Queen fork

Aloha!  It's time to practice some forks.  And you get to use your special lady, the Queen!  Everyone's favourite piece.  She can move in 8 different directions so she's very good at attacking more than one thing at a time.  If you only attack one piece, it'll just run away.  But attack two and you're likely to win one.  They can't both run away at the same time!

I am going to give you a few puzzles to solve.  The first one will be easy.  But they will get harder!

In each puzzle, 

1.  Look for a hanging piece, and

2.  Look for checks.

Except for the first one, each puzzle will be a combination.  So, here's a hint:  you can sacrifice stuff!

I will do one for you.  This is an example of a combo:

First I noticed that the rook was hanging on c8.  If I just put the queen on g4 right away, she goes bye-bye.  So I had to eat the knight first, which also blows open the castle.  Then I can attack the king AND the rook!

What if it were black's turn?  Do you see an easy fork in one move?

Black to move.  What about the white rook ?

White to move.  This one is tricky.