[Event "IBM"]
[Site "Amsterdam"]
[Date "1967.??.??"]
[Round "5"]
[White "Ree, Hans"]
[Black "Langeweg, Kick"]
[Result "1/2-1/2"]

1. d4 Nf6 2. Nf3 d5 3. Bf4 g6 4. e3 Bg7 5. Be2 Nh5 6. Bg5 h6 7. Bh4 g5 8. Ne5 Nf6 9. Bg3 Ne4 10. O-O O-O 11. Nd2 Nxg3 12. hxg3 c5 13. c3 Qb6 14. Qc2 Nc6 15. Ndf3 Be6 16. a4 Rac8 17. Nxc6 Qxc6 18. Ne5 Qc7 19. f4 f5 20. Bd3 c4 21. Be2 g4 1/2-1/2