[Event "IBM"]
[Site "Amsterdam"]
[Date "1971.??.??"]
[Round "4"]
[White "Keres, Paul"]
[Black "Smyslov, Vassily"]
[Result "1/2-1/2"]
[WhiteElo "2615"]
[BlackElo "2620"]
[ECO "B15"]

1.e4 c6 2.d4 d5 3.Nc3 dxe4 4.Nxe4 Nf6 5.Nxf6+ exf6 6.Bc4 Qe7+ 7.Qe2 Be6 8.Bb3 Na6
9.c3 Nc7 10.Bf4 Bxb3 11.axb3 Nd5 12.Bg3 a6 13.Kd2 Qxe2+ 14.Nxe2 O-O-O 15.Rhe1 Bd6
16.Bxd6 Rxd6 17.Ng3 Re6 18.Ne4 Nc7 19.Nc5 Rxe1 20.Rxe1 Re8  1/2-1/2

