*Specify the location of the first cell of your sudoku grid and its size[optional]:
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It's a web application and universal pencil puzzle editor capable of drawing many different kinds of pencil puzzles. You can download your puzzles as images and save puzzle links in the form of URLs to share with others.
Note: This is by no means an exhaustive list. Penpa+ is not affiliated with these sources. Please contact respective owners for any further information.