规则Rules：
标准数独基础上，每种颜色的区域里都包括了1~9的所有数字。
Classic rules applied. Additionally, each colored region contains all kinds of numbers of 1~9.
◆例题 Example
◆在线涂鸦 Draw it Online
◆在线做 Do it by CTC
◆在线做 Do it by Penpa
