Saturday, 13 July 2013

Nurikabe Pairs Instructions

Nurikabe Pairs

Rules:

The challenge is to paint each cell black or white, subject to the following rules:

  1. Each wall must contain exactly two numbered cells.
  2. The total of the two cells added together give the wall cell, the numbers in it is are number of cells in that wall.
  3. There must be only one stream, which is not allowed to contain "pools", i.e. 2x2 areas of black cells.

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