Sudoku is a logic puzzle and the goal is to fill in the numbers from 1 to 9 in a 9 × 9 grid so that each number in each column, row and block (3 × 3) occurs only once. Game Features: ★ 3 levels of difficulty ★ Hints ★ Representation of the sectional fields ★ Edit your own puzzles ★ Quick solution calculation ★ Undo and Redo function ★ Automatic saving of the last game ★ Timer ★ load/save played Sudokus With Sudoku Trainer Free can train and perfect your Sudoku Skills The creation and solving of sudoku puzzles are the core strengths of this app !