[Event "URS-ch39 Final"]
[Site "Leningrad"]
[Date "1971.09.19"]
[Round "4"]
[White "Grigorian, Karen Ashotovich"]
[Black "Geller, Efim P"]
[Result "1/2-1/2"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Nf3 O-O 6. Be2 e5 7. O-O Nc6 8. d5 Ne7 9. b4 Nh5 10. c5 Nf4 11. Bxf4 exf4 12. Rc1 a5 13. cxd6 cxd6 14. Qd2 axb4 15. Nb5 Bg4 16. Rc7 Nc8 17. Nfd4 Bxe2 18. Nxe2 1/2-1/2