Powerful Pin Mates

Hello chesskid kids!  How good are your pins?  In these puzzles there will be a pin on the board already.  Your job is to make checkmate in one move!  By, Mrs Jessica E Prescott (aka BoundingOwl).  Piece of cake!

1.  White to move.  There are two rooks, but which one should you move?

2. Super pin position!

3.  Find the pin first.  Now checkmate!
 
4.  The king won't be dancing after this one!  Discovered-pin-mate!
 
 
5.  Unusual! What's better than getting a new queen?

 
Checkmate, of course! 
 
Why are these pins so powerful?  They are all "absolute" pins.  Stuck to the king!  It's like they are giant rocks instead of chess pieces.  Remember:  "A pinned piece does not protect."  Click here for more powerful pin puzzles!