We have something new for you, with Brain Teaser Puzzles Adults, a great way for you to spend a few hours in deep concentration, working out complex and fun puzzles and conundrums. Walls is a logic puzzle, invented by Naoki Inaba (Japan). The task is to place a horizontal or a vertical line in every blank cell. A number in a black cell indicates the total length of the segments connected to that square. The book comes complete...
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