It is easy to determine the missing digit as soon as its location has been identified! See the developer's page for more information on level 1 sudokus. If you plan to spend hours on solving sudokus you should definitely afford an ad-free App with selected sudokus! App features: * Library with 100 carefully selected level 1 sudokus. * User-interface that also can be operated by fat fingers. * Unlimited undo- and redo- memory. * Hi-light all digits of some kind, for exemple all 5:s * Ability to make small notes in every cell (pencil marks).