[Event "IBM"]
[Site "Amsterdam"]
[Date "1966.08.01"]
[Round "7"]
[White "Barendregt, Johan"]
[Black "Botvinnik, Mikhail"]
[Result "1-0"]

1. e4 c6 2. Ne2 d5 3. e5 c5 4. d4 Nc6 5. c3 Bg4 6. f3 Bd7 7. e6 Bxe6 8. dxc5 Nf6 9. b4 g6 10. Bf4 Bg7 11. Nd4 O-O 12. Nxc6 bxc6 13. Be5 Bh6 14. Bd3 Nd7 15. Bd4 f6 16. O-O Bf7 17. a4 e5 18. Bf2 f5 19. Ba6 Qc7 20. Nd2 Rab8 21. Rb1 Rfd8 22. Qc2 Bf8 23. f4 exf4 24. Bh4 h6 25. Bxd8 Rxd8 26. Nb3 Nf6 27. Qc1 g5 28. Nd4 Ng4 29. Bd3 Bg7 30. Bxf5 Ne3 31. Bc2 Nxf1 32. Qxf1 Re8 33. Re1 Rxe1 34. Qxe1 a5 35. Nf5 Bf8 36. Qe2 Kh8 37. Qd2 Kg8 38. Qd4 Qd8 39. Qe5 d4 40. Qxd4 Qe8 41. Qe4 1-0