规则Rules：
填入1~7，使得每行、列、宫内数字不重复。相邻的两个单元格内，数字之差不能是1。
Write 1~7, make numbers no repeated in each Row, column and Box. Numbers in two adjacent cells cannot be consecutive.
◆不连续数独规则 Rules of Non-Consecutive
◆在线做 Do it by CTC
◆在线做Do it by Penpa
