[Event "USA-ch"]
[Site "Mentor"]
[Date "1977.10.07"]
[Round "13"]
[White "Peters, Jack"]
[Black "Grefe, John Alan"]
[Result "1/2-1/2"]
[WhiteElo "2370"]
[BlackElo "2425"]

1. e4 c5 2. Nf3 d6 3. Bb5+ Nc6 4. O-O Bd7 5. c3 a6 6. Ba4 b5 7. Bc2 Bg4 8. h3 Bxf3 9. Qxf3 g6 10. d3 Bg7 11. Be3 Nf6 12. d4 cxd4 13. cxd4 Rc8 14. Nc3 O-O 15. Rfd1 Nd7 16. Rac1 Na5 17. Bd3 Nc6 18. Bb1 b4 19. Ne2 Qb6 20. Qg4 Qb7 21. f4 Na5 22. Bd3 Rxc1 23. Rxc1 Rc8 24. Qg5 Rxc1+ 25. Nxc1 Qb6 26. Qd5 e6 27. Qa8+ Nb8 28. Kh1 b3 29. Nxb3 Nxb3 30. axb3 Qxb3 31. f5 Bf8 32. fxe6 fxe6 33. Bc4 1/2-1/2