TODO

   1 # New variants
   2 Landing pieces from empty board:
   3 https://www.chessvariants.com/diffsetup.dir/unachess.html
   4
   5 Generator variant, called "Matrix" ?
   6 Peces on first rank never move but generate new pieces. Pawn don't generate.
   7 A generator captured and replaced by a similar piece does not generate.
   8 King does not generate. No castling. En passant possible?
   9 Goal is still checkmate.
  10
  11 Take(a)n(d)make : if capture a piece, take its power for the last of the turn and make a move like it.
  12 If a pawn taken: direction of the capturer.
  13
  14 Maxima, Interweave, Roccoco
  15
  16 Synchrone Chess: allow to anticipate en-passant capture as well :)
  17
  18 Dynamo chess
  19
  20 Omega chess (ask first)