-https://www.chessvariants.com/other.dir/fugue.html
-https://www.chessvariants.com/rules/spartan-chess
-https://www.chessvariants.com/mvopponent.dir/avalanche.html
-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
-https://musketeerchess.net/games/cerebral/rules/rules.php
-EvolutionChess: jump from 1st line, Zied
-TitanChess: bishop+knight
-http://history.chess.free.fr/rollerball.htm