[Event "IBM"]
[Site "Amsterdam"]
[Date "1970.??.??"]
[Round "15"]
[White "Geller, Efim P"]
[Black "Ree, Hans"]
[Result "1-0"]
[WhiteElo ""]
[BlackElo ""]
[ECO "E66"]

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.g3 O-O 5.Bg2 c5 6.Nf3 d6 7.O-O Nc6 8.d5 Na5
9.Nd2 e5 10.e4 Ng4 11.h3 Nh6 12.b3 f5 13.exf5 gxf5 14.Bb2 b6 15.f4 Bd7 16.Qc2 Qf6
17.Ne2 Qg6 18.Nf3 e4 19.Nh4 Qf7 20.Bxg7 Qxg7 21.Qc3 a6 22.Qxg7+ Kxg7 23.Rfc1 b5
24.Nc3 Rab8 25.Nd1 bxc4 26.bxc4 Rb4 27.Bf1 Rfb8 28.Ne3 Rb2 29.Rc3 R8b6 30.Ra3 Nb7
31.Re1 a5 32.Be2 Rb1 33.Rxb1 Rxb1+ 34.Kf2 a4 35.Bd1 Rb4 36.g4 fxg4 37.hxg4 Na5
38.g5 Nf7 39.Rc3 Rb2+ 40.Rc2 a3 41.Rxb2 axb2 42.Bc2 Bc8 43.Bxe4 Ba6 44.Bb1 Kg8
45.Nhf5 Nxc4 46.Nxc4 Bxc4 47.Ne3 Ba6 48.Kf3 Kg7 49.a4 Bb7 50.Nf5+ Kf8 51.Ke4 Ba6
52.a5 Bb7 53.Ne3 Kg7 54.Kd3 h6 55.Nf5+ Kh7 56.Kc3 1-0