Excellent!
I was surprised to find some legitimate puzzles in here. None too hard, but they all made me think for a little until I had a revelation and the puzzle became easy.
This is when it started getting annoying, though. because the puzzles moved slowly and it took forever to do what you wanted. A clockwise/counterclockwise option would be nice on some.
Despite, a good game for anyone bored but wanting a mental challenge.