Recently I installed the chess game software Knights for ubuntu. I'm trying to play online using a server (a feature according to the website: https://kde.org/applications/games/org.kde.knights) But I got the following issue:
How can I able that menu?
Edit 1. I run the command: hostnamectl and got this:
Static hostname: marin-Aspire-E5-521
Icon name: computer-laptop
Chassis: laptop
Machine ID: 403b41e1f87f499cb8b39aea045edc36
Boot ID: 84fabc4a665c48c4bd4f6ae1b525e488
Operating System: Ubuntu 18.04.3 LTS
Kernel: Linux 4.15.0-74-generic
Architecture: x86-64
The version of Knight is:
I installed it using the Ubuntu Software aplication. (I don't know how to use snap or deb packages)
Edit 2. Sorry for the snipped image. Here the complete window:
Edit 3.
Those are my options for computer engine, there is not a chess server.
I cannot enable the chess server option.
Edit 4.
I already have the XBoard and UCI protocols installed.
Edit 5.
You have installed the 'snap' version of Knights which installs Knights 2.6.0 on Ubuntu 18.04. I can certainly confirm on my own system that there is an issue with this version where it does not allow online play with freechess.org.
The repository version is a little older at 2.5.0 but it works out of the box with online play. To return to this older version first remove the snap version:
and then install the older repository version:
Now you can successfully play chess with other players on freechess.org! It might be material for another question as to why the newer version fails...