A year of cranial conundrums designed to push your neurons to the limit. Sanctioned by Mensa, the internationally famous high-IQ society, 365 Brain Puzzlers is a calendar that's not for the (intellectually) faint of heart.
It's like boot camp for your brain, with a devilishly tough mix of more than 300 brain-scratching word puzzles, logic challenges, number problems, mini Sudoku, and more. A set of 20 numbers sums...
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