[Event "Las Palmas-09"]
[Site "Las Palmas"]
[Date "1980.06.14"]
[Round "5"]
[White "Petrosian, Tigran V"]
[Black "Sosonko, Gennadi"]
[Result "1-0"]
[WhiteElo "2615"]
[BlackElo "2545"]
1. Nf3 c5 2. g3 d5 3. Bg2 Nc6 4. d4 Nf6 5. O-O Bg4 6. dxc5 e5 7. c4 Bxc5 8. cxd5 Qxd5 9.
Nc3 Qxd1 10. Rxd1 h6 11. Na4 Be7 12. Be3 e4 13. Nd4 Nxd4 14. Rxd4 Bxe2 15. Nc3 Bf3 16.
Nxe4 Bxg2 17. Kxg2 O-O 18. Rad1 a6 19. Nd6 Rfd8 20. Nf5 Kf8 21. Nxe7 Rxd4 22. Bxd4 Kxe7
23. Bc5+ Ke6 24. Rd6+ Kf5 25. Bd4 Rc8 26. Bxf6 gxf6 27. Rb6 Rc7 28. Kh3 Kg5 29. f4+ Kf5
30. Kh4 Kg6 31. Kg4 Rd7 32. f5+ Kg7 33. h4 Rd4+ 34. Kf3 Rd3+ 35. Kf4 Rd4+ 36. Ke3 Rd5 37.
Ke4 Re5+ 38. Kf4 Re7 39. h5 Rc7 40. Ke3 Rc5 41. g4 Re5+ 42. Kd4 Re2 43. Rxb7 Rg2 44. Kc5
Rxg4 45. b4 Rg5 46. a4 Rxf5+ 47. Kb6 Re5 48. Kxa6 f5 49. b5 f4 50. Rc7 1-0