Articles
Evidence-based guides to visual, number-free sudoku — the brain, the shapes, and the play.
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Is Sudoku Good for Your Brain? An Honest Look at the Evidence
Does sudoku actually make you smarter or protect your memory? Here's what the research shows — and what it doesn't — for sudoku and other logic puzzles.
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Sudoku for Seniors: Why the Number-Free Version Often Works Better
Why sudoku suits older players so well — and why a shape-based, number-free version can be easier to read, less stressful, and just as good a mental workout.
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Why an Ad-Free Sudoku Actually Matters
Ads, trackers and paywalls quietly wreck the one thing a sudoku is for — calm focus. Here's what 'ad-free' should really mean, and why it's worth looking for.