[Event "URS-ch sf Leningrad"] [Site "Leningrad URS"] [Date "1956.12.??"] [EventDate "?"] [Round "12"] [Result "1/2-1/2"] [White "Israel Zilber"] [Black "Georgy Lisitsin"] [ECO "A15"] [WhiteElo "?"] [BlackElo "?"] [PlyCount "26"] 1.Nf3 Nf6 2.c4 b6 3.Nc3 Bb7 4.d4 e6 5.e3 Bb4 6.Bd2 Bxc3 7.Bxc3 Ne4 8.Rc1 d6 9.Nd2 Nxc3 10.Rxc3 Nd7 11.e4 O-O 12.Be2 f5 13.exf5 exf5 1/2-1/2