[Event "IBM"]
[Site "Amsterdam"]
[Date "1970.07.14"]
[Round "1"]
[White "Ciric, Dragoljub M"]
[Black "Ree, Hans"]
[Result "1/2-1/2"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Re1 b5 7. Bb3 d6 8. c3 O-O 9. h3 Na5 10. Bc2 c5 11. d4 Nd7 12. Nbd2 cxd4 13. cxd4 Nc6 14. d5 Nb4 15. Bb1 a5 16. Nf1 Nb6 17. Ng3 g6 18. Bh6 Re8 19. b3 Na6 20. Qd2 Nc5 21. Bc2 b4 22. Nh2 Bf8 23. Bxf8 1/2-1/2