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Kurotto is a binary determination puzzle in which the cells in a grid are split into either shaded or unshaded.


The objective is to divide the grid into shaded and unshaded cells, subject to the following rules:

  1. Numbers in some circles count the total shaded cells in connected groups sharing an edge with that number.
  2. Cells with circles cannot be shaded.


A standard 10x10 kurotto and its solution.

Kurotto Example
Kurotto Solution

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