Sudoku Genius: 144 of the Most Fiendish Puzzles Ever Devised

By (author): "Tom Sheldon"
Sudoku Genius: 144 of the Most Fiendish Puzzles Ever Devised
ISBN0452287502
ISBN139780452287501
AsinSudoku Genius: 144 of the Most Fiendish Puzzles Ever Devised
Original titleSudoku Genius: 144 of the Most Fiendish Puzzles Ever Devised