Sudoku solver

Stuck on a puzzle from the paper, a book or an app? Type it in here and the solver will help.

Tap a cell and enter the digits as they appear in your puzzle. Leave the empty cells blank. When you are ready, press Solve.

First, the solver checks your puzzle. A proper sudoku has exactly one solution. If yours has none, there is probably a typing mistake, so check the digits you entered. If it has more than one, some givens may be missing.

Then you choose how much help you want:

• Step by step: see each move in order, with the cells involved and the name of the technique used. Every technique links to its guide, so you can learn as you go.
• Just the answer: the finished grid, all at once.