A SIMPLE KEY FOR EASY SUDOKU UNVEILED

In order to clear a specific sq., make sure that square is chosen and is particularly in gentle blue. Simply click/contact the eraser icon. If there is a range in that sq., It's going to be taken off. Should you simply click/touch it yet again, any pencil marks in that sq. will be removed.You're supplied a square 9x9 grid. Some cells are vacant, so