15
White to play. Mate in 2 moves
(lemmy.ml)
Link to interactive chessboard
FEN = 8/2N1p3/2ppR3/Qn2P3/B1k5/1N2K3/8/8 w - - 0 1
Composition by Robert Tony Lewis.
Took me quite a while to find it. Frustrating considering White has such an overwhelming advantage in this position.
Solution
Queen moves to d2, threatening mate with Qd4 unless Black defends d4 with pawn to c5. However, the a5 square is now free for the Knight to deliver checkmate anyway, so black's only defense is fruitless.