[Event "Hoogovens"]
[Site "Wijk aan Zee"]
[Date "1972.01.20"]
[Round "8"]
[White "Ivkov, Borislav"]
[Black "Ree, Hans"]
[Result "1/2-1/2"]
1. d4 Nf6 2. c4 g6 3. g3 Bg7 4. Bg2 O-O 5. Nc3 c5 6. d5 d6 7. Nf3 e6 8. O-O exd5 9. cxd5 a6 10. a4 Nbd7 11. h3 Rb8 12. a5 Re8 13. Nd2 b5 14. axb6 Nxb6 15. Ra2 Qc7 16. b3 Nh5 17. Bb2 f5 18. Na4 Nxa4 19. Bxg7 Qxg7 20. Rxa4 Bd7 21. Ra2 Bb5 22. Nc4 Qf8 23. Qd2 Nf6 24. Qf4 Rbd8 25. Re1 1/2-1/2