Contact Us
We would love to hear from you. Whether it is feedback, a bug report, or a feature idea, every message is read by a real person.
The fastest way to reach us is email: [email protected]. You can also use the form below — it will open your own email app with the message ready to send.
What to expect
We aim to reply to every genuine message within a few business days. To help us respond quickly, please include as much detail as you can. If you are reporting a problem with a puzzle or a feature, let us know which device and browser you were using and what you were trying to do.
Common questions
Is vSudoku really free?
Yes. Every puzzle and every feature is free to use. The site is supported by advertising, which lets us keep it open to everyone without a subscription.
Do I need to create an account?
No account is needed. Just open the home page and start playing.
I found a puzzle I could not solve — is it broken?
Every puzzle we generate is verified to have exactly one solution, so it can always be finished with logic. If you are stuck, try the hint button, or read our strategy tips. If you are confident something is genuinely wrong, please email us the details and we will investigate.