Good Morning Puzzlers, This problem is from Mario Lang's puzzle web page at http://delysid.org:80/chess/epd.cgi and is reported to be from Fred Reinfield's book "Win At Chess" 1958. Problem WAC007 Black to move FEN Problem Setup: rnbqkb1r/ pppp1ppp/ 8/ 4P3/ 6n1/ 7P/ PPPNPPP1/ R1BQKBNR b - - 0 1 Short Algebraic Problem Setup: White: Ke1, Qd1, Ra1, Rh1, Bc1, Bf1, Nd2, Ng1, Pa2, Pb2, Pc2, Pe2, Pe5, Pf2, Pg2, Ph3 Black: Ke8, Qd8, Ra8, Rh8, Bc8, Bf8, Nb8, Ng4, Pa7, Pb7, Pc7, Pd7, Pf7, Pg7, Ph7 The best move is: 1... Ne3 Principle: Principle: This puzzle may be contrived as the position appears unlikely. and it is difficult to see any double attack. Moving the knight to e3 forks the queen and bishop if the f-pawn takes the knight, black mates with queen to h4 so the forking square reveals a mate! I was thinking the other way around: queen to h4 threatening mate