60,000 games on 6 levels. You can enjoy it anytime and anywhere. Of course, Sudoku X is free to play! ★ Introduction ★ Sudoku is famous for its fantastic puzzle game. Sudoku X adds a new diagonal rule to the popular Sudoku. You can enjoy this new type of Sudoku more. Sudoku X is a fun and entertaining app to help you develop and maintain brain skills like memory, concentration, and reasoning. It is great for brain training as well as killing time. ◆ About the function ◆ ★ Undo, Redo... It is a function to retrace your steps. ★ Pencil mark... It is a function of writing small numbers in the cell. ★ Check Error... This is a function to check your answer. ★ Highlighter... This is a function to find hidden spaces. ★ Technical Hint... This is a function that gives you a hint when you have no idea.
