Title: My Big Book Of Soduku Puzzles Vol 1: 200 Difficult Sudoku Puzzles Edition, Author: Puzzle Crazy
Title: Sudoku 6 x 6 - 250 Kropki Puzzles - Mosaic: Excellent level, Author: Andrii Pitenko
Title: Sudoku A Game for Mathematicians 1600 Puzzles Very Easy to Hard Difficulty, Author: Kelly Johnson
Title: Sudoku A Game of Mathematicians 640 Puzzles Easy and Normal Difficulty, Author: Kelly Johnson
Title: Sudoku A Game of Mathematicians 640 Puzzles Medium to Hard Difficulty, Author: Kelly Johnson
Title: Sudoku A Game of Mathematicians 960 Puzzles Very Easy, Normal and Hard Difficulty, Author: Johnson
Title: Sudoku Book 1,500 Easy Puzzles: Sudoku Puzzle Book With Only One Level of Difficulty, Author: Sudoku Book
Title: Sudoku Strategy: Using number sets to solve difficult puzzles mentally, Author: Gino Cox
Title: The Big Book Of Sudoku: 800 Puzzles in 4 Levels, Author: William Brown MD
Title: The Mammoth Book of Sudoku, Author: N Haselbauer
Title: The Second Best Book of Sudoku Strategy: Using inductive reasoning to solve complex puzzles mentally, Author: Gino Cox
Title: Why and How Sudoku in Schools: A Low-Tech Tool to Train Brain Gain, Author: Jerry Martin
Title: Will Shortz Presents 1,001 Sudoku Puzzles to Do Right Now, Author: Will Shortz
Title: Will Shortz Presents Backyard Sudoku: 300 Easy to Hard Puzzles, Author: Will Shortz
Title: Will Shortz Presents Holiday Sudoku: 300 Easy to Hard Puzzles, Author: Will Shortz
Title: Will Shortz Presents Sudoku for Christmas: 300 Easy to Hard Puzzles, Author: Will Shortz
Title: Will Shortz Presents Supreme Sudoku: 1000 Wordless Crossword Puzzles, Author: Will Shortz
Title: Will Shortz Presents The Super-Colossal Book of Sudoku: 300 Wordless Crossword Puzzles, Author: Will Shortz