For confident players only!

With a separate sudoku book for every level, this work helps puzzle lovers play this popular game...

In this three-book series, each book helps solvers build their skills to get from one level to th...

In this three-book series, each book helps solvers build their skills to get from one level to th...

In this three-book series, each book helps solvers build their skills to get from one level to th...

Love cryptograms? We’ve got lotsa them for the avid solver—600 puzzles that are funny, punny, and...

Gluttons for punishment rejoice! The popular series of ultrahard sudoku is back. Just when it see...

Gluttons for punishment rejoice! The popular series of ultrahard sudoku is back. Just when it see...

Gluttons for punishment rejoice! The popular series of ultrahard sudoku is back. Just when it see...

Gluttons for punishment rejoice! The popular series of ultrahard sudoku is back. Just when it see...

This edition provides the reader with an introduction to this subject. During the past five years...

With every puzzle requiring upper-level strategies, this collection packs even more of a punch th...

Everyone loves sudoku puzzles, finding them impossible to put down. The only problem: having enou...

The difficulty level soars, as even more tricks get added to the mix: X-Wing; Swordfish; XY-Wing;...

Sudoku super-master Frank Longo and mental_floss, the magazine for trivia lovers, bring fans a co...

Sudoku designers the world over will weep and gnash their teeth at the revelations in this compre...

For diehards only! These incredibly difficult puzzles are handcrafted for the sudoku warrior who ...

The fun begins with subsets and interaction.

Lounging by the pool is a great way to spend some leisure time, and great sudoku puzzles make it ...

Top solvers can try their hand at the One-Sided Gordonian Rectangle; Extended Gordonian Rectangle...

Only diehards need apply! These incredibly difficult sudoku are made to challenge even the most e...

For beginners who want a gentle mental workout

With a separate sudoku book for every level, this work helps puzzle lovers play this popular game...

E. B. Wilson stated in the preface to the third edition of The Cell in Development and Heredity: ...

Even more interaction--this time used in combination with other procedures...and a 'lot' more hea...

Watch out--these sudoku might crush even the most stalwart of solvers!

In this book, prolific sudoku creator Frank Longo provides 100 classic sudoku, all from easy to m...

With more than 900 puzzles at all difficulty levels (gradually increasing from easy to medium to ...

The logical choice for lavatory reading. Easy sudoku are perfect for solving when you have a few ...

If you're going to be sitting in one place for a while, a tricky sudoku is just the thing to pass...

Sudoku Puzzles for a Road Trip

Sudoku Puzzles for the Weekend

A collection of 105 easy to hard sudoku puzzles that will provide a perfect (and perfectly portab...