规则Rules：

标准数独基础上，任意三个直线相邻（包含斜向）的格，如果中间一格数字是5，那么两端两格数字连续。

Classic rules applied. Additionally, for all three numbers in linearly adjacent squares (orthogonally or 45-degree diagonally), numbers at both ends are consecutive if the middle one is 5. 

◆在线做Do it by CTC

◆在线做 Do it by Penpa

*庆祝网站400题，进入奔5的阶段~撒花！

*这道题的卡点比较有意思，但是似乎不太容易直观。