[Event "Lone Pine op"]
[Site "Lone Pine"]
[Date "1978.??.??"]
[Round "4"]
[White "Peters, John A"]
[Black "Portisch, Lajos"]
[Result "1/2-1/2"]
[WhiteElo "2430"]
[BlackElo "2630"]
[ECO "B51"]

1.e4 c5 2.Nf3 d6 3.Bb5+ Nc6 4.O-O Bd7 5.c3 a6 6.Ba4 b5 7.Bc2 Bg4 8.d3 e6
9.Nbd2 Be7 10.h3 Bh5 11.Re1 Rc8 12.Nf1 Ne5 13.Ng3 Bxf3 14.gxf3 g5 15.Nh5 Ng6
16.f4 gxf4 17.Bxf4 Bg5 18.Be3 Bxe3 19.fxe3 Qg5+ 20.Kh1 Qh4 21.Qg4 Qxg4 22.hxg4 Ke7
23.Rf1 Nh6 24.Nf6 Ng8 25.Nh5 Nh6 26.Nf6 Ng8  1/2-1/2

