"15PlusPuzzle" is a very difficult puzzle. From 8th level of the game you start problems. Will begin incredible problems. "15PlusPuzzle" will require you not only logical thinking! You will need an incredible ability to remember many details of puzzle and their location. To place one piece of puzzle you will have to break already assembled parts. Lay down back everything , you need to be very, very attentive to detail and remember your every move.
When you are ready to join to us, to test ourselves for 10-15 levels. Or maybe you capable of more?