Big Book of Su Doku Book 6: 300 Su Doku Puzzlesvolume 6Paperback, 1 February 2020

A bumper collection of easy, medium, and difficult Su Doku puzzles to test your mental dexterity, powers of logic, and deduction. Keep your mind sharp and test your powers of deductive reasoning. Ideal for whiling away those long commutes, traveling, or relaxing at home. Includes brand new Collins-branded content with 3 levels of difficulty.