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|A logic and elimination (disjunctive syllogism) puzzle: the column and row headers identify the number and spacing of shaded squares within a grid--place shaded squares where they belong according to those guides. The site includes a history of the puzzles, a blog, links to books of these puzzles (and their errata), and related sites.|
|Levels:||Elementary, Middle School (6-8), High School (9-12), College|
|Resource Types:||Games, Web Interactive/Java|
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