[Event "Interzonal-13a"]
[Site "Tunis"]
[Date "1985.04.29"]
[Round "3"]
[White "Zapata, Alonso"]
[Black "Ermenkov, Evgenij"]
[Result "1/2-1/2"]
[WhiteElo "2535"]
[BlackElo "2515"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e6 6. f4 a6 7. Be2 Be7 8. O-O O-O 9. Kh1 Qc7 10. Qe1 b5 11. Bf3 Bb7 12. e5 Ne8 13. f5 dxe5 14. fxe6 Bxf3 15. exf7+ Rxf7 16. Nxf3 Nd7 17. Bg5 Bf8 18. Rf2 Nd6 19. Bh4 Re8 20. Rd1 e4 21. Nd4 Rxf2 22. Qxf2 Ne5 23. Nf5 Nec4 24. Bg3 Qf7 25. Nxd6 Qxf2 26. Bxf2 Bxd6 27. b3 e3 28. Bg1 Bb4 29. Ne2 Nd2 30. c3 Bc5 31. Ng3 Ne4 32. Nxe4 Rxe4 33. Re1 g5 34. g3 g4 35. Kg2 a5 36. Kf1 e2+ 1/2-1/2