[Event "IBM"]
[Site "Amsterdam"]
[Date "1961.??.??"]
[Round "2"]
[White "Bernstein, Ossip Samuel"]
[Black "Crabbendam, Henrico"]
[Result "1/2-1/2"]

1. e4 c5 2. Nf3 Nf6 3. Nc3 d5 4. exd5 Nxd5 5. Bb5+ Bd7 6. Ne5 Bxb5 7. Qf3 f6 8. Nxb5 Na6 9. Nc4 Qd7 10. Nbd6+ exd6 11. Qxd5 Nb4 12. Qh5+ g6 13. Qe2+ Kf7 14. O-O Re8 15. Qd1 d5 16. Ne3 d4 17. Nc4 d3 18. cxd3 Nxd3 19. a4 Re4 20. Ne3 Bd6 21. Ra3 Nxc1 22. Qxc1 Rh4 23. f4 Re8 24. Qc4+ Qe6 25. Rb3 b6 26. g3 Rh5 27. a5 bxa5 28. Rb7+ Re7 29. Qxe6+ Kxe6 30. f5+ gxf5 31. Rxe7+ Bxe7 32. Kg2 Rg5 33. h4 Rg8 34. Nxf5 Rb8 35. g4 Bf8 36. Re1+ Kf7 37. Rb1 a4 38. Ra1 Rxb2 39. Rxa4 Rxd2+ 40. Kf3 Rd7 41. Ke4 Kg6 42. Ra6 h6 43. Rc6 Rb7 44. Rc8 Kf7 45. Kd5 Rb4 46. h5 Rxg4 47. Rc7+ Kg8 48. Ke6 Rg5 49. Kxf6 Rxh5 50. Rc8 Rxf5+ 51. Kxf5 1/2-1/2