| ECO D20 in 2001 play it! knudsen john c defeats black's payne kenton dal in 99 moves | 1. d4 d5 2. c4 dxc4 3. e4 Nf6 4. e5 Nd5 5. Bxc4 Nb6 6. Bb3 Nc6 7. Ne2 Bf5 8. Nbc3 e6 9. O-O Na5 10. Bc2 Bxc2 11. Qxc2 Qd7 12. Be3 Be7 13. Rad1 O-O 14. Nf4 c6 15. Nh5 Nd5 16. Qe2 f5 17. exf6 Nxf6 18. Nxf6+ Rxf6 19. Bg5 Rf5 20. Bxe7 Qxe7 21. a3 Nb3 22. Rfe1 Raf8 23. f3 c5 24. dxc5 Qxc5+ 25. Qf2 Rg5 26. Rxe6 Rxf3 27. Re8+ Kf7 28. Qxc5 Nxc5 29. Rc8 Rd3 30. Rxd3 Nxd3 31. Rc7+ Kg6 32. Rxb7 Rc5 33. Rxa7 Nxb2 34. Ne2 Nd3 35. Rd7 Ne5 36. Rd5 Rxd5 37. Nf4+ Kf5 38. Nxd5 Nc4 39. a4 Ke5 40. Nb4 Kd6 41. Kf2 Nb6 42. a5 Na8 43. Ke3 Kc5 44. Nc2 Nc7 45. Nd4 Kb4 46. a6 Nxa6 47. Ne6 Kc4 48. Ke4 g6 49. h4 h6 50. Ke5 |
| ECO D06 in 1983 play it! knudsen john c defeats black's hughes w in 77 moves | 1. d4 d5 2. c4 Bf5 3. Nc3 e6 4. Nf3 h6 5. e3 Bb4 6. a3 Bxc3+ 7. bxc3 Nf6 8. Be2 Ne4 9. Qb3 b5 10. cxb5 c5 11. O-O O-O 12. a4 Qa5 13. dxc5 Nxc5 14. Qb4 Qxb4 15. cxb4 Nb3 16. Ra3 Nxc1 17. Rxc1 Nd7 18. Rac3 Nb6 19. a5 Nc4 20. Bxc4 dxc4 21. Rxc4 Bd3 22. Rc5 f6 23. R1c3 Rfd8 24. h3 Rd7 25. Nd4 Be4 26. Nxe6 Kf7 27. Nd4 Rad8 28. Rc7 g5 29. f3 Bd5 30. Nc6 Bxc6 31. R3xc6 Ke7 32. b6 axb6 33. Rxd7+ Rxd7 34. Rxb6 h5 35. a6 Rd1+ 36. Kh2 f5 37. a7 Ra1 38. Rb7+ Kd6 39. b5 |
| ECO D17 in 2000 play it! knudsen john c defeats black's martins barriga in 67 moves | 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 dxc4 5. a4 Bf5 6. Ne5 e6 7. f3 Bb4 8. e4 Bg6 9. Bxc4 Nbd7 10. Nd3 Ba5 11. Be3 Bc7 12. Qe2 h6 13. O-O O-O 14. Rfd1 Qe7 15. b4 a6 16. Rac1 Rfd8 17. a5 Rac8 18. Na4 Ne8 19. Nac5 Nxc5 20. Nxc5 Rb8 21. e5 Kh7 22. Bf2 Rdc8 23. f4 Bd8 24. Rf1 b5 25. axb6 Rxb6 26. Nxa6 Ra8 27. Kh1 Nc7 28. Nxc7 Qxc7 29. d5 Rxb4 30. dxe6 fxe6 31. Bc5 Rba4 32. Bxe6 Re4 33. Qg4 h5 34. Qh3 |
| ECO D31 in 2007 play it! knudsen john c defeats black's konrad peter in 63 moves | 1. d4 d5 2. c4 e6 3. Nc3 c6 4. Nf3 Be7 5. e4 dxe4 6. Nxe4 Nf6 7. Bd3 Nbd7 8. O-O Nxe4 9. Bxe4 Nf6 10. Bc2 O-O 11. b3 b6 12. Bb2 c5 13. Qe2 Bb7 14. Rad1 Qc7 15. Rfe1 Rad8 16. d5 Bc8 17. Be5 Bd6 18. Bxf6 gxf6 19. Qe4 f5 20. Qh4 Qe7 21. Ng5 f6 22. Nxe6 Bxe6 23. Rxe6 Qg7 24. Bxf5 Kh8 25. Re4 Rf7 26. Rde1 Be5 27. Rxe5 Rg8 28. Qxh7+ Qxh7 29. Bxh7 Rxh7 30. Re7 Rhg7 31. g3 Rf8 32. d6 |
| ECO D20 in 1999 play it! knudsen john c defeats black's mrkvicka josef in 123 moves | 1. d4 d5 2. c4 dxc4 3. e4 b5 4. a4 Bb7 5. axb5 Bxe4 6. Nf3 e6 7. Bxc4 Nf6 8. O-O Nbd7 9. Nc3 Bb7 10. Bb3 h6 11. d5 e5 12. Re1 Bd6 13. Nxe5 Nxe5 14. f4 Nd7 15. fxe5 Nxe5 16. Bf4 Qe7 17. Qh5 g5 18. Bg3 Kd8 19. Ne4 f6 20. Rf1 Bc8 21. Nxf6 Nd3 22. Qf3 Nf4 23. Bxf4 gxf4 24. Ne4 Bg4 25. Qxg4 Qxe4 26. Rfe1 Qb4 27. Ba4 f3 28. Qxf3 Qf4 29. Qxf4 Bxf4 30. Re6 Rb8 31. g3 Bd6 32. Rf1 h5 33. Re4 Rb6 34. Kg2 h4 35. Rf7 hxg3 36. hxg3 Rg8 37. g4 Rg5 38. Rf5 Be7 39. Kf3 Rxf5+ 40. gxf5 Rf6 41. Kf4 Rd6 42. Bb3 Rh6 43. Bd1 Rh2 44. Be2 Rh4+ 45. Bg4 Rh2 46. Ke5 Rh6 47. Ra4 Rb6 48. Be2 Bf6+ 49. Ke4 Bxb2 50. Rxa7 Rh6 51. Kf4 Rd6 52. Ra2 Bf6 53. Bf3 Rb6 54. Ra6 Ke7 55. Rxb6 cxb6 56. Kg4 Kf7 57. d6 Be5 58. d7 Bc7 59. Bd5+ Ke7 60. Be6 Kf6 61. Kh5 Kg7 62. Kg5 |
| ECO D11 in 1995 play it! knudsen john c defeats black's schwab by checkmate in 75 moves | 1. d4 d5 2. c4 c6 3. Nf3 Bg4 4. Ne5 Nf6 5. Qb3 Qb6 6. Qxb6 axb6 7. Nxg4 Nxg4 8. e3 Nf6 9. Nc3 e6 10. Bd3 Bb4 11. Bd2 O-O 12. O-O Re8 13. a3 Bxc3 14. Bxc3 dxc4 15. Bxc4 b5 16. Bd3 Nd5 17. Bd2 e5 18. e4 Nf4 19. Bxf4 exf4 20. Rfd1 Rd8 21. Be2 Nd7 22. f3 c5 23. Bxb5 cxd4 24. Rxd4 Nf6 25. Rad1 Rxd4 26. Rxd4 g6 27. e5 Nh5 28. Rd7 f6 29. e6 Ng7 30. e7 Ne8 31. Bc4+ Kg7 32. Rd8 Nc7 33. Rxa8 Nxa8 34. e8=Q Nb6 35. Bg8 Na8 36. h4 Nc7 37. Qf7+ Kh6 38. Qxh7# |
| ECO D06 in 1992 play it! knudsen john c defeats black's bowen a in 75 moves | 1. d4 d5 2. c4 g6 3. Nc3 Nf6 4. cxd5 Nxd5 5. e4 Nf6 6. Nf3 Bg7 7. h3 b6 8. Bc4 Bb7 9. Qe2 O-O 10. O-O Nc6 11. Rd1 Na5 12. Bd3 Nd7 13. Be3 c5 14. Rac1 Nc6 15. d5 Nce5 16. Nxe5 Nxe5 17. Bb1 a5 18. f4 Ba6 19. Nb5 c4 20. a4 Nd3 21. Bxd3 cxd3 22. Rxd3 Rb8 23. Rc6 Re8 24. Qf2 Bxb5 25. axb5 Qd7 26. e5 e6 27. Bxb6 exd5 28. Qc5 Rec8 29. Rxd5 Qf5 30. Bxa5 Qb1+ 31. Kh2 Qf5 32. Rxc8+ Rxc8 33. Qxc8+ Qxc8 34. Rd8+ Qxd8 35. Bxd8 Bf8 36. b6 Bc5 37. b7 Ba7 38. Bc7 |
| ECO D10 in 1972 play it! knudsen john c defeats black's johnson in 83 moves | 1. d4 d5 2. c4 c6 3. Nc3 Nf6 4. Bg5 Nbd7 5. Nf3 e6 6. e4 Bb4 7. e5 h6 8. Bh4 g5 9. Bxg5 hxg5 10. exf6 Nxf6 11. Nxg5 dxc4 12. Bxc4 b5 13. Be2 Rg8 14. Nh3 Rxg2 15. Bf3 Rg6 16. Bxc6+ Bd7 17. Bxa8 Qxa8 18. Rg1 Rxg1+ 19. Nxg1 Bxc3+ 20. bxc3 Nd5 21. Qh5 Qd8 22. Ne2 b4 23. Qh8+ Ke7 24. Qxd8+ Kxd8 25. Rc1 f6 26. c4 Nc3 27. Nxc3 bxc3 28. Rxc3 e5 29. dxe5 fxe5 30. c5 Kc7 31. h4 Be8 32. Re3 Bf7 33. Rxe5 Bxa2 34. h5 Bg8 35. h6 a5 36. Re7+ Kc6 37. h7 Bxh7 38. Rxh7 Kxc5 39. f4 a4 40. Ra7 Kd4 41. Rxa4+ Ke3 42. f5 |
| ECO D52 in 1986 play it! knudsen john c defeats black's brooke r in 55 moves | 1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bg5 Nbd7 5. e3 c6 6. Nf3 Qa5 7. Nd2 Bb4 8. Qc2 dxc4 9. Bxf6 Nxf6 10. Nxc4 Bxc3+ 11. bxc3 Qc7 12. Bd3 Nd7 13. O-O c5 14. Qe2 b5 15. Nd2 c4 16. Bc2 Qa5 17. Ne4 Nb6 18. Qh5 Nd5 19. Nd6+ Ke7 20. Nxf7 Nf6 21. Qf3 Ba6 22. Nxh8 Rxh8 23. e4 Rf8 24. Qe3 Qc7 25. f3 Qb6 26. Rfe1 Bb7 27. Rad1 Qc7 28. d5 |
| ECO D06 in 1989 play it! knudsen john c defeats black's mitchell v in 73 moves | 1. d4 d5 2. c4 c5 3. cxd5 Qxd5 4. Nf3 Nc6 5. Nc3 Qd8 6. d5 Nb4 7. a3 Qa5 8. Bd2 Na6 9. e4 Bg4 10. Bb5+ Bd7 11. Bxd7+ Kxd7 12. Ne5+ Ke8 13. O-O Qc7 14. Nc4 Nf6 15. Re1 h5 16. e5 Ng4 17. f3 Nxh2 18. Kxh2 e6 19. d6 Qd8 20. Qa4+ Qd7 21. Qxd7+ Kxd7 22. Rad1 b6 23. Bg5 g6 24. Ne4 Bg7 25. Bf6 Rag8 26. Bxg7 Rxg7 27. Nf6+ Kd8 28. d7 Nb8 29. Nd6 Nxd7 30. Nxd7 f5 31. Nf6 Rf8 32. Nxf5+ Kc7 33. Nxg7 Kb7 34. Nxe6 Rc8 35. Nd8+ Ka6 36. e6 Rc7 37. e7 |
| ECO D60 in 1985 play it! knudsen john c defeats black's troester p in 53 moves | 1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bg5 Be7 5. e3 O-O 6. Nf3 Nbd7 7. Bd3 dxc4 8. Bxc4 c5 9. O-O a6 10. Rc1 Nb6 11. Bd3 c4 12. Bb1 Bd7 13. Ne5 Qc7 14. f4 Nbd5 15. Qf3 Nxc3 16. bxc3 Ba4 17. Qh3 h6 18. Rf3 hxg5 19. fxg5 Rfc8 20. gxf6 Bxf6 21. Ng4 Bd8 22. Rcf1 f5 23. Rxf5 exf5 24. Bxf5 Bf6 25. Be6+ Kf8 26. Nxf6 gxf6 27. Qh8+ |
| ECO D08 in 1989 play it! knudsen john c defeats black's costigan m in 37 moves | 1. d4 d5 2. c4 e5 3. dxe5 d4 4. Nf3 Nc6 5. a3 Bg4 6. Bf4 Qd7 7. Nbd2 O-O-O 8. b4 Re8 9. Qb3 Nge7 10. h3 Bxf3 11. Nxf3 Ng6 12. Bh2 Ngxe5 13. Nxe5 Nxe5 14. O-O-O c5 15. e3 Nc6 16. b5 Na5 17. Qa4 b6 18. Be2 Qf5 19. Bg4 |
| ECO D17 in 1983 play it! knudsen john c defeats black's bell p in 61 moves | 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 dxc4 5. a4 Bf5 6. Ne5 e6 7. Nxc4 Qc7 8. f3 Nbd7 9. e4 Bg6 10. Bd3 Be7 11. Be3 O-O 12. O-O Rfd8 13. Qe2 Ne8 14. f4 f5 15. Rac1 a6 16. a5 Nd6 17. Bd2 Nxc4 18. Bxc4 Nf8 19. exf5 Bxf5 20. g4 Bg6 21. f5 Rxd4 22. fxg6 Nxg6 23. Qxe6+ Kh8 24. Be3 Rd6 25. Qe4 Rf6 26. Bd4 Qxa5 27. Bxf6 Bxf6 28. Rf3 Qb6+ 29. Kh1 Qxb2 30. Re1 b5 31. Bxb5 |
| ECO D32 in 2007 play it! knudsen john c defeats black's erkel al in 63 moves | 1. d4 d5 2. c4 e6 3. Nc3 c5 4. Nf3 Nf6 5. cxd5 Nxd5 6. e4 Nxc3 7. bxc3 cxd4 8. cxd4 Bb4+ 9. Bd2 Bxd2+ 10. Qxd2 O-O 11. Bc4 Nc6 12. O-O b6 13. Rad1 Bb7 14. Rfe1 Rc8 15. d5 exd5 16. Bxd5 Qc7 17. Qg5 h6 18. Qh5 Nb4 19. Bb3 Nc6 20. Nh4 Na5 21. Nf5 Nxb3 22. axb3 Kh7 23. Rd6 f6 24. Nxh6 Rce8 25. Rxf6 Rxf6 26. Ng4+ Rh6 27. Qxe8 Qc3 28. Rf1 Rg6 29. Ne5 Rg5 30. Nf7 Rc5 31. h4 Bc6 32. Qh8+ |
| ECO D06 in 2000 play it! knudsen john c defeats black's dearnley andrew in 125 moves | 1. d4 d5 2. c4 Bf5 3. cxd5 Bxb1 4. Rxb1 Qxd5 5. a3 Nc6 6. Nf3 O-O-O 7. Qc2 Nxd4 8. Nxd4 Qxd4 9. g3 e6 10. Bg2 Qc5 11. Qa4 Qd4 12. b4 Qd7 13. Qc2 Nf6 14. O-O Kb8 15. Be3 h5 16. Rfd1 Bd6 17. b5 Nd5 18. Bd4 f5 19. e4 fxe4 20. Qxe4 h4 21. a4 hxg3 22. hxg3 Qf7 23. a5 Rh5 24. a6 b6 25. Qc2 Qd7 26. Qg6 Rh6 27. Qxg7 Qxg7 28. Bxg7 Rg6 29. Ba1 c6 30. bxc6 Kc7 31. Bf1 Kxc6 32. Bb5+ Kc7 33. Rbc1+ Bc5 34. Be5+ Kc8 35. Rxc5+ bxc5 36. Rc1 Rdg8 37. Rxc5+ Kd8 38. Bd3 Rg4 39. Rb5 Nb6 40. Bb8 R8g7 41. Rh5 Nd5 42. Rh8+ Rg8 43. Rxg8+ Rxg8 44. Bxa7 Kc7 45. Bd4 Kd6 46. Be4 e5 47. Bxd5 Kxd5 48. Be3 Ke4 49. Kg2 Rf8 50. a7 Rg8 51. Kh3 Rh8+ 52. Kg4 Rg8+ 53. Kh5 Kd5 54. g4 Ke6 55. g5 Kf7 56. g6+ Kf6 57. Bg5+ Kg7 58. Bh6+ Kf6 59. g7 Re8 60. Kg4 Ra8 61. Be3 Rg8 62. Kf3 Kxg7 63. Ke4 |
| ECO D19 in 1990 play it! knudsen john c defeats black's hernandez h in 53 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 Bg4 11. Bg5 h6 12. Bh4 Qb6 13. Rfd1 c5 14. e5 Nh7 15. a5 Bxa5 16. d5 Bxc3 17. bxc3 Qc7 18. d6 Qc8 19. Be7 Re8 20. Qe3 Nhf8 21. Bxf8 Rxf8 22. Be2 a6 23. Ra4 Bf5 24. Rh4 Qe8 25. Bd3 Bxd3 26. Qxd3 Nxe5 27. Nxe5 |
| ECO D54 in 1982 play it! knudsen john c defeats black's vrede e in 89 moves | 1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bg5 Be7 5. e3 c6 6. Nf3 dxc4 7. Bxc4 b5 8. Bd3 Nbd7 9. O-O Bb7 10. Rc1 a6 11. Ne5 Nxe5 12. dxe5 Nd5 13. Bxe7 Qxe7 14. Ne4 O-O 15. Nc5 Rfd8 16. a3 f5 17. exf6 Nxf6 18. Qc2 Rac8 19. Rfd1 Rd5 20. e4 Rh5 21. b4 Kh8 22. Be2 Rh6 23. Rd2 Qc7 24. h3 Qe7 25. Rcd1 Ba8 26. Rd6 Nh5 27. Qd2 Rf8 28. Bxh5 Rxh5 29. Rd8 Kg8 30. Rxf8+ Qxf8 31. Qd8 Qxd8 32. Rxd8+ Kf7 33. Rxa8 e5 34. Rxa6 Rh6 35. Ra7+ Kg8 36. Kf1 Rd6 37. Ke2 h6 38. f4 exf4 39. e5 Rg6 40. Kf3 Rg3+ 41. Kxf4 Rxg2 42. e6 Rg1 43. Ra8+ Kh7 44. e7 Rf1+ 45. Kg3 |
| ECO D10 in 1999 play it! knudsen john c defeats black's horacek don in 33 moves | 1. d4 d5 2. c4 c6 3. Nc3 Nf6 4. e3 g6 5. Nf3 Bg7 6. Be2 O-O 7. O-O Be6 8. b3 c5 9. Bb2 Nc6 10. dxc5 dxc4 11. bxc4 Nd7 12. Qc1 Nxc5 13. Rd1 Qa5 14. Nd5 Na4 15. Bxg7 Kxg7 16. Rb1 Nc5 17. Rb5 |
| ECO D06 in 1982 play it! knudsen john c defeats black's hicks in 65 moves | 1. d4 d5 2. c4 Nf6 3. cxd5 Nxd5 4. e4 Nb6 5. Nf3 Bg4 6. Be2 e6 7. O-O Be7 8. Nc3 Nc6 9. Be3 O-O 10. a3 Bxf3 11. Bxf3 Nc4 12. Qe2 Nxe3 13. fxe3 Bf6 14. e5 Bg5 15. Ne4 Qe7 16. Nxg5 Qxg5 17. Rac1 Rab8 18. Bxc6 bxc6 19. Rxc6 Qe7 20. Rfc1 Rfc8 21. b4 Qd7 22. Qc4 Rb7 23. e4 f6 24. Rxe6 Qf7 25. exf6 gxf6 26. Rxf6 Qxc4 27. Rxc4 Rf8 28. Rxf8+ Kxf8 29. Rc6 Ke7 30. Kf2 h5 31. Kf3 Kd7 32. Rh6 Rb8 33. Rxh5 |
| ECO D51 in 2007 play it! knudsen john c defeats black's plueckfelder leo in 93 moves | 1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bg5 Nbd7 5. e3 Be7 6. Nf3 h6 7. Bh4 dxc4 8. Bxc4 c6 9. O-O Nd5 10. Bg3 N7f6 11. Qc2 Nb4 12. Qe2 b5 13. Bb3 a5 14. a3 Nbd5 15. e4 Nxc3 16. bxc3 a4 17. Bc2 Ba6 18. Bd3 Qa5 19. Rfc1 O-O 20. Ne5 Rfc8 21. Ng4 c5 22. Nxf6+ Bxf6 23. e5 c4 24. Be4 Be7 25. Bxa8 Rxa8 26. Qe4 Rb8 27. f4 Bb7 28. Qe3 Qa8 29. Rc2 Be4 30. Re2 Bf5 31. Rd2 Rd8 32. h3 Rd5 33. Kh2 Qf8 34. Rda2 f6 35. Bh4 g5 36. exf6 Bd6 37. Bg3 Qxf6 38. fxg5 Bxg3+ 39. Qxg3 hxg5 40. Rf1 Qe7 41. Qe3 Bd3 42. Rff2 e5 43. dxe5 Rxe5 44. Qb6 g4 45. Qf6 Qc7 46. Qf8+ Kh7 47. Rf7+ |