[Event "Olympiad-19 Preliminaries A"]
[Site "Siegen"]
[Date "1970.09.13"]
[Round "9"]
[White "Lagha, Khelil"]
[Black "Geller, Efim P"]
[Result "0-1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f3 O-O 6. Nge2 e5 7. d5 c6 8. Be3 cxd5 9. cxd5
Na6 10. Nc1 Nh5 11. g3 Bd7 12. Bg2 f5 13. O-O f4 14. Bf2 fxg3 15. hxg3 Qg5 16. N1e2 Bh6
17. Kh2 Rf7 18. g4 Nf6 19. Qc1 Qxc1 20. Nxc1 Nb4 21. Bg3 Raf8 22. N1e2 Nc2 23. Rab1 Be3
24. Ng1 h5 25. gxh5 Rh7 26. Bh3 Bxg1+ 0-1