NEW VARIANTS:
https://www.chessvariants.com/incinf.dir/bario.html
-https://www.chessvariants.com/mvopponent.dir/avalanche.html
https://www.pychess.org/variant/manchu
https://www.pychess.org/variant/dobutsu
https://musketeerchess.net/games/musketeer/index.php Attention règle de promotion + SVG / PNG
https://www.chessvariants.com/rules/spartan-chess
https://www.chessvariants.com/mvopponent.dir/hypnotic-chess.html
https://www.chessvariants.com/mvopponent.dir/mesmer-chess.html
+
https://brainking.com/en/GameRules?tp=47&fwa=ArchivedGame!g=8204276$i=1
related to: Crown Chess: place all units on move 1 (similar to Sittuyin, more freely --> in own half-board, possible pawns on 1st rank)
+
http://history.chess.free.fr/rollerball.htm
Squatter Chess: safe on last rank = win
Companion Chess : pieces of same nature don't attack each others