[Event "IBM"]
[Site "Amsterdam"]
[Date "1967.??.??"]
[Round "2"]
[White "Zuidema, Coenraad"]
[Black "Kotov, Alexander"]
[Result "1/2-1/2"]
[WhiteElo ""]
[BlackElo ""]
[ECO "B06"]

1.e4 d6 2.d4 g6 3.Nc3 Bg7 4.f4 Nc6 5.Nf3 Bg4 6.Be3 Bxf3 7.gxf3 e6 8.Qd2 d5
9.O-O-O Nge7 10.f5 exf5 11.Bh6 O-O 12.Bxg7 Kxg7 13.h4 h5 14.Bh3 fxe4 15.fxe4 f5
16.e5 Qd7 17.Ne2 Nd8 18.Nf4 Ne6 19.Rhg1 Nxf4 20.Qxf4 Qe6 21.Rg5 Rh8 22.Rdg1 Raf8
23.Bf1 Kf7 24.Kb1 Ke8 25.R5g3 Kd8 26.Rb3 Kc8 27.Qd2 Nc6 28.Rbg3 Rhg8 29.c3 Kb8
30.Qh6 Ne7 31.Qf4 Rc8 32.Be2 c5 33.Qh6 cxd4 34.cxd4 Qb6 35.Qf4 Ka8 36.Rb3 Qe6
37.Bb5 a6 38.Be2 Rc6 39.Rbg3 Rgc8 40.Bd3 R6c7 41.Ka1 Qb6 42.Bb1 Rc4 43.Rd1 Ka7
44.a3 R4c6 45.Qg5 R8c7 46.Qf4 Qb5 47.Rdg1 Qa4 48.Ka2 Rb6 49.Qd2 Qc4+ 50.Ka1 Rb3
51.Rxb3 Qxb3 52.Rc1 Rxc1 53.Qxc1 Qc4 54.Qg5 Nc6 55.e6 Qe2 56.Qxg6 f4 57.Qf5 f3
58.Qxd5  1/2-1/2

