[Event "CAN-ch"]
[Site "Vancouver CAN"]
[Date "1957.08.31"]
[Round "9.5"]
[White "Ackermann, Gustav"]
[Black "May, Frank"]
[Result "1-0"]
[PlyCount "87"]

1.e4 Nf6 2.Nc3 e5 3.Nf3 Nc6 4.d4 exd4 5.Nxd4 Bb4 6.Nxc6 bxc6 7.Bd3 O-O 8.O-O d5 9.exd5 cxd5 10.Bg5 c6 11.Qf3 Be7 12.h3 h6 13.Bf4 Bd6 14.Rfe1 Rb8 15.Bxd6 Qxd6 16.b3 Be6 17.Re2 c5 18.Rd1 Rfd8 19.a4 Rbc8 20.Kh1 Qb6 21.Bf5 Bxf5 22.Qxf5 d4 23.Ne4 Nd5 24.Rd3 c4 25.Rf3 Qg6 26.Qe5 f6 27.Qe6+ Qf7 28.Qf5 c3 29.Nd6 Rxd6 30.Qxc8+ Kh7 31.Qf5+ Qg6 32.Qc8 Nb6 33.Qf8 d3 34.cxd3 Rxd3 35.Re8 Qxe8 36.Qxe8 c2 37.Qe4+ Kh8 38.Rxd3 c1=Q+ 39.Kh2 Qc7+ 40.g3 Nc8 41.Qd4 Kh7 42.Rc3 Qb7 43.Qd3+ g6 44.Qd8 1-0