Online Sodoku

Button: Check Checks if the puzzle is valid, can be solved and has a single solution. Button: Rate Difficulty Display a difficulty rating for the remaining unsolved cells of the puzzle.

Ratings are based on the techniques needed to solve the puzzle logically. Below is the list of ratings and associated solving techniques:.

Button: Hint Request a hint to find the next cell to solve. A hint will either identify a cell which can be solved or a cell or cells where candidates can be removed.

If candidates are entered on the grid, those candidates will be used to help provide a hint, otherwise the solver will generate the candidates in the background.

Please Note: If the candidates entered are wrong or incomplete, the solver will not be able to provide a correct hint. Button: Generate Generate candidate values for all empty cells Button: Remove Removes all candidates from all cells Checkbox: Edit Candidates When checked candidates can be edited using the keyboard You can edit candidates using the keyboard or the mouse.

Editing Candidates using the Keyboard - Click the Edit Candidates checkbox first. Button: Load Load a saved puzzle into the grid.

Button: Save Save the puzzle currently displayed in the grid. Button: Seed Seed the grid from a pasted character string Button: Print Print the contents of the grid Button: Clear Reset the grid.

Empties all cells and removes all candidates Button: Undo Revert changes one by one. Thousands of free puzzles in varying grades of difficulty are available.

Just click on the relevant sample button on the right hand side to load a puzzle of that difficulty to the grid. The community site is a members only version of sudoku-solutions.

To access the community site click the Login button below. To sign-up as a new member click the Register button below.

Here you can save the puzzle currently displayed in the grid in the database area reserved for your username. The puzzle will be saved with the current date and time to help you identify the puzzle later.

Additionally In the Comment field below you can optionally add a short descriptive note. Javascript is disabled in your browser.

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Sudoku Solver. Naked Subsets. Hidden Subsets. Privacy Policy. Candidate Editing via the keyboard is active. Solve Cell. Solve Partially.

Rate Difficulty. About this Sudoku Solver This solver offers a number of features to help you improve your solving skills and practice solving strategies.

Solve Features Enter the numbers of the puzzle you want to solve in the grid. Helper Features The solver provides several analysis features which allow you to check if a puzzle is valid, rate the difficulty of a puzzle or get hints on how to solve a puzzle step by step.

Button: Check Checks if the puzzle is valid, can be solved and has a single solution Button: Rate Difficulty Display a difficulty rating for the remaining unsolved cells of the puzzle.

Below is the list of ratings and associated solving techniques: Rating. Christmas Sudoku. Easter Sudoku. Halloween Sudoku. Thanksgiving Sudoku.

New Years Sudoku. Valentine Sudoku. St Patricks Sudoku. Cinco de Mayo Sudoku. More Games Solitaire. Video Poker. Word Seach. More Games. Sudoku News Sudoku Features.

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Game loading. Play Free Sudoku Now! About Sudoku The popular Japanese puzzle game Sudoku is based on the logical placement of numbers. Sudoku Tips Sudoku is a fun puzzle game once you get the hang of it.

Work through the remaining empty cells, trying the numbers that have not been used. Tip 2: Break the grid up visually into 3 columns and 3 rows.

Now, look for columns or grids that have 2 of the same number. Logically, there must be a 3rd copy of the same number in the only remaining 9-cell section.