[Event "CalChess Class-ch op"]
[Site "Berkeley"]
[Date "1977.??.??"]
[Round "5"]
[White "Christiansen, Larry Mark"]
[Black "Siff, Boris"]
[Result "1-0"]
[WhiteElo "2460"]

1. Nf3 Nf6 2. c4 c5 3. Nc3 Nc6 4. e3 e6 5. d4 d5 6. a3 dxc4 7. Bxc4 a6 8. Bd3 b5 9. dxc5 Bxc5 10. b4 Bd6 11. Bb2 Ne5 12. Nxe5 Bxe5 13. Qe2 O-O 14. f4 Bc7 15. Rd1 Qe7 16. O-O Bb7 17. e4 e5 18. Nd5 Nxd5 19. exd5 Bxd5 20. fxe5 Bc4 21. Bxc4 bxc4 22. Qxc4 Bxe5 23. Bxe5 Qxe5 24. Rd7 Ra7 25. Qxf7+ 1-0