb5 Nxg5 26. Bxd7 Rf4 27. Nc4 Qc7 28. Bb5 Ng8 29. Kg1 Nf6 30. Rf1 Rg4 31. Qa2 Ngxe4 32. Nxe4 Rxe4 33. Qa5 Rxc4 34. Bxc4 Qxc4 35. Qd8+ Ng8 36. Qxd6 e4 37. Re1 Qd4+ 38. Kh1 Be5 39. Qc5 e3 40. Qxd4 Bxd4 41. d6 Nf6 42. g4 Nxg4 43. d7 Bb6 44. Kg2 Kg7 45. Rd1 Bd8 46. Rd4 Nf6 |
| ECO A05 in 1992 play it! piket jeroen defeats white's small vernon a in 100 moves | 1. Nf3 Nf6 2. d4 g6 3. c3 Bg7 4. Bg5 O-O 5. Nbd2 h6 6. Bh4 d5 7. Bxf6 exf6 8. e3 c6 9. Bd3 f5 10. Qc2 Nd7 11. h4 h5 12. O-O-O Re8 13. Kb1 b5 14. Nb3 a5 15. Nc1 Nb6 16. Ne2 Qd6 17. Nf4 Bd7 18. Be2 Nc4 19. Nd2 Re7 20. g3 Rae8 21. Rhg1 Bh6 22. Bd3 Bc8 23. Be2 Rb7 24. Ka1 Qd8 25. Rh1 Bf8 26. Bf1 Bd6 27. Bd3 Qf6 28. Bf1 Rbe7 29. Bd3 Bb7 30. Be2 Bc7 31. Bf1 Nd6 32. Bd3 Ne4 33. Nf1 b4 34. Rh2 bxc3 35. bxc3 c5 36. f3 c4 37. fxe4 cxd3 38. Nxd3 fxe4 39. Nc5 Ba6 40. Rf2 Qc6 41. Nxa6 Qxa6 42. c4 dxc4 43. Rc1 Rb8 44. Qxc4 Qb6 45. Qc2 Bd6 46. Rb1 Bb4 47. Rc1 Ba3 48. Rd1 Reb7 49. Qb3 Qd6 50. Qc3 Rc7 |
| ECO A04 in 1987 play it! piket jeroen defeats white's werner dimo in 72 moves | 1. Nf3 g6 2. c4 Bg7 3. Nc3 d6 4. g3 Nf6 5. Bg2 O-O 6. O-O Nc6 7. d3 e5 8. Rb1 a5 9. a3 h6 10. b4 axb4 11. axb4 Be6 12. Nd2 Rb8 13. b5 Ne7 14. Bb2 Qd7 15. c5 Bh3 16. Nc4 Bxg2 17. Kxg2 Qe6 18. b6 d5 19. bxc7 Rbc8 20. Nd6 Rxc7 21. Ba3 d4 22. Ncb5 Rd7 23. Qb3 Nfd5 24. h3 f5 25. Nc4 f4 26. c6 bxc6 27. Bxe7 Rxe7 28. Nbd6 fxg3 29. fxg3 Rxf1 30. Kxf1 Qxh3+ 31. Kf2 Qh2+ 32. Kf3 Kh7 33. Qb8 Nc3 34. Re1 e4+ 35. dxe4 Nxe4 36. Nxe4 Rf7+ |
| ECO A04 in 1993 play it! piket jeroen defeats white's illescas cordoba in 38 moves | 1. Nf3 d6 2. d4 g6 3. c4 Bg7 4. e4 e5 5. Nc3 exd4 6. Nxd4 Nc6 7. Be3 Nge7 8. h4 f5 9. exf5 Nxf5 10. Nxf5 Bxf5 11. Be2 Qd7 12. Qd2 O-O-O 13. O-O Rde8 14. Rac1 Bg4 15. Nd5 Bxe2 16. Qxe2 Re4 17. c5 dxc5 18. Rxc5 Bd4 19. Qd3 Rxe3 |
| ECO A08 in 2000 play it! piket jeroen defeats white's maiwald jensuwe in 98 moves | 1. Nf3 d5 2. g3 c5 3. Bg2 Nc6 4. O-O Nf6 5. d3 Bg4 6. h3 Bh5 7. c4 d4 8. b4 cxb4 9. a3 e6 10. Qa4 Nd7 11. Qb5 Bxf3 12. Bxf3 Rb8 13. axb4 a6 14. Qa4 Bxb4 15. Bxc6 bxc6 16. Qxa6 Rb6 17. Qa7 Qc8 18. Nd2 O-O 19. Ne4 c5 20. f4 f5 21. Ng5 Qc6 22. Nf3 h6 23. Ra2 Rfb8 24. Kh2 Kh7 25. Rg1 Qd6 26. Rf1 Bc3 27. Rg1 R8b7 28. Qa8 Rb8 29. Qa4 R8b7 30. Qa8 e5 31. fxe5 Nxe5 32. Qc8 Nd7 33. Bf4 Qc6 34. Ra8 Qxc8 35. Rxc8 Re6 36. Rg2 Ba5 37. Kg1 Rb1+ 38. Kf2 Rb2 39. Kf1 Rb1+ 40. Kf2 Rb2 41. Kf1 Kg6 42. Bc7 Rc6 43. Rd8 Rxc7 44. Rxd7 Rb1+ 45. Kf2 Be1+ 46. Nxe1 Rxd7 47. Nf3 Re7 48. Rg1 Rb2 49. Re1 Re3 |
| ECO A22 in 1996 play it! piket jeroen defeats white's van wely loek in 62 moves | 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. e3 Bb4 5. Qc2 Bxc3 6. Qxc3 Qe7 7. a3 a5 8. b3 O-O 9. Bb2 Re8 10. d3 d5 11. cxd5 Nxd5 12. Qc2 Bg4 13. Be2 Rad8 14. O-O Rd6 15. Qc4 Qd7 16. Rac1 Nb6 17. Qc2 Rg6 18. Kh1 Rh6 19. Ng1 Rd8 20. Rfd1 Rd6 21. Nf3 Qf5 22. b4 axb4 23. axb4 Bxf3 24. gxf3 Nd5 25. b5 Nd4 26. exd4 Rh6 27. Rg1 Nf4 28. Rg4 Qh5 29. h4 Qxh4+ 30. Rxh4 Rxh4+ 31. Kg1 Rd6 |