Hard to Extreme Jigsaw Sudoku - 100 Challenging Puzzles: Irregular Sudoku Puzzle Book for Adults - Extremely Difficult Sudoku Variant for Advanced Pla (Paperback) (ISBN-13: 9798597763781)

Jigsaw Sudoku (also called "Geometry Sudoku", "Geometry Number Place", "Irregular Sudoku")isa number placing game based on a grid with given numbers. Unlike regular Sudoku, thegrids (9x9 in this book) are divided into irregular jigsaw-like shapes instead of 3x3 boxes. The object of the puzzle is to place the numbers 1 to 9 in the empty cellsso that each row, each column, and each jigsaw-like shape contains the same number only once.

In this pocket-size puzzle book, we've included 100 really challengingpuzzles: 50 hard Jigsaw Sudoku and 50 Jigsaw Sudoku.

With the unique matte finish book cover, this book can be a great gift for family members, friends and co-workers, especially those who love playing Sudoku and want to try a different and difficult type.

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