2 Landing pieces from empty board:
3 https://www.chessvariants.com/diffsetup.dir/unachess.html
6 Generator variant, called "Matrix" ?
7 Peces on first rank never move but generate new pieces. Pawn don't generate.
8 A generator captured and replaced by a similar piece does not generate.
9 King does not generate. No castling. En passant possible?
10 Goal is still checkmate.
12 Take(a)n(d)make : if capture a piece, take its power for the last of the turn and make a move like it.
13 If a pawn taken: direction of the capturer.
17 Maxima, Interweave, Roccoco