[Event "IBM"]
[Site "Amsterdam"]
[Date "1971.07.14"]
[Round "2"]
[White "Bobotsov, Milko Georgiev"]
[Black "Langeweg, Kick"]
[Result "1-0"]

1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. Nc3 Bb7 5. Bg5 h6 6. Bh4 Bb4 7. e3 g5 8. Bg3 Ne4 9. Qc2 d6 10. Bd3 Bxc3+ 11. bxc3 f5 12. d5 Nd7 13. Bxe4 fxe4 14. Qxe4 Qf6 15. O-O O-O-O 16. Qxe6 Qxe6 17. dxe6 Nc5 18. Nd4 Rde8 19. f3 Ba6 20. Nb5 Rxe6 21. e4 h5 22. Nxa7+ Kb7 23. Nb5 g4 24. Bf2 Nd3 25. Bd4 Rg8 26. Kh1 Nb2 27. a4 Nxc4 28. fxg4 Rxg4 29. Rf7 Bxb5 30. axb5 Rgxe4 31. h3 Rg6 32. Raf1 Nd2 33. R1f6 Re1+ 34. Kh2 Rg8 35. Rf2 Ne4 36. R2f4 Re2 37. Rg7 Rxg7 38. Bxg7 Re1 39. Bd4 Nd2 40. Kg3 Rb1 41. Rf5 Rb3 42. Rxh5 Ne4+ 43. Kf4 Nxc3 44. Bxc3 Rxc3 45. g4 c5 46. Rh7+ 1-0