Black Belt Sudoku Variants : 300 Puzzles by Conceptis Puzzles

Get ready to fight your way to the top of the sudoku ranks!?Each book in this Martial Arts sudoku series will contain 300 puzzles, with a different blend of sudoku variants depending on the difficulty level. Black Belt Sudoku Variants will feature variants with the most fiendish twists.
Binding: Paperback / softback