Janko's Puzzle Collection
An enormous, long-maintained international archive of pencil-and-paper logic puzzle types, from Slitherlink to Hitori, each with rules and printable examples.
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World Puzzle Federation
The official site of the organization behind the World Puzzle Championship, publishing archived competition puzzle bookl…
Puzzle Light Up
A free browser implementation of Light Up (Akari), the pencil puzzle where placing light bulbs on a grid must illuminate…
Puzzle Bridges
A free browser implementation of Hashiwokakero, the pencil puzzle where numbered islands must be connected by a set numb…
Puzzle Star Battle
A free browser implementation of Star Battle, the pencil puzzle where stars must be placed on a grid so that no two touc…
Grandmaster Puzzles
A blog and puzzle hub run by top international constructors, publishing original Nikoli-style logic puzzles such as Slit…
Puzzle Shikaku
A free browser implementation of Shikaku, the pencil puzzle where a grid must be divided into rectangles each containing…
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