[Event "URS-ch31 Final"]
[Site "Leningrad"]
[Date "1963.11.??"]
[Round "15"]
[White "Nei, Iivo"]
[Black "Kortschnoj, Viktor Lvovich"]
[Result "1/2-1/2"]

1. c4 c5 2. Nc3 Nf6 3. e3 g6 4. Nf3 Bg7 5. d4 cxd4 6. exd4 d5 7. Be2 O-O 8. O-O Nc6 9. Be3 dxc4 10. d5 Na5 11. Qd2 Bg4 12. Rad1 Ne8 13. Bh6 Bxf3 14. Bxf3 Bxh6 15. Qxh6 Nd6 16. Rfe1 Qd7 17. Ne4 Nxe4 18. Rxe4 f5 19. Re6 Rf6 20. Rde1 Rxe6 21. Rxe6 Nc6 22. Rxg6+ hxg6 23. Qxg6+ 1/2-1/2