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Official Description

Max the Sudoku
A sudoku game Pro puzzle contains a database with 1500 puzzles
  3 levels of difficulty easy, medium and hard
  Buttons and modern, lightweight design
  Tmer, high scores

* Click the gear to choose the language
* Click the gear to choose the theme
* Click on the sound note to turn the sound on or off
* You can reset the game in scores
* Button of "?" numbers tips
* Play with help or without help