| ECO C52 in 1979 play it! knudsen john c defeats black's geib d in 44 moves | 1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. b4 Bxb4 5. c3 Ba5 6. d4 exd4 7. O-O d6 8. cxd4 Bg4 9. Qb3 Bxf3 10. Bxf7+ Kf8 11. Bxg8 Rxg8 12. Qxf3+ Qf6 13. Qxf6+ gxf6 14. Be3 Re8 15. f3 Bb6 16. Rd1 Kf7 17. Nc3 Ba5 18. Rac1 Bxc3 19. Rxc3 Re7 20. Rdc1 Rc8 21. a3 a6 22. Rb1 Rb8 |
| ECO C97 in 1979 play it! knudsen john c defeats black's myrick j in 49 moves | 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Re1 b5 7. Bb3 d6 8. c3 O-O 9. h3 Na5 10. Bc2 c5 11. d4 Qc7 12. Nbd2 Bd7 13. Nf1 Rfe8 14. Ne3 g6 15. dxe5 dxe5 16. Nh2 Be6 17. Qf3 Rad8 18. Neg4 Nxg4 19. hxg4 Qc6 20. g5 Nc4 21. Ng4 Bxg4 22. Qxg4 Nb6 23. g3 c4 24. Kg2 Nd7 25. Rh1 |
| ECO C21 in 1996 play it! knudsen john c defeats black's grimm horst in 59 moves | 1. e4 e5 2. d4 d6 3. Nf3 Bg4 4. dxe5 Nd7 5. exd6 Bxd6 6. Nc3 Ngf6 7. Be2 Qe7 8. O-O Nc5 9. e5 O-O-O 10. exd6 Rxd6 11. Qe1 Re6 12. Be3 Nfe4 13. Nd4 Bxe2 14. Ndxe2 Rd8 15. Rd1 Red6 16. Rxd6 Nxd6 17. Bxc5 Qg5 18. Be3 Qg6 19. Nf4 Qf5 20. Ncd5 Re8 21. Qc3 Nb5 22. Qc5 Qd7 23. c4 b6 24. Qxb5 c6 25. Qa6+ Kb8 26. Nc3 Re5 27. Rd1 Qc7 28. Nd3 Ra5 29. Qxa5 bxa5 30. Bf4 |
| ECO C40 in 1992 play it! knudsen john c defeats black's mulford m in 45 moves | 1. e4 e5 2. Nf3 f5 3. Nxe5 Qf6 4. d4 d6 5. Nc4 fxe4 6. Nc3 Qg6 7. f3 exf3 8. Qxf3 Nc6 9. Bd3 Qg4 10. Qf2 Qxd4 11. Be3 Qf6 12. Qe2 Be6 13. Ne4 Qh4+ 14. Bf2 Qg4 15. Qe3 Kd7 16. O-O Re8 17. Rae1 Be7 18. h3 Qh5 19. g4 Qf7 20. Bg3 Bf6 21. Ng5 Qe7 22. Nxe6 Qxe6 23. Qxe6+ |
| ECO C65 in 1990 play it! knudsen john c defeats black's maurer p in 35 moves | 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. O-O a6 5. Ba4 d6 6. Qe2 Bd7 7. c3 Be7 8. Re1 O-O 9. h3 Nb4 10. Bb3 Ba4 11. Bxa4 Nc6 12. d3 b5 13. Bc2 Qd7 14. Nbd2 Nd8 15. Nf1 Nh5 16. Nxe5 dxe5 17. Qxh5 Ne6 18. Ng3 |
| ECO C30 in 1980 play it! knudsen john c defeats black's wright j in 25 moves | 1. e4 e5 2. f4 f5 3. exf5 exf4 4. Nf3 Nf6 5. d4 d5 6. Bd3 Bd6 7. O-O O-O 8. Ne5 Ne4 9. Bxe4 Bxe5 10. Bxf4 Bxf5 11. Bxf5 Bxf4 12. Rxf4 Qg5 13. Be6+ |
| ECO C91 in 1981 play it! knudsen john c defeats black's smith j in 29 moves | 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Re1 b5 7. Bb3 d6 8. c3 O-O 9. d4 Bg4 10. d5 Na5 11. Bc2 c6 12. h3 Bxf3 13. Qxf3 c5 14. Nd2 c4 15. Nf1 |
| ECO C70 in 1991 play it! knudsen john c defeats black's kratzer w in 50 moves | 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 f5 5. Nc3 Nf6 6. d3 Bb4 7. O-O Bxc3 8. bxc3 fxe4 9. dxe4 Nxe4 10. Qe1 d5 11. Nxe5 Qf6 12. Nxc6 O-O 13. Nb4 Be6 14. Bb3 Rad8 15. Bb2 Ng5 16. f4 Nf7 17. f5 Bxf5 18. Bxd5 Qb6+ 19. Qf2 c5 20. Qxf5 cxb4+ 21. Kh1 Qd6 22. Bxf7+ Kh8 23. c4 Rd7 24. Qd5 Qxd5 25. Bxd5 Re8 |
| ECO C21 in 1996 play it! knudsen john c defeats black's stalker by checkmate in 99 moves | 1. e4 e5 2. d4 exd4 3. c3 dxc3 4. Bc4 cxb2 5. Bxb2 d5 6. Bxd5 Bb4+ 7. Nd2 Bxd2+ 8. Qxd2 Nf6 9. Qg5 Nxd5 10. Qxg7 Rf8 11. exd5 Qxd5 12. Ne2 c5 13. O-O Be6 14. Rad1 Qf5 15. Ng3 Qc2 16. Bf6 Nd7 17. Rfe1 Nxf6 18. Qxf6 Qg6 19. Qe5 Rg8 20. Qc7 Kf8 21. Qxb7 Kg7 22. Rd6 Rgb8 23. Qe7 Kh8 24. h4 Rb2 25. h5 Qg7 26. h6 Qxh6 27. Nf5 Qf8 28. Qf6+ Kg8 29. Nh6+ Qxh6 30. Qxh6 Rab8 31. f4 R2b5 32. Qg5+ Kf8 33. f5 Bxf5 34. Qxf5 c4 35. Qxh7 Rg5 36. Qh6+ Rg7 37. Re3 Kg8 38. Rh3 Kf8 39. Rg3 Rb1+ 40. Kh2 Rh1+ 41. Kxh1 c3 42. Qxg7+ Ke7 43. Rc6 Kd7 44. Rcxc3 Kd6 45. Rgd3+ Ke6 46. Qh6+ f6 47. Rc6+ Ke5 48. Qxf6+ Ke4 49. Rd1 Ke3 50. Re6# |
| ECO C51 in 1979 play it! knudsen john c defeats black's washington k by checkmate in 57 moves | 1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. b4 Bb6 5. a4 a6 6. O-O d6 7. d3 h6 8. c3 Nf6 9. Qb3 O-O 10. Ba3 a5 11. Nbd2 Bg4 12. b5 Ne7 13. Rae1 Nd7 14. d4 Bxf3 15. Nxf3 Ng6 16. Bd5 Rb8 17. dxe5 Ndxe5 18. Nxe5 Nxe5 19. Qd1 Qh4 20. h3 g5 21. c4 g4 22. Bb2 g3 23. Kh1 gxf2 24. Re2 Ng4 25. Rexf2 Nxf2+ 26. Rxf2 Bxf2 27. Qf3 Bg3 28. Qf5 Qf4 29. Qg6# |
| ECO C44 in 1981 play it! knudsen john c defeats black's mack t in 85 moves | 1. e4 e5 2. Nf3 Nc6 3. d4 Bd6 4. d5 Nce7 5. c4 c6 6. Nc3 a6 7. Be3 Qa5 8. Bd3 f6 9. O-O b5 10. c5 Bb8 11. d6 Ng6 12. a3 Ba7 13. b4 Qd8 14. Qd2 a5 15. Rfd1 axb4 16. axb4 Bb7 17. Bxb5 cxb5 18. Nxb5 Bb8 19. Rxa8 Bxa8 20. Nc3 Qc8 21. b5 Ba7 22. b6 Bb8 23. Nd5 N6e7 24. dxe7 Nxe7 25. Nxe7 Kxe7 26. Qb4 Bc6 27. Nd2 Rd8 28. Nb3 d5 29. cxd6+ Bxd6 30. Rxd6 Rxd6 31. Bc5 Qb8 32. Na5 Kd7 33. Bxd6 Qxd6 34. Qxd6+ Kxd6 35. f3 Kd7 36. Kf2 Kd6 37. Ke3 Kc5 38. b7 Bxb7 39. Nxb7+ Kb4 40. Nd6 g6 41. f4 Kc5 42. fxe5 fxe5 43. Nf7 |
| ECO C40 in 1993 play it! knudsen john c defeats black's rydel l in 59 moves | 1. e4 e5 2. Nf3 d5 3. exd5 Bd6 4. Qe2 Nd7 5. d4 Qe7 6. dxe5 Nxe5 7. Nxe5 Bxe5 8. f4 Bd6 9. c4 Bg4 10. Qxe7+ Nxe7 11. Be2 Bxe2 12. Kxe2 O-O 13. Nc3 Rfe8 14. Kf3 Nf5 15. g3 Nd4+ 16. Kf2 Nc2 17. Rb1 Bc5+ 18. Kg2 Ne1+ 19. Kh3 Nd3 20. Rf1 Rad8 21. Bd2 Nf2+ 22. Kg2 Ne4 23. Rbd1 Nxc3 24. Bxc3 Re2+ 25. Kf3 Rxh2 26. b4 Rc2 27. Rd3 Be7 28. Rf2 Rc1 29. c5 f5 30. Re2 |
| ECO C43 in 1981 play it! knudsen john c defeats black's mullins t in 53 moves | 1. e4 e5 2. Nf3 Nf6 3. d4 exd4 4. e5 Bb4+ 5. c3 dxc3 6. bxc3 Qe7 7. cxb4 Qxb4+ 8. Bd2 Qe7 9. Be2 Ng4 10. O-O Nxe5 11. Nc3 c6 12. Re1 O-O 13. Bf4 d5 14. Bxe5 Nd7 15. Bg3 Nc5 16. Bd3 Be6 17. Bh4 f6 18. Nd4 g5 19. Nxe6 Nxe6 20. Qg4 Rae8 21. Bf5 Qb4 22. Qxb4 Ng7 23. Rxe8 Rxe8 24. Qg4 gxh4 25. Kf1 Re5 26. Bc2 b5 27. Re1 |
| ECO C42 in 1981 play it! knudsen john c defeats black's schoonacker i by checkmate in 101 moves | 1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. d4 d5 6. Bd3 Bd6 7. O-O O-O 8. Re1 f5 9. c4 c6 10. Nc3 Nxc3 11. bxc3 Nd7 12. Bg5 Nf6 13. c5 Bb8 14. Qc2 h6 15. Bxf6 Qxf6 16. Re2 f4 17. h3 Bc7 18. Rae1 Bd7 19. Re7 Rf7 20. Qe2 Raf8 21. Rxf7 Rxf7 22. Ne5 Bxe5 23. dxe5 Qe6 24. f3 Re7 25. c4 g5 26. cxd5 cxd5 27. Qb2 Qc6 28. Qd4 Be6 29. Bc2 Qa6 30. Bb3 Qa5 31. Rd1 Rd7 32. Qd3 Qxc5+ 33. Kh1 b6 34. Qg6+ Kf8 35. Qxe6 Re7 36. Qxd5 Qxd5 37. Rxd5 Kg7 38. Kg1 Kg6 39. Kf2 Kh5 40. e6 Kh4 41. Re5 a6 42. Rf5 h5 43. Rf7 Re8 44. Rb7 g4 45. hxg4 hxg4 46. Rxb6 Rd8 47. e7 Rd2+ 48. Ke1 Rxg2 49. e8=Q gxf3 50. Rh6+ Kg3 51. Qg6# |
| ECO C25 in 1981 play it! knudsen john c defeats black's dewitt g in 49 moves | 1. e4 e5 2. Nc3 Nc6 3. Bc4 Nf6 4. d3 Bb4 5. f4 d6 6. Nf3 Nd4 7. a3 Nxf3+ 8. Qxf3 Bg4 9. Qg3 Bxc3+ 10. bxc3 Rg8 11. fxe5 dxe5 12. Qxe5+ Qe7 13. Qxe7+ Kxe7 14. O-O Raf8 15. a4 Kd7 16. e5 Nh5 17. Ba3 Rc8 18. Rxf7+ Kc6 19. d4 b6 20. d5+ Kb7 21. d6 Rge8 22. Bd5+ Kb8 23. dxc7+ Rxc7 24. Bd6 Rc8 25. a5 |
| ECO C95 in 1981 play it! knudsen john c defeats black's capritta a in 79 moves | 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Re1 b5 7. Bb3 d6 8. c3 O-O 9. h3 Nb8 10. d4 Nbd7 11. c4 c6 12. c5 Qc7 13. cxd6 Bxd6 14. Bg5 exd4 15. Bxf6 gxf6 16. Qxd4 Ne5 17. Nbd2 Kh8 18. Qe3 Rg8 19. Kh1 Ng6 20. Nf1 Nf4 21. Nh4 c5 22. Bd5 Nxd5 23. exd5 Bb7 24. Rad1 Rae8 25. Qxe8 Rxe8 26. Rxe8+ Kg7 27. Nf5+ Kg6 28. N1e3 h5 29. Rh8 Bf4 30. d6 Qd7 31. Ne7+ Kg7 32. Rg8+ Kh7 33. N3f5 Bh6 34. f3 a5 35. h4 c4 36. Rd4 Ba6 37. Nxh6 Kxh6 38. Rd5 f5 39. Nxf5+ Kh7 40. Ne7 |
| ECO C57 in 1979 play it! knudsen john c defeats black's gorman f in 51 moves | 1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. Ng5 d5 5. exd5 Nxd5 6. Nxf7 Kxf7 7. Qf3+ Ke8 8. Bxd5 Ne7 9. Nc3 c6 10. Bf7+ Kd7 11. d4 Kc7 12. dxe5 g6 13. Bf4 Nf5 14. e6+ Bd6 15. Rd1 Qe7 16. O-O Bxe6 17. Bxe6 Qxe6 18. Rfe1 Qd7 19. Ne4 Rad8 20. Nxd6 Nxd6 21. Bxd6+ Kc8 22. Re7 Qxd6 23. Rxd6 Rxd6 24. h4 Rhd8 25. Qf7 R8d7 26. Qxh7 |
| ECO C30 in 1981 play it! knudsen john c defeats black's mack t in 73 moves | 1. e4 e5 2. f4 d6 3. Nf3 Bg4 4. Bc4 Nc6 5. c3 Nf6 6. Qe2 Nh5 7. d3 exf4 8. O-O f6 9. Qc2 g5 10. d4 Bxf3 11. Rxf3 Qd7 12. Qf2 b6 13. Bd5 O-O-O 14. a4 Ne7 15. c4 Ng7 16. a5 Kb8 17. axb6 cxb6 18. Rfa3 Nc8 19. c5 dxc5 20. Nc3 cxd4 21. Na4 Bxa3 22. Rxa3 Ne6 23. b4 Qb5 24. Qa2 Nc7 25. Bc4 Qxb4 26. Bd2 Qe7 27. Bd3 h5 28. Qb2 h4 29. Ba5 Na8 30. Rb3 Qe6 31. Nc5 Qe7 32. Na6+ Kb7 33. Bb4 Qe5 34. Qa2 Nc7 35. Qa4 Nxa6 36. Bxa6+ Ka8 37. Qc6+ |
| ECO C50 in 1978 play it! knudsen john c defeats black's jordan r in 53 moves | 1. e4 e5 2. Nf3 Nc6 3. Bc4 h6 4. O-O Nf6 5. Nc3 Bb4 6. Re1 O-O 7. d4 exd4 8. Nxd4 Ne5 9. Bb3 d6 10. f4 Bxc3 11. bxc3 Neg4 12. h3 c5 13. Nf3 c4 14. Bxc4 Qb6+ 15. Nd4 Bd7 16. hxg4 Nxg4 17. Be3 Rae8 18. Rb1 Qd8 19. Bf2 b6 20. Qf3 Ba4 21. Qxg4 Bxc2 22. Nxc2 Qc8 23. Qxc8 Rxc8 24. Ne3 Rfe8 25. Rb4 Rxe4 26. Bxf7+ Kxf7 27. Rxe4 |
| ECO C42 in 2007 play it! knudsen john c defeats black's weimper arthur in 105 moves | 1. e4 e5 2. Nf3 Nf6 3. Nxe5 Nxe4 4. Qe2 d6 5. Nxf7 Kxf7 6. Qxe4 Qe7 7. Nc3 c6 8. Be2 Qxe4 9. Nxe4 Be7 10. O-O Rf8 11. d3 Kg8 12. Be3 d5 13. Ng3 c5 14. Bf3 Be6 15. Rfe1 Nc6 16. Bxc5 Bxc5 17. Rxe6 Nd4 18. Bxd5 Nxe6 19. Bxe6+ Kh8 20. Ne4 Bb6 21. Bd5 Rac8 22. c4 Bd4 23. Rb1 b6 24. b3 Rcd8 25. Rf1 h6 26. g3 Rf3 27. Nd6 Rxg3+ 28. hxg3 Rxd6 29. Kg2 b5 30. Re1 Rd8 31. Re7 bxc4 32. dxc4 Bc5 33. Rc7 Bb6 34. Rc6 Rf8 35. c5 Ba5 36. Ra6 Bb4 37. c6 Bc5 38. c7 Rc8 39. Rc6 Bb6 40. Kf3 Rxc7 41. Rxc7 Bxc7 42. Ke4 Bb6 43. f3 Kh7 44. Kf5 a5 45. Ke6 Bc5 46. Kf7 Bf2 47. g4 Bh4 48. a3 Be1 49. Be4+ Kh8 50. Ke6 a4 51. b4 Bxb4 52. axb4 a3 53. Bd5 |