[Event "Sarajevo-07"]
[Site "Sarajevo"]
[Date "1964.03.26"]
[Round "4"]
[White "Ivkov, Borislav"]
[Black "Polugaevsky, Lev"]
[Result "1/2-1/2"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 Nbd7 7. Bc4 Qc7 8. Bb3 g6 9. Qd2 h6 10. Be3 Bg7 11. f3 Nb6 12. O-O Bd7 13. h3 Rc8 14. Nde2 Nc4 15. Bxc4 Qxc4 16. Nf4 Qc7 17. Rf2 Bc6 18. a4 O-O 19. a5 e6 20. Bb6 Qe7 21. Rd1 Nd7 22. Bd4 Nf6 23. Bb6 Nd7 24. Bd4 Nf6 25. Bb6 1/2-1/2