[Event "San Antonio"]
[Site "San Antonio"]
[Date "1972.11.23"]
[Round "4"]
[White "Karpov, Anatoly"]
[Black "Campos Lopez, Mario"]
[Result "1-0"]
1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. Nf3 g6 5. Bc4 c6 6. O-O Bg7 7. exd6 Qxd6 8. h3 O-O 9. Bb3
Bf5 10. Re1 Re8 11. Nbd2 b5 12. a4 Nd7 13. c4 Nb4 14. c5 Qf6 15. Ne4 Bxe4 16. Rxe4 e5 17.
axb5 Rad8 18. Bg5 Qf5 19. Bxd8 Rxd8 20. Qe2 cxb5 21. Rxa7 Nc6 22. Rc7 Na5 23. Bd5 1-0