分散锯齿 Scarlet Jigsaw
分散锯齿是锯齿的一种变型。N阶锯齿数独基础上，有一个宫被拆成了N个涂色格。
Scarlet Jigsaw is a variant of Jigsaw. Jigsaw rules applied, additionally, one Box is seperated as N colored cells in NxN puzzles.
练习 Practice
① 解答问号格 Find out the ？cells.
答案 Answer
① B5=2; B6=2.
