Sudoku Neighbours - 200 Hard to Master Puzzles 8x8 (Volume 2) by Dart Veider (En
15,35 €
By Dart Veider. Author Dart Veider. Neighbours is played on a grid of irregular shape. It is necessary to divide the grid into a number of connected regions of an equal number of cells. Regions are neighbours when they share a part of their border.
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