点灯是一种逻辑解谜游戏，它规则简单，解题过程富有挑战性。有一行N行N列的灯，开始时全部是灭的，当你点击其中一盏灯时他的上下左右（若存在的话）状态全部改变，现在要求你在限定的时间内以最少地步数，将全部的灯点亮。
注意：你可以通过滑动屏幕来重置关卡。
又：希望能引起你对矩阵运算的兴趣。
LightsOut is a puzzle where you are given a grid of cells, or lights, with some dark and others light. You must turn them all off by clicking on the cells. Each click toggles that cell and each of its immediate neighbors. All valid LightsOut puzzles can be solved without clicking on any cell twice. This is because clicking on a cell twice is the same as not clicking it at all. The easiest way to solve LightsOut puzzles is to use a method called Chase The Lights.
Hope this puzzle could bring you some interest on Matrix Mathematics.
Note: You could swipe to restart the puzzle!