规则Rules：
标准数独基础上，从一个涂色格到另一个涂色格之间，一定有一条仅通过正交相邻的单元格组成路径，并且路径上的单元格全部是奇数。
Classic rules applied. Additionally, there must be at least one path from one colored cell to another colored cell which passes orthogoanlly through only odd digits.
◆在线涂鸦 Draw it Online
◆在线做 Do it by CTC
◆在线做 Do it by Penpa
