Sudoku Solver

Use this standard 9x9 Sudoku solver to verify a puzzle, catch conflicts, or complete a partially filled grid. Enter the given clues with digits 1 to 9, then select Solve Sudoku.

How to use this Sudoku solver

Type the known values from your puzzle, leave unknown cells blank, and solve when you want to verify the full answer. In a valid 9x9 Sudoku, each row, column, and 3x3 box contains each digit from 1 to 9 exactly once.

Need another Sudoku page?

Play a fresh 9x9 Sudoku puzzle, solve a quicker 4x4 Sudoku grid, or switch to the advanced 16x16 Sudoku solver.