Defense: blocking

If one of your pieces is under attack, you will want to defend it.
You already know how to this by moving, capturing or protecting.
There is a fourth way. Do you still know it?

Right, blocking or interposing!
You place another piece between the attacked piece and the attacker. This way, the other player cannot take your piece.

You already know some things about blocking from Pawn level. But now, it gets a little bit harder because there are more pieces on the board.

The example shows how blocking is done. So, have a look at it.

What do you have to do?
One of your pieces is under attack. Defend it by interposing a piece to block the attack.