[Event "Capablanca Memorial-01"]
[Site "Havana"]
[Date "1962.05.27"]
[Round "20"]
[White "De Greif, Boris"]
[Black "Ortega, Rogelio"]
[Result "1/2-1/2"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 d5 5. Ne2 O-O 6. a3 Be7 7. cxd5 exd5 8. Nf4 c6 9. g3 Nbd7 10. Bg2 Ne8 11. O-O Nb6 12. b3 f5 13. a4 a5 14. Ba3 Nf6 15. Bxe7 Qxe7 16. Nd3 g5 17. Ne5 Be6 18. f4 g4 19. Ne2 Rfc8 20. Qd3 Nbd7 21. Rfc1 Nb8 22. Qc3 Nbd7 23. Rab1 Ne8 24. b4 Nd6 25. bxa5 Ra7 26. Qa3 Nf6 27. Qb4 Rca8 28. Rc5 Qd8 29. Nc1 Rxa5 30. Rxa5 Rxa5 31. Nb3 Ra8 32. Nc5 Bc8 33. Qb6 Qe7 34. a5 Nc4 35. Nxc4 dxc4 36. e4 fxe4 37. Qb4 Nd5 38. Qxc4 Rxa5 39. Nxe4 Be6 1/2-1/2