[Event "Hoogovens"]
[Site "Wijk aan Zee"]
[Date "1968.01.12"]
[Round "3"]
[White "Ivkov, Borislav"]
[Black "Ree, Hans"]
[Result "1/2-1/2"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nb5 d6 6. c4 Nf6 7. N1c3 a6 8. Na3 Be7 9. Be2 O-O 10. O-O Bd7 11. Be3 Na7 12. f3 Qb8 13. Qb3 Bc6 14. Nc2 b5 15. Nd4 b4 16. Nd1 a5 17. a3 Bd7 18. axb4 axb4 19. Nf2 Nc6 20. Nd3 Na5 21. Qxb4 Qxb4 22. Nxb4 d5 23. Rxa5 Rxa5 24. Nbc6 Bxc6 25. Nxc6 Bc5 26. Nxa5 Bxe3+ 27. Kh1 dxe4 28. b4 Ra8 29. Rd1 g5 30. g3 Bb6 31. Kg2 Ra7 32. Nb3 Ra3 33. Nd2 exf3+ 34. Nxf3 Ng4 35. c5 Ne3+ 36. Kg1 Bxc5 37. Rd8+ Bf8 38. Nxg5 Kg7 39. Rd7 Bxb4 40. Nxe6+ Kf6 1/2-1/2