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Chestnut

Make this equation true with a single stroke of the pen to the left-hand side:

chestnut

SelectClick for Answer

chestnut solution

May 18, 2026May 17, 2026 | Puzzles

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Futility Closet is a collection of entertaining curiosities in history, literature, language, art, philosophy, and mathematics, designed to help you waste time as enjoyably as possible.

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