K.O. Flip vs 数独侦探手

Get Flip (Light up / Black & White) solution / 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.

简单的数字，无尽的思考，来体验数独的乐趣吧～ 功能介绍： 多种挑战：各种难度挑战，从入门到专家； 笔记辅助：记录数独中各种不确定的数字； 推理草稿：不计错误的推理草稿模式，助力难题挑战； 挑战统计：见证自我进步。