Also the puzzle may contain the regions of random (irregular) shape; this variant is called Jigsaw Sudoku

From krazydad, constructor of the wildly popular and addictive puzzles published in The New York Times as Two Not Touch, here are 360 of your favorite Star Battle puzzles. These puzzles will provide a healthy diversion for you in these challenging times, and help you make it to the other side with your sanity intact! Includes an instructive and pithy tutorial.

This medium sudoku puzzle book has been designed for fun for all ages and can be played by children, adults and senior citizens alike - suitable for all intermediate sudoku puzzle lovers!. Perfect for stimulating the mind and improving reasoning skills, this book contains 200 medium difficulty level sudoku puzzles with solutions for each of the puzzles. A 'Beginners Guide' is included providing valuable tips and tricks for solving the puzzles. Whatever your age, you'll love this medium sudoku puzzle book! This puzzle book is an ideal challenge for the intermediate Sudoku player and will provide hours of puzzling fun and enjoyment.

Hungry for more sudoku? Once you've mastered the easy puzzles it's time to take it up a notch! This book is the second in the series that starts with Will Shortz Presents Single Scoop Sudoku and ends with Will Shortz Presents Triple Threat Sudoku. Includes: -200 medium-level puzzles -Perfect portable size -Edited by Will Shortz

Hungry for more sudoku? Once you've mastered the easy puzzles it's time to take it up a notch! This book is the second in the series that starts with Will Shortz Presents Ferociously Fun Sudoku and ends with Will Shortz Presents Fascinatingly Fierce Sudoku. Includes: -200 medium-level puzzles -Perfect portable size -Edited by Will Shortz

The hottest puzzle craze in the nation heats up with this new collection of 150 Sudoku puzzles from the #1 name in American puzzling. Original.

Once you've mastered the easy puzzles it's time to take it up a notch Includes: -200 medium-level puzzles -Perfect portable size -Edited by Will Shortz