[Event "CAN-op"]
[Site "Toronto CAN"]
[Date "1983.07.11"]
[Round "4"]
[White "Delaune, Richard"]
[Black "Wilder, Michael"]
[Result "1/2-1/2"]
[WhiteElo "2415"]
[BlackElo "2440"]
[PlyCount "80"]

1.c4 Nf6 2.Nc3 g6 3.e4 d6 4.d4 Bg7 5.f3 O-O 6.Bg5 c5 7.d5 e6 8.Qd2 exd5 9.cxd5 a6 10.a4 Qa5 11.Ra3 Nbd7 12.Nh3 Re8 13.Nf2 Qc7 14.Be2 c4 15.O-O Rb8 16.a5 b5 17.axb6 Nxb6 18.Kh1 Nfd7 19.Bh6 Bxh6 20.Qxh6 Nc5 21.g4 Qe7 22.g5 Nbd7 23.Ng4 Rxb2 24.Bxc4 f6 25.e5 fxe5 26.Ne4 Rf8 27.Ngf6+ Nxf6 28.gxf6 Rxf6 29.Nxc5 Rf4 30.Nd3 Rxh2+ 31.Qxh2 Rh4 32.Ra2 e4 33.Ne1 Bf5 34.Qxh4 Qxh4+ 35.Rh2 Qf4 36.Ng2 Qg3 37.Nh4 Bh3 38.Rg1 Qxh4 39.Bf1 Qh5 40.Rxh3 Qxd5 1/2-1/2