规则Rules：
① 填入1~9，使得每行、列、宫内不重复。
② 相邻的两个单元格内，数字之差不能是1。
① Write 1~9, make numbers no repeated in each Row, column and Box.
② Numbers in two adjacent cells, cannot be consecutive.
◆不连续规则 Rule of Non-Consecutive
◆在线涂鸦 Draw it Online
◆在线做 Do it by CTC
◆在线做 Do it by Penpa
