[Event "IBM"]
[Site "Amsterdam"]
[Date "1972.??.??"]
[Round "?"]
[White "Ree, Hans"]
[Black "Enklaar, Bert F"]
[Result "1/2-1/2"]

1. c4 Nf6 2. g3 e6 3. Bg2 d5 4. Nf3 dxc4 5. Qa4+ Nbd7 6. Qxc4 a6 7. Qc2 c5 8. O-O b6 9. b3 Bb7 10. Bb2 Be7 11. d3 O-O 12. Nbd2 Rc8 13. Rac1 b5 14. Qb1 Qb6 15. Qa1 Rfd8 16. Rfd1 Bf8 17. h3 1/2-1/2