A logical board game, played on a chessboard for two players, combining elements of art, science and sports.

Chess promo image
What is Chess?

Chess is a Firefox add-on by mr_JSm1th. This add-on has 93 daily active users and a poor user rating of 2.20. The latest version,, was updated 5 years ago.

Stats date:
Users: 93 ▲ 3
Rating: 2.20 (5)
Version: (Last updated: 2018-08-09)
Creation date: 2018-05-30
Weekly download count: 41
Firefox on Android: Yes
Manifest version: 2
  • storage
  • cookies
Size: 176.25K
Risk impact: Very low risk impact
Risk likelihood: Low risk likelihood
Found a bug?

Other platforms

Not available on Chrome
Not available on Edge
To play the game the player must pick up the chess pieces with "Space" and place it in the desired location, within the rules a standard chess game. There are different difficulty levels for beginner and advanced players. There is also a teaching mode that shows the player all the possible moves with the selected piece. You can choose different level of complexity and change the options by clicking "Select" ("Tab" - default)
Risk impact

Chess is safe to use. It does not request any sensitive permissions.

Risk impact measures the level of extra permissions an extension has access to. A low risk impact extension cannot do much harms, whereas a high risk impact extension can do a lot of damage like stealing your password, bypass your security settings, and access your personal data. High risk impact extensions are not necessarily malicious. However, if they do turn malicious, they can be very harmful.

Risk likelihood

Chess has earned a fairly good reputation and likely can be trusted.

Risk likelihood measures the probability that a Firefox add-on may turn malicious. This is determined by the publisher and the Firefox add-on reputation on Firefox Browser Add-ons, the amount of time the Firefox add-on has been around, and other signals about the Firefox add-on. Our algorithms are not perfect, and are subject to change as we discover new ways to detect malicious extensions. We recommend that you always exercise caution when installing a Firefox add-on, especially ones with higher risk impact and/or higher risk likelihood.

Subscribe to the premium plan to see more risk analysis details
User reviews
View all user reviews