John Lawson wrote on Sat, Mar 31, 2018 03:55 AM UTC:
Greg,
I have The Classified Encyclopedia of Chess Variants, so I looked it up. There's not a lot of additional information. It says Janus Chess was invented in 1978 by Rudolf Lauterbach and Werner Schoendorf, and originally marketed as Super-Chess. The only references mentioned are, "Booklet Janus Schach, also photocopy of manufacturer's publicity material."
Greg,
I have The Classified Encyclopedia of Chess Variants, so I looked it up. There's not a lot of additional information. It says Janus Chess was invented in 1978 by Rudolf Lauterbach and Werner Schoendorf, and originally marketed as Super-Chess. The only references mentioned are, "Booklet Janus Schach, also photocopy of manufacturer's publicity material."