[Event "San Antonio IT"]
[Round "4"]
[Site "San Antonio"]
[Date "1972"]
[White "Karpov, Anatoly"]
[WhiteElo "2630"]
[Black "Campos Lopez, Mario"]
[BlackElo "2200"]
[Result "1-0"]
[ECO "B04"]
[Opening "Alekhine's Defence, Modern Variation"]
 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