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A paperback puzzle collection of 100 logic and number puzzles, written by Fred Coughlin and published by Skyhorse in 2020 under the Mensa and AARP names. It stands out for large-print pages and a mix of logic-grid, number and deduction puzzles pitched at a genuinely challenging level. It suits older solvers who want bigger type and a real workout rather than quick filler. Against typical drugstore puzzle books, it is harder and better printed, but it offers no hints or answer explanations beyond a solution key.
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Lowest price we've seen: $8.80 on Nov 10 at Walmart. Tracked across 2 stores since Nov 10.
Owners of this type of Mensa puzzle book generally like the large print and the serious difficulty, and treat it as a gift-friendly title for older solvers. The common complaints are that the puzzles can be too hard for casual fans and that the answer key gives solutions without explaining the reasoning.