Hexadecimal Sudoku Puzzles by Krazydad

Hundreds of free Hexadecimal Sudoku puzzles for printing.

Is there any way to generate 10000 solved sudokus faster than 1 second in C? - Quora

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Jigsaw Sudoku by Krazydad, PDF, Games Of Mental Skill

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Types of Sudoku puzzles

Hexadecimal Sudoku Puzzles by Krazydad

Does an inability to complete a Sudoku mean you are unintelligent? The hardest ones I have are 3x3 with 23 clues. My record for this is 1:59. - Quora

The new Sudoku

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Printable Puzzles by KrazyDad

Printable Puzzles by KrazyDad

Printable Puzzles by KrazyDad

5x5 Kakuro Puzzles by KrazyDad, Volume 2, Book

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Interactive Jigsaw Sudoku by KrazyDad