George Duke wrote on Wed, Jul 15, 2015 12:19 AM UTC:
What was happening 15 years ago to the day?
http://www.chessvariants.org/other.dir/promdem.html, Neto's Promotions and
Demotions. Also the next couple weeks 2000, Duniho's Wormhole, http://www.chessvariants.org/32turn.dir/wormhole.html, and Citadel originating in 1930s, http://www.chessvariants.org/shape.dir/citadel2.html.