A black cover is designed in the instruction mpd file:
And a bigger playable chess set(hidden model in mpd):
Let's take a closer look:
Queen, King, Bishop
Knight, Rook, Pawn
Knight and Rook in the 10x10 version
Waiting for Inventory to load
These types of files are created with the LDraw system of software. You will need to install compatible software to open and view the instructions. A full list of available software is on the LDraw site.