This is a dream scenario for white.He is threatening three brutal combination attacks (shown below) and black is on his heels, using every single one of his pieces to tenuously defend against them.

 

 

But theyíre all covered by black arenít they?The key here (as you might expect based on the Topicís topic) is to use a block!

 

 

This block blocks blackís rook from defending the d pawn.Now the first combination will be successful.

 

 

Game over!