need more levels... and to be harder....
only one jigsaw is a bit poor.... and although i agree with "autolocking"... you can guess where pieces are going to go even on the blank board... and if you move it around the blank bit, you'll notice it lock in, then you just drop it. So if people figure this out there isnt even need for any skill which is a bit against the object lol.... make more levels and make them harder :)