[Event "USA-ch"]
[Site "Estes Park"]
[Date "1987.??.??"]
[Round "7"]
[White "Christiansen, Larry Mark"]
[Black "Kogan, Boris"]
[Result "1-0"]
[WhiteElo "2575"]
[BlackElo "2460"]
[ECO "D15"]

1.Nf3 d5 2.d4 c6 3.c4 Nf6 4.Nc3 Qb6 5.g3 Bf5 6.Nh4 Bg6 7.Nxg6 hxg6 8.Qb3 e6
9.Bg2 Nbd7 10.O-O Be7 11.Rd1 O-O 12.e4 Nxe4 13.Nxe4 dxe4 14.Bxe4 Nf6 15.Bf3 Qxb3
16.axb3 Rfd8 17.Be3 Rd7 18.g4 Bd8 19.b4 a6 20.g5 Nh7 21.h4 Be7 22.d5 cxd5
23.cxd5 exd5 24.Rxd5 Rad8 25.Rxd7 Rxd7 26.Rc1 Bxb4 27.Rc8+ Nf8 28.Rb8 a5
29.b3 Rd3 30.Rxb7 Rxb3 31.Bd5 Rb1+ 32.Kg2 Ne6 33.h5 Rd1 34.Bb3 Rd3 35.Bc4 Rc3
36.Bxe6 fxe6 37.hxg6 e5 38.Rb8+ Bf8 39.Kf3 Rc4 40.Ra8 a4 41.Bb6 a3 42.Ke3 a2
43.Rxa2 Rc8 44.Ke4 Re8 45.Ra6 Bb4 46.Ra7 Bc3 47.Bc5 Be1 48.f3 Bg3 49.Be7 Bf4
50.Rd7 Bg3 51.Kf5 Bf4 52.Rd8 Rxd8 53.Bxd8 Bh2 54.Be7 Bf4 55.Bd6 Bd2 56.Bxe5 Bc1
57.Bd6 Bd2 58.f4 Bc1 59.Be7 Bd2 60.Ke5  1-0

