Talk to us

Contact Us

Questions, feedback, bug reports, partnership ideas — we read every message. Email is the fastest way to reach the Sudoku100 team, and a real human will get back to you.

Email us

[email protected]

What to write about

Every message lands in the same inbox. To help us route it faster, here is what we usually handle:

Feedback & Suggestions

Ideas for new sudoku variants, features, difficulty tuning, or anything that would make your daily puzzle better.

Bug Reports

Something looks broken or a puzzle behaves strangely? Tell us the page, the browser, and what happened.

Business & Partnerships

Advertising, content collaboration, API integration, or media inquiries — include a few lines about your proposal.

Account & Privacy

Login issues, membership questions, or privacy and data requests. We handle personal data requests seriously and promptly.

Before you write

Some questions have instant answers:

How to Play Sudoku Complete rules and a step-by-step beginner walkthrough. Sudoku Tips & Strategies From hidden singles to X-Wing — level up your solving skills. Sudoku Solver Stuck on a puzzle? Get the answer with step-by-step explanations. FAQ Common questions about puzzles, accounts, and membership.

Response time

We usually reply within 1-2 business days. If you haven't heard back within a week, please check your spam folder or send a follow-up — occasionally our replies get lost along the way.

Sudoku100 — thank you for helping us build a better sudoku home.