The puzzles in this collection of treacherously difficult puzzles will stretch even the most advanced Su Doku enthusiast. You will need to use all of your best
The toughest sudoku book Sudokus are puzzle games which originated in Japan and rely on number logic to solve them. You are not required to know any equations o
From Nikoli, the Japanese puzzle company that created the sudoku craze, comesa title that starts at hard and goes to a level of difficulty not seen in anyprevio
Hard to Extreme Sudoku Puzzles with Full Solutions - Volume 2 Playing Sudoku is addictive, and you can never have enough puzzles. When you become a skilled play
Expert Sudoku is an all-new collection of handcrafted puzzles for the expert puzzle-solver. This is the book that challenges skilled solvers and Sudoku-lovers a
