Pritchard's book is chock full of information, with most variants listed in super-abbreviated form. Randomly selected example:
I have no idea what that means but it sounds cool. Anyway, aside from general interest I borrowed this book primarily as research for a little article for the Chess Variants Pages. I wanted to see the variant known as Valentine's Chess, in particular I am interested in pieces named Templar. Valentine's is the oldest game I have seen which included a piece so named. Big let-down: Valentine's Templar is a well-known combo piece: Bishop plus Knight. Not much to write home about. The game as a whole has some promise, with several other variant pieces and some unusual promotion rules. I may have to do a write-up for it.
MIRROR C[hess] Problem theme in which pieces move like non-stop equihoppers. Not playable.
Pritchard also offers reports on two alternative interpretations of Enochian Chess. I should either update my article on it or write a follow-up piece. Meanwhile my latest original variants languish unfinished. I suppose that's not the end of the world. It's not like I'm going to set the chess variant world on fire with any of my efforts.