[Event "IBM"]
[Site "Amsterdam"]
[Date "1970.07.18"]
[Round "5"]
[White "Donner, Jan Hein"]
[Black "Janosevic, Dragoljub"]
[Result "1/2-1/2"]

1. d4 Nf6 2. c4 c5 3. d5 d6 4. Nc3 g6 5. e4 Bg7 6. Be2 e6 7. Nf3 exd5 8. cxd5 O-O 9. O-O Re8 10. Nd2 Na6 11. f3 Nc7 12. a4 b6 13. Nc4 Ba6 14. Na3 Bxe2 15. Nxe2 Nd7 16. Kh1 Ne5 17. Nc3 f5 18. Nab5 a6 19. Nxc7 Qxc7 20. f4 Ng4 21. exf5 gxf5 22. Qd3 Re1 23. Qf3 Qe7 24. Bd2 Qh4 25. h3 Rxa1 26. Rxa1 Re8 27. Rf1 Bd4 28. Nd1 Nf6 29. Qd3 Ne4 30. Be1 Qh5 31. Nc3 1/2-1/2