[Event "USA-ch"]
[Site "Pasadena"]
[Date "1978.??.??"]
[Round "1"]
[White "Regan, Kenneth"]
[Black "Shamkovich, Leonid Alexandrovic"]
[Result "1-0"]
[WhiteElo "2430"]
[BlackElo "2485"]

1. e4 c5 2. Nf3 e6 3. c3 Nf6 4. e5 Nd5 5. d4 cxd4 6. cxd4 Nc6 7. Nc3 d6 8. Bd3 dxe5 9. dxe5 Nxc3 10. bxc3 Be7 11. O-O O-O 12. Qc2 g6 13. Bh6 Re8 14. h4 Bf8 15. Bxf8 Rxf8 16. h5 Qe7 17. Rae1 Bd7 18. Re4 Rfd8 19. Nh2 gxh5 20. Re3 Kh8 21. Qe2 Qg5 22. f4 Qg7 23. Rh3 Ne7 24. Rxh5 Nf5 25. Rg5 Qf8 26. Ng4 h6 27. Nxh6 Nxh6 28. Qe4 Nf5 29. Rf3 Qg7 30. Rh3+ Kg8 31. Rxg7+ Kxg7 32. Qxb7 Rab8 33. Qxa7 Ne7 34. f5 exf5 35. e6 1-0