-Generator variant, called "Matrix" ?
-Peces on first rank never move but generate new pieces. Pawn don't generate.
-A generator captured and replaced by a similar piece does not generate.
-King does not generate. No castling. En passant possible?
-Goal is still checkmate.
+https://www.pychess.org/variant/shogun
+https://www.chessvariants.com/incinf.dir/bario.html
+ https://www.chessvariants.com/index/listcomments.php?order=DESC&itemid=Bario
+ https://www.bario-chess-checkers-chessphotography-spaceart.de/
+ https://le-cdn.website-editor.net/20ef5f800ea646c29f6852cfc5ceda07/dms3rep/multi/opt/BAR028-e15a849c-960w.jpg