[Event "Bugojno IT"]
[Round "4"]
[Site "Bugojno"]
[Date "1978"]
[White "Ivkov, Borislav"]
[WhiteElo "2515"]
[Black "Timman, Jan H"]
[BlackElo "2585"]
[Result "1-0"]
[ECO "D99"]
[Opening "Gruenfeld Defence, Smyslov, Main line"]
 1. d4   Nf6
 2. c4   g6
 3. Nc3  d5
 4. Nf3  Bg7
 5. Qb3  dxc4
 6. Qxc4 O-O
 7. e4   Bg4
 8. Be3  Nfd7
 9. Qb3  Nb6
10. Rd1  Nc6
11. d5   Ne5
12. Be2  Nxf3+
13. gxf3 Bh5
14. Rg1  Qb8
15. f4   Bxe2
16. Nxe2 c6
17. dxc6 bxc6
18. h4   Rd8
19. Rxd8+ Qxd8
20. h5   Rb8
21. hxg6 hxg6
22. Rxg6 Nd5
23. Rxg7+ Kxg7
24. Bd4+ Nf6
25. Qc3  Qh8
26. Ng3  Kf8
27. Bxa7 Rb7
28. Bd4  Rd7
29. Be5  Qh4
30. Qxc6 Rd8
31. Qc7  Ke8
32. Qc6+ Kf8
33. Qb6  Ke8
34. Bc7  Nd7
35. Qb7  e6
36. Bxd8 Kxd8
37. Qa8+ Ke7
38. Qa3+ Ke8
39. Qa8+ Ke7
40. Qa3+ 
1-0