"Dependency is not satisfiable" error when trying to install an application

When I try to install glchess in Synaptic

I get this error

At a certain time I installed the Gnome desktop and a lot of games that came with it and then uninstalled the games. Now I want chess back. When I downloaded the deb file and tried to install it in Gdebi I got a similar error:

What should I change in repositories?

2 Answers

From your pastebin it looks very much like you have not got the updates repository enabled

Tick this option shown - the refresh your installation before install pyChess

sudo apt-get update && sudo apt-get upgrade

sudo apt-get build-dep glchess