[Event "HUN-ch"]
[Site "Budapest"]
[Date "1981.??.??"]
[Round "?"]
[White "Portisch, Lajos"]
[Black "Groszpeter, Attila"]
[Result "1-0"]
[WhiteElo "2650"]
[BlackElo "2435"]
[ECO "A29"]

1.c4 e5 2.Nc3 Nf6 3.g3 d5 4.cxd5 Nxd5 5.Bg2 Nb6 6.Nf3 Nc6 7.d3 Be7 8.a3 Be6
9.b4 a6 10.O-O O-O 11.Ne4 f6 12.Qc2 Qe8 13.Rb1 Rd8 14.Nc5 Bc8 15.Bd2 Bxc5
16.Qxc5 e4 17.dxe4 Qxe4 18.Be3 Qc4 19.Bf4 Qxc5 20.bxc5 Nd5 21.Bd2 Rfe8 22.Rfe1 Re4
23.e3 Rc4 24.Rbc1 Rxc1 25.Rxc1 Bf5 26.Nh4 Bd3 27.Be1 Nde7 28.Rd1 Kf7 29.Bc3 b6
30.cxb6 cxb6 31.Nf3 b5 32.Ne1 Bc4 33.Rxd8 Nxd8 34.Nc2 Ndc6 35.Nb4 Nxb4 36.axb4 Nd5
37.Bd2 f5 38.f3 Nb6 39.e4 fxe4 40.fxe4 Be6 41.Kf2 Nc4 42.Bc3 g6 43.Kf3 g5
44.Ke2 Bd7 45.Kd3 Ke6 46.h4 gxh4 47.gxh4 Kd6 48.Kd4 Bg4 49.Be1 h5 50.e5+ Ke6
51.Bd5+ Kf5 52.Bg3 Nd2 53.Bg8 Bd1 54.e6 Kf6 55.Be5+ Ke7 56.Bf4 Nc4 57.Bg5+ Kf8
58.e7+ Ke8 59.Bh7 Nd6 60.Ke5 Kd7 61.Kf6 Bb3 62.Kg7 Ke8 63.Kf6 Kd7 64.Bg6 Ne8+
65.Ke5 Bd1 66.Bf5+ Kc6 67.Be3 Bf3 68.Bc5 Be2 69.Kf4 Bc4 70.Bg6 Kd7 71.Kg5  1-0

