[Event "USA-ch"]
[Site "Greenville"]
[Date "1983.??.??"]
[Round "12"]
[White "Kogan, Boris Markovich"]
[Black "Lein, Anatoly"]
[Result "1/2-1/2"]
[BlackElo "2490"]

1. c4 c5 2. Nf3 Nf6 3. d4 e6 4. Nc3 cxd4 5. Nxd4 Bb4 6. g3 O-O 7. Bg2 d5 8. cxd5 Nxd5 9. Bd2 Bxc3 10. bxc3 e5 11. Nb3 Nc6 12. O-O Nde7 13. c4 Qc7 14. Qc2 Bf5 15. Qb2 Rad8 16. Rac1 Bc8 17. Bc3 b6 18. c5 b5 19. Qa3 Be6 20. Rfd1 Rb8 21. Ba5 Qc8 22. Bb4 Bh3 23. Bh1 Qg4 24. e4 Nxb4 25. Qxb4 Nc6 26. Qc3 b4 27. Qe3 Qc8 28. Bg2 Be6 29. Rd5 a5 30. Nd2 a4 31. Nc4 Rd8 32. Nb6 Qa6 33. Bf1 Qa5 34. Kg2 Bxd5 35. exd5 Rxb6 36. cxb6 Qxd5+ 37. Qf3 e4 38. Qe3 Nd4 39. Rc4 b3 40. axb3 axb3 41. b7 Qxb7 1/2-1/2