窗口数独 Windoku

窗口数独是一种特属于九阶的变型数独。

Windoku, or Windows Sudoku, is a kind of varaint sudoku, which is special for 9x9.

标准数独基础上，窗口数独里有4个涂色的区域，每个区域内都是1~9不重复。它看上去像是Windows系统的图标，所以叫窗口数独。

Besides classic rules, Windoku has 4 extra colored regions (with 1~9 no repeated inside), looks like the icon of Windows System.

◆窗口数独里一共有18个宫，如下图所示（白色的格子构成了一个分散的宫）。

There are 18 Boxs in a Windoku. White cells form a seperated one.

◆利用十八宫理论，下图中红色的候选数会被删除。

Using the 18 Boxs, the red candidates will be deleted by the Hidden Boxes.

练习 Practice

① 寻找下一步 Find the next hint.

答案 Answer

① 如图所示 As the pic shows.