Checkmate with 1 piece (3)

Sometimes, you can make mate with only one piece. To do that, you need a bit of help from your opponent’s pieces. They have to block their own king from moving away. But always keep an eye on what your opponent might do. Otherwise things can go wrong.

The example shows what can happen on a crowded chess board.

What do you have to do?
Mate with one piece. Make sure the king cannot escape check by means of taking or blocking.