Sudoku Puzzle Solver

Type in the numbers from your 9x9 Sudoku grid, leave the empty cells blank, and get the fully solved puzzle in one click.

Fill in the known numbers on the left, then hit Solve. Solved cells will be highlighted in green.

How It Works

Solve Any Sudoku in 3 Steps

1️⃣

Type the numbers you already have into the 9x9 grid.

2️⃣

Our backtracking algorithm fills in every remaining cell.

3️⃣

Use the completed grid to check or finish your puzzle.

⚡

Solves in milliseconds, right in your browser.

Questions

Does this work for any valid Sudoku puzzle? +

Yes — as long as the puzzle you entered has a valid solution, the solver will find it, no matter the difficulty.

What if my puzzle has no solution? +

The solver will let you know it couldn't find a valid solution — double-check the numbers you entered for typos.

Can I use this to check my own answer? +

Absolutely — enter your starting clues and compare the solved grid against your completed puzzle.

Keep Solving

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