Couldn't find an explicit chess song on my mother's Donovan albums, but it was nice listening. "Guinevere" in white is the closest, and might make a nice counterpoint to "Children of Darkness." My mother's fantasy novel The Warlock of Night (available now only from used book dealers at websites such as www.bookfinder.com) is unique in featuring the black forces as the protagonists.

Cheerily,
Charley Noble