[Event "July op"]
[Site "Calgary CAN"]
[Date "1993.??.??"]
[Round "4"]
[White "Ottosen, David"]
[Black "Bentley, Bill"]
[Result "0-1"]
[WhiteElo "1605"]
[BlackElo "1970"]
[PlyCount "90"]

1.d4 d5 2.e4 dxe4 3.Nc3 Nf6 4.f3 exf3 5.Nxf3 Bg4 6.Be3 e6 7.h3 Bxf3 8.Qxf3 c6 9.O-O-O Nbd7 10.Bd3 Nd5 11.Nxd5 cxd5 12.Rdf1 Qe7 13.Kb1 g6 14.h4 Bg7 15.g4 O-O 16.g5 Rac8 17.Rf2 Qb4 18.h5 Nc5 19.Qh3 Nxd3 20.cxd3 Qb5 21.hxg6 Qxd3+ 22.Ka1 Qxg6 23.Rfh2 Rc4 24.Qxh7+ Qxh7 25.Rxh7 Rfc8 26.a3 Rc2 27.R7h2 R8c4 28.Rxc2 Rxc2 29.Kb1 Rc4 30.Rd1 a5 31.Rd3 b5 32.b3 Rc8 33.Kb2 a4 34.bxa4 bxa4 35.Rc3 Rxc3 36.Kxc3 Bf8 37.Bc1 Kg7 38.Kd3 Kg6 39.Ke2 Be7 40.Kd3 Bxg5 41.Bxg5 Kxg5 42.Kc3 f5 43.Kd3 f4 44.Ke2 Kg4 45.Kf2 f3 0-1