[Event "CAN ch53"]
[Site "Ottawa CAN"]
[Date "1955.08.16"]
[EventDate "1955.08.16"]
[Round "1"]
[Result "1-0"]
[White "Ross Siemms"]
[Black "Hans Matthai"]
[ECO "A34"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "99"]

1.c4 c5 2.Nc3 Nf6 3.g3 d5 4.cxd5 Nxd5 5.Bg2 Nc7 6.Nh3 e5 7.O-O
Nc6 8.d3 h5 9.f4 h4 10.Ng5 Be7 11.Nf3 hxg3 12.hxg3 exf4
13.Bxf4 Ne6 14.Qa4 Bd7 15. Qe4 Nxf4 16.Qxf4 Be6 17.Ne4 Nd4
18.Nxd4 Qxd4+ 19.e3 Qd8 20.Rac1 Rc8 21.d4 cxd4 22.Rxc8 Qxc8
23.exd4 O-O 24.Nc3 Bf6 25.d5 Bd7 26.Rc1 Qc5+ 27.Kh2 Qb6 28.Ne4
Bxb2 29.Rc7 Bf5 30.d6 g6 31.Ng5 Bf6 32.Nxf7 Rxf7 33.Qc4 Qxc7
34. dxc7 Kg7 35.Bxb7 Be5 36.c8=Q Bxc8 37.Bxc8 Rc7 38.Qe6 Bf6
39.Ba6 Re7 40. Qg4 Re5 41.Bd3 Rh5+ 42.Kg2 Rg5 43.Qd7+ Kh6
44.Qxa7 Be5 45.Qe3 Bf6 46.a4 Kg7 47.Qa7+ Kh6 48.a5 Rd5 49.Qe3+
Bg5 50.Qe4 1-0