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How to start Click or tap on a buttons and you will see it changes colour together with some of its nearest neighbours. Buttons will change back again if you click a second time. Your aim is to change the color of all the buttons from orange to blue. This is a deceptively easy puzzle but don’t be fooled. There are three puzzles to try where different buttons change. The counter is useful to see if you can beat your own score or to challenge a friend to solve it in less clicks.
When you solve the puzzle, you can record the solution by numbering the squares from 1 to 81 and noting those to click on (in any order).
I have created a new and interesting variation. My version is called Lawnmower.
