Frank Longo

Second-Degree Black Belt Sudoku (Martial Arts Sudoku)

Frank Longo

$4.79 - $10.22

Beyond Black Belt Sudoku: If you have to ask, it's too hard for you.

Frank Longo

$5.69 - $10.97

Second-Degree Brown Belt Sudoku (Martial Arts Sudoku)

Frank Longo

$4.89 - $11.30

Third-Degree Black Belt Sudoku (Martial Arts Sudoku)

Frank Longo

$6.59 - $9.92

Puzzlewright Guide to Solving Sudoku: Hundreds of Puzzles Plus Techniques to Help You Crack Them All

Frank Longo

$16.08

1036 Extreme Sudoku Challenges: Not-So-Easy to Tough Puzzles

Frank Longo

$7.19 - $8.59

The Big Book of Wordoku Puzzles: Sudoku for Word Lovers (Wordoku)

Frank Longo

$24.59

Mensa Absolutely Nasty Sudoku Level 4 (Mensa)

Frank Longo

$6.39 - $11.30

Second-Degree Green Belt Sudoku (Martial Arts Sudoku)

Frank Longo

$4.79 - $10.97

The Nastiest Sudoku Book Ever

Frank Longo

$6.39 - $14.53

Mensa Absolutely Nasty Sudoku Level 2 (Mensa)

Frank Longo

$7.99 - $11.30

Second-Degree White Belt Sudoku (Martial Arts Sudoku)

Frank Longo

$5.19 - $5.49

Way Beyond Black Belt Sudoku®

Frank Longo

$11.29

Mensa Absolutely Nasty Sudoku Level 1 (Mensa)

Frank Longo

$8.99 - $11.30

Poolside Sudoku

Frank Longo

$6.79 - $10.97

The Official Book of Wordoku: Sudoku Puzzles for Word Lovers

Frank Longo

$5.99 - $6.29

Third-Degree Brown Belt Sudoku®

Frank Longo

$10.29 - $10.97

Absolutely Nasty Sudoku Level 3

Frank Longo

$6.59 - $10.97

Word Search Sudoku (Mensa)

Frank Longo

$7.19 - $18.29

The Sudoku Code: 200 Sudoku Puzzles. One Answer. Can You Find It?

Frank Longo

$7.99

Third-Degree White Belt Sudoku®

Frank Longo

$5.89 - $11.30

10 x 10 Sudoku

Frank Longo

$36.59

The World's Longest Sudoku Puzzle (Sudoku)

Frank Longo

$4.99 - $5.19

The World's Longest Crossword Puzzle

Frank Longo

$12.69 - $14.59

Big Book of White Belt Sudoku

Frank Longo

$13.59

Ninja Assassin Sudoku: Brown Belt

Frank Longo

$5.09 - $5.89

Sweet Smell of Crosswords

Frank Longo

$13.39

Magnetic Sudoku

Frank Longo

$7.69 - $8.69

SCRABBLE-doku

Frank Longo

$5.49

SCRABBLE Crosswords

Frank Longo

$5.59