| ECO A04 in 1982 play it! sosonko gennadi defeats white's siegel georg in 62 moves | 1. Nf3 c5 2. g3 Nc6 3. Bg2 e5 4. d3 d5 5. O-O Nf6 6. e4 Be7 7. Nc3 dxe4 8. Nxe4 O-O 9. Nxf6+ Bxf6 10. Nd2 Be6 11. Ne4 Be7 12. Be3 Qb6 13. f4 exf4 14. gxf4 f5 15. Nc3 Rad8 16. Na4 Qa5 17. b3 Bd5 18. Bxd5+ Rxd5 19. Qf3 Rd7 20. Rae1 Nb4 21. Qg2 Qc7 22. Nc3 Bf6 23. Nb5 Qb6 24. a4 Nd5 25. Kh1 Nxe3 26. Rxe3 c4 27. Rfe1 cxb3 28. cxb3 a6 29. Re6 Qc5 30. d4 Qb4 31. Na7 Qxd4 |
| ECO A09 in 1987 play it! sosonko gennadi defeats white's larsen bent in 58 moves | 1. Nf3 d5 2. c4 e6 3. b3 Nf6 4. Bb2 Be7 5. g3 O-O 6. Bg2 c5 7. cxd5 exd5 8. d4 Nc6 9. O-O Ne4 10. dxc5 Bxc5 11. a3 Re8 12. Nc3 Nxc3 13. Bxc3 d4 14. Bb2 Bg4 15. Rc1 Bb6 16. h3 Bh5 17. g4 Bg6 18. b4 a6 19. Rxc6 bxc6 20. Nxd4 Bxd4 21. Bxd4 Be4 22. f3 Bd5 23. e4 Bc4 24. Rf2 a5 25. Rd2 axb4 26. Bxg7 Qg5 27. Bd4 bxa3 28. Qe1 a2 29. h4 a1=Q |
| ECO A06 in 1978 play it! sosonko gennadi defeats white's marcus joost in 70 moves | 1. Nf3 d5 2. d4 Nf6 3. c4 e6 4. Nc3 Bb4 5. cxd5 exd5 6. Qa4+ Nc6 7. Bg5 h6 8. Bxf6 Qxf6 9. e3 O-O 10. Be2 Be6 11. O-O a6 12. Rfc1 Bd6 13. Qd1 Rae8 14. Na4 Nd8 15. Nc5 Bc8 16. b4 Qe7 17. Qb3 c6 18. a4 f5 19. Re1 Qf7 20. Nd3 f4 21. Nfe5 Bxe5 22. Nxe5 Qf6 23. e4 Ne6 24. Ng4 Qg5 25. Rad1 dxe4 26. d5 f3 27. dxe6 Bxe6 28. Qb2 fxe2 29. Qxe2 Bxg4 30. Qc4+ Be6 31. Qc3 Bd5 32. Re3 Rf3 33. h3 Ref8 34. Rd2 Rxe3 35. fxe3 Rf3 |
| ECO A06 in 1974 play it! sosonko gennadi defeats white's prameshuber alek in 62 moves | 1. Nf3 d5 2. d4 Nf6 3. c4 e6 4. Nc3 Bb4 5. cxd5 exd5 6. Bg5 h6 7. Bxf6 Qxf6 8. e3 c6 9. Be2 O-O 10. O-O Bd6 11. Rc1 Re8 12. Re1 Bf5 13. a3 Nd7 14. Nb1 g5 15. Nfd2 Re7 16. Nf1 Kg7 17. Ng3 Bxg3 18. hxg3 h5 19. Nc3 Rh8 20. Bf3 Qg6 21. Qb3 Nf6 22. Bd1 h4 23. gxh4 Rxh4 24. g3 Rh8 25. Bf3 Qh7 26. Bg2 Qh2+ 27. Kf1 Bh3 28. Bxh3 Rxh3 29. Qd1 Nh5 30. Ke2 Nxg3+ 31. Kd3 Qxf2 |
| ECO A04 in 1980 play it! sosonko gennadi defeats white's sigurjonsson gud in 62 moves | 1. Nf3 c5 2. g3 Nc6 3. Bg2 g6 4. d4 cxd4 5. Nxd4 Bg7 6. Nxc6 bxc6 7. c4 Qa5+ 8. Nd2 Nf6 9. O-O O-O 10. Qc2 Qh5 11. e4 d6 12. Rb1 Bh3 13. f3 Nd7 14. Nb3 f5 15. Bxh3 Qxh3 16. Be3 c5 17. Nc1 Bd4 18. Bxd4 cxd4 19. Nd3 fxe4 20. fxe4 Qg4 21. Qg2 Nc5 22. Nxc5 dxc5 23. e5 Rad8 24. Rxf8+ Rxf8 25. Re1 Rf3 26. Qd2 h5 27. Rf1 Rxf1+ 28. Kxf1 Qf5+ 29. Qf4 Qb1+ 30. Kg2 Qxb2+ 31. Kh3 Qc2 |
| ECO A04 in 2007 play it! sosonko gennadi defeats white's van den doel eri in 60 moves | 1. Nf3 c5 2. g3 d5 3. Bg2 Nc6 4. O-O e5 5. d3 Be7 6. e4 Nf6 7. Nc3 d4 8. Ne2 Nd7 9. Nd2 h5 10. f4 h4 11. Nf3 h3 12. Bh1 Nf6 13. Nd2 Ng4 14. Nb1 g5 15. Bf3 gxf4 16. gxf4 Rg8 17. Ng3 Bh4 18. Bxg4 Bxg4 19. Qe1 Qd7 20. a3 O-O-O 21. b4 c4 22. Nd2 exf4 23. Rxf4 Ne5 24. Nxc4 Bxg3 25. hxg3 Nf3+ 26. Rxf3 h2+ 27. Kf2 Bxf3 28. Kxf3 Qg4+ 29. Kg2 h1=Q+ 30. Kxh1 Qh3+ |
| ECO A22 in 1980 play it! sosonko gennadi defeats white's andriessen willi in 80 moves | 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. g3 Bc5 5. Bg2 d6 6. d3 h6 7. O-O a6 8. Nd5 O-O 9. Nd2 Ba7 10. e3 Be6 11. Qb3 Rb8 12. Ne4 Nxe4 13. dxe4 Na5 14. Qa4 c6 15. Bd2 Nxc4 16. Qxc4 cxd5 17. exd5 Bd7 18. Rfc1 Bc5 19. Bb4 Rc8 20. Bxc5 Rxc5 21. Qb4 b6 22. Qa3 a5 23. Rc3 f5 24. Rac1 f4 25. exf4 exf4 26. Rxc5 bxc5 27. Rc4 a4 28. Qc3 Qg5 29. Qc1 f3 30. Qxg5 hxg5 31. Bf1 g4 32. h3 Re8 33. Rc1 gxh3 34. Kh2 Bf5 35. Rc4 Be4 36. Rxa4 Bxd5 37. Ra6 Re2 38. Rxd6 Rxf2+ 39. Kxh3 Rxf1 40. Rxd5 Rh1+ |
| ECO A22 in 1979 play it! sosonko gennadi defeats white's fedorowicz john in 120 moves | 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. d3 d5 5. cxd5 Nxd5 6. e3 Be7 7. Be2 O-O 8. O-O Be6 9. Qc2 Qd7 10. a3 f5 11. Nxd5 Qxd5 12. b4 a5 13. e4 Qd7 14. b5 Nd4 15. Nxd4 exd4 16. Bf3 Rac8 17. exf5 Bd5 18. Bxd5+ Qxd5 19. Bb2 Qxb5 20. Bxd4 Rxf5 21. Qc3 Qd5 22. Rae1 Bxa3 23. Qxa3 Qxd4 24. Re4 Qc5 25. Qb3+ Qd5 26. Qc3 b6 27. g3 c5 28. Rb1 Rf6 29. Re7 Qd4 30. Qe1 Rcf8 31. Qe3 Qd5 32. f4 h6 33. Qe4 Qd6 34. Rb7 Qd8 35. Re1 Kh8 36. h4 R6f7 37. Rxf7 Rxf7 38. Kh2 Qd6 39. Re2 Rf8 40. f5 b5 41. Kh3 b4 42. Ra2 Qc7 43. Qe6 Rf6 44. Qd5 Rf8 45. Rc2 Rc8 46. Rc4 Qc6 47. Qf7 Qh1+ 48. Kg4 Qd1+ 49. Kh3 Qxd3 50. Rg4 Qf1+ 51. Kh2 Qa1 52. Rg6 Rd8 53. Rd6 Rxd6 54. Qf8+ Kh7 55. Qxd6 Qe1 56. Qxc5 b3 57. f6 Qe2+ 58. Kh3 Qf1+ 59. Kh2 Qxf6 60. Qxa5 Qf2+ |
| ECO A22 in 1983 play it! sosonko gennadi defeats white's seirawan yasser in 116 moves | 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. e3 Bb4 5. Nd5 e4 6. Ng1 O-O 7. Ne2 Nxd5 8. cxd5 Ne5 9. Ng3 f5 10. a3 Bd6 11. d3 Qh4 12. dxe4 fxe4 13. Be2 Nd3+ 14. Bxd3 exd3 15. f4 b6 16. Qxd3 a5 17. Bd2 Ba6 18. Qc2 Qg4 19. Qd1 Rxf4 20. Qxg4 Rxg4 21. O-O-O Bxg3 22. hxg3 Rxg3 23. e4 Rf8 24. Bc3 Rxg2 25. e5 Bc4 26. Rd4 Bb3 27. Re1 Rg6 28. Rd3 a4 29. e6 dxe6 30. d6 cxd6 31. Rxd6 h5 32. Kd2 b5 33. Re5 Rh6 34. Rxb5 Rf7 35. Bd4 h4 36. Rd8+ Rf8 37. Rxf8+ Kxf8 38. Rb8+ Kf7 39. Rb7+ Kg6 40. Rxg7+ Kf5 41. Bg1 h3 42. Bh2 Ke4 43. Ke2 Bc4+ 44. Ke1 Rf6 45. Rg4+ Kd5 46. Bg3 e5 47. Rg5 h2 48. Rxe5+ Kd4 49. Bxh2 Rf1+ 50. Kd2 Rf2+ 51. Kc1 Rxh2 52. Re8 Bd3 53. Ra8 Ke3 54. Re8+ Be4 55. Rd8 Rh1+ 56. Rd1 Rxd1+ 57. Kxd1 Kd3 58. Kc1 Kc4 |
| ECO A18 in 1978 play it! sosonko gennadi defeats white's timman jan hein in 76 moves | 1. c4 Nf6 2. Nc3 e6 3. e4 d5 4. e5 d4 5. exf6 dxc3 6. bxc3 Qxf6 7. Nf3 e5 8. Qe2 Nc6 9. d4 Bg4 10. dxe5 Bxf3 11. exf6+ Bxe2 12. Bxe2 gxf6 13. Be3 O-O-O 14. Rb1 f5 15. O-O Bg7 16. Rb3 Rhe8 17. g3 Bh6 18. Bxh6 Rxe2 19. Rb5 Ne5 20. Bf4 f6 21. Rfb1 b6 22. c5 c6 23. R5b2 Rxb2 24. Rxb2 Nd3 25. Re2 Nxc5 26. Re7 Rd7 27. Re8+ Kb7 28. Kg2 b5 29. Rb8+ Ka6 30. Rc8 Kb6 31. Be3 Kb7 32. Rf8 Ne4 33. Kf3 Nxc3 34. Rxf6 Nxa2 35. Rxf5 b4 36. Bg5 b3 37. Bf6 Rf7 38. Ke4 Rxf6 |
| ECO A00 in 1989 play it! sosonko gennadi defeats white's peelen piet in 88 moves | 1. g3 d5 2. Bg2 e5 3. d3 Nf6 4. Nf3 Nc6 5. O-O Be7 6. Nbd2 O-O 7. e4 d4 8. Nc4 Nd7 9. Bh3 Bf6 10. Ne1 Nb6 11. Bxc8 Qxc8 12. Nxb6 axb6 13. f4 exf4 14. Bxf4 Be5 15. Qd2 f5 16. Bxe5 Nxe5 17. Qg5 h6 18. Qh5 Ng4 19. Rxf5 Rxf5 20. Qxf5 Qxf5 21. exf5 Ne3 22. Ng2 Nxf5 23. Rf1 Ra5 24. a3 g5 25. g4 Ne7 26. Re1 Kf7 27. Re4 c5 28. Ne1 Nd5 29. Nf3 Ra8 30. Ne5+ Kg7 31. Nc4 Rd8 32. h3 b5 33. Nd2 Rd7 34. Nf1 Nf4 35. h4 c4 36. hxg5 hxg5 37. Re5 Rd5 38. Rxd5 Nxd5 39. Ng3 Ne3 40. Ne2 Nxc2 41. Nc1 Kf6 42. Kf2 Ke5 43. a4 Nb4 44. dxc4 bxc4 |
| ECO A00 in 1980 play it! sosonko gennadi defeats white's karlsson lars in 82 moves | 1. g3 e5 2. Bg2 d5 3. d3 Nf6 4. Nf3 Nc6 5. O-O Be7 6. a3 a5 7. Bg5 O-O 8. Nbd2 Be6 9. Ne1 Qc8 10. c4 dxc4 11. Nxc4 Bxc4 12. Bxf6 Bxf6 13. dxc4 Rd8 14. Nd3 Qf5 15. Bxc6 bxc6 16. Qc2 h5 17. Rad1 h4 18. Ne1 Qxc2 19. Nxc2 Rdb8 20. Rb1 Rb3 21. Na1 Rb7 22. Nc2 c5 23. Ne3 Rab8 24. Nd5 Rxb2 25. Rxb2 Rxb2 26. Nxf6+ gxf6 27. gxh4 Rxe2 28. Rb1 Re4 29. Rb5 Rg4+ 30. Kf1 Rxc4 31. Rxa5 Rxh4 32. Rxc5 Rxh2 33. Rxc7 Rh3 34. Ra7 Kg7 35. Ra8 f5 36. Ra6 f6 37. Kg2 Rb3 38. Ra8 f4 39. Ra4 Kg6 40. Ra8 e4 41. a4 Rb2 |
| ECO A01 in 1978 play it! sosonko gennadi defeats white's baljon christofo in 56 moves | 1. b3 d5 2. Bb2 Nf6 3. c4 e6 4. Nf3 Be7 5. e3 O-O 6. Nc3 c5 7. cxd5 exd5 8. d4 Bg4 9. Be2 Nc6 10. dxc5 Bxc5 11. O-O a6 12. Rc1 Ba7 13. Nd4 Bd7 14. Nxc6 Bxc6 15. Bf3 Ne4 16. Qd3 Re8 17. Rcd1 Qh4 18. g3 Qh6 19. Bg2 Rac8 20. a4 Nc5 21. Qc2 Nd7 22. Bxd5 Bxd5 23. Rxd5 Nf6 24. Qf5 Nxd5 25. Nxd5 Bc5 26. Rc1 Qe6 27. Qg5 Qg6 28. Ne7+ Bxe7 |
| ECO A00 in 1977 play it! sosonko gennadi defeats white's westerinen heikk in 74 moves | 1. d3 d5 2. Nf3 Nc6 3. g3 e5 4. Bg2 Nf6 5. O-O Be7 6. c4 O-O 7. cxd5 Nxd5 8. Nc3 Be6 9. Bd2 Qd7 10. Rc1 Rad8 11. Ne4 f6 12. Nc5 Bxc5 13. Rxc5 Nd4 14. Nxd4 exd4 15. e4 dxe3 16. fxe3 b6 17. Rc1 c5 18. Rf2 Rfe8 19. a3 Bh3 20. Bxh3 Qxh3 21. e4 Nc7 22. Qa4 Ne6 23. Qxa7 Rxd3 24. Qxb6 Red8 25. Be1 Qg4 26. Rc3 Qxe4 27. Rxd3 Rxd3 28. Bc3 Ng5 29. Qb3+ c4 30. Qb8+ Kf7 31. Qa7+ Kg6 32. h4 Rxg3+ 33. Kf1 Qd3+ 34. Re2 Rf3+ 35. Kg1 Nh3+ 36. Kh1 Rf1+ 37. Kh2 Qxe2+ |
| ECO B63 in 2007 play it! sosonko gennadi defeats white's van der weide ka by checkmate in 132 moves | 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Bg5 e6 7. Qd2 Be7 8. O-O-O Nxd4 9. Qxd4 O-O 10. f3 Bd7 11. h4 Bc6 12. Kb1 Qa5 13. Qd2 Qc7 14. Bd3 Rfd8 15. h5 d5 16. e5 Ne4 17. fxe4 dxe4 18. h6 g6 19. Qf4 exd3 20. cxd3 f5 21. Rhg1 Bxg5 22. Qxg5 Rd4 23. g4 Rf8 24. Qe3 Rxg4 25. Rxg4 fxg4 26. Rg1 Rf5 27. d4 Qf7 28. a4 Rf3 29. Qe2 g3 30. d5 exd5 31. e6 Qf5+ 32. Ka2 d4 33. Rd1 d3 34. Qe1 g2 35. e7 Be8 36. Qg1 Qf7+ 37. Ka1 Qxe7 38. Qxg2 Bc6 39. Qg4 Qd7 40. Qc4+ Qf7 41. Qd4 a6 42. Rxd3 Rf1+ 43. Rd1 Rxd1+ 44. Qxd1 Qf6 45. Nd5 Qh4 46. b3 Kf7 47. Qf1+ Ke6 48. Nf4+ Ke5 49. Nd3+ Kd4 50. Nb4 Kc3 51. Nxc6 bxc6 52. Qf3+ Kb4 53. Kb2 Qd4+ 54. Kc2 Qc5+ 55. Kb2 Qe5+ 56. Ka2 Qh2+ 57. Kb1 Qd2 58. a5 c5 59. Qe4+ Kxb3 60. Qf3+ Qc3 61. Qf7+ c4 62. Qb7+ Ka3 63. Qg7 Qb3+ 64. Kc1 c3 65. Qe7+ Ka2 66. Qxh7 Qb1# |
| ECO B22 in 1978 play it! sosonko gennadi defeats white's sanz alonso frac in 70 moves | 1. e4 c5 2. c3 d5 3. exd5 Qxd5 4. d4 e6 5. Nf3 Nc6 6. Bd3 cxd4 7. cxd4 Nf6 8. Nc3 Qd6 9. O-O Be7 10. Re1 O-O 11. Bg5 Rd8 12. Nb5 Qd7 13. Qa4 h6 14. Bh4 Nd5 15. Bxe7 Qxe7 16. Nc3 Qb4 17. Bb5 Qxa4 18. Bxa4 Nxc3 19. bxc3 Bd7 20. Bxc6 Bxc6 21. Ne5 Rac8 22. a4 Bd5 23. Ra3 a5 24. f3 Rc7 25. Kf2 Rdc8 26. Rc1 f6 27. Nd3 Rc4 28. Ke2 e5 29. dxe5 fxe5 30. g3 Re8 31. Re1 e4 32. Kd2 Rd8 33. fxe4 Bxe4 34. Re3 Bc6 35. Re5 Be4 |
| ECO B24 in 1982 play it! sosonko gennadi defeats white's bartsch b in 78 moves | 1. e4 c5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. d3 Rb8 6. Be3 d6 7. a4 a6 8. f4 Nf6 9. h3 O-O 10. Nge2 Bd7 11. O-O b5 12. axb5 axb5 13. Qd2 b4 14. Nd1 Qb6 15. g4 Nd4 16. Ng3 Bc6 17. f5 Nd7 18. Kh2 b3 19. c3 Nc2 20. Rb1 Nxe3 21. Nxe3 Bh6 22. h4 Bg7 23. g5 h5 24. gxh6 Bxh6 25. h5 Nf6 26. Bh3 c4 27. d4 Nxe4 28. Nxe4 Bxe4 29. Rbe1 d5 30. Qf2 Qc7+ 31. Kg1 gxh5 32. Qh4 Kh7 33. Qxh5 Qg3+ 34. Bg2 Rg8 35. Rf2 Rg5 36. Qxf7+ Rg7 37. Qh5 Rbg8 38. f6 exf6 39. Nxd5 Qxf2+ |
| ECO B75 in 1973 play it! sosonko gennadi defeats white's scholl eduard in 72 moves | 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Bg7 7. f3 Nc6 8. Bc4 O-O 9. Qe2 Bd7 10. O-O-O Rc8 11. Bb3 Ne5 12. Kb1 a5 13. a4 Rxc3 14. bxc3 Qc7 15. Nb5 Bxb5 16. Qxb5 Rc8 17. Bb6 Qb8 18. Qxa5 Nfd7 19. Bd4 Nc5 20. Qb5 Rc6 21. Bd5 Qa8 22. a5 Ra6 23. Bxc5 Rxa5 24. Qxa5 Qxa5 25. Bd4 b5 26. f4 Nc4 27. Bxg7 Kxg7 28. Rd3 Nb6 29. Bb3 b4 30. c4 Nd7 31. Rd5 Nc5 32. Rxc5 dxc5 33. Rd1 Qa8 34. Re1 Qd8 35. g3 Qd2 36. Rf1 Qxh2 |
| ECO B22 in 1978 play it! sosonko gennadi defeats white's castro oscar h in 78 moves | 1. e4 c5 2. c3 d5 3. exd5 Qxd5 4. d4 e6 5. Nf3 Nc6 6. Na3 Nf6 7. Nb5 Qd8 8. dxc5 Bxc5 9. Qxd8+ Kxd8 10. b4 Bb6 11. Nd6 Ke7 12. Nc4 Ne4 13. Nxb6 axb6 14. a3 f6 15. Bb2 Rd8 16. Be2 e5 17. O-O Be6 18. Rfd1 Bb3 19. Rd3 Nd6 20. Re1 Be6 21. Rdd1 Nc4 22. Bxc4 Bxc4 23. Nd4 Kf7 24. Nf5 Bb3 25. Ra1 Rd3 26. Ne3 b5 27. Re2 Rad8 28. Kf1 Ne7 29. Rc1 Nd5 30. Nxd5 R8xd5 31. Ba1 Rd1+ 32. Re1 Bc4+ 33. Kg1 Rxc1 34. Rxc1 Rd2 35. h3 f5 36. Re1 e4 37. g3 Kf6 38. Kg2 Ke5 39. g4 f4 |
| ECO B75 in 1990 play it! sosonko gennadi defeats white's mendez in 36 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. g4 Be6 10. O-O-O Ne5 11. h4 Bc4 12. Bh3 Ba6 13. b3 Qa5 14. g5 Nxf3 15. Qf2 Qxc3 16. Qxf3 Nh5 17. Kb1 e6 18. Qf2 d5 |