[Event "IBM"]
[Site "Amsterdam"]
[Date "1968.??.??"]
[Round "2"]
[White "Kotov, Alexander"]
[Black "Langeweg, Kick"]
[Result "1/2-1/2"]

1. c4 Nf6 2. Nc3 e6 3. Nf3 Bb4 4. e3 O-O 5. Bd3 b6 6. a3 Bxc3 7. dxc3 d5 8. cxd5 exd5 9. O-O Ba6 10. Bxa6 Nxa6 11. b4 c6 12. Qd3 b5 13. a4 Nc7 14. Nd4 Qd7 15. f3 Rfe8 16. axb5 cxb5 17. Bd2 a6 18. Ra2 Ne6 19. Nb3 Qc6 20. Rfa1 Nd7 21. Na5 Qd6 22. c4 bxc4 23. Nxc4 Qc6 24. Nb2 Ne5 25. Qf1 Nc7 26. Qc1 Qg6 27. Kh1 Nb5 28. Na4 Rac8 29. Qb1 Qxb1+ 30. Rxb1 Nc4 1/2-1/2