[Event "Las Palmas"]
[Site "Las Palmas ESP"]
[Date "1973.04.08"]
[EventDate "1973.04.02"]
[Round "6"]
[Result "1-0"]
[White "Ricardo Calvo"]
[Black "Lubomir Kavalek"]
[ECO "B96"]
[WhiteElo "2330"]
[BlackElo "2555"]
[PlyCount "47"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6
7. f4 Qc7 8. Qe2 Nbd7 9. O-O-O Be7 10. g4 h6 11. Bh4 g5
12. fxg5 Nh7 13. Nf5 exf5 14. Nd5 Qd8 15. exf5 Ne5 16. Bg3
Bxg5+ 17. Kb1 O-O 18. h4 Bf6 19. g5 hxg5 20. hxg5 Bxg5
21. Bxe5 dxe5 22. Qg4 Kg7 23. f6+ Kg8 24. Qe4 1-0