[Event "Capablanca Memorial-03"]
[Site "Havana"]
[Date "1964.08.26"]
[Round "1"]
[White "Udovcic, Mijo"]
[Black "Donner, Jan Hein"]
[Result "1/2-1/2"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 O-O 5. a3 Bxc3+ 6. Qxc3 b6 7. Nf3 Bb7 8. g3 c5 9. Bg2 cxd4 10. Qxd4 Nc6 11. Qc3 Rc8 12. b4 d5 13. cxd5 Qxd5 14. O-O Na5 15. Qb2 Nc4 16. Qb3 Nd6 17. Qxd5 Nxd5 18. Bf4 Nxf4 19. gxf4 Nb5 20. e3 Rfd8 21. a4 Nc3 22. Nd4 Bxg2 23. Kxg2 Rc4 24. Rfc1 Rdc8 25. b5 Nxa4 26. Rxc4 Rxc4 27. Nc6 h6 28. Ne5 Rb4 29. Nc6 Rc4 30. Ne5 Re4 31. Rc1 Nc5 32. Nc4 Nb3 33. Rc3 Na5 34. Nd6 Rb4 35. Rc8+ Kh7 36. Rc7 Kg6 37. Rxa7 Nc4 38. Nxc4 Rxc4 39. Rb7 Rb4 40. Rxb6 Kf5 41. Kf3 g5 42. fxg5 hxg5 43. h3 Ke5 44. Rb8 f5 45. b6 g4+ 46. hxg4 Rxg4 47. b7 Rb4 48. Kg3 Rg4+ 49. Kf3 Rb4 50. Ke2 Rb2+ 51. Kf3 Rb4 52. Kg3 Ke4 53. Re8 f4+ 54. exf4 Rxb7 55. Rxe6+ Kf5 56. Re5+ Kf6 57. Ra5 Rb1 1/2-1/2