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Pell Puzzles Review
Pell Puzzles scores 86/102: a proper logic puzzle with a rule you can explain in one breath, and that rule ends up guiding most of the solving for you.
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Pell Puzzles scores 86/102: a proper logic puzzle with a rule you can explain in one breath, and that rule ends up guiding most of the solving for you.
None
Or read this on Hacker News