X-Treme Sudoku

Get Well Funny Gift For Men: Adult Variety Puzzle and Activity Book - Word Search, Crossword, Funny Quotes and Phrases to Solve, Cryptograms, Trivia, Sudoku, Mazes and More!

The True Crime Puzzle Book: Over 90 Puzzling Cases to Solve

Will Shortz Presents Sweater Weather Sudoku: 200 Challenging Puzzles: Hard Sudoku Volume 2 (Hard Sudoku, 2)

Mensa® Mind Benders: 100 Logic Games and Puzzles to Improve Your Memory, Exercise Your Brain, and Keep Your Mind Sharp (Mensa's Brilliant Brain Workouts)

Will Shortz Presents Sleepy Sudoku: 200 Easy to Hard Puzzles

Funster Healthy Brain Activity Book - Large Print Easy Puzzles for Adults: 100+ Puzzles: Word Search, Sudoku, Crosswords, and much more

Pocket Sudoku - a compact & travel-friendly puzzle book: only 4 x 6 inches in size | 5 Difficulty Levels | easy - normal - hard - very hard - extreme | 150+ Grids With Answers At The Back

Cuckoo Sudoku: Sudoku Variants That Will Drive You Batty

The Million Word Crossword Dictionary, 2nd Edition