[Event "Buenos Aires Najdorf"]
[Site "Buenos Aires"]
[Date "1996.??.??"]
[Round "8"]
[White "Tiviakov, Sergei"]
[Black "Spangenberg, Hugo"]
[Result "1/2-1/2"]
[WhiteElo "2625"]
[BlackElo "2505"]
[ECO "B43"]

1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 a6 5.Nc3 Qc7 6.Bd3 g6 7.Nde2 Nc6 8.Bf4 Ne5
9.Be3 Bg7 10.f4 Nc4 11.Bxc4 Qxc4 12.a4 Ne7 13.Qd6 Qc6 14.Qb4 d5 15.Bc5 Qc7
16.Bd6 Qd8 17.O-O-O Nc6 18.Qc5 d4 19.Nxd4 Nxd4 20.Be5 Bxe5 21.Qxe5 f6 22.Qxd4 Qxd4
23.Rxd4 Bd7 24.Rhd1 Bc6 25.b3 g5 26.fxg5 fxg5 27.Kd2 Ke7 28.Ke3 Rhc8 29.Rb4 Rab8
30.Ne2 Be8 31.Rd2 b5 32.axb5 axb5 33.Rbd4 Rc5 34.h3 Rbc8 35.c3 Ra8 36.Rd6 Ra3
37.b4 Rc4 38.R2d3 h5 39.g3 Bg6 40.Rd7+ Kf6 41.R7d4 Rc7 42.h4 gxh4 43.gxh4 Ke5
44.Nf4 Be8 45.Rd8 Rc4 46.R3d4 Rxd4 47.Rxd4 Rxc3+ 48.Nd3+ Kf6 49.Kf4 Rc4 50.Rxc4 bxc4
51.Nc1 c3 52.Ke3 c2 53.Kd4 1/2-1/2