[Event "Rovinj/Zagreb"]
[Site "Zagreb"]
[Date "1970.04.12"]
[Round "1"]
[White "Ivkov, Borislav"]
[Black "Bertok, Mario"]
[Result "1/2-1/2"]

1. d4 Nf6 2. c4 e6 3. Nc3 d5 4. Bg5 Be7 5. Nf3 b6 6. e3 h6 7. Bh4 O-O 8. Bd3 Bb7 9. O-O Nbd7 10. Qe2 c5 11. Rfd1 a6 12. cxd5 Nxd5 13. Bg3 cxd4 14. Nxd5 Bxd5 15. Nxd4 Nc5 16. Bc2 Qe8 17. Nf5 exf5 18. Rxd5 g6 19. Rad1 Qc6 20. Bd6 Rfe8 21. Qc4 Qc8 22. Bxe7 Rxe7 23. Qh4 Qf8 24. Rd6 Re6 25. Rxe6 Nxe6 26. Bb3 Rd8 27. Rxd8 Qxd8 28. Qxh6 Qd2 29. h4 Qxb2 30. h5 Qa1+ 31. Kh2 Qg7 32. Qxg7+ Kxg7 33. hxg6 Kxg6 34. Kg3 1/2-1/2