狗爺語錄

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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As discussed in previous post, kakuro can be tackled using simple addition and subtraction during initial stage, particularly if the kakuro puzzle contains some certain arrangement pattern. As an example, see the figure below:
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Sort of puzzled — I haven’t seen anywhere mentioning that some kakuro puzzles can be solved with the help of simple arithmetics (yet). Indeed I don’t mean the whole puzzle can be solved merely with addition and subtraction; nor do I mean every puzzle can be worked on this way. Arithmetics usually only works at the beginning, and only works with some kind of puzzles. Here is a simple example. Consider the following fragment:

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