规则Rules：
标准数独基础上，每条线上的数字按顺序从一端到另一端是一组等差数列。
Classic rules applied. Additionally, on each line, numbers form arithmetic sequence in order from one side to another side.
◆例题 Example
◆在线做Do it by CTC
◆在线做 Do it by Penpa
7月7日更新，补足了F7的已知数遗漏的BUG
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