[Event "San Antonio"]
[Site "San Antonio"]
[Date "1972.11.21"]
[Round "3"]
[White "Campos Lopez, Mario"]
[Black "Evans, Larry Melvyn"]
[Result "1/2-1/2"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 h6 8. Bxf6 Qxf6 9. Qd2 Nc6 10. Nf3 Qd8 11. O-O-O Be7 12. Kb1 b5 13. Nd4 Bd7 14. Nxc6 Bxc6 15. Bd3 Qb6 16. Rhf1 O-O-O 17. Ne2 Rd7 18. Ng3 Kb8 19. f5 Bf6 20. Nh5 Be5 21. fxe6 fxe6 22. Nf4 Re8 23. g3 g5 24. Ng6 Bg7 25. Qe2 Qc5 26. Rde1 Rc7 27. e5 dxe5 28. Nxe5 Bd5 29. Qe3 Qd6 30. Nf7 Qc6 31. Ne5 Qb7 32. Rf2 Ka8 33. Ref1 Rec8 34. h4 gxh4 35. gxh4 Qa7 36. Re2 Qxe3 37. Rxe3 Ka7 38. a3 Kb6 39. Kc1 Rf8 40. Rxf8 Bxf8 41. Be4 1/2-1/2