[Event "USA-ch"]
[Site "Chicago"]
[Date "1974.??.??"]
[Round "8"]
[White "Grefe, John Alan"]
[Black "Rogoff, Kenneth"]
[Result "1/2-1/2"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 d6 5. Bxc6+ bxc6 6. d4 exd4 7. Qxd4 c5 8. Qd3 Ne7 9. Nc3 f6 10. Bf4 Be6 11. O-O Ng6 12. Bg3 Be7 13. Nd5 O-O 14. Rfe1 Ne5 15. Qc3 Nxf3+ 16. Qxf3 Rf7 17. Rad1 Bf8 18. Qc3 Qb8 19. f4 f5 20. exf5 Bxf5 21. Bh4 Qb5 22. h3 Re8 23. Rxe8 Qxe8 24. Re1 Qa4 25. b3 Qd4+ 26. Qxd4 cxd4 27. Re2 h5 28. Bd8 c6 29. Ne7+ Bxe7 30. Bxe7 d3 1/2-1/2