Sudoku puzzle of the day
Saturday April 22, 2017

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New! Metapuzzle™ books

Hooked on Sudoku?

Solve a new, innovative puzzle every day. We put a new Sudoku puzzle here every day of the year at 1200 EST/EDT (GMT -5/-6). On Monday, Wednesday, and Friday, the puzzle is ordinary. On Tuesday, Thursday, and Saturday, it includes diagonals. On Sunday, it is especially difficult and might require guessing. If you want to try a non-standard Sudoku-like puzzle, look at this one.

Stumped?

Get a hint here. Our innovative technology helps you to proceed when you get stuck without robbing you of any solving pleasure!

Not enough hints?

Here is today's solution.

Want a personal book of puzzles?

Send me a note indicating how many puzzles you want and what kind, and I can build you a PDF file tailored to your specifications. Puzzle types: classic (sizes 4, 9, 16, 25, 36, 49), diagonal (sizes 4, 9, 16, 25, 36, 49), centerdot (sizes 9, 25), multispot (sizes 5, 6, 7, 8, 9), multifour (sizes 8, 12), multi-9 (size 18). All puzzles can be generated to require no guesses or 1 guess. The price of the book depends on how many puzzles you want and how big they are. All puzzles come with hints and solutions.

Like what you see?

Buy our book All puzzles come with both hints and solutions.

Authors

Raphael Finkel (mail me: raphael at cs.uky.edu), Victor Marek, Mirek Truszczyński