Sudokoen.com <Play a Sudoku>

1 2 3 4 5 6 7 8 9	31 2 3 4 5 6 7 8 9	61 2 3 4 5 6 7 8 9
1 2 3 4 5 6 7 8 9	91 2 3 4 5 6 7 8 9	81 2 3 4 5 6 7 8 9
1 2 3 4 5 6 7 8 9	1 2 3 4 5 6 7 8 9	21 2 3 4 5 6 7 8 9

1 2 3 4 5 6 7 8 9	11 2 3 4 5 6 7 8 9	41 2 3 4 5 6 7 8 9
1 2 3 4 5 6 7 8 9	1 2 3 4 5 6 7 8 9	1 2 3 4 5 6 7 8 9
71 2 3 4 5 6 7 8 9	1 2 3 4 5 6 7 8 9	1 2 3 4 5 6 7 8 9

1 2 3 4 5 6 7 8 9	91 2 3 4 5 6 7 8 9	1 2 3 4 5 6 7 8 9
1 2 3 4 5 6 7 8 9	1 2 3 4 5 6 7 8 9	1 2 3 4 5 6 7 8 9
1 2 3 4 5 6 7 8 9	1 2 3 4 5 6 7 8 9	31 2 3 4 5 6 7 8 9

1 2 3 4 5 6 7 8 9	1 2 3 4 5 6 7 8 9	1 2 3 4 5 6 7 8 9
1 2 3 4 5 6 7 8 9	21 2 3 4 5 6 7 8 9	1 2 3 4 5 6 7 8 9
1 2 3 4 5 6 7 8 9	1 2 3 4 5 6 7 8 9	41 2 3 4 5 6 7 8 9

91 2 3 4 5 6 7 8 9	81 2 3 4 5 6 7 8 9	1 2 3 4 5 6 7 8 9
1 2 3 4 5 6 7 8 9	1 2 3 4 5 6 7 8 9	1 2 3 4 5 6 7 8 9
1 2 3 4 5 6 7 8 9	61 2 3 4 5 6 7 8 9	21 2 3 4 5 6 7 8 9

41 2 3 4 5 6 7 8 9	1 2 3 4 5 6 7 8 9	1 2 3 4 5 6 7 8 9
1 2 3 4 5 6 7 8 9	61 2 3 4 5 6 7 8 9	1 2 3 4 5 6 7 8 9
1 2 3 4 5 6 7 8 9	1 2 3 4 5 6 7 8 9	1 2 3 4 5 6 7 8 9

91 2 3 4 5 6 7 8 9	1 2 3 4 5 6 7 8 9	1 2 3 4 5 6 7 8 9
1 2 3 4 5 6 7 8 9	1 2 3 4 5 6 7 8 9	1 2 3 4 5 6 7 8 9
1 2 3 4 5 6 7 8 9	71 2 3 4 5 6 7 8 9	1 2 3 4 5 6 7 8 9

1 2 3 4 5 6 7 8 9	1 2 3 4 5 6 7 8 9	81 2 3 4 5 6 7 8 9
1 2 3 4 5 6 7 8 9	1 2 3 4 5 6 7 8 9	1 2 3 4 5 6 7 8 9
41 2 3 4 5 6 7 8 9	31 2 3 4 5 6 7 8 9	1 2 3 4 5 6 7 8 9

71 2 3 4 5 6 7 8 9	1 2 3 4 5 6 7 8 9	1 2 3 4 5 6 7 8 9
91 2 3 4 5 6 7 8 9	51 2 3 4 5 6 7 8 9	1 2 3 4 5 6 7 8 9
21 2 3 4 5 6 7 8 9	81 2 3 4 5 6 7 8 9	1 2 3 4 5 6 7 8 9

Single-click: mark as a possible solution. Double-click: mark as the solution. Click How to play to learn more about how to use the controls in solving the sudoku. Click Undo to undo the previous move. Coming soon Click Redo to redo the last move that you've undone. Coming soon Click Start a new sudoku to start over with a fresh new sudoku with your preferred difficulty level. Click Show mistakes to mark all the cells that contain an incorrect solution. The cells will be marked for 10 seconds. Click Give me a hint to give the solution of a random cell, while also giving an explanation on why this is the solution. Coming soon This shows the amount of time that you've spent on this sudoku. This shows the number of times you've used the 'Show mistakes' option. This shows the number of times you've used the 'Give me a hint' option.

I'm looking for any mistakes, please hold on a few seconds...

I'm trying to come up with a nice shiny hint, please bare with me...

The short explanation

Click on a number once to mark it as a possible solution of that cell.
Double-click on a number to mark it as the solution of that cell.

The detailed explanation

Move your mousepointer over a sudoku cell to bring up the nine possible numbers.
Click on one of the numbers once to mark it as a possible solution of that cell. All marked numbers will remain visible when you move the mousepointer out of the cell.
Click on a marked number once again to remove that mark.
Click on a number twice (double-click) to mark that number as the solution of that cell. The number will increase in size.
Click on a solved number twice again to remove the solution and return to the state prior to marking that cell as solved.
Cells containing the initial numbers cannot be changed.

What do the buttons on the right do?

Click on "Start a new sudoku" to start over with a new sudoku.
Click on "Undo" to undo your last action. Click "Redo" to undo your last undo action.
Click on "Show mistakes" to mark all cells that contain an incorrect solution.
Click on "Give me a hint" if you want the computer to show you the solutions of a random cell. An explanation will also be given. If the sudoku contains a mistake, no hint will be given.

It's seems that you have made a mistake solving this sudoku. No worries, just try again and prove that you are the sudoku champion I always thought you were.

You can always get some help by using the 'Give me a hint' or the 'Show mistakes' buttons.

Close this popup and let's see if you can spot the mistake.

Very well done! You solved this sudoku like a real Japanese pro. The numbers seem to have no secrets for you.

Let's see if you can do one more and this time maybe one that's even more difficult.

Close this popup and click 'Start a new sudoku' to start over with a fresh sudoku