Black Belt Kakuro - 150 Puzzles (Conceptis Puzzles)(Paperback)

Kakuro language-free number puzzle that uses pure logic and requires just simple arithmetic to solve. This book is a part of a multilevel series of belt books, each containing 150 kakuros. These books take their cue from the belt colors in martial arts such as: white is for novices, and black for those consummate experts who crave a
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