
Hard Logic Puzzles With Answers: Stostone Puzzles 100 Logic Grid Puzzles With Answers - Paperback
Hard Logic Puzzles With Answers: Stostone Puzzles 100 Logic Grid Puzzles With Answers - Paperback
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by Ted Warner (Author)
Stostone ("Stone on Stone") is a logic puzzle invented by Nikoli. A rectangular or square grid is divided into regions. The goal is to blacken some cells of a grid ("stones") according to the rules.



















