Solving is fun and easy! All Sudoku number puzzles in this Penny Dell Sudoku app offer an exciting balance between challenge and great puzzle entertainment. Whether you’re a novice or a seasoned solver, we have the perfect Sudoku puzzles for you. Remember, solving sudoku number puzzles is easy and does not require math skills. This FREE app includes all these great solving features for endless Sudoku solving enjoyment: • 4 difficulty levels - Easy, Medium, Hard and Expert - you choose! • Optional timer shows your solving speed • Candidates mode offers a handy way to take notes • Complete Help section teaches you to solve Sudoku puzzles • Use Hints to Show Errors, Solve Any Cell or Solve A Random Cell Happy Solving!