[Event "Rubinstein Memorial-19"]
[Site "Polanica Zdroj"]
[Date "1981.08.??"]
[Round "12"]
[White "Spiridonov, Nikola"]
[Black "Chekhov, Valery A"]
[Result "0-1"]
[WhiteElo "2425"]
[BlackElo "2435"]

1. c4 e5 2. Nc3 Bb4 3. e3 Bxc3 4. bxc3 Nf6 5. Ne2 O-O 6. Ng3 Re8 7. Be2 c6 8. O-O d5 9. cxd5 cxd5 10. c4 d4 11. d3 dxe3 12. fxe3 Nc6 13. Rb1 Qd6 14. Nf5 Bxf5 15. Rxf5 b6 16. Qf1 Rad8 17. Rb5 Qe6 18. Ba3 Nd7 19. g4 Ne7 20. Rf2 a6 21. Rb3 Nc5 22. Bxc5 bxc5 23. Bf3 e4 24. Bxe4 Qxg4+ 25. Rg2 Qe6 26. Qa1 g6 27. Qb2 Nf5 28. Bxf5 Qxf5 29. Qe2 Rd6 30. e4 Qe5 31. Qf1 Red8 32. Rg3 Rf6 33. Qe1 Kg7 34. Kg2 Rdd6 35. Qe2 h5 36. Rf3 Rxf3 37. Qxf3 Rf6 38. Qe2 Qg5+ 39. Kh1 Qc1+ 40. Kg2 Qg5+ 41. Kh1 h4 42. Rb1 h3 43. a4 a5 44. Rd1 Rf4 45. Rg1 Qf6 46. Qe3 Rf3 47. Qxc5 Rxd3 48. Qf5 Qd4 49. Qf4 Rd1 0-1