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Hexadecimal Sudoku

At the request of a few persistent (and possibly masochistic) puzzle fans, I’ve added four collections of Hexadecimal Sudoku to the puzzle collection. These are 16 x 16 puzzles that use the 16 hexadecimal digits (0-F), instead of the nine digits used in regular Sudoku puzzles.

This is a good puzzle to take on your next trip to the doctor’s office during this flu season, as it takes a lot longer to solve!


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