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 785 Free puzzles

Try out the Android version for smartphones. More information is available here.

How to use

This solver offers a number of features to help you improve your solving skills and practice solving strategies. First enter the numbers of the sudoku directly in the grid or enter them via the "Load" and "Seed" buttons. You can then completely solve the puzzle or use the appropriate buttons to check the validity of the puzzle, get tips for step by step solving and much more. See the button descriptions below for more information.

This is what the buttons do: