[Event "Olympiad-23"]
[Site "Buenos Aires"]
[Date "1978.10.25"]
[Round "1"]
[White "Delgado, Alberto"]
[Black "Hartston, William R"]
[Result "0-1"]
[BlackElo "2475"]
1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nc3 a6 6. g3 d6 7. Bg2 Nge7 8. Nb3 Ng6 9. a4 Na5 10. Nxa5 Qxa5 11. f4 Be7 12. Be3 Bd7 13. Qd2 Rc8 14. O-O Qc7 15. Rf2 O-O 16. a5 f5 17. Bb6 Qb8 18. Re1 fxe4 19. Rxe4 Bf6 20. Bh3 Rfe8 21. Bd4 d5 22. Bxf6 dxe4 23. Qxd7 gxf6 24. Nxe4 Kh8 25. Nd6 Nf8 0-1