Sudoku Solver - Solve Your Sudoku Puzzles

 

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Learn Sudoku Solving Techniques by Examples:

Solve a random puzzle with Smart Solver

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Free Online Sudoku Solver

This free online Sudoku solver can solve any valid Sudoku puzzles with a smart option to show the rationale of each step - a good way to learn the solving techniques by examples.

Smart Solver

Our new smart solver not only gives the solution for a puzzle, but also explains every step with demonstrations in the grid. You may learn Sudoku solving techniques through examples with numerous puzzles from our database. Try Smart Solver now.

Quick Start

Select a digit on the right side bar first. Then click on the cells where you want to place the selected digit. After entering your puzzle, press either the "Solution" button for an instant solution or the "Solve with Smart Solver" button to bring up our smart solver.