[Event "Lone Pine op"]
[Site "Lone Pine"]
[Date "1981.??.??"]
[Round "?"]
[White "Ivkov, Borislav"]
[Black "Whitehead, Jay E"]
[Result "1-0"]
[WhiteElo "2540"]
[BlackElo "2290"]
[ECO "E12"]

1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.a3 Bb7 5.Nc3 d5 6.cxd5 Nxd5 7.e3 Be7 8.Bb5+ c6
9.Bd3 Nd7 10.e4 Nxc3 11.bxc3 Qc7 12.O-O O-O 13.Qe2 e5 14.a4 Rfe8 15.Qa2 c5
16.d5 Bd6 17.Nd2 a6 18.Qc2 Reb8 19.c4 a5 20.Nb1 Re8 21.Nc3 Nb8 22.Nb5 Qe7
23.f4 Nd7 24.Rb1 Ba6 25.f5 Bxb5 26.Rxb5 Qd8 27.Rf3 Be7 28.Rg3 Bh4 29.Rh3 Bg5
30.Be2 Bxc1 31.Qxc1 h6 32.Rbb3 Qg5 33.Qxg5 hxg5 34.Rhg3 f6 35.Rh3 Red8 36.Bh5 Rab8
37.Bg6 Nf8 38.Rh5 Nxg6 39.fxg6 Kf8 40.Rh7 Rb7 41.Kf2 Ke8 42.Kf3 Rdd7 43.Kg4 Re7
44.Kf5 Kd7 45.Rh8 Kc7 46.g3 Kd7 47.h4 gxh4 48.gxh4 b5 49.Rxb5 Rxb5 50.axb5 a4
51.Ra8 Kd6 52.Rxa4 Ra7 53.Ra6+  1-0

