Sudoku is based around a 9 x 9 grid, divided into smaller 3 x 3 sections. Some cells are pre-populated with the numbers 1 to 9. Your task is to fill the remaining empty cells, so that each row, column and region contains one instance of every number from 1 to 9. Over 100,000 puzzles and 2 modes, each with 3 skill levels. Easy to use touch screen input. Pause feature. Spare stylus included.