Privacy Policy
Last updated:
This policy explains what information Online Chess processes when you use it, why, and the choices you have. We have built the site to work without accounts and to collect as little as possible.
Information we do not collect
We do not ask for your name, email address, password or any other account details. You can use every feature of the site anonymously.
Information stored in your browser
Your browser’s local storage keeps a few settings, such as your preferred difficulty and time control. While a tab is open, its session storage also holds a random session identifier. The identifier is not linked to your identity; it only lets you reconnect to an online game you are already playing after a refresh or a dropped connection, and it is deleted when you close the tab. You can delete this data at any time by clearing your browser’s site data.
Online games
When you play an online game, the moves, clock times, game result and the random session identifiers of both players are processed on our servers so that moves can be validated and sent to your opponent. This data is not used to identify you, and game rooms are deleted automatically after a period of inactivity.
Games against the computer are played entirely in your browser and are never sent to our servers.
Advertising and cookies
This site shows ads served by Google AdSense. Google and its partners use cookies and similar technologies to show ads based on your visits to this and other websites, and to measure their performance. You can learn more at https://policies.google.com/technologies/partner-sites, turn off personalised advertising at https://adssettings.google.com, or opt out of third-party advertising cookies at https://www.aboutads.info/choices.
Where required by law, such as in the European Economic Area and the United Kingdom, you will be asked for consent before personalised ads are shown.
Hosting and logs
The site is hosted on Cloudflare, which processes technical request data such as IP addresses and browser information to deliver pages, keep the service secure and protect it against abuse.
Children
The site is suitable for players of all ages and does not knowingly collect personal information from children.
Changes and contact
We may update this policy from time to time, and the date at the top of this page shows when it last changed. If you have any questions about privacy, please write to cesilphp@hotmail.com.