Sudoku Generator & Solver
Generate Sudoku puzzles at four difficulties — and solve any puzzle you paste in.
Or solve any puzzle
Paste 9 lines of 9 digits. Use 0 or . for empties.
About this tool
Generate a fresh 9×9 Sudoku puzzle (Easy / Medium / Hard / Evil), play it in-page, and reveal the solution. Or paste an unsolved puzzle (use 0 or . for empties) and solve it via backtracking.