[Event "IBM"]
[Site "Amsterdam"]
[Date "1967.??.??"]
[Round "11"]
[White "Kotov, Alexander"]
[Black "Ree, Hans"]
[Result "1-0"]
1. d4 Nf6 2. c4 c5 3. d5 d6 4. Nc3 g6 5. e4 Bg7 6. Bd3 O-O 7. Nge2 e6 8. O-O exd5 9. cxd5 Ne8 10. Bf4 a6 11. a4 Nd7 12. Qd2 Ne5 13. Bg5 f6 14. Bh4 Bd7 15. f4 Nxd3 16. Qxd3 b5 17. axb5 axb5 18. f5 b4 19. Rxa8 Qxa8 20. Nd1 Bh6 21. Bg3 Qb7 22. Ne3 Bxe3+ 23. Qxe3 gxf5 24. Bxd6 Nxd6 25. Qg3+ Kf7 26. Qxd6 Bb5 27. Rxf5 Qe7 28. Qxe7+ Kxe7 29. Ng3 Ra8 30. Rh5 Ra1+ 31. Kf2 Ra2 32. Rxh7+ Kd8 33. Nh5 Rxb2+ 34. Ke3 b3 35. Rb7 Ba6 36. Rb6 Re2+ 37. Kf3 b2 38. d6 Rd2 39. Nxf6 Kc8 40. e5 Bc4 41. Kf4 Rxg2 42. d7+ Kc7 43. Rc6+ Kxc6 44. d8=Q Rf2+ 45. Kg5 Rxf6 46. Qxf6+ Kb5 47. Qg6 1-0