I have been trying to install XBoard4.9.1, but I have run into two problems. I have versiom 16 of Ubuntu.
1) I am trying to do it using the Ubuntu Sofware, but it only installs only version 4.8 of Xboard and I can't connect it to ICS or FICS.
2) I downloaded the file Xboard'4.9.1.tar.gz, but I couldn't install it. I have never installed a program from a file.
I want install this program and connnected it to FICS (freechess.com.). How can I do so?
You do not need to install XBoard from source code.
It is packaged in Ubuntu repositories.
So the easiest way is to get 4.9.1 from 18.04 LTS and install package manually: