Play over 500 levels of Sudoku in four different formats! Bricks, Argyle, Sudoky DG, and Anti-Diagonal! All levels can be solved entirely by logic!The Game Includes: • 600 Sudoku boards! • 4 variations of sudoku! • 100% solvable by logic! • Anti-Diagonal, Argyle, Sudoky DG and … [Read more...] about Sudoku Variants