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

Warning:Not for the Sudoku faint-of-heart! Introducing a book of extra tough, extra thorny—and extra addictive—puzzles specially designed for people with Ei

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

Welcome to the 9 Circles of Sudoku Hell! From Merciless to Maddening to Murderous, this is a book to challenge even the most seasoned Sudokuist. By the end of t

Here it comes: a revolution in sudoku solving! This is by far the most complete guide to cracking these addictive puzzles ever produced, with tricks even the ex