Sudoku

How to play

Fill the grid so every row, column, and 3x3 box contains each number from 1 to 9 exactly once.

• Tap a square, then tap a keypad number to enter it.
• On a keyboard, use 1-9 to enter numbers, arrow keys to move, Backspace/Delete to erase, and C for Candidates.
• Turn on Candidates to add or remove pencil marks manually.
• Auto candidates can show possible numbers for empty squares.
• Auto-check highlights incorrect entries while you play.
• Hint points to a logical next step. Press it again to move to another hint position.
• The puzzle URL uses the short puzzle ID, while your in-progress board is saved on this device.