[Event "Hoogovens"]
[Site "Wijk aan Zee"]
[Date "1969.01.28"]
[Round "12"]
[White "Portisch, Lajos"]
[Black "Botvinnik, Mikhail"]
[Result "1/2-1/2"]

1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. Nf3 Bg7 5. Qb3 c6 6. cxd5 Nxd5 7. e4 Nb6 8. Be3 O-O 9. Rd1 Bg4 10. Be2 Qc7 11. O-O N8d7 12. h3 Bxf3 13. Bxf3 Kh8 14. a4 Nc8 15. g3 e6 16. d5 Re8 17. dxe6 fxe6 18. Bg4 Nf8 19. Bc5 Qf7 20. Rd3 Nb6 21. Bxf8 Bxf8 22. a5 Nd7 23. Qxb7 Ne5 24. Qxf7 Nxf7 25. f4 h5 26. Bf3 Red8 27. Rfd1 e5 28. Rd7 Kg7 29. fxe5 Rxd7 30. Rxd7 Re8 31. Kg2 Bc5 32. Rc7 Rxe5 33. Rxc6 Bd4 34. b4 Re7 35. Nd5 Rb7 36. Rc7 Rxc7 37. Nxc7 Kf6 38. Nd5+ Ke6 39. Nf4+ Kf6 40. Nd5+ Ke6 41. Nf4+ Kf6 42. Bd1 Nd6 43. Kf3 g5 44. Ne2 Bb2 45. Ke3 Ke5 46. Bc2 Nc4+ 47. Kd3 Nd6 48. Nc3 Ba3 49. b5 Bb4 50. b6 a6 51. Nd5 Bxa5 52. Ke2 Nb7 53. Bd3 Nc5 54. Ke3 Be1 55. g4 hxg4 56. hxg4 Ba5 57. Bc2 Be1 58. Kf3 Ba5 59. Ba4 Kd6 60. Be8 Nb7 61. Ke3 Be1 62. Bf7 Nc5 63. Kf3 Ba5 64. Bg8 Nb7 65. Ke2 Nc5 66. Ke3 Be1 67. Kf3 Ba5 68. Bf7 Nb7 69. Ne3 Bxb6 70. Nc4+ Kc7 71. Nxb6 Kxb6 72. e5 Nd8 73. Ba2 Nc6 74. Ke4 Ne7 75. e6 Kc5 76. Ke5 a5 77. Kf6 Kd6 78. Kxg5 Ke5 79. Bb3 a4 80. Ba2 a3 81. Bb3 Nc6 82. Kg6 Ne7+ 83. Kg7 Nc6 84. g5 Kf5 85. Kh6 Ne7 86. Ba2 Ke5 87. Kg7 Kf5 88. Kf7 Ng6 1/2-1/2