Will Shortz Presents Ferocious Sudoku: 200 Hard Puzzles
Are you tough enough? Take on this collection of 200 devilishly difficult sudoku puzzles! Includes: -200 hard puzzles-Perfect portable size-Big grids for easy solving More »
Are you tough enough? Take on this collection of 200 devilishly difficult sudoku puzzles! Includes: -200 hard puzzles-Perfect portable size-Big grids for easy solving More »