[Event "URS-ch31 Final"]
[Site "Leningrad"]
[Date "1963.11.??"]
[Round "4"]
[White "Zakharov, Alexander V"]
[Black "Spassky, Boris Vasilievich"]
[Result "1/2-1/2"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e6 6. Be2 a6 7. O-O Qc7 8. f4 Be7 9. Bf3 O-O 10. Kh1 Nc6 11. Be3 Bd7 12. Qe1 Rac8 13. Qg3 Kh8 14. Rad1 b5 15. a3 Nxd4 16. Bxd4 Bc6 17. e5 dxe5 18. fxe5 Nd7 19. Ne4 Bxe4 20. Bxe4 f5 21. exf6 Qxg3 22. hxg3 Bxf6 23. c3 1/2-1/2