How to Start
Click or tap on one of the buttons. It goes from 0 to 3, 1 to 0, 2 to 1 or 3 to 2 that is it reduces that button’s
number by 1 or cycles round to 3. The surrounding buttons also change. Your aim is to set all the buttons to ‘0’ in as few taps as possible. You can go back a move and restart a puzzle.
The Puzzle levels go from 1, which is very simple, up to 9 which
is fiendishly tricky! There is no regular method of solving but, if you doubt
that a puzzle can be solved, you can hit the emergency Solve button.
