Simple Sudoku

Thanks - play Sudoku with no interruption and enjoy a quite moment. Keep your brains active. Thanks for supporting the up-keep of the account.

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Current version of Open Sudoku is authored by [Óscar García Amor]

The first version of Open Sudoku was developed by [Roman Mašek]

and

was contributed to by Vit Hnilica, Martin Sobola, Martin Helff, and Diego Pierotto.