[Event "San Antonio"]
[Site "San Antonio"]
[Date "1972.11.30"]
[Round "9"]
[White "Portisch, Lajos"]
[Black "Karpov, Anatoly"]
[Result "1-0"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Bd3 O-O 6. Nf3 d5 7. O-O dxc4 8. Bxc4 Nbd7 9. Qe2 cxd4 10. exd4 b6 11. d5 Bxc3 12. dxe6 Bb4 13. exd7 Qxd7 14. a3 Bd6 15. Rd1 Qc7 16. h3 Bb7 17. Be3 Rae8 18. Rac1 Qb8 19. Bb5 Re7 20. Bc6 Bxc6 21. Rxc6 Bc5 22. Rxf6 gxf6 23. Nd4 Bxd4 24. Rxd4 Qe5 25. Qf3 Kh8 26. Rd5 1-0