Base: Add manual page for Chess game

Base/usr/share/man/man6/Chess.md

@@ -0,0 +1,15 @@
+## Name
+
+Chess
+
+## Synopsis
+
+```**sh
+$ Chess
+```
+
+## Description
+
+Chess is an implementation of the 15th century board game. 
+
+The game can either be played against another human or against the ChessEngine service.