[Event "Ontario op"]
[Site "Toronto CAN"]
[Date "1963.??.??"]
[Round "2"]
[White "Day, Lawrence"]
[Black "Grimshaw, David"]
[Result "1/2-1/2"]
[WhiteElo "2367"]
[PlyCount "83"]

1.c4 Nf6 2.d4 g6 3.Nc3 Bg7 4.e4 d6 5.f3 c6 6.Be3 a6 7.a4 O-O 8.g3 Nbd7 9.Qd2 e5 10.d5 cxd5 11.Nxd5 Nxd5 12.Qxd5 Nf6 13.Qd2 Be6 14.Rd1 Rc8 15.b3 Rc6 16.Qb4 Qc7 17.a5 Nd7 18.Ne2 f5 19.Nc3 Nc5 20.Nb5 axb5 21.cxb5 Na6 22.bxa6 bxa6 23.Bb6 Qc8 24.Bd3 fxe4 25.Bxe4 d5 26.Rxd5 Bxd5 27.Bxd5+ Kh8 28.Bxc6 Qxc6 29.O-O Rxf3 30.Bc5 Rxf1+ 31.Kxf1 Qh1+ 32.Bg1 Qf3+ 33.Bf2 h6 34.Qb6 Qd3+ 35.Kg2 Kh7 36.b4 e4 37.b5 axb5 38.a6 Qf3+ 39.Kg1 Qd1+ 40.Kg2 Qf3+ 41.Kg1 Qd1+ 42.Kg2 1/2-1/2