| ECO A05 in 1987 play it! speelman jonatha defeats black's greenfeld alon in 63 moves | 1. Nf3 Nf6 2. c4 b6 3. g3 c5 4. Bg2 Bb7 5. O-O g6 6. Nc3 Bg7 7. d4 cxd4 8. Qxd4 Nc6 9. Qf4 O-O 10. Qh4 Rc8 11. Bh6 Nb8 12. b3 d6 13. Rad1 Rc5 14. Bxg7 Kxg7 15. Qd4 Nbd7 16. e4 a6 17. Rfe1 Qa8 18. Na4 Ra5 19. Nxb6 Nxb6 20. Qxb6 Rxa2 21. Rd2 Rxd2 22. Nxd2 Rb8 23. Qc7 Kf8 24. e5 Bxg2 25. exf6 exf6 26. f3 Bh3 27. Re7 Be6 28. Ne4 Rxb3 29. Qxd6 Rb1+ 30. Kf2 Rb2+ 31. Ke3 Rb3+ 32. Kd4 |
| ECO A05 in 1992 play it! speelman jonatha defeats black's rodriguez cesar in 61 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. b4 Nh5 10. g3 Bh3 11. Re1 h6 12. Nh4 Nf6 13. c5 Qd7 14. Ba3 Ne8 15. Rc1 Kh7 16. Bb5 c6 17. dxc6 bxc6 18. Ba4 dxc5 19. Qxd7 Bxd7 20. Red1 Bc8 21. b5 cxb5 22. Nxb5 Bf6 23. Bxc5 a6 24. Nc3 Be6 25. Nd5 Bxd5 26. exd5 Ng7 27. d6 Nef5 28. Nxf5 Nxf5 29. d7 Rg8 30. Rb1 Nd4 31. Kg2 |
| ECO A05 in 1988 play it! speelman jonatha defeats black's gulko boris f us in 113 moves | 1. Nf3 Nf6 2. c4 b6 3. g3 Bb7 4. d4 e6 5. Bg2 Be7 6. O-O O-O 7. Nc3 Ne4 8. Bd2 Bf6 9. Rc1 c5 10. d5 Nxc3 11. Bxc3 Bxc3 12. Rxc3 exd5 13. Nh4 Na6 14. Nf5 Qf6 15. Ne3 Rae8 16. Bxd5 Bc6 17. Bxc6 dxc6 18. Qa4 Nc7 19. Rd1 a6 20. Rd7 b5 21. cxb5 axb5 22. Qf4 Qxf4 23. gxf4 Na6 24. Ra3 Nb4 25. Raa7 Nd5 26. Nxd5 cxd5 27. Kf1 d4 28. Rac7 Rc8 29. Rxf7 Rxc7 30. Rxc7 Rf5 31. b3 h6 32. h4 b4 33. e3 dxe3 34. fxe3 g5 35. hxg5 hxg5 36. Kf2 gxf4 37. e4 Rh5 38. Kf3 Rh2 39. Rxc5 Rxa2 40. Rb5 Kf7 41. Kxf4 Rb2 42. Rxb4 Ke6 43. Rb6+ Kd7 44. Ke5 Rh2 45. Rd6+ Ke7 46. Rd5 Rb2 47. Rb5 Kd7 48. Rb7+ Kc6 49. Rb4 Kd7 50. Rd4+ Ke7 51. b4 Rb1 52. Kd5 Kd7 53. e5 Re1 54. b5 Re2 55. Kc5+ Kc7 56. b6+ Kc8 57. Kd6 |
| ECO A05 in 1987 play it! speelman jonatha defeats black's benjamin joel us in 73 moves | 1. Nf3 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Be2 Bxc3 6. bxc3 d6 7. O-O e5 8. Ne1 Nbd7 9. f3 Ne8 10. e4 f5 11. exf5 Rxf5 12. d4 Rf8 13. Be3 Nef6 14. c5 exd4 15. cxd4 Nd5 16. Bc4 Nf6 17. Bg5 dxc5 18. dxc5 Be6 19. Qb3 h6 20. Bh4 b6 21. Nd3 c6 22. Rfe1 Bf7 23. Qb2 bxc5 24. Ne5 Qb6 25. Qc1 Be8 26. Rb1 Qa5 27. Rb7 Kh8 28. Bf2 Rd8 29. Bb3 Qa6 30. Qxc5 Rg8 31. Rxa7 Qb5 32. Qxb5 cxb5 33. Rd1 Rc8 34. h3 Nc3 35. Rd2 Rf8 36. Be6 Nb1 37. Bxc8 |
| ECO A05 in 2007 play it! speelman jonatha defeats black's smith andrew p in 63 moves | 1. Nf3 Nf6 2. c4 c5 3. Nc3 g6 4. d4 Bg7 5. e4 O-O 6. Be2 d6 7. O-O Bg4 8. d5 b5 9. e5 Bxf3 10. Bxf3 Nfd7 11. exd6 exd6 12. Nxb5 Nb6 13. Be2 a6 14. Na3 N8d7 15. Rb1 f5 16. Bd2 f4 17. b4 Ne5 18. bxc5 dxc5 19. Rb3 Nc8 20. g3 g5 21. Bg4 Nd6 22. Be6+ Kh8 23. Qh5 Ne4 24. Bc1 fxg3 25. hxg3 h6 26. Qe2 Nd6 27. f4 gxf4 28. gxf4 Nef7 29. Kh1 Bd4 30. Nc2 Ne4 31. Qxe4 Qh4+ 32. Rh3 |
| ECO A04 in 1990 play it! speelman jonatha defeats black's defirmian nick e in 103 moves | 1. Nf3 c5 2. c4 Nc6 3. Nc3 Nf6 4. d4 cxd4 5. Nxd4 e6 6. a3 d5 7. cxd5 exd5 8. Bg5 Be7 9. e3 O-O 10. Bb5 Nxd4 11. Qxd4 Be6 12. O-O a6 13. Be2 h6 14. Bh4 Ne4 15. Bxe7 Nxc3 16. Qxc3 Qxe7 17. Qd4 Rac8 18. Rac1 Rc7 19. Bf3 Rfc8 20. Rxc7 Qxc7 21. Bxd5 Bxd5 22. Qxd5 Rd8 23. Qb3 Rd2 24. Qb4 Rd7 25. h3 Qc2 26. a4 Qd2 27. Qe4 Rc7 28. b4 Qd6 29. Rb1 g6 30. b5 axb5 31. axb5 Kg7 32. g3 b6 33. Kg2 Rc5 34. Rb3 Qd7 35. Qh4 Kh7 36. Qd4 Qe6 37. Rb4 Qe8 38. Qf6 Qe6 39. Rf4 Rxb5 40. Qxf7+ Qxf7 41. Rxf7+ Kg8 42. Rb7 Rb2 43. h4 b5 44. g4 b4 45. Kg3 b3 46. g5 hxg5 47. hxg5 Kf8 48. f4 Ke8 49. Kf3 Kd8 50. Ke4 Kc8 51. Rb4 Kc7 52. Ke5 |
| ECO A05 in 1986 play it! speelman jonatha defeats black's plaskett jim eng in 63 moves | 1. Nf3 Nf6 2. d4 c5 3. d5 g6 4. Nc3 Bg7 5. e4 O-O 6. Be2 d6 7. O-O Na6 8. h3 Nc7 9. Re1 b6 10. Bf4 Bb7 11. Bf1 Qd7 12. Qd2 b5 13. a3 Rfe8 14. b4 cxb4 15. axb4 a6 16. Bh6 Bh8 17. Rad1 Rac8 18. Nd4 Na8 19. Ncxb5 axb5 20. Bxb5 Qc7 21. c4 Nb6 22. Bxe8 Nxe8 23. Rc1 Nxc4 24. Qd3 Bxd4 25. Qxd4 Ba6 26. Ra1 Qb7 27. b5 Bxb5 28. Ra7 Qb8 29. Rxe7 Ne5 30. Rb1 Rc2 31. Rxb5 Qxb5 32. Qb6 |
| ECO A04 in 1992 play it! speelman jonatha defeats black's hun polgar judit in 115 moves | 1. Nf3 c5 2. c4 g6 3. e3 Bg7 4. d4 Nf6 5. Nc3 O-O 6. Be2 cxd4 7. exd4 d5 8. O-O b6 9. Ne5 Bb7 10. Bf3 e6 11. Bg5 h6 12. Bxf6 Bxf6 13. cxd5 exd5 14. Re1 Na6 15. Qa4 Nc7 16. Nd7 b5 17. Nxf6+ Qxf6 18. Qa5 Qb6 19. Qxb6 axb6 20. Re7 Rfc8 21. Nxb5 Nxb5 22. Rxb7 Rxa2 23. Rd1 Rxb2 24. Bxd5 Rd2 25. Re1 Nc7 26. Rc1 Rxd4 27. Bf3 Rd7 28. h4 Kg7 29. Kh2 b5 30. Bg4 f5 31. Bf3 b4 32. Rc6 g5 33. hxg5 hxg5 34. g4 Rf7 35. Kg2 b3 36. gxf5 b2 37. Rxb2 Rd8 38. f6+ Kf8 39. Re2 Nb5 40. Rd2 Rfd7 41. Rxd7 Rxd7 42. Bh5 Rd8 43. Kg3 Nd4 44. Rc7 Ne6 45. Rh7 Kg8 46. Bg6 Rd6 47. f7+ Kf8 48. Rh8+ Kg7 49. Rg8+ Kf6 50. Bh5 Rd3+ 51. f3 g4 52. f8=Q+ Nxf8 53. Rxf8+ Kg7 54. Rf7+ Kh6 55. Bxg4 Kg6 56. Ra7 Rd4 57. f4 Rd3+ 58. Bf3 |
| ECO A05 in 2006 play it! speelman jonatha defeats black's lopez alex in 45 moves | 1. Nf3 Nf6 2. d4 g6 3. Bg5 Bg7 4. Nbd2 O-O 5. e3 b6 6. Bd3 Bb7 7. c3 d6 8. O-O Nbd7 9. e4 e5 10. Re1 Qc8 11. Rc1 Nh5 12. Nc4 Re8 13. Bb1 Nf8 14. h3 Ne6 15. Be3 Nef4 16. Kh2 f5 17. exf5 gxf5 18. Nh4 Qe6 19. Bxf4 Nxf4 20. Ne3 exd4 21. cxd4 Nd5 22. Nexf5 Qxe1 23. Qg4 |
| ECO A07 in 2003 play it! speelman jonatha defeats black's lahlum hans olav in 95 moves | 1. Nf3 d5 2. g3 Nf6 3. Bg2 c6 4. O-O Bf5 5. d3 Nbd7 6. c4 dxc4 7. dxc4 e5 8. Nc3 Qc7 9. Nh4 Be6 10. b3 Bc5 11. Qc2 O-O 12. Na4 Be7 13. Nf5 Bxf5 14. Qxf5 Rfe8 15. Be3 Nf8 16. Rad1 Ne6 17. Qb1 Ng4 18. Bd2 Rad8 19. h3 Nf6 20. Be3 Rxd1 21. Rxd1 b6 22. b4 Rd8 23. Rxd8+ Nxd8 24. c5 b5 25. Nc3 a5 26. a3 a4 27. Qd3 Ne6 28. Nxb5 cxb5 29. Qxb5 Nd4 30. Bxd4 exd4 31. Qxa4 g6 32. Qb5 Nd7 33. a4 Nxc5 34. bxc5 Bxc5 35. Bd5 Bb6 36. Qe8+ Kg7 37. Kg2 Qa7 38. Qe5+ Kg8 39. Qf6 Bc5 40. a5 Qd7 41. Bc4 Qb7+ 42. Kh2 Qd7 43. a6 Ba7 44. h4 Qc7 45. Bb3 Bc5 46. Kg2 Qd7 47. h5 d3 48. hxg6 |
| ECO A04 in 1996 play it! speelman jonatha defeats black's garcia ilundain in 103 moves | 1. Nf3 f5 2. d3 Nf6 3. Bg5 Nc6 4. Bxf6 exf6 5. d4 d5 6. e3 Be6 7. Nbd2 Qd7 8. c3 Ne7 9. Bd3 Nc8 10. Qc2 Nd6 11. c4 c6 12. O-O Be7 13. Rfc1 O-O 14. Ne1 Rfe8 15. Rab1 a5 16. c5 Ne4 17. Nf1 Reb8 18. f3 Ng5 19. Ng3 g6 20. Ne2 Bf7 21. Nc3 Re8 22. Na4 Bd8 23. f4 Ne4 24. g3 Kh8 25. Ng2 g5 26. Rf1 Rg8 27. a3 Bh5 28. Be2 Bxe2 29. Qxe2 Bc7 30. Nc3 b6 31. Nxe4 fxe4 32. cxb6 Bxb6 33. Rbc1 Bc7 34. Rc2 Bd6 35. Qh5 Rg7 36. Rcf2 c5 37. fxg5 fxg5 38. Qd1 Re8 39. Rf5 Qb7 40. dxc5 Bxc5 41. Rxd5 Bb6 42. Rdf5 Qc6 43. Qb3 Rg6 44. a4 Ree6 45. Qa3 Rd6 46. b4 Rd3 47. Qb2+ Qc3 48. Qf2 axb4 49. Rf8+ Kg7 50. Rg8+ Kh6 51. Qf8+ Kh5 52. g4+ |
| ECO A04 in 2006 play it! speelman jonatha defeats black's van blitterswijk in 61 moves | 1. Nf3 d6 2. d4 f5 3. Nc3 Nf6 4. Bg5 d5 5. e3 e6 6. Bd3 c5 7. dxc5 Bxc5 8. O-O Nc6 9. Na4 Be7 10. c4 O-O 11. a3 b6 12. Nc3 Kh8 13. Rc1 Bb7 14. Be2 Rc8 15. Qa4 dxc4 16. Bxc4 Nd5 17. Bxd5 exd5 18. Bxe7 Qxe7 19. Nxd5 Qf7 20. Nf4 Rg8 21. h4 Rge8 22. Rc3 Qf6 23. Rfc1 a6 24. Nd4 b5 25. Qc2 Ne7 26. Qb3 Qxh4 27. Rxc8 Bxc8 28. Qf7 Rg8 29. Rc7 Ng6 30. Qxg6 Qxf4 31. Qxg7+ |
| ECO A07 in 1995 play it! speelman jonatha defeats black's kharlov a in 103 moves | 1. Nf3 d5 2. g3 Bg4 3. Bg2 Nd7 4. O-O c6 5. d4 Ngf6 6. Nbd2 e6 7. Re1 Bd6 8. e4 dxe4 9. Nxe4 Nxe4 10. Rxe4 Nf6 11. Re1 O-O 12. c3 Re8 13. Qb3 Qc7 14. Ne5 Bh5 15. Nc4 Re7 16. Bg5 h6 17. Bxf6 gxf6 18. a4 Rd7 19. Nxd6 Rxd6 20. a5 Rad8 21. Qc4 Bg6 22. b4 R8d7 23. Qe2 Kg7 24. h4 Qd8 25. Qg4 Kh7 26. Qf4 Bc2 27. Rac1 Bb3 28. a6 b5 29. Bxc6 Rxc6 30. Qe4+ f5 31. Qxc6 Bc4 32. Re5 Rc7 33. Qf3 Bd5 34. Rxd5 Qxd5 35. Qxd5 exd5 36. Re1 Kg6 37. Re5 Rxc3 38. Rxd5 Rc6 39. Rxb5 Rxa6 40. Kg2 Ra3 41. Ra5 Rb3 42. Ra4 h5 43. f4 f6 44. d5 Rd3 45. Rxa7 Rxd5 46. Rb7 Rd3 47. b5 Rb3 48. b6 Kh6 49. Kf2 Kg6 50. Ke2 Rxg3 51. Rc7 Rb3 52. b7 |
| ECO A05 in 1995 play it! speelman jonatha defeats black's peek marcel in 73 moves | 1. Nf3 Nf6 2. c4 g6 3. Nc3 d5 4. cxd5 Nxd5 5. Qb3 Nb6 6. d4 Bg7 7. Bf4 Be6 8. Qc2 Nc6 9. e4 Nb4 10. Qb1 O-O 11. a3 Na6 12. d5 Bd7 13. Be5 e6 14. Bxg7 Kxg7 15. Bxa6 bxa6 16. O-O exd5 17. exd5 Rb8 18. Qd3 Qf6 19. Rfd1 Bf5 20. Qxa6 Nxd5 21. Qxa7 Nf4 22. Qd4 Qxd4 23. Rxd4 Ne6 24. Rd2 Nc5 25. Nd4 Rfd8 26. Rad1 Re8 27. h3 Nb3 28. Nxf5+ gxf5 29. Rd3 c5 30. Kh2 Re6 31. Rg3+ Rg6 32. Re3 Nd4 33. Na4 Rc6 34. b4 Ne6 35. Nxc5 Nxc5 36. Rc1 Ra8 37. Rxc5 |
| ECO A06 in 1979 play it! speelman jonatha defeats black's mestel a jonatha in 71 moves | 1. Nf3 d5 2. d4 e6 3. g3 c5 4. Bg2 Nc6 5. O-O cxd4 6. Nxd4 Bc5 7. Nb3 Bb6 8. c4 Nf6 9. cxd5 Nxd5 10. Nc3 Nxc3 11. Qxd8+ Nxd8 12. bxc3 Bd7 13. c4 Bc6 14. Ba3 Bxg2 15. Kxg2 Nc6 16. Rfd1 Rd8 17. e3 f6 18. Bd6 Rd7 19. Rab1 Kd8 20. c5 Bc7 21. Nd4 Nxd4 22. Rxb7 Bxd6 23. Rxd7+ Kxd7 24. Rxd4 Kc6 25. Rxd6+ Kxc5 26. Rxe6 a5 27. Re7 g6 28. Rb7 Kc6 29. Rf7 f5 30. a4 Re8 31. Rxh7 Re4 32. Rh4 Rxh4 33. gxh4 Kc5 34. f4 Kb4 35. e4 fxe4 36. Kf2 |
| ECO A05 in 1985 play it! speelman jonatha defeats black's alburt lev o in 101 moves | 1. Nf3 Nf6 2. c4 e6 3. Nc3 c5 4. g3 d5 5. cxd5 Nxd5 6. Bg2 Nc6 7. O-O Be7 8. d4 O-O 9. Rb1 Qa5 10. Bd2 Nxc3 11. Bxc3 Qxa2 12. e3 Rd8 13. Qe2 cxd4 14. Nxd4 Nxd4 15. Bxd4 Qb3 16. Rbc1 Bd6 17. Qh5 e5 18. Bxe5 Bxe5 19. Qxe5 Be6 20. h4 Rd7 21. Rc7 Rxc7 22. Qxc7 Bd5 23. Rc1 h5 24. Qe5 Bxg2 25. Kxg2 g6 26. Rc3 Qa4 27. Qd5 Re8 28. Rc7 Qe4+ 29. Qxe4 Rxe4 30. Rxb7 Ra4 31. Kf3 Kg7 32. e4 Kf6 33. Kf4 Ra1 34. Rc7 Ra2 35. Rb7 Ra4 36. Rb3 Rc4 37. f3 Rd4 38. Rb5 Rd2 39. Rb7 Re2 40. e5+ Ke6 41. b4 Ra2 42. Rc7 Ra4 43. Kg5 Rxb4 44. Rxa7 Rb3 45. Ra6+ Ke7 46. Rf6 Rb2 47. Kh6 Rg2 48. Kg7 Rxg3 49. f4 Rg4 50. Rxf7+ Ke6 51. Kf8 |
| ECO A06 in 2002 play it! speelman jonatha defeats black's cooper john g in 45 moves | 1. Nf3 d5 2. b3 c5 3. e3 Nc6 4. Bb5 Bg4 5. h3 Bh5 6. Ba3 e6 7. c4 Bd6 8. cxd5 exd5 9. Bxc6+ bxc6 10. Nc3 Nf6 11. Rc1 O-O 12. Na4 c4 13. Bxd6 Qxd6 14. bxc4 d4 15. g4 Nxg4 16. hxg4 Bxg4 17. Rg1 Bxf3 18. Qxf3 Qa3 19. Qd1 Rab8 20. Rg3 Rfe8 21. Kf1 dxe3 22. Rxe3 Qd6 23. Nc3 |
| ECO A04 in 1979 play it! speelman jonatha defeats black's morrison graham in 47 moves | 1. Nf3 c5 2. g3 Nc6 3. d4 cxd4 4. Nxd4 Qb6 5. Nb3 Nf6 6. Bg2 d6 7. Nc3 e6 8. a4 a6 9. O-O Be7 10. a5 Qc7 11. Be3 Nd7 12. Na4 O-O 13. Nb6 Rb8 14. c4 Nce5 15. Rc1 Nc5 16. h3 Ned7 17. Nxc5 dxc5 18. Qb3 Ne5 19. Bf4 g5 20. Bxe5 Qxe5 21. Rcd1 Qxe2 22. Rfe1 Qh5 23. Qe3 Qh6 24. Qe5 |
| ECO A04 in 1999 play it! speelman jonatha defeats black's ward christopher in 41 moves | 1. Nf3 c5 2. b3 d6 3. e3 e5 4. Bb5+ Nd7 5. O-O f5 6. d4 cxd4 7. exd4 e4 8. Ng5 Nf6 9. Ne6 Qb6 10. d5 Kf7 11. a4 Ne5 12. Be3 Qa5 13. b4 Qxb4 14. Bd2 Qb2 15. Bc3 Qxa1 16. Bxa1 Bxe6 17. dxe6+ Kxe6 18. Bxe5 Kxe5 19. Nd2 Be7 20. Qa1+ Kf4 21. Qc3 |
| ECO A05 in 1990 play it! speelman jonatha defeats black's solomon stephen in 85 moves | 1. Nf3 Nf6 2. c4 e6 3. Nc3 d5 4. d4 Be7 5. Bg5 O-O 6. e3 Nbd7 7. Qc2 c5 8. cxd5 exd5 9. Bd3 c4 10. Bf5 Re8 11. O-O a6 12. a4 g6 13. Bh3 Nf8 14. Bxc8 Rxc8 15. Bxf6 Bxf6 16. a5 Ne6 17. b3 Qd6 18. Rfb1 Re7 19. Na4 c3 20. b4 Rc4 21. Nb6 Rc6 22. Qb3 Nc7 23. Rc1 Rxb6 24. axb6 Nb5 25. Ra5 Qc6 26. Rxb5 Qxb5 27. Rxc3 Qxb6 28. Qxd5 Qxb4 29. Rc8+ Kg7 30. g4 Qb1+ 31. Kg2 Qe4 32. Qxe4 Rxe4 33. h3 Re6 34. g5 Be7 35. Rc7 b5 36. d5 Re4 37. Nd4 b4 38. h4 a5 39. Ra7 Bd8 40. Ne6+ Kg8 41. Nxd8 b3 42. Rxa5 Rb4 43. Ra1 |