[Event "Interzonal-13b"]
[Site "Taxco"]
[Date "1985.07.01"]
[Round "15"]
[White "Speelman, Jonathan S"]
[Black "Sisniega, Marcel"]
[Result "1-0"]
[WhiteElo "2530"]
[BlackElo "2470"]

1. Nf3 Nf6 2. d4 g6 3. c4 Bg7 4. Nc3 d5 5. cxd5 Nxd5 6. e4 Nxc3 7. bxc3 c5 8. Bb5+ Bd7 9. Bxd7+ Qxd7 10. O-O O-O 11. Rb1 Nc6 12. Be3 Rac8 13. dxc5 Qc7 14. Qb3 Na5 15. Qb4 Rfd8 16. h3 Rd7 17. Rfd1 Rcd8 18. Rxd7 Rxd7 19. Nd4 a6 20. Qa4 e5 21. Nc2 f5 22. Nb4 f4 23. Nd5 Rxd5 24. exd5 fxe3 25. Qe8+ Bf8 26. fxe3 Qxc5 27. Qe6+ Kg7 28. Qxe5+ Kh6 29. Qf4+ Kg7 30. Rf1 Bd6 31. Qd4+ Qxd4 32. cxd4 Nc4 33. Kf2 Kf7 34. Ke2+ Ke7 35. e4 Ba3 36. e5 b5 37. Kd3 a5 38. Rf6 Nb2+ 39. Ke4 Nc4 40. Ra6 a4 41. Ra7+ Kf8 42. d6 1-0