Sudoku blog
Tips, benefits, and ideas for playing Sudoku. Improve focus, find the best time to play, and relax with puzzles.

Share a puzzle with a link
Same grid for everyone. There is a share button at the top so you can pass the exact puzzle around, whether you started it on the site or in the app.
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Killer Sudoku Is Now in Coffee Sudoku
I added cages. The numbers have to add up now. It changes how you think about the whole grid.
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Why I Created Coffee Sudoku
I was tired. Every app had something wrong with it. So I made one that didn't.
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Why Sudoku Improves Focus and Concentration
I thought it was a gimmick. Turns out doing a few a day did something. Could be the puzzles, could be something else. Either way.
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The Best Time of Day to Play Sudoku
There isn't one. But when you do it matters less than that you do it. A few things I've figured out.
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How Sudoku Reduces Stress and Calms the Mind
It's not meditation. But it does give your brain one job. That can be enough.
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Sudoku Strategies for Beginners: Where to Start
Stuck on where to begin? Two things got me through my first fifty puzzles. Nothing fancy.
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10 Sudoku Tips and Tricks to Solve Puzzles Faster
Not really ten. More like a handful of things that actually helped me. Your list might be different.
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Why Solving a Daily Sudoku Puzzle Is Good for You
One a day. That's the bit that actually stuck for me. Why it might be enough.
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Sudoku and Brain Health: What the Research Says
I looked this up. The science is there but it's not a miracle. Quick version.
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Sudoku vs Crossword Puzzles: Which Is Better for Your Brain?
Different. I do both. Crosswords for words, Sudoku when I want to switch off language.
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How to Get Faster at Sudoku Without Sacrificing Accuracy
Speed came for me when I stopped rushing. Weirdly. A few things that helped.
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Sudoku for Kids and Families: A Fun Way to Learn Logic
Kids can do it. Mine started on 4x4. We do one together sometimes. Gets messy. Good messy.
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Play Sudoku online
A free web puzzle with classic, Zen, and Redacted modes.
Open the web board