[Event "URS-ch51 Semifinal"]
[Site "Volgodonsk"]
[Date "1983.09.??"]
[Round "?"]
[White "Ionov, Sergey"]
[Black "Ehlvest, Jaan"]
[Result "0-1"]
[BlackElo "2460"]

1. c4 Nf6 2. Nc3 g6 3. e4 d6 4. d4 Bg7 5. f3 O-O 6. Be3 e5 7. d5 c6 8. Bd3 cxd5 9. cxd5 Ne8 10. Nge2 Bh6 11. Bf2 f5 12. exf5 gxf5 13. Qc2 Na6 14. a3 Nc5 15. Bc4 Kh8 16. f4 Nd7 17. O-O a6 18. Rad1 Ng7 19. Qd3 Nf6 20. h3 Bd7 21. Be3 Qe8 22. fxe5 Bxe3+ 23. Qxe3 dxe5 24. d6 f4 25. Nxf4 Nf5 26. Qd3 exf4 27. Rde1 Qc8 28. Re5 Nxd6 29. Ba2 Nf7 30. Bxf7 Rxf7 31. Rxf4 Qf8 32. Qd4 Rd8 33. Rd5 Qg7 34. Rd6 Rdf8 35. Rfxf6 Rxf6 36. Rxd7 Rf1+ 37. Kh2 Qxd4 38. Rxd4 R1f2 39. Ne4 Rxb2 40. Kg3 Rg8+ 41. Kh4 Rbxg2 42. Nf6 Rf8 0-1