[Event "USA-ch"]
[Site "Berkeley"]
[Date "1984.??.??"]
[Round "5"]
[White "Christiansen, Larry Mark"]
[Black "De Firmian, Nick E"]
[Result "1/2-1/2"]
[WhiteElo "2550"]
[BlackElo "2515"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Bd3 Nc6 6. Nf3 Bxc3+ 7. bxc3 d6 8. O-O e5 9. Ng5 O-O 10. f4 exd4 11. cxd4 cxd4 12. exd4 Nxd4 13. Nxh7 Nxh7 14. Bxh7+ Kxh7 15. Qxd4 Qb6 16. Qxb6 axb6 17. Rd1 Rd8 18. Be3 Be6 19. Bxb6 Rdc8 20. Rxd6 Rxc4 21. Bd4 Rca4 22. h3 1/2-1/2