[Event "Tilburg"]
[Site "Tilburg"]
[Date "1979.??.??"]
[Round "5"]
[White "Sosonko, Gennadi"]
[Black "Portisch, Lajos"]
[Result "1/2-1/2"]
[WhiteElo "2535"]
[BlackElo "2640"]
[ECO "E15"]

1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.g3 Ba6 5.b3 d5 6.Bg2 Bb4+ 7.Bd2 Be7 8.O-O O-O
9.cxd5 Nxd5 10.Nc3 Nd7 11.Re1 c5 12.Rc1 Bb7 13.Nxd5 Bxd5 14.Bf4 Nf6 15.Qd3 Be4
16.Qd2 Nd5 17.Red1 Rc8 18.dxc5 Bxc5 19.Rc4 Nxf4 20.Rxe4 Qxd2 21.Rxd2 Nd5
22.Ne5 Bd6 23.Nd3 Rfd8 24.Rd4 Nc3 25.a4 Be7 26.Rxd8+ Rxd8 27.Bf3 f5 28.Rc2 Bf6
29.Kg2 Kf7 30.Nb4 a5 31.Nc6 Rd6 32.Na7 Rd1 33.Nb5 Nxb5 34.axb5 Rb1 35.Rc7+ Be7
36.Rb7 Rxb3 37.Rxb6 a4 38.Bc6  1/2-1/2

