| ECO B41 in 1962 play it! krogius nikolai defeats black's korelov alexande in 101 moves | 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Bb4 6. e5 Ne4 7. Qg4 Qa5 8. Qxe4 Bxc3+ 9. bxc3 Qxc3+ 10. Kd1 Qxa1 11. Nb5 Nc6 12. Nc7+ Kd8 13. Nxa8 Qxe5 14. Qxe5 Nxe5 15. Ba3 d5 16. Bd6 Ng4 17. Ke1 Bd7 18. Nc7 a6 19. Na8 Ba4 20. Nb6 Bxc2 21. f3 Nf6 22. Kd2 Bf5 23. Be2 Nd7 24. Rc1 Nxb6 25. Bc7+ Kd7 26. Bxb6 Rc8 27. Rxc8 Kxc8 28. Kc3 Kd7 29. f4 Be4 30. g4 f6 31. Kd4 Kc6 32. Ba5 g5 33. Bd8 gxf4 34. Bxf6 f3 35. Bf1 a5 36. a3 b5 37. Be7 Bc2 38. Ke3 Bd1 39. Bd3 e5 40. Bxh7 d4+ 41. Kf2 Kd5 42. Bg8+ Kc6 43. Bf6 Kd6 44. h4 b4 45. axb4 axb4 46. h5 d3 47. h6 d2 48. Bxe5+ Kc5 49. Bf4 b3 50. Bxd2 b2 51. Bh7 |
| ECO B75 in 1955 play it! krogius nikolai defeats black's geller efim p in 79 moves | 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Bg7 7. f3 Nc6 8. Qd2 O-O 9. O-O-O Nxd4 10. Bxd4 Qa5 11. Bc4 Be6 12. Bb3 Rfc8 13. Kb1 b5 14. g4 b4 15. Ne2 Qb5 16. h4 a5 17. g5 Nd7 18. Bxe6 fxe6 19. Bxg7 Kxg7 20. Nd4 Qc4 21. b3 Qc3 22. Nxe6+ Kf7 23. Nd4 a4 24. h5 axb3 25. cxb3 Qxd2 26. Rxd2 Nf8 27. hxg6+ hxg6 28. f4 Rc5 29. Nc2 Rb8 30. Kb2 Rb7 31. Ne3 Rc3 32. Nd5 Rf3 33. Rhh2 Ne6 34. Rh7+ Kf8 35. Rh8+ Kf7 36. Rh7+ Kf8 37. e5 dxe5 38. Rc2 Ke8 39. Nf6+ Kd8 40. Rh8+ |
| ECO B94 in 1953 play it! krogius nikolai defeats black's borisenko georgy in 39 moves | 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 Nbd7 7. Qf3 Qa5 8. Bd2 Qc7 9. O-O-O g6 10. h4 Bg7 11. h5 Nxh5 12. Nd5 Qd8 13. Nf5 gxf5 14. Rxh5 fxe4 15. Qxe4 Nc5 16. Qh4 Be6 17. Ba5 b6 18. Bxb6 Bxb2+ 19. Kb1 Rb8 20. Bb5+ |
| ECO B34 in 1956 play it! krogius nikolai defeats black's buslaev aleksand in 49 moves | 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. Nc3 Bg7 6. Be3 Nf6 7. Nxc6 bxc6 8. e5 Ng8 9. Bd4 f6 10. f4 d5 11. exd6 exd6 12. Qf3 Ne7 13. O-O-O O-O 14. Bc5 d5 15. Bc4 Rb8 16. Rhe1 Rf7 17. Bxe7 Rxe7 18. Rxe7 Qxe7 19. Nxd5 cxd5 20. Qxd5+ Be6 21. Qxe6+ Qxe6 22. Bxe6+ Kf8 23. Rd7 Re8 24. Rf7+ Kg8 25. Bd5 |
| ECO B95 in 1954 play it! krogius nikolai defeats black's cherepkov alexan in 73 moves | 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. Qf3 Be7 8. O-O-O Qc7 9. g4 Bd7 10. Be3 h6 11. h4 Nc6 12. Nxc6 Bxc6 13. g5 Nd7 14. g6 f5 15. Qh3 Bf6 16. Bd4 Bxd4 17. Rxd4 O-O 18. Bc4 Nc5 19. Rhd1 b5 20. Bb3 Nxb3+ 21. axb3 Rac8 22. exf5 e5 23. Rxd6 b4 24. f6 Rxf6 25. Rxf6 gxf6 26. Qe6+ Kg7 27. Rd6 Be8 28. Qxf6+ Kg8 29. Qe6+ Kg7 30. Qxe5+ Kg8 31. Qe6+ Kg7 32. Qf6+ Kg8 33. g7 Bd7 34. Qxh6 bxc3 35. Qh8+ Kf7 36. Rf6+ Kxf6 37. g8=Q+ |
| ECO B33 in 1969 play it! krogius nikolai defeats black's szilagyi gyorgy in 47 moves | 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Bg5 Bd7 7. Qd2 Nxd4 8. Qxd4 Qa5 9. Bd2 Qc5 10. Qxc5 dxc5 11. e5 Ng4 12. Nb5 O-O-O 13. Nxa7+ Kb8 14. Ba5 Re8 15. Nb5 Rc8 16. Bc3 f6 17. exf6 exf6 18. Be2 Re8 19. O-O-O Bc8 20. Bxg4 Bxg4 21. f3 Bc8 22. Ba5 b6 23. Bxb6 Kb7 24. Ba5 |
| ECO C50 in 1959 play it! krogius nikolai defeats black's spassky boris v by checkmate in 76 moves | 1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. O-O Nf6 5. Nxe5 Nxe5 6. d4 c6 7. dxe5 Nxe4 8. Bd3 d5 9. exd6 Nf6 10. Qe2+ Be6 11. Bg5 Qxd6 12. Bxf6 gxf6 13. Nd2 Qe5 14. Ne4 Bb6 15. Kh1 O-O-O 16. a4 Kb8 17. a5 Bc7 18. f4 Qd4 19. Nc3 f5 20. a6 b5 21. Qf3 Qb6 22. Qh3 Qc5 23. Qf3 b4 24. Na4 Qd6 25. Qh3 Rhg8 26. Be2 Qd2 27. Bf3 Bc4 28. Rfd1 Qxf4 29. Rxd8+ Rxd8 30. Bxc6 Be2 31. Rg1 Rd1 32. g4 Rxg1+ 33. Kxg1 Qc1+ 34. Kf2 Qxc2 35. Qxh7 Bb5+ 36. Kg1 Qd1+ 37. Kf2 Qf1+ 38. Ke3 Qf4# |
| ECO C90 in 1969 play it! krogius nikolai defeats black's kostro jerzy in 85 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. d3 h6 10. Nbd2 Re8 11. Nf1 Bf8 12. Ne3 Na5 13. Bc2 c5 14. a3 Nc6 15. b4 Be6 16. d4 cxd4 17. cxd4 exd4 18. Nxd4 Nxd4 19. Qxd4 Rc8 20. Bb2 Ng4 21. Nxg4 Bxg4 22. Qd3 Be6 23. Rad1 Bc4 24. Qf3 Qb6 25. h4 Qc6 26. h5 Rcd8 27. Re3 Be6 28. Bb1 Qb7 29. Qf4 f6 30. Rg3 Kh8 31. Rg6 Bg8 32. Rg3 Qe7 33. Re3 Qf7 34. Rd5 Qb7 35. Rf5 Bh7 36. Rg3 Bxf5 37. Qxf5 Re5 38. Bxe5 dxe5 39. Ba2 Qc7 40. Kh2 a5 41. Qe6 Bd6 42. bxa5 Qxa5 43. Rxg7 |
| ECO C43 in 1970 play it! krogius nikolai defeats black's chernikov oleg in 61 moves | 1. e4 e5 2. Nf3 Nf6 3. d4 Nxe4 4. Bd3 d5 5. Nxe5 Bd6 6. Nc3 Nxc3 7. bxc3 O-O 8. O-O c5 9. Qh5 g6 10. Qh6 c4 11. Bg5 Be7 12. Bxe7 Qxe7 13. Rae1 Qd6 14. Nxf7 Rxf7 15. Re8+ Rf8 16. Rfe1 Nc6 17. Bxg6 hxg6 18. Rxf8+ Qxf8 19. Qxg6+ Kh8 20. Re8 Qxe8 21. Qxe8+ Kg7 22. g4 Rb8 23. Qh5 Be6 24. f4 Bf7 25. Qg5+ Kf8 26. h4 Re8 27. h5 Re7 28. f5 Bg8 29. Qh6+ Ke8 30. g5 Rd7 31. g6 |
| ECO C79 in 1953 play it! krogius nikolai defeats black's borisenko georgy in 81 moves | 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O d6 6. Bxc6+ bxc6 7. d4 Bg4 8. dxe5 Nxe4 9. h3 Bh5 10. c4 Be7 11. Re1 d5 12. Qa4 O-O 13. Nbd2 Bc5 14. Nxe4 dxe4 15. Nh2 f5 16. Qxc6 Bb4 17. Rf1 Be2 18. a3 Bxf1 19. Nxf1 Be7 20. Ne3 Qe8 21. Nd5 Bh4 22. Qxc7 Rc8 23. Qb6 Rxc4 24. g3 Bd8 25. Qxa6 Rd4 26. Nc3 Qxe5 27. Bf4 Qe8 28. b4 g5 29. Be3 Rd3 30. Ne2 Qd7 31. Kh2 Bf6 32. Rc1 f4 33. Bc5 Rf7 34. Qa8+ Kg7 35. Qxe4 Rxa3 36. Nd4 Ra2 37. Nf5+ Kh8 38. g4 h5 39. Rd1 Qb7 40. Qe8+ Kh7 41. Nd6 |
| ECO C78 in 1957 play it! krogius nikolai defeats black's cherepkov alexan in 83 moves | 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O b5 6. Bb3 Be7 7. Re1 O-O 8. d3 d6 9. c3 Be6 10. Bc2 d5 11. exd5 Qxd5 12. Nbd2 Rad8 13. Qe2 Bc5 14. h3 Rfe8 15. Ng5 h6 16. Nxe6 Qxe6 17. Qf3 Bb6 18. Bb3 Qd7 19. Ne4 Nxe4 20. Rxe4 Na5 21. Bc2 f5 22. Re1 c5 23. Be3 Rb8 24. Rad1 Nc6 25. Qh5 Rf8 26. Bxh6 gxh6 27. Qg6+ Qg7 28. Qxc6 Kh8 29. Rxe5 Rfc8 30. Qd5 Rd8 31. Qe6 Rg8 32. g3 Bc7 33. Rxf5 Bxg3 34. Kf1 Rbe8 35. Qf6 Bh2 36. f3 Re6 37. Qxg7+ Rxg7 38. Rf8+ Rg8 39. Rxg8+ Kxg8 40. Bb3 c4 41. dxc4 Kg7 42. cxb5 |
| ECO C06 in 1956 play it! krogius nikolai defeats black's kortchnoi victor in 61 moves | 1. e4 e6 2. d4 d5 3. Nd2 Nf6 4. e5 Nfd7 5. Bd3 c5 6. c3 b6 7. f4 Ba6 8. Bxa6 Nxa6 9. Ndf3 Be7 10. Ne2 c4 11. O-O O-O 12. g4 f5 13. exf6 Nxf6 14. Ne5 Nc7 15. Ng3 b5 16. Qe2 Bd6 17. Bd2 Nd7 18. f5 Qe7 19. Rae1 Bxe5 20. dxe5 Rae8 21. Qf2 Qd8 22. Qxa7 exf5 23. Nxf5 Rxe5 24. Rxe5 Nxe5 25. Bf4 Re8 26. Bxe5 Rxe5 27. Qd4 Qe8 28. Nxg7 Qe7 29. Nf5 Qe6 30. Nh6+ Kg7 31. Nf7 |
| ECO C03 in 1977 play it! krogius nikolai defeats black's karner hillary in 73 moves | 1. e4 e6 2. d4 d5 3. Nd2 a6 4. e5 Bd7 5. Ndf3 Bb5 6. Bxb5+ axb5 7. Qd3 Qd7 8. Ne2 b6 9. O-O c5 10. c3 c4 11. Qc2 Ne7 12. Ng3 h5 13. Bg5 Ng6 14. Nh4 Nxh4 15. Bxh4 Be7 16. Bxe7 Qxe7 17. a4 h4 18. Ne2 Qa7 19. f4 g6 20. b3 cxb3 21. Qxb3 bxa4 22. Qb5+ Nd7 23. c4 dxc4 24. Nc3 O-O 25. Rxa4 Qb7 26. Rxc4 Rfc8 27. d5 Rxc4 28. Qxc4 Rc8 29. Qd4 h3 30. gxh3 exd5 31. Nxd5 Rc2 32. f5 Nf8 33. e6 fxe6 34. Nf6+ Kf7 35. fxg6+ Ke7 36. Ne4 Qd5 37. Qxd5 |
| ECO C06 in 1958 play it! krogius nikolai defeats black's tolush alexander in 109 moves | 1. e4 e6 2. d4 d5 3. Nd2 Nf6 4. e5 Nfd7 5. Bd3 c5 6. c3 Nc6 7. Ne2 Qb6 8. Nf3 cxd4 9. cxd4 f6 10. exf6 Nxf6 11. O-O Bd6 12. Bf4 Bxf4 13. Nxf4 O-O 14. Re1 Ne4 15. g3 Qxb2 16. Bxe4 dxe4 17. Rxe4 Bd7 18. d5 exd5 19. Qxd5+ Rf7 20. Rae1 h6 21. Nd3 Qb6 22. Nc5 Qc7 23. Ne6 Qa5 24. Qb3 Qb6 25. Qd5 Qa5 26. Qb3 Qb6 27. Qd5 Nb4 28. Qb3 Na6 29. Qa3 Rc8 30. Nf4 Rc2 31. Nd4 Rd2 32. Qc3 Rxa2 33. Qc4 Qb2 34. Re8+ Kh7 35. R8e2 Re7 36. Rxb2 Rxe1+ 37. Kg2 Rxb2 38. Nd3 Reb1 39. Nxb2 Rxb2 40. Qd5 Be8 41. h4 Rb6 42. Qe4+ Bg6 43. Qe5 Rf6 44. f4 Nb4 45. f5 Bf7 46. g4 Nc6 47. Nxc6 Rxc6 48. g5 a6 49. Kg3 b5 50. Qe7 Kg8 51. Qd8+ Kh7 52. Qd7 Rc3+ 53. Kf2 Rc2+ 54. Ke1 Bh5 55. g6+ |
| ECO B06 in 1967 play it! krogius nikolai defeats black's david bronstein in 65 moves | 1. e4 g6 2. d4 Bg7 3. Nc3 c6 4. f4 d5 5. e5 h5 6. Bd3 Nh6 7. Nf3 Bf5 8. O-O Nd7 9. Nh4 e6 10. Nxf5 Nxf5 11. Ne2 Bf8 12. c3 c5 13. Kh1 c4 14. Bc2 Qc7 15. Ng1 O-O-O 16. Nf3 Bh6 17. Qe1 Rde8 18. b4 Bg7 19. a4 f6 20. Kg1 Qd8 21. Ra2 h4 22. Bb1 fxe5 23. dxe5 Nb8 24. Be3 Nc6 25. Qf2 h3 26. g3 b6 27. a5 Kb7 28. Bxf5 gxf5 29. axb6 axb6 30. Rfa1 Qc7 31. Nd4 Ra8 32. Nb5 Rxa2 33. Qxa2 |
| ECO D35 in 1965 play it! krogius nikolai defeats black's kovacs laszlo m by checkmate in 65 moves | 1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. cxd5 exd5 5. Bg5 c6 6. e3 h6 7. Bh4 Bf5 8. Qf3 Bg6 9. Bxf6 gxf6 10. Qd1 Qb6 11. Qd2 Nd7 12. Nf3 Rg8 13. Be2 Bd6 14. O-O f5 15. Bd3 Nf6 16. Ne5 Ne4 17. Qc2 Bh7 18. Na4 Qc7 19. f3 f6 20. fxe4 fxe5 21. dxe5 Bxe5 22. exd5 Bxh2+ 23. Kh1 Bg3 24. Bxf5 Qe7 25. Qc4 Rg5 26. dxc6 b5 27. Bd7+ Kd8 28. Qf7 Bd6 29. Bh3 Be4 30. Rad1 bxa4 31. Rxd6+ Qxd6 32. c7+ Qxc7 33. Qf8# |
| ECO D16 in 1967 play it! krogius nikolai defeats black's zakharian vanik in 61 moves | 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 dxc4 5. a4 Bg4 6. Ne5 Bh5 7. g3 e6 8. Bg2 Be7 9. O-O a5 10. Nxc4 Na6 11. h3 Nb4 12. g4 Bg6 13. e4 c5 14. dxc5 Qxd1 15. Rxd1 Bxc5 16. Be3 Bxe3 17. Nxe3 Nd7 18. Nb5 Ke7 19. f4 f6 20. f5 Bf7 21. fxe6 Bxe6 22. Nd5+ Bxd5 23. exd5 Nc5 24. Rac1 Nba6 25. d6+ Kd7 26. Nc7 Rac8 27. Bf1 Nxc7 28. Rxc5 Na6 29. Rxa5 Rc5 30. Rb5 Rb8 31. Rb6 |
| ECO D15 in 1963 play it! krogius nikolai defeats black's barczay laszlo in 125 moves | 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 e6 5. e3 Nbd7 6. Bd3 dxc4 7. Bxc4 b5 8. Be2 Bb7 9. O-O Be7 10. e4 b4 11. e5 bxc3 12. exf6 Nxf6 13. bxc3 O-O 14. Rb1 Qc7 15. Bf4 Qxf4 16. Rxb7 Nd5 17. Qc2 Bf6 18. g3 Qf5 19. Qxf5 exf5 20. Rc1 Rfe8 21. Bd1 Reb8 22. Rxb8+ Rxb8 23. Bb3 Rd8 24. Ba4 c5 25. Bb3 g5 26. Bxd5 Rxd5 27. c4 Rd8 28. d5 Rb8 29. Rc2 a5 30. Re2 g4 31. Ne1 a4 32. Nd3 Bd4 33. Kg2 a3 34. Re7 h5 35. h3 f4 36. hxg4 fxg3 37. Kxg3 h4+ 38. Kg2 Kf8 39. Re1 Rb6 40. Rh1 Kg7 41. Rxh4 Ra6 42. Rh1 Ra4 43. Rc1 Kf6 44. f4 Ra8 45. Re1 Rb8 46. Kf3 Rh8 47. Kg3 Rb8 48. Re2 Rb1 49. Re1 Rb8 50. g5+ Kf5 51. d6 Rd8 52. Ne5 Bc3 53. Re3 Bd2 54. Nxf7 Bxe3 55. Nxd8 Bxf4+ 56. Kf3 Bxd6 57. Nb7 Bf8 58. g6 Kxg6 59. Ke4 Kg5 60. Kd5 Kf4 61. Nxc5 Ke3 62. Na6 Kd3 63. c5 |
| ECO D31 in 1970 play it! krogius nikolai defeats black's pozdniakov in 43 moves | 1. d4 d5 2. c4 e6 3. Nc3 Be7 4. Nf3 Nf6 5. g3 O-O 6. Bg2 c6 7. O-O b6 8. Ne5 Bb7 9. e4 Qc8 10. Bg5 Nbd7 11. cxd5 exd5 12. exd5 Nxe5 13. dxe5 Nxd5 14. Bxe7 Nxe7 15. Ne4 Qe6 16. Nd6 Rfd8 17. Qa4 Rxd6 18. exd6 Qxd6 19. Rfe1 h6 20. Rad1 Qc7 21. Rd2 Bc8 22. Qf4 |
| ECO D19 in 1962 play it! krogius nikolai defeats black's mnatsakanian edu in 123 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 Bg6 10. Ne5 Nbd7 11. Nxg6 hxg6 12. Rd1 Qe7 13. e4 e5 14. d5 cxd5 15. Nxd5 Nxd5 16. Bxd5 Nb6 17. Bb3 Rfd8 18. Be3 Rxd1+ 19. Rxd1 Rd8 20. Rxd8+ Qxd8 21. g3 Qd7 22. h4 Nxa4 23. Bxa7 b6 24. Bb8 Nc5 25. Bd5 Qe8 26. Bc7 Nd7 27. Qa6 Bc5 28. Bc6 Qe6 29. Bd5 Qh3 30. Qd3 Nf6 31. Qf3 Bd4 32. Bd8 Qg4 33. Kg2 Qxf3+ 34. Kxf3 Nxd5 35. exd5 f5 36. b3 Kf7 37. Ke2 Ke8 38. Bc7 Kd7 39. Bb8 e4 40. f3 b5 41. fxe4 fxe4 42. g4 Ke7 43. Bf4 Kd7 44. Be3 Be5 45. Bc5 Bf4 46. Bf8 Kc7 47. Bxg7 Kd6 48. h5 gxh5 49. gxh5 Ke7 50. d6+ Bxd6 51. Ke3 Kf7 52. Bd4 Kg8 53. Kxe4 Kh7 54. Be3 Bb4 55. Kd5 Bc3 56. Kc5 b4 57. Kc4 Be1 58. Kd3 Bc3 59. Bd2 Bf6 60. Kc4 Be7 61. Bxb4 Bg5 62. Kd3 |
