[Event "Lone Pine op"]
[Site "Lone Pine"]
[Date "1981.??.??"]
[Round "?"]
[White "Ivkov, Borislav"]
[Black "Sigurjonsson, Gudmundur"]
[Result "1/2-1/2"]
[WhiteElo "2540"]
[BlackElo "2435"]
[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 O-O 10.e4 Nxc3 11.bxc3 c5 12.O-O cxd4 13.cxd4 Nc6 14.Be3 Bf6 15.e5 Be7
16.Qb1 h6 17.Qd1 f5 18.exf6 Bxf6 19.Be4 Qd7 20.Qa4 Rad8 21.Rad1 Ne7 22.Qxd7 Rxd7
23.Bxb7 Rxb7 24.Rc1 Rd8 25.g4 Rd5 26.h4 Ng6 27.Rc8+ Kf7 28.h5 Ne7 29.Rc4 b5  1/2-1/2

