[Event "Olympiad-16 Preliminaries B"]
[Site "Tel Aviv"]
[Date "1964.11.06"]
[Round "4"]
[White "Zegada, Juan"]
[Black "Udovcic, Mijo"]
[Result "0-1"]
1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 d5 5. e3 O-O 6. a3 Bxc3+ 7. bxc3 b6 8. Nf3 Ba6 9. Nd2 Nc6 10. e4 Na5 11. e5 Ne8 12. Bd3 f5 13. cxd5 Bxd3 14. Qxd3 Qxd5 15. O-O c5 16. Nf3 Nc7 17. a4 Rfd8 18. Be3 Rac8 19. Rfd1 c4 20. Qe2 Qd7 21. Nd2 Nd5 22. Nb1 Nb3 23. Ra2 a6 24. Bc1 b5 25. axb5 axb5 26. Ra6 Qb7 27. Ra2 b4 28. Rc2 Nxc3 29. Nxc3 Nxd4 30. Rxd4 Rxd4 31. Nb1 c3 32. Be3 Rdc4 33. Qd3 Qc7 34. Qf1 b3 35. Qxc4 Qxc4 36. Rxc3 Qxc3 37. Nxc3 Rxc3 0-1