[Event "Lone Pine, 1975"] [White "Roy Ervin"] [Black "Arnold Denker"] [FEN "6k1/5p2/p5n1/8/1p1p2P1/1Pb2B1r/P3KPN1/2RQ3q b - - 0 1"] %Hidden=1 1... Nf4+ 2. Nxf4 Qxf3+ 3. Kf1 Rh1#