[Event "IBM"]
[Site "Amsterdam"]
[Date "1961.??.??"]
[Round "6"]
[White "Bernstein, Ossip Samuel"]
[Black "Tan, Hiong Liong"]
[Result "1/2-1/2"]

1. e4 c5 2. Nf3 e6 3. Nc3 a6 4. d4 cxd4 5. Nxd4 b5 6. Bd3 Bb7 7. a4 bxa4 8. Rxa4 d6 9. O-O Nf6 10. f4 Nfd7 11. Rb4 Nc5 12. Be3 Qc7 13. Qg4 Nbd7 14. f5 Nf6 15. Qe2 e5 16. Nb3 Nxd3 17. cxd3 d5 18. Bb6 Qc8 19. Ra4 Qb8 20. Bc5 Bc6 21. Bxf8 Kxf8 22. Ra3 d4 23. Nb1 Ke7 24. Na5 Rc8 25. Nc4 Bb5 26. Nbd2 Kf8 27. Qe1 Ra7 28. b3 Nd7 29. Nf3 Bxc4 30. bxc4 Rc6 31. Qg3 Rb7 32. h3 Rb2 33. Kh2 f6 34. Rfa1 Nc5 35. Qh4 Kg8 36. Qe1 g6 37. fxg6 hxg6 38. Qg3 Kh7 39. Rf1 Qc7 40. Nh4 Qg7 41. Rf3 Ne6 42. Rf2 Rb1 43. Rfa2 Nc5 44. Qg4 Rcb6 45. Qc8 Qh6 46. Qc7+ Kg8 47. Qd8+ Kh7 48. Qe7+ Kg8 49. Qe8+ Kg7 50. Qe7+ Kg8 51. Nxg6 Qxg6 52. Qxc5 R6b2 53. Qc8+ Kf7 54. Rxb2 Rxb2 55. Qg4 Qxg4 56. hxg4 Kg6 57. Kh3 Kg5 58. Kg3 Rd2 59. Kf3 a5 60. c5 a4 61. Kg3 Rc2 62. Rxa4 Rxc5 63. Ra8 Kg6 64. g5 Kxg5 65. Rg8+ Kh5 66. Kf3 Rc3 67. g4+ Kh6 68. g5+ fxg5 69. Kg4 Rxd3 70. Re8 Rd1 71. Re6+ Kg7 72. Rxe5 Rg1+ 73. Kf3 1/2-1/2