[Event "Hoogovens"]
[Site "Wijk aan Zee"]
[Date "1980.01.19"]
[Round "4"]
[White "Kortschnoj, Viktor Lvovich"]
[Black "Biyiasas, Peter"]
[Result "1-0"]
[WhiteElo "2695"]
[BlackElo "2485"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. Bg5 O-O 5. Qd2 d6 6. e4 Nbd7 7. f3 e5 8. d5 h6 9. Be3 Nh7
10. O-O-O h5 11. Bd3 Ndf6 12. Nge2 Qe7 13. b4 a5 14. a3 axb4 15. axb4 Ne8 16. Kb2 f5 17.
Ra1 Rxa1 18. Rxa1 f4 19. Bf2 Qg5 20. Rg1 h4 21. h3 Qh5 22. Nc1 Ng5 23. Be2 Bf6 24. Nb3 Rf7
25. Ra1 b6 26. Ra8 Bd7 27. c5 bxc5 28. bxc5 Rf8 29. c6 Bxh3 30. gxh3 Nxh3 31. Qe1 Nxf2 32.
Qxf2 h3 33. Qh2 Kf7 34. Ra1 Rh8 35. Rh1 Ng7 36. Nd2 Qg5 37. Bf1 Rh4 38. Bxh3 Qh6 39. Qg2
Ke7 40. Nd1 Rh5 41. Kc2 Qh8 42. Qf1 Qa8 43. Nc3 1-0