[Event "Zagreb Peace"]
[Site "Zagreb"]
[Date "1965.05.05"]
[Round "17"]
[White "Udovcic, Mijo"]
[Black "Portisch, Lajos"]
[Result "1/2-1/2"]

1. c4 e6 2. d4 Nf6 3. Nf3 c5 4. e3 d5 5. Nc3 Nc6 6. cxd5 exd5 7. dxc5 Bxc5 8. Be2 O-O 9. O-O Be6 10. b3 Qe7 11. Bb2 Rad8 12. Nb5 Ne4 13. Nbd4 Rc8 14. Rc1 Bd6 15. Nxc6 bxc6 16. Bd3 Bg4 17. Bxe4 Qxe4 18. Qd4 Qxd4 19. Nxd4 c5 20. Nf3 Rfd8 21. h3 Be6 22. Rfd1 f6 23. Ba3 a5 24. Rd2 a4 25. Rdc2 axb3 26. axb3 d4 1/2-1/2