Opera introduced Custom chess browser puts chess right at your fingertips / Opera special versions of its browser for desktop platforms and Android in collaboration with Chess.com .
In the desktop "chess" version, Opera offers an icon Chess.com on the side panel. This allows you to play not in a separate tab, but in a window on top of open pages. You can also pin a window with chess — then you will get something like a split screen.
The chess version of the browser for Opera adds chess-related content to the home page, including articles and videos. It also offers special wallpapers — just like the desktop version.