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

1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. e3 Bb4 5. Qc2 O-O 6. Bd3 Bxc3 7. dxc3 d6 8. Nd2 h6 9. e4 Nd7 10. Nf1 Nc5 11. Ne3 a5 12. O-O Ne7 13. Bd2 Be6 14. Rae1 c6 15. b3 a4 16. b4 Nxd3 17. Qxd3 d5 18. cxd5 cxd5 19. exd5 Nxd5 20. Qc2 Qc7 21. Nxd5 Bxd5 22. Re3 Rfe8 23. Rg3 Re6 24. a3 Qc6 25. Re1 1/2-1/2