I’ve played a couple. Commander-In-Chief has quality pieces and offers a fun alternative to Chess. Otherwise, Solitaire Chess offers interesting challenges with a handful of Chess pieces.
I’ve thought about using it in AAE, but then I relized that I could only use the small infintrie type units as most others (Tanks mostly) were too large to fit in 1 teritoirie.
That’d be in interesting thing to do though, you’d have to have quit a few AAM though.
ANYWAY, I bet this guy doesn’t even have an honest copy of the A&A boardgame. He probably downloaded the rules someplace and made a board out of linoleum and plastic pieces out of used gum and pipe-cleaners.