[Event "URS-ch31 Semifinal"]
[Site "Moscow"]
[Date "1963.??.??"]
[Round "?"]
[White "Bykov, Valery N"]
[Black "Nei, Iivo"]
[Result "0-1"]
1. d4 d5 2. c4 dxc4 3. Nf3 Nf6 4. e3 Bg4 5. h3 Bh5 6. Nbd2 e6 7. g4 Bg6 8. Ne5 Nbd7 9. Nxg6 hxg6 10. Bg2 Bb4 11. Qc2 c5 12. Qxc4 Qb6 13. dxc5 Nxc5 14. Ke2 O-O 15. a3 Bxd2 16. Bxd2 Nb3 17. Rad1 Rac8 18. Qb4 Qa6+ 19. Kf3 Nc5 20. Bc3 Nd5 21. Qd4 Nxc3 22. Qxc3 f5 23. Qd4 Ne4 24. Rhg1 Rc2 25. Rgf1 0-1