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Learn to solve sudoku with notes
Practical guides to solving without guessing, written around the Nomeku method. Start with the first one if you’re new.
How to Solve Sudoku Without Guessing
A complete approach that works from easy to extreme.
Read ▸Sudoku Notes, Pencil Marks and Candidates, Explained
What a note really means, and how to take notes you can trust.
Read ▸The Two-Candidate Rule: When to Write a Sudoku Note
The single rule that keeps your notes clean and meaningful.
Read ▸Stuck on a Sudoku? Test, Don’t Guess — Temp Mode
How to test a candidate safely and prove the answer by contradiction.
Read ▸Sudoku and the Brain: What Brain-Imaging Research Shows
What a 2026 review of brain-imaging studies found — and its limits.
Read ▸Prefer the whole picture?
The Method explains Nomeku end to end, and How to Play covers every button in the app.