| ECO A07 in 1996 play it! koch martin defeats white's stempel markus in 70 moves | 1. Nf3 d5 2. g3 Nf6 3. Bg2 c5 4. d3 Nc6 5. Nbd2 Qc7 6. O-O e6 7. e4 dxe4 8. dxe4 Be7 9. Re1 O-O 10. c3 b6 11. e5 Nd5 12. h4 Rd8 13. a3 Qd7 14. Nf1 Bb7 15. N1h2 Nc7 16. Bd2 Na5 17. b3 c4 18. b4 Nb3 19. Ra2 Nb5 20. Qe2 Nxa3 21. Be3 Nb5 22. Qxc4 Bd5 23. Qg4 Nxc3 24. Rb2 Qa4 25. Bh6 g6 26. h5 Qxb4 27. Qh3 Rac8 28. Ng4 Bxf3 29. Bxf3 Na4 30. Rbb1 Rc3 31. Bg2 Rdc8 32. Nf6+ Bxf6 33. exf6 Qb5 34. hxg6 hxg6 35. Bf4 Qh5 |
| ECO A05 in 2004 play it! koch martin defeats white's appeldorn dirk in 126 moves | 1. Nf3 Nf6 2. d4 c5 3. dxc5 e6 4. b4 a5 5. c3 axb4 6. cxb4 d6 7. Ba3 Qc7 8. cxd6 Bxd6 9. Qb3 O-O 10. Nc3 Qe7 11. Rb1 Nc6 12. e4 Rxa3 13. Qxa3 Bxb4 14. Rxb4 Nxb4 15. Qb2 Qd6 16. e5 Qb6 17. Nb5 Nfd5 18. Qd2 Bd7 19. Nd6 Nc6 20. Bc4 Nxe5 21. Nxe5 Qxd6 22. Nxd7 Qxd7 23. O-O Rc8 24. Bb3 Qc6 25. Rd1 h6 26. Qd4 Nc3 27. Re1 Qc5 28. Qd7 Qc7 29. Qd4 Qa5 30. Qd7 Rb8 31. Re3 Nxa2 32. Rxe6 fxe6 33. Qxe6+ Kh8 34. Bxa2 Ra8 35. Bc4 Qa1+ 36. Bf1 Qb1 37. h3 b5 38. g3 b4 39. f3 Ra1 40. Qc8+ Kh7 41. Kh2 b3 42. Qc5 Qc2+ 43. Qxc2+ bxc2 44. Bd3+ Kg8 45. Bxc2 Ra2 46. h4 Rxc2+ 47. Kh3 Kf7 48. Kg4 Rc4+ 49. Kf5 Rc5+ 50. Ke4 Kf6 51. Kd4 Ra5 52. Ke4 g5 53. hxg5+ hxg5 54. Ke3 Ke5 55. Ke2 Kd4 56. f4 g4 57. Kf1 Ke3 58. Kg2 Ra2+ 59. Kf1 Rb2 60. f5 Rf2+ 61. Kg1 Kf3 62. f6 Kxg3 63. f7 Rxf7 |
| ECO A17 in 2004 play it! koch martin defeats white's von rosenberg cl in 58 moves | 1. c4 Nf6 2. Nc3 e6 3. d4 d5 4. Nf3 Be7 5. Bg5 h6 6. Bh4 Nbd7 7. e3 c6 8. Bd3 O-O 9. O-O Re8 10. Rc1 Nf8 11. Qc2 a5 12. cxd5 exd5 13. Bf5 Bxf5 14. Qxf5 Qd7 15. Qxd7 N6xd7 16. Bxe7 Rxe7 17. Na4 Ne6 18. Rfd1 f6 19. h3 Kf7 20. Nc3 Nc7 21. Ne2 Ne6 22. Rc2 Nb6 23. b3 a4 24. Rdc1 axb3 25. axb3 Ra3 26. Nd2 Re8 27. Ng3 Rea8 28. Nf5 Nd8 29. b4 Ra1 |
| ECO A16 in 2004 play it! koch martin defeats white's conrad werner in 26 moves | 1. c4 Nf6 2. Nc3 g6 3. d4 Bg7 4. e4 d6 5. Nf3 O-O 6. Be2 e5 7. dxe5 dxe5 8. Qxd8 Rxd8 9. Bg5 c6 10. Nxe5 Re8 11. O-O-O h6 12. Bf4 Na6 13. h3 g5 |
| ECO A10 in 1997 play it! koch martin defeats white's francis ronald d in 46 moves | 1. c4 g6 2. d4 Bg7 3. e4 d6 4. Nc3 Nf6 5. Be2 O-O 6. Nf3 e5 7. d5 a5 8. h4 Bg4 9. Be3 Nbd7 10. Nd2 Bxe2 11. Qxe2 Ne8 12. g4 f5 13. gxf5 gxf5 14. f3 Nef6 15. Qg2 fxe4 16. fxe4 Nh5 17. O-O-O Nf4 18. Qg3 Kh8 19. Rdg1 Bh6 20. Kc2 Rg8 21. Qe1 Qe7 22. Nd1 Nf6 23. Bxf4 Bxf4 |
| ECO A22 in 1995 play it! koch martin defeats white's leifkes christia in 60 moves | 1. c4 e5 2. Nc3 Nf6 3. g3 d5 4. cxd5 Nxd5 5. Bg2 Nxc3 6. bxc3 c6 7. Bb2 Be6 8. Nf3 Bd6 9. O-O Nd7 10. d4 e4 11. Nd2 f5 12. e3 Qg5 13. f4 Qe7 14. c4 Nf6 15. Qe2 h6 16. Bh3 h5 17. Kf2 h4 18. Rh1 hxg3+ 19. hxg3 O-O-O 20. a4 Rh6 21. c5 Bc7 22. Nc4 Rdh8 23. Kg2 Nd5 24. a5 a6 25. Nb6+ Bxb6 26. axb6 g5 27. fxg5 Qxg5 28. Rae1 Rg8 29. Reg1 Qxg3+ 30. Kf1 Nxe3+ |
| ECO A15 in 2002 play it! koch martin defeats white's baermann joachim in 58 moves | 1. c4 Nf6 2. Nf3 b6 3. Nc3 Bb7 4. d4 e6 5. a3 Be7 6. d5 exd5 7. cxd5 d6 8. e4 O-O 9. Bc4 Nbd7 10. O-O Ng4 11. Bf4 Bf6 12. h3 Nge5 13. Bxe5 Nxe5 14. Nxe5 Bxe5 15. Qd2 f5 16. exf5 Rxf5 17. Ne4 Qh4 18. Rae1 Raf8 19. Re2 Bc8 20. Qd3 a5 21. a4 R5f7 22. b3 Bg4 23. f3 Bf5 24. Qd1 Bxe4 25. Rxe4 Qg3 26. Be2 Qh2+ 27. Kf2 Bg3+ 28. Ke3 Qxg2 29. Kd2 Rxf3 |
| ECO A10 in 2002 play it! koch martin defeats white's von rosenberg cl in 22 moves | 1. c4 b6 2. Nc3 Bb7 3. d4 f5 4. Bg5 g6 5. e3 Bg7 6. Nf3 Nf6 7. Be2 d6 8. O-O O-O 9. Nd2 Nbd7 10. Bf3 Bxf3 11. Qxf3 e5 |
| ECO A22 in 1996 play it! koch martin defeats white's mannke tim in 112 moves | 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. d4 exd4 5. Nxd4 Ne5 6. e3 d5 7. cxd5 Nxd5 8. Nxd5 Qxd5 9. Qb3 Qxb3 10. Nxb3 Be6 11. Nd2 Rd8 12. a3 c6 13. Be2 Be7 14. O-O O-O 15. Rb1 Rd7 16. Nf3 Bf6 17. Nd4 Bc4 18. Bxc4 Nxc4 19. b3 Nb6 20. Bb2 Rfd8 21. Ba1 Nd5 22. Ne2 Bxa1 23. Rxa1 Nf6 24. Nc3 Kf8 25. b4 Rd3 26. Rfd1 Ke7 27. Rxd3 Rxd3 28. Na4 Nd7 29. Kf1 b5 30. Nb2 Rb3 31. Nd1 c5 32. bxc5 Nxc5 33. Ra2 Na4 34. Ke2 a5 35. Kd2 Nb6 36. Nb2 Rxb2+ 37. Rxb2 Nc4+ 38. Kc3 Nxb2 39. Kxb2 Kd6 40. Kb3 Kd5 41. f3 f5 42. h4 g6 43. g3 h6 44. Kc3 g5 45. hxg5 hxg5 46. Kb3 g4 47. fxg4 fxg4 48. Kc3 Ke4 49. Kd2 b4 50. axb4 axb4 51. Ke2 b3 52. Kd2 b2 53. Kc2 Kxe3 54. Kxb2 Kf3 55. Kc2 Kxg3 56. Kd2 Kf2 |
| ECO A00 in 2002 play it! koch martin defeats white's breitenstein eri in 56 moves | 1. e3 g6 2. Nf3 Bg7 3. d4 d6 4. Bd3 Nf6 5. O-O O-O 6. Bd2 Nbd7 7. Nc3 b6 8. Qe2 Bb7 9. Nb5 a6 10. Nc3 c5 11. Ng5 e5 12. a3 h6 13. Nge4 exd4 14. exd4 cxd4 15. Na4 Bxe4 16. Bxe4 Re8 17. Rae1 Rxe4 18. Qf3 Rxe1 19. Rxe1 Rc8 20. b3 b5 21. Nb2 Rxc2 22. Bc1 Ne5 23. Qd1 Qc7 24. Bf4 Rxb2 25. Qxd4 Rxb3 26. Rc1 Rd3 27. Rxc7 Rxd4 28. g3 Nd5 |
| ECO A00 in 2004 play it! koch martin defeats white's fricke dirk in 44 moves | 1. c3 d5 2. d4 c5 3. dxc5 e5 4. b4 Nf6 5. Nf3 Nc6 6. Bg5 a6 7. Bxf6 gxf6 8. Nbd2 Bg7 9. e4 d4 10. Nc4 O-O 11. cxd4 exd4 12. a3 f5 13. e5 Re8 14. Nd6 Nxe5 15. Nxe8 Qxe8 16. Kd2 d3 17. Qe1 Nc4+ 18. Kxd3 Qa4 19. Qb1 Be6 20. Qc1 Qb3+ 21. Ke2 Re8 22. Ke1 Bc3+ |
| ECO B23 in 2003 play it! koch martin defeats white's koslowski volker in 59 moves | 1. e4 c5 2. Nc3 Nc6 3. g4 d6 4. d3 g6 5. Bg2 Bg7 6. Be3 e6 7. Qd2 a6 8. O-O-O b5 9. f4 Nge7 10. Nce2 Bb7 11. Nf3 b4 12. Kb1 h5 13. h3 a5 14. d4 c4 15. d5 exd5 16. exd5 c3 17. bxc3 bxc3 18. Nxc3 Nb4 19. Bd4 Bxd4 20. Nxd4 Rb8 21. Ncb5 Ba6 22. c4 Qb6 23. Rhe1 Kf8 24. a3 Bxb5 25. Nxb5 Na6 26. Qc3 Rh7 27. Ka1 hxg4 28. hxg4 Rh2 29. Rd2 Nc5 30. Rde2 |
| ECO B41 in 2007 play it! koch martin defeats white's sciarretta domin in 80 moves | 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Be3 Be7 7. Be2 O-O 8. O-O a6 9. Kh1 Nc6 10. f4 Nxd4 11. Bxd4 b5 12. Bf3 Bb7 13. a3 Qc7 14. Qe2 e5 15. Be3 Rac8 16. g4 d5 17. exd5 exf4 18. Bd4 Rfe8 19. Qg2 Nd7 20. Rad1 Bd6 21. Be4 Ne5 22. Bxe5 Rxe5 23. Rxf4 Qe7 24. Rdf1 f6 25. Rf5 Bxa3 26. Rxe5 Qxe5 27. Nxb5 axb5 28. bxa3 Rc4 29. Bf3 Rf4 30. Kg1 Qe3+ 31. Rf2 Qxa3 32. Qf1 Qe3 33. Qe2 Qxe2 34. Bxe2 Rd4 35. h3 b4 36. Rf5 Rd2 37. Bd3 b3 38. Rf2 Rd1+ 39. Rf1 Rxf1+ 40. Kxf1 Ba6 |
| ECO B46 in 2002 play it! koch martin defeats white's umbacher frank in 62 moves | 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nc3 a6 6. Be2 Qc7 7. O-O Nf6 8. Be3 Be7 9. f4 d6 10. Kh1 Bd7 11. Qe1 Nxd4 12. Bxd4 Bc6 13. Bd3 b5 14. e5 dxe5 15. fxe5 Nd5 16. Nxd5 Bxd5 17. Be4 Rd8 18. c3 O-O 19. Bxd5 Rxd5 20. Qe4 Bc5 21. Rac1 Rfd8 22. Qf3 Bxd4 23. cxd4 Qa7 24. Rc6 h6 25. Rc2 Rxd4 26. Rcf2 Rd2 27. g3 Rxf2 28. Qxf2 Qxf2 29. Rxf2 Rd1+ 30. Kg2 Re1 31. Kf3 Rxe5 |
| ECO B92 in 2003 play it! koch martin defeats white's blais arnaud in 40 moves | 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be2 e6 7. O-O Be7 8. Bg5 O-O 9. Bf3 Qc7 10. Re1 Nbd7 11. Nde2 Ne5 12. Ng3 h6 13. Bc1 Nxf3+ 14. Qxf3 Bd7 15. Qe2 Bc6 16. Nh5 b5 17. Nxf6+ Bxf6 18. Qg4 Kh8 19. Re3 b4 20. Rh3 bxc3 |
| ECO B50 in 2003 play it! koch martin defeats white's brunner hermann in 50 moves | 1. e4 c5 2. Nf3 d6 3. Bc4 e6 4. Nc3 Nc6 5. d4 cxd4 6. Nxd4 a6 7. a3 Qc7 8. O-O Nf6 9. Nxc6 Qxc6 10. Bd3 Be7 11. Be3 O-O 12. f4 d5 13. Qf3 dxe4 14. Nxe4 Rd8 15. Rad1 Nd5 16. Bc1 f5 17. Ng5 h6 18. Nh3 Bc5+ 19. Kh1 b5 20. b3 Bb7 21. c4 Nc3 22. Qxc6 Bxc6 23. Rde1 Rxd3 24. Rxe6 Bd7 25. Ree1 Rxh3 |
| ECO B20 in 2002 play it! koch martin defeats white's kapfenstein armi in 52 moves | 1. e4 c5 2. d4 cxd4 3. Qxd4 Nc6 4. Qd3 d6 5. Be3 Nf6 6. Nc3 g6 7. Nf3 Bg7 8. h3 a6 9. O-O-O Qc7 10. a3 h6 11. Be2 b5 12. b4 Be6 13. Qd2 Rc8 14. Nd5 Bxd5 15. exd5 Nxd5 16. Bd3 Nc3 17. Rdf1 a5 18. Bxb5 Nxb5 19. Qd3 Qb7 20. Bd2 axb4 21. axb4 Ra8 22. Kd1 Ra1+ 23. Ke2 Nbd4+ 24. Ke3 Ra3 25. c3 Nxb4 26. cxb4 Rxd3+ |
| ECO B22 in 2002 play it! koch martin defeats white's kleine joachim in 50 moves | 1. e4 c5 2. c3 e6 3. d4 Nc6 4. d5 Ne5 5. Nf3 Nxf3+ 6. Qxf3 e5 7. Nd2 Nf6 8. Nc4 d6 9. Bg5 Be7 10. h3 h6 11. Bxf6 Bxf6 12. Be2 a6 13. a3 b5 14. Ne3 Bg5 15. O-O Bxe3 16. fxe3 O-O 17. Rf2 Qg5 18. Raf1 Bd7 19. Kh2 a5 20. Qg3 Qxg3+ 21. Kxg3 f6 22. Bg4 Bxg4 23. Kxg4 Rfb8 24. Kf5 Kf7 25. b3 h5 |
| ECO B50 in 2006 play it! koch martin defeats white's vieth martin in 60 moves | 1. e4 c5 2. Nf3 d6 3. Bc4 Nf6 4. e5 dxe5 5. Nxe5 e6 6. O-O Bd6 7. Bb5+ Nbd7 8. Nxd7 Bxd7 9. Bxd7+ Qxd7 10. d3 O-O 11. Nc3 a6 12. Bg5 Be7 13. Ne4 Nxe4 14. Bxe7 Nxf2 15. Rxf2 Qxe7 16. Qf3 b5 17. Raf1 Rad8 18. Qc6 Qd6 19. Qxd6 Rxd6 20. a3 a5 21. Rf3 e5 22. c3 f6 23. b3 Rfd8 24. Re3 Rxd3 25. Rxd3 Rxd3 26. Rf3 e4 27. Rxd3 exd3 28. Kf1 c4 29. bxc4 bxc4 30. Ke1 Kf7 |
| ECO B44 in 2002 play it! koch martin defeats white's jelic milorad in 96 moves | 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nxc6 bxc6 6. Bd3 d5 7. O-O Nf6 8. exd5 cxd5 9. Nc3 Be7 10. Bf4 a6 11. Qf3 O-O 12. Be5 h6 13. Rfe1 Bb7 14. Bd4 Nd7 15. Re3 Bf6 16. Bxf6 Nxf6 17. Ree1 Bc6 18. Ne2 Qb6 19. Qg3 Bb5 20. b3 Rac8 21. Rac1 a5 22. c4 dxc4 23. bxc4 Bc6 24. h3 Rfd8 25. c5 Qb7 26. Red1 Rd5 27. Qe3 Rg5 28. g3 Bh1 29. c6 Bxc6 30. Nd4 Bd5 31. f4 Rh5 32. g4 Rh4 33. Rxc8+ Qxc8 34. Qg3 g5 35. fxg5 hxg5 36. Qe3 Nh7 37. Rc1 Qf8 38. a4 Qd6 39. Rc8+ Kg7 40. Ne2 Bb7 41. Rc4 Qd5 42. Re4 f5 43. Nc3 f4 44. Qe2 Qc5+ 45. Kh2 Nf6 46. Qb2 Nxg4+ 47. Kg2 Ne3+ 48. Kh2 Rxh3+ |