GNU Chess - Macintosh Repository

GNU Chess (Mac abandonware from 1995)

How to write chess using C language - Quora

The Apple/NeXT/GNU Chess app then and now (someone asked if it was still GNU Chess on my OS X Server post. also hidden video game reference in here winner gets a reddit

gnome-chess · GitHub Topics · GitHub

Stockfish - Wikidata

Free Open Source Macintosh Chess Software - Chess Forums

Ficheiro:GNU Chess no Ubuntu Linux.png – Wikipédia, a enciclopédia livre

Stockfish - Open Source Chess Engine

90 games from the 80's - Macintosh Repository

Best Free and Open Source Alternatives to Apple Chess - LinuxLinks

Zatikon going open source! : r/linux_gaming

How do chess engines evaluate positions? - Quora

Chess Program in C# - CodeProject

ChessX download

Chess for All Ages: June 2015