Editorial policy
Sudoku Online’s lessons, guides and history pages are written to be checked: numbers come from the site’s own scripts and data, walkthroughs use real stored puzzles, and history pages cite named sources and say where they disagree. Content is drafted with the help of AI tools and reviewed before it is published.
The site’s grading is its own method, and we label it that way. Errors are corrected openly. This page explains the process.
Who writes the content?
The material is prepared by Sudoku Online Editorial Team. Drafts are written with the help of AI tools and then checked against the site’s own data and scripts and reviewed by a person before publication. The tools help with drafting. They are not treated as a source of facts, and a claim is kept only if it can be supported as described below.
How do we check facts?
- Numbers come from the site’s own data. Counts, percentages and puzzle statistics are computed from the stored puzzle files by scripts kept with the site, and the pages say how many puzzles were counted. Where a sample is small, the page says so.
- Examples are real. A walkthrough uses a stored puzzle from the site’s pools, and each step is rechecked against the board. Technique diagrams are drawn from real positions and tested to show only true placements and eliminations.
- History and mathematics cite sources. Each history page ends with a list of the sources that were opened, with the title and address. A reference that was cited by a source but not opened is labeled as such.
- Disagreements are shown. When sources give different dates or credit different people, the page states both and does not choose quietly.
- Our own arithmetic is labeled. When a page calculates something to check a published figure, it says so.
What is this site’s own method?
The five difficulty levels, the technique ordering, the hint levels and the daily schedule are this site’s own design, not an official or industry standard. Pages that describe them say so. Opinions, such as which technique to learn first, are presented as guidance and are tied to the site’s data where possible.
What do we not do?
- We do not present invented numbers, quotes, reviews or ratings.
- We do not copy puzzles, text or diagrams from other sites or books.
- We do not publish sponsored content or paid reviews. Advertising is shown separately and does not affect which techniques we teach or how puzzles are graded.
- We do not backdate pages. Publication dates are the days pages actually went live.
How are errors corrected?
If you spot a mistake, tell us through the contact page or at [email protected], with the page and the claim in question. We check it against the data or the sources. If it is wrong, we fix the page, and for a substantial correction we note the change on the page and update its modified date. If a source turns out to be unreliable, we replace it.
What do we ask of the people who use the site?
Treat the lessons as a way to learn, and check anything important for yourself. The grading guide and the generation guide show how the site’s puzzles are made, so you can judge the method. The about page describes the site as a whole.