Swap to Gold

Change all silver stars to gold by tapping on them. When you tap on a star up to four stars adjacent to the corners are also changed.
You can alter the size from a minimum of 3 upto a maximum of 9 stars in vertical and horizontal direction.
To swap a random number of stars hit the Shuffle button.
To start over hit the Reset button.
To stop hit the Quit button.
For a 3 by 3 grid it can be solved in 5 moves.
For a 4 by 4 grid it can be solved in 8 moves.
For a 6 by 6 grid it can be solved in 20 moves.