8/5nkp/3p4/4p3/pqNrPp2/2R2P2/1PQ3PP/6K1 b - - 0 1
Black to move
White has just blundered by playing 1 Qe2-c2??, leaving behind the e1-mating sq, resulting in a pin against a square which Black exploits with 1 ... Rd4xNc4!, winning a piece as the White c3-rook is pinned against the e1-mating sq.
Thanks