udoku ("Geometry Sudoku", "Geometry Number Place", "Irregular Sudoku", "Kikagaku Nanpure") is to fill every row, column and sub-region with numbers 1-9 and each row, column, and sub-region must have each number exactly once.

This Jigsaw Sudoku book is packed with the following features:

• 500 Medium Jigsaw Sudoku Puzzles
• Answers to every puzzle are provided.
• Each puzzle is guaranteed to have only one solution.

• Includes free bonus puzzles you can download book (Tons of Sudoku Puzzles for Adults & Seniors)

• Includes free bonus puzzles you can download book (Word Search With Hidden Message: 102 Puzzles for Adults and Seniors)

Jigsaw Sudoku Puzzle Book is a collection of 500 Jigsaw sudoku puzzles. Part of the popular "Sudoku Puzzle Books" series, the book is designed to help keep your brain cognitively fit, flexible, and young.