[Event "Olympiad-21 Preliminaries B"]
[Site "Nice"]
[Date "1974.06.10"]
[Round "4"]
[White "Verduga Zavala, Denis"]
[Black "Piasetski, Leon David"]
[Result "0-1"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nb5 d6 6. Bf4 e5 7. Be3 Nf6 8. Bg5 Be6 9. Nd2 Be7 10. Nc4 Nxe4 11. Bxe7 Qxe7 12. Ncxd6+ Nxd6 13. Qxd6 Qxd6 14. Nxd6+ Ke7 15. O-O-O Rhd8 16. Nxb7 Rxd1+ 17. Kxd1 Rb8 18. Nc5 Rxb2 19. Nxe6 fxe6 20. Kc1 Rxa2 21. Kb1 Ra4 22. c3 Rf4 23. f3 e4 24. fxe4 Rf2 25. Bb5 Ne5 26. Rg1 a5 27. h3 h5 28. g3 g5 29. Ba4 Nf3 30. Rd1 Nd2+ 31. Kc1 Nxe4 32. Re1 Nxc3 33. Bb3 Re2 34. Rxe2 Nxe2+ 0-1