[Event "IBM"]
[Site "Amsterdam"]
[Date "1970.07.29"]
[Round "13"]
[White "Geller, Efim P"]
[Black "Langeweg, Kick"]
[Result "1-0"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. g3 O-O 5. Bg2 d6 6. Nf3 c5 7. O-O Nc6 8. d5 Na5 9. Nd2 e5
10. e4 Ne8 11. b3 f5 12. exf5 gxf5 13. Bb2 Nf6 14. Qc2 Bd7 15. Rae1 a6 16. Nd1 b5 17. Ne3
Nh5 18. Bf3 Qg5 19. Bxh5 Qxh5 20. f4 b4 21. fxe5 dxe5 22. Ng2 Rae8 23. Nf3 f4 24. gxf4
exf4 25. Bxg7 Kxg7 26. Rxe8 Bxe8 27. Qe4 Nb7 28. Qe7+ Qf7 29. Qxf7+ 1-0