I was thinking about a situation on a chessboard. You can call it a riddle, but I am not sure whether it is solvable or not.
Let's say that there are more than 5 pieces for both Black and White, including the kings, on a chessboard and it is White's turn.
The Riddle: Is it possible to arrange all the pieces on the chessboard, in such a manner, so that, for every possible move by White, the Black king gets checkmated? Can you construct such a position?
What I've thought so far:
Since King can't give a checkmate (apart from exceptional cases of a two queens/two rook mate), the White king should be immovable. Otherwise, the criteria of the riddle can't be fulfilled. But thinking about it this way, I can't set up any position that meets the criteria of my riddle.=