[Event "URS-ch39 Final"]
[Site "Leningrad"]
[Date "1971.10.14"]
[Round "20"]
[White "Karpov, Anatoly"]
[Black "Balashov, Yuri S"]
[Result "1/2-1/2"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Bg5 Bd7 7. Qd2 Rc8 8. O-O-O Nxd4 9. Qxd4 Qa5 10. f4 e6 11. e5 dxe5 12. fxe5 Bc6 13. Bb5 Nd5 14. Bxc6+ bxc6 15. a3 h6 16. Bd2 Qb6 17. Qxb6 axb6 18. Ne4 b5 19. Kb1 f5 20. exf6 gxf6 21. g4 h5 22. h3 Be7 23. Rhg1 hxg4 24. hxg4 Rg8 1/2-1/2