[Event "World Championship 21th"] [Site "Moscow RUS"] [Date "1957.03.21"] [Round "7"] [White "Botvinnik, Mikhail M"] [Black "Smyslov, Vassily V"] [Result "1/2-1/2"] [ECO "E45"] [EventDate "1957.03.05"] 1.c4 Nf6 2.Nc3 e6 3.d4 Bb4 4.e3 b6 5.Ne2 Ba6 6.a3 Bxc3+ 7.Nxc3 d5 8.b3 O-O 9.Be2 dxc4 10.bxc4 Nc6 11.Nb5 Na5 12.Bd2 c6 13.Bxa5 bxa5 14.Nc3 c5 15.Na4 cxd4 16.exd4 Qd6 17.O-O Rad8 18.Qd2 Qxd4 19.Qxa5 Qe4 20.Nc3 Qc6 21.Nb5 Qb6 22.Qxb6 axb6 23.Rfd1 Ne4 1/2-1/2