[Event "USA-ch/Zonal"]
[Site "South Bend"]
[Date "1981.??.??"]
[Round "12"]
[White "Kavalek, Lubomir"]
[Black "Lein, Anatoly"]
[Result "1/2-1/2"]
[WhiteElo "2550"]
[BlackElo "2485"]

1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. a3 Bb7 5. Nc3 d5 6. cxd5 exd5 7. g3 Be7 8. Bg2 O-O 9. O-O Nbd7 10. Bf4 c5 11. dxc5 bxc5 12. Ne5 Re8 13. Nc4 Ba6 14. Bxd5 Nxd5 15. Qxd5 Qc8 16. b3 Nb6 17. Nxb6 axb6 18. Ra2 Bb7 19. Qc4 Qc6 20. f3 Bf6 21. a4 Rad8 22. Nb5 g5 23. Bc1 Bd4+ 1/2-1/2