Deletion of Thief (chess)

Comment: There are lots of references to this program when googleing the client. The sources however don't seem to satisfy , or provide only trivial coverage. Still the multitude of mentions of the software leads me to believe there is a fair chance that there sources, I just haven't found them. I'll search some more, but for now, I'm on the fence
Stance: comment
Cited policy: Wikipedia:Reliable sources (WP:RS)