"

Be careful reading in your own definitions what ""variant"" means. All the regional and national chesses have entries in Pritchard's The Encyclopedia of Chess Variants and The Classified Encyclopedia of Chess Variants, and each of them also has an entry for ""orthochess"" (FIDE chess). Gollon's Chess Variations has chapters for the major regional and national chesses. Also see noted French chess historian Jean-Louis Cazaux's site .   "