[Event "URS-ch50 Semifinal"]
[Site "Yaroslavl"]
[Date "1982.07.??"]
[Round "?"]
[White "Ivanov, Alexander"]
[Black "Chekhov, Valery A"]
[Result "0-1"]
[BlackElo "2460"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. g3 e5 7. Nde2 Nbd7 8. a4 b6 9. Bg2 Bb7 10. h3 Be7 11. g4 O-O 12. Ng3 Nc5 13. h4 g6 14. g5 Nfd7 15. Nd5 Ne6 16. Be3 Rc8 17. c3 Re8 18. Qd2 Ndc5 19. Ra3 Nf4 20. Bxf4 exf4 21. Ne2 Bxd5 22. Qxd5 Ne6 23. Kf1 Bf8 24. Ra1 Bg7 25. Rh3 Be5 26. Nc1 Nc5 27. Nd3 a5 28. Rf3 Nxd3 29. Rxd3 Kg7 30. Rh3 Rh8 31. Qd1 h6 32. gxh6+ Rxh6 33. h5 Qd7 34. Rh1 Rch8 35. Bf3 gxh5 36. Bxh5 Kf8 37. Qf3 Qc6 38. Ke2 b5 39. Bg4 bxa4 40. Rxh6 Rxh6 41. Qd3 Qb6 42. Qd2 a3 43. bxa3 Rh2 44. Rf1 Qb5+ 45. Qd3 Qb2+ 46. Kf3 Qxa3 47. Bd7 Qc5 48. Qc2 Bd4 49. Bf5 Qc4 0-1