Update 2: 'Restart Button' in the right bottom of the gameplay screen and "Easy mode": When you pass 1 level it will open the next 3 levels and not just one.
Tip: If you want to pause or go back some screen you can press "ESC".
UPDATE 1: Now you can click with the mouse to select the piece and use the arrows or WASD to move the piece. The selected piece get a lighter color.
Also changed the amount of move with mouse, now you have to drag a little longer for the piece to move.
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