[Event "Lone Pine"] [Site "Lone Pine CA, USA"] [Date "1979.04.02"] [Round "7"] [White "John A Grefe"] [Black "Viktor Korchnoi"] [Result "0-1"] [WhiteElo "2400"] [BlackElo "2695"] [ECO "C17"] [Opening "French: Winawer, Advance, 4...c5"] 1.e4 e6 2.d4 d5 3.Nc3 Bb4 4.e5 c5 5.Bd2 cxd4 6.Nb5 Bf8 7.Qg4 h5 8.Qf4 Bd7 9.Nf3 Qb6 10.a4 a6 11.a5 axb5 12.axb6 Rxa1+ 13.Ke2 Ne7 14.Nxd4 Ng6 15.Qe3 Bc5 16.Qc3 Bxb6 17.Nb3 Ra4 18.Be3 Bxe3 19.Kxe3 O-O 20.f3 Rc8 21.Qd2 Nxe5 22.Kf2 Ra2 23.c3 Nc4 24.Bxc4 bxc4 25.Nc1 Ra6 26.Ne2 f6 27.Nf4 Be8 28.g4 hxg4 29.Rg1 Nd7 30.Rxg4 Ne5 31.Rg3 Rd6 32.h4 Rc7 33.h5 d4 34.cxd4 Nd3+ 35.Nxd3 cxd3 36.Qxd3 Bxh5 37.Rh3 Rd5 38.Qe4 Re7 39.f4 Kf7 40.Rg3 Bg4 41.Qh7 f5 42.Rd3 Red7 43.Qh1 b5 44.Qa1 Kf6 45.Ke3 g5 46.Qf1 Kg6 47.Qc1 gxf4+ 48.Kxf4 Rxd4+ 49.Rxd4 Rxd4+ 50.Ke5 Rc4 51.Qh1 Re4+ 52.Kd6 Kg5 53.Ke7 Re2 54.Kf7 f4 55.Kg7 f3 56.Qh6+ Kf5 57.Qf6+ Ke4 58.Qg5 Bf5 59.Qh4+ Ke3 60.Kf6 f2 61.Qg3+ Kd2 62.Qc3+ Kd1 63.b4 Rd2 64.Qf3+ Kc2 {#R} 0-1