[Event "IBM"]
[Site "Amsterdam"]
[Date "1972.??.??"]
[Round "?"]
[White "Polugaevsky, Lev"]
[Black "Ivkov, Borislav"]
[Result "1-0"]

1. Nf3 d5 2. c4 e6 3. g3 Nf6 4. Bg2 Be7 5. O-O O-O 6. d4 dxc4 7. Qc2 a6 8. a4 c5 9. dxc5
Bxc5 10. Nbd2 Nc6 11. Nxc4 Qe7 12. Nfe5 Nd4 13. Qd1 Rd8 14. e3 Nf5 15. Qb3 Qc7 16. Nd3 Rb8
17. Bd2 b6 18. Nxc5 bxc5 19. Qa3 Qa7 20. Ba5 Re8 21. Qd3 Bb7 22. e4 Qa8 23. Rfe1 Nd4 24.
Bc7 Bc6 25. Bxb8 Rxb8 26. Rac1 Bxa4 27. e5 Nd5 28. Nd6 Qa7 29. Qc4 Qd7 30. Qxc5 Nb3 31.
Qc8+ Qd8 32. Qxb8 Qxb8 33. Rc8+ Qxc8 34. Nxc8 Kf8 35. Rd1 Bc6 36. Nb6 Nxb6 37. Bxc6 Na5
38. Rd8+ 1-0