Get Flip (Light up / Black & White) answers / solving steps immediately. It supports 3x3, 4x4, 5x5, 6x6, 7x7, 8x8 puzzle. The abundant puzzle store is waiting for you to play. ---------------------------- In the grid of N rows x N columns, click any square, the square and its up/down/left/right(if exist) squares will undergo black-and-white color conversion. When the initial pattern is converted to the target pattern, the puzzle is solved.
