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

1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. c3 d5 5. exd5 Qxd5 6. cxd4 Bg4 7. Be2 Bb4+ 8. Nc3 Bxf3 9. Bxf3 Qc4 10. Qb3 Qxb3 11. axb3 Nge7 12. O-O a6 13. Ra4 Bd6 14. Bg5 f6 15. Bh5+ Ng6 16. Re1+ Ne7 17. Bd2 O-O-O 18. g3 Kb8 19. Ne4 Nd5 20. Ra5 Bb4 21. Bxb4 1/2-1/2