(1) Wallace,Gary - Salem,Paul [C01]
1971 SD Closed Championship Rapid City, SD

1.e4 e6 2.Nf3 d5 3.exd5 exd5 4.d4 Nf6 5.Be2 h6 6.Nc3 a6 7.a3 Bd6 8.h3 Be6 9.Be3 Nbd7 10.b4 0-0 11.0-0 Ne4 12.Nxe4 dxe4 13.Nh2 f5 14.f4 Nf6 15.c4 c6 16.Rf2 b5 17.Rc1 Kh8 18.Nf1 Rb8 19.g3 a5 20.c5 Be7 21.Rg2 axb4 22.axb4 Nd5 23.Bd2 Bf6 24.Be1 Qc7 25.Qd2 Rbd8 26.Bf2 g5 27.Ne3
Here a better try is 27.pxp.... [27.fxg5 ]

27...Nxf4 28.gxf4 gxf4 29.Nc2 e3 30.Bxe3 fxe3 31.Qxe3 Bg5 32.Rxg5 hxg5 33.Qxe6 Qg3+ 34.Kh1 Qxh3+ 35.Kg1 Rde8 36.Qxc6 Rxe2 37.Qh1 Qxh1+ 38.Kxh1 Rf6
[38...f4 ; 38...Kg7 ]

39.d5 Kg7
39. ....K-N2?, R-R3+ instead, looks best

40.Nd4 Rh6+
[40...Rd2 ]

41.Kg1 Reh2
Some how black just missed the N fork.

His error and this move, gave me the state championship.. 1-0