[Event "URS-ch39 Final"]
[Site "Leningrad"]
[Date "1971.09.19"]
[Round "4"]
[White "Platonov, Igor V"]
[Black "Karpov, Anatoly"]
[Result "1/2-1/2"]

1. d4 Nf6 2. Nf3 e6 3. e3 b6 4. Bd3 Bb7 5. Nbd2 c5 6. O-O cxd4 7. exd4 Be7 8. b3 O-O 9. Bb2 Nc6 10. a3 Qc7 11. Re1 Rac8 12. c4 d5 13. Rc1 Rfd8 14. Qe2 dxc4 15. bxc4 Qf4 16. g3 Qh6 17. Rc2 Qh5 18. Qf1 Rc7 19. Be2 Qf5 20. Bd3 Qh5 21. Be2 1/2-1/2