[Event "Christmas op"] [Site "Toronto CAN"] [Date "1982.12.26"] [Round "?"] [White "Van Leusden, Jacques"] [Black "Petrenco, O."] [Result "1-0"] [WhiteElo "1972"] [BlackElo "1983"] [ECO "B28"] [EventDate "1982.12.26"] [PlyCount "81"] [EventType "swiss"] [EventRounds "6"] [EventCountry "CAN"] 1. e4 c5 2. Nf3 a6 3. c4 d6 4. d4 Bg4 5. d5 g6 6. Nc3 Bg7 7. h3 Bxf3 8. Qxf3 Nd7 9. Be2 e5 10. dxe6 fxe6 11. O-O Nh6 12. Qg3 Nf7 13. f4 Bd4+ 14. Be3 Nf6 15. Bd3 e5 16. Bxd4 cxd4 17. Nd5 Nxd5 18. exd5 Qe7 19. Rae1 O-O-O 20. c5 dxc5 21. fxe5 Rhe8 22. Qg4+ Kb8 23. d6 Nxd6 24. exd6 Qxd6 25. Qh4 Qc7 26. b3 b5 27. Qf6 Ka7 28. a4 Re3 29. Rxe3 dxe3 30. axb5 axb5 31. Ra1+ Kb8 32. Be4 Qd6 33. Ra8+ Kc7 34. Qf7+ Rd7 35. Ra7+ Kd8 36. Qg8+ Ke7 37. Qxh7+ Ke6 38. Qxg6+ Ke5 39. Qf5+ Kd4 40. Rxd7 Qxd7 41. Qxd7+ 1-0