狗爺語錄

After a series of kakuro strategies about difference of cells, here comes a variation of theme: sum of seemingly unrelated cells. Here is the starting[......]

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In previous post on Kakuro series, I showed how a simple difference of 2 cells can break through a seemingly difficult opening. Now I’m going to show a similar but more advanced version: difference of multiple cells.

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Last time I have had discussed about using arithmetics to solve kakuro (part 1, part 2); most of the methods are trivial for everybody except the last case which is not apparent. This one is also not apparent as well, and I have almost never encountered it except once. It is about:

Calculating the difference between 2 cells!

How can the difference of 2 cells be helpful? See below for initial configuration:

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