[Event "Olympiad-21 Final B"]
[Site "Nice"]
[Date "1974.06.28"]
[Round "13"]
[White "Estevez Morales, Guillermo"]
[Black "Zwaig, Arne"]
[Result "0-1"]

1. d4 f5 2. Nf3 g6 3. g3 Nf6 4. c4 Bg7 5. Bg2 O-O 6. Nc3 c6 7. O-O Ne4 8. Qc2 d5 9. Bf4 e6 10. Be5 Bh6 11. c5 Nd7 12. b4 g5 13. Ne1 Nxe5 14. dxe5 a5 15. Nd3 Nxc3 16. Qxc3 axb4 17. Nxb4 Rf7 18. Qd4 Bf8 19. Nd3 Ra3 20. Qb4 Qa5 21. Rfc1 Qxb4 22. Nxb4 Ra5 23. Nd3 b6 24. cxb6 c5 25. Rc2 c4 26. Rb1 Rb7 27. Ne1 Ra6 28. Nf3 g4 29. Nd4 Raxb6 30. Rxb6 Rxb6 31. h3 gxh3 32. Bf3 Bb7 33. a4 Bc5 34. Nb5 Bc6 35. Nc3 Bd4 36. a5 Ra6 37. g4 fxg4 38. Bxg4 Kf7 39. Na2 Rxa5 40. e3 Bxe5 0-1