Sudoku

How to Play Sudoku

Fill the 9 by 9 grid so every row, column, and 3 by 3 box contains the digits 1 through 9.

Controls

Select a square, then choose a number from the keypad.

Goal

Complete the puzzle without repeating a number in any row, column, or box.

Tips

Start with rows, columns, or boxes that have the most givens.
Use elimination before guessing.
Check each number against its row, column, and box before placing it.