Sudoku Pro-Number Puzzle Games app for iPhone and iPad

With Sudoku you now have the famous logic puzzle always with you - for free and offline. Infinite number of Sudoku games guarantee unlimited gameplay. Choose your level of difficulty, use the additional help functions, celebrate your achievements and conquer the leaderboards. With this free Sudoku game you will never run out of puzzles again!
• Infinite number of Sudoku games by random generation of puzzles
• It can solve puzzle step by step, and show the solving techniques like PAIR/WING/UR/AIC...
• 10000 fixed puzzles, and endless random puzzles.
• Supports 4X4, 6X6, 8X8, 9X9 grid sizes.

Optional help functions:
• Input buttons are dimmed when a number is used 9 times (or more)
• Automatic checking whether the newly entered number is correct
• Highlighting of row, column and box of the currently selected field
• Highlighting of all fields which have the same value as the currently selected input button

How to play Sudoku?
The playing field is a square consisting of 9 rows and columns, additionally divided into 3x3 blocks, each with 9 fields. The aim of the game is to fill in the fields of the rows, columns and blocks with the numbers from 1 to 9. The given clues can not be changed. All empty fields must be filled in a way that any number from 1 to 9 appears in each row, in each column and in each block exactly once.

NOTE: This app includes advertisements to allow offering this game for free. The app itself can be used offline / without an internet connection!