[Event "Marlboro Chess Classic"]
[Site "Manila"]
[Date "1979.06.19"]
[Round "5"]
[White "Yap, Andronico"]
[Black "Olafsson, Fridrik"]
[Result "0-1"]

1. e4 c5 2. Nf3 e6 3. c3 d5 4. exd5 exd5 5. d4 a6 6. Be2 Nc6 7. O-O Bd6 8. Bg5 f6 9. dxc5 Bxc5 10. Bf4 Nge7 11. Nbd2 Ng6 12. Bg3 f5 13. Nb3 Be7 14. h4 f4 15. Bh2 O-O 16. h5 Nge5 17. Qd2 Nc4 18. Qc1 Bd6 19. Rd1 Qe7 20. Qc2 Bf5 21. Bd3 Qf6 22. Nbd4 Bxd3 23. Rxd3 Rae8 24. Rdd1 Qf7 25. b3 N4e5 26. h6 gxh6 27. Nh4 Nxd4 28. Rxd4 Ng4 29. Qd1 Qh5 30. Nf3 Rf5 31. b4 Kh8 32. Qd2 Nxh2 33. Nxh2 f3 34. Nf1 fxg2 35. Kxg2 Qf3+ 36. Kg1 Rg8+ 37. Ng3 Bxg3 38. Rg4 Bxf2+ 39. Kh2 Qxg4 40. Qd4+ Bxd4 0-1