Play is smooth because you don’t have to take your eyes away from the board when entering numbers. Also, if you use the NumLock feature, repeatedly entering the same number is made simple. It has been perfected into a Sudoku(Number Place) app with stress free input. ◆◇◆ About the puzzles ◆◇◆ As well as 3 levels of difficulty, -- including 4000 over puzzles -- 3 levels of difficulty -- 6x6 grid Mini Sudoku -- Diagonal Sudoku -- Jigsaw Sudoku -- you can even scan puzzles that you’re interested in from magazines and play them! It’s a Sudoku(Number Place) game that you can play forever without getting bored. URL Scheme cgtSudoku:// cgtSudoku://?m=[mode:1..4]&n=[puzzleNo:1..1000]