Play sudoku puzzles online.

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You are playing the puzzle that was published on Wednesday, 21st of October 2020.

This puzzle is rated difficult (difficult).

Hover the mouse over the grid. Type the number you want to enter in the cell. Use the space bar to toggle between entering final numbers or pencil marks.

Alternatively, when you click on the cell you want to change, a selector pops up.

On the selector, click on a small number to toggle a pencil mark, or click on a big number to insert a final value in the cell.

For quicker input using the mouse try selecting 'Small selector' from the options menu.

Be sure to check the instruction manual (opens in a new page) to discover all the features of this online sudoku player.

Caution: leaving this page without saving will erase the current progress.