[Event "IBM"]
[Site "Amsterdam"]
[Date "1970.07.27"]
[Round "11"]
[White "Langeweg, Kick"]
[Black "Ree, Hans"]
[Result "1/2-1/2"]

1. d4 Nf6 2. c4 g6 3. Nf3 Bg7 4. g3 O-O 5. Bg2 c5 6. O-O d6 7. Nc3 Nc6 8. d5 Na5 9. Nd2 e5 10. a3 b6 11. b4 Nb7 12. Bb2 Ne8 13. e3 f5 14. f4 Bd7 15. b5 Qe7 16. Qc2 Nf6 17. Rae1 Rae8 18. Nd1 exf4 19. gxf4 Ng4 20. h3 Bxb2 21. Qxb2 Nf6 22. Bf3 Qg7 23. Kh2 Re7 24. Rg1 Rfe8 25. Qc3 Kf7 26. Rg3 1/2-1/2