[Event "San Antonio"]
[Site "San Antonio"]
[Date "1972.11.20"]
[Round "2"]
[White "Portisch, Lajos"]
[Black "Suttles, Duncan"]
[Result "1/2-1/2"]

1. Nf3 g6 2. e4 Bg7 3. d4 d6 4. Be2 Nf6 5. Nc3 O-O 6. O-O Bg4 7. Be3 Nc6 8. Qd2 Bxf3 9. Bxf3 Nd7 10. Rad1 Nb6 11. Be2 e5 12. d5 Ne7 13. f3 f5 14. g3 Nd7 15. Rf2 Nf6 16. Bf1 Nh5 17. Ne2 fxe4 18. fxe4 Rxf2 19. Bxf2 Nf6 20. Bg2 Ng4 21. Bh3 Bh6 22. Qb4 a5 23. Qc4 Nxf2 24. Kxf2 Kh8 25. Kg2 Ng8 26. Rf1 Nf6 27. Rf3 Qe7 28. Nc3 Rf8 29. Be6 Bd2 30. Nd1 Bb4 31. Qe2 Bc5 32. h4 Kg7 33. Nf2 Bxf2 34. Rxf2 c5 35. a4 Qe8 36. b3 Qd8 37. Rf3 Qb6 38. g4 Qd8 39. Kh3 h6 40. Qe3 Nh7 1/2-1/2