Brown Belt Kakuro: 150 Puzzles (Martial Arts Puzzles Series)

Kakuro is the next hot puzzle craze, and everyone can give it a try with this new, multilevel series. So, in addition to being fun, they help develop your powers of deduction and reasoning. Beginners can get started - and more experienced solvers hone their skills - with these perfectly tiered "belt" books, each containing 150 kakuros.

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