Sudoku

You've seen Sudoku in the newspaper, and now you can play the popular logic puzzles on your Android phone. Sudoku creates the crossword-like logic puzzles that exercise your brain without trivia, spelling, or ambiguous crossword clues. All you need is your thinking cap and knowledge of the numbers 1 through 9 (you don't even have to know them in counting order). Fill in the missing numbers to complete boxes, columns, and rows so that each contains the numbers 1 through 9. It's a deceptively simple idea for a challenging game.

Difficulty Levels:
- Easy
- Medium
- Hard