[Event "Torneo de las Americas 1st"]
[Site "Bogota COL"]
[Date "1958.02.04"]
[EventDate "1958.01.20"]
[Round "11"]
[Result "1/2-1/2"]
[White "Humerez Estrada, Cidar"]
[Black "De Greif, Boris"]
[ECO "B28"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "100"]

1. e4 c5 2. Nf3 a6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e5 6. Nb3 Bb4 7. Bg5 h6 8.  Bxf6 Bxc3+ 9. bxc3 Qxf6 10. c4 d6 11. Bd3 O-O 12. O-O a5 13. Qd2 a4 14. Nc1 Na6  15. Ne2 Bd7 16. Nc3 Bc6 17. Rad1 Nc5 18. Qe3 Qg5 19. Qxg5 hxg5 20. f3 a3 21.  Be2 Rfd8 22. Rd2 Kf8 23. Rb1 Ke7 24. Kf2 Rh8 25. Kg1 g6 26. Nd5+ Bxd5 27. Rxd5  Ra6 28. Bd3 Rc8 29. c3 Rcc6 30. Bc2 Rab6 31. Rdd1 Rxb1 32. Rxb1 Kd7 33. Kf2 Kc7  34. Ke3 Rb6 35. Rxb6 Kxb6 36. g3 Kc7 37. Ke2 Kd7 38. Ke3 Ke6 39. Ke2 Kf6 40.  Ke3 Ke6 41. Ke2 f5 42. Ke3 Kf6 43. g4 fxg4 44. fxg4 Ke7 45. Kd2 Kd7 46. Ke3 Kc6  47. Kd2 Nd7 48. Ke2 Nc5 49. Kd2 Kb6 50. Ke3 1/2-1/2