Learn

Articles, tutorials, and tips to help you climb the Sudoku mountain. Start with the basics, work up to the techniques that crack expert puzzles, and understand why a daily Sudoku habit is one of the better things you can do for your brain.

Rules & basics

Start here — how each variant works, why the rules exist, and how to read a grid without the basic stuff getting in your way.

Techniques

Naked pairs, hidden singles, X-wings, cage combinations — the logic patterns that separate easy puzzles from expert ones.

Variants

Beyond Classic: how Killer, Kakuro, and other cousins change the constraints and the kind of thinking each one rewards.

Habit & wellness

The research on focus, working memory, and why a daily puzzle habit sticks better than most brain-training apps.