Mate in one

You already know a lot about checkmate the king. Since mating is so important in chess, we will practice it some more.

Checklist for checkmate:

• The king is in check.
• The king has no way to move out of check.
• The king cannot capture the piece that is checking him.
• It is not possible to move a piece between the king and the piece that is checking him.

If White checkmates the black king, White wins the game.

Have a look at the examples.
In the first example, it is not checkmate: Black can capture the white queen.
In the second example, there is nothing Black can do to get out of check: it is checkmate!

What do you have to do?
Checkmate the king in one move.