[Event "Las Palmas-03"]
[Site "Las Palmas"]
[Date "1974.??.??"]
[Round "4"]
[White "Hartston, William R"]
[Black "Olafsson, Fridrik"]
[Result "0-1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 d6 5. Bxc6+ bxc6 6. d4 exd4 7. Qxd4 c5 8. Qd3 Ne7 9. Nc3 Bb7 10. Bd2 Qd7 11. O-O Ng6 12. Nd5 Be7 13. Bc3 O-O 14. Nd2 Rae8 15. Rfe1 Bd8 16. Rad1 f5 17. exf5 Rxe1+ 18. Rxe1 Rxf5 19. Ne3 Rf8 20. Qc4+ Kh8 21. Ndf1 Qc6 22. Qe6 Bf6 23. f3 Bd4 24. Bxd4 cxd4 25. Nf5 Qc5 26. N1g3 Bc8 0-1