[Event "IBM"]
[Site "Amsterdam"]
[Date "1972.??.??"]
[Round "?"]
[White "Polugaevsky, Lev"]
[Black "Langeweg, Kick"]
[Result "1-0"]
1. Nf3 Nf6 2. g3 d5 3. Bg2 c6 4. b3 Bf5 5. Bb2 h6 6. d3 e6 7. O-O Be7 8. Nbd2 O-O 9. Qe1
Bh7 10. e4 a5 11. a3 Na6 12. Qe2 Nc5 13. e5 Nfd7 14. Nd4 Qb6 15. a4 Na6 16. Bh3 Nc7 17.
Kh1 Qa6 18. f4 c5 19. N4f3 b5 20. axb5 Qxb5 21. Nb1 Qc6 22. Nc3 Ra7 23. Bg2 Nb6 24. Na4
Nca8 25. Bc3 Qb5 26. Rfb1 Nxa4 27. Rxa4 Nb6 28. Raa1 Rfa8 29. Qe1 Nd7 30. Bd2 Qb6 31. g4
Nb8 32. Qg3 Nc6 33. f5 Nb4 34. Ne1 Qd8 35. Qf2 Rc7 36. c4 Bh4 37. Qe2 Bxe1 38. Bxe1 dxc4
39. Bxa8 Qxa8+ 40. Qg2 Qa7 41. dxc4 exf5 42. Rd1 Bg6 43. Rd8+ Kh7 44. g5 h5 45. Ra8 Qb7
46. Qxb7 Rxb7 47. R1xa5 f4 48. R8a7 Rb8 49. Bxb4 cxb4 50. Kg1 1-0