[Event "Capablanca Memorial-02"]
[Site "Havana"]
[Date "1963.09.16"]
[Round "16"]
[White "Calero, Ivan"]
[Black "De Greif, Boris"]
[Result "1/2-1/2"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. b4 Bxb4 5. c3 Be7 6. d4 Na5 7. Nxe5 Nxc4 8. Nxc4 d5 9. exd5 Qxd5 10. Ne3 Qd8 11. O-O Nf6 12. Ba3 O-O 13. Bxe7 Qxe7 14. Nd2 c6 15. Re1 Be6 16. Nf3 Qc7 17. Qd2 Qa5 18. Qb2 Rab8 19. a3 Nd5 20. Nxd5 Bxd5 21. Ne5 Qc7 22. Re3 f6 23. Nd3 Rbe8 24. Rae1 Rxe3 25. Rxe3 Qb6 26. Qc1 Bf7 27. h3 Re8 28. Nc5 Rxe3 29. fxe3 Qc7 30. Nd3 Qg3 31. Qe1 Qxe1+ 32. Nxe1 Bg6 33. Kf2 Kf7 34. Kf3 Ke6 35. e4 Kd6 36. Nc2 c5 37. Kf4 cxd4 38. cxd4 b5 39. g4 Bf7 40. Ke3 g5 41. Kd2 h5 42. Ne3 hxg4 43. Nf5+ Kd7 44. hxg4 Bg6 45. Ng3 a5 46. Kd3 Bf7 47. d5 Kd6 48. Kd4 Bg6 49. Nh5 Ke7 50. Kc5 b4 51. axb4 axb4 52. d6+ Ke6 53. Kxb4 Kxd6 54. Nxf6 Ke5 55. Nd7+ Kxe4 56. Nf8 1/2-1/2