Collins Puzzles

Big Book of Su Doku 9: 300 Su Doku Puzzles - Collins Su Doku Collins Puzzles

Keep your brain busy at home with everyday puzzles. A bumper collection of easy, medium and difficult Su Doku puzzles to test your mental dexterity, powers of logic and deduction. You will find 100 easy, 100 medium and 100 hard puzzles in this collection so you can gauge your progression through the difficulty levels.