SUDOKU Large Print Puzzle Book for Adults: 200 HARD & VERY DIFFICULT Puzzles AUTH-191537 Harold McCormick

Harold McCormick

In this book you will learn 3 simple

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SUDOKU Large Print Puzzle Book for Adults: 200 HARD & VERY DIFFICULT Puzzles AUTH-191537 Harold McCormickBEWARE: These mind bending puzzles will make you think. This book is more difficult than "hard" Sudoku puzzles you may have done in the newspaper, in other books, or online. It is not for beginner nor intermediate puzzle solvers. The puzzles in this book require advanced logic techniques to solve. They may seem simple as you start, but you will come to a point where you need to use X Wing, XY Wing, XYZ Wing, XY Chains, Forcing Chains, Coloring, Naked