规则Rules:
标准数独基础上,三个涂色区域中,相同的位置对应的数字一致。
Classic rules applied. Additionally, in the 3 colored zones, same position own same number.
作者Author:Sky Yang
◆例题 Example
◆在线涂鸦 Draw it Online
◆在线做 Do it by CTC
◆在线做 Do it by Penpa