TODO

   1 PROBABLY WON'T FIX:
   2 Embedded rules language not updated when language is set (in Analyse, Game and Problems)
   3 If new live game starts in background, "new game" notify OK but not first move.
   4
   5 NEW VARIANTS:
   6 https://www.chessvariants.com/incinf.dir/bario.html
   7 https://www.chessvariants.com/mvopponent.dir/avalanche.html
   8 https://www.pychess.org/variant/manchu
   9 https://www.pychess.org/variant/dobutsu
  10 https://musketeerchess.net/games/musketeer/index.php Attention règle de promotion + SVG / PNG
  11 https://musketeerchess.net/games/cerebral/rules/rules.php : from Titan, should be easy
  12 https://www.pychess.org/variant/shogun
  13 https://www.reddit.com/r/TotemChess/comments/imi3v7/totem_rules/
  14 https://www.chessvariants.com/other.dir/fugue.html
  15 https://www.chessvariants.com/rules/spartan-chess
  16 https://www.chessvariants.com/mvopponent.dir/hypnotic-chess.html
  17 https://www.chessvariants.com/mvopponent.dir/mesmer-chess.html
  18 https://brainking.com/en/GameRules?tp=47&fwa=ArchivedGame!g=8204276$i=1
  19 related to: Crown Chess: place all units on move 1 (similar to Sittuyin, more freely --> in own half-board, possible pawns on 1st rank)
  20 http://history.chess.free.fr/rollerball.htm
  21 Squatter Chess: safe on last rank = win
  22 Companion Chess : pieces of same nature don't attack each others
  23 https://www.chessvariants.com/difftaking.dir/brotherhood.html
  24 Crossing Chess = win when the king cross half-board
  25 Medusa Chess = Isardam
  26 --> à chaque déplacement, check attaques directes + découvertes autour de case de départ dans 8 directions (pas caval)
  27 Kingmaker: pawns can promote also into enemy king
  28 --> no king tracking, getCheckSquares + underCheck test all kings
  29 Eightkings: 8 pawns + 8 kings (non-royal until the last remains?)
  30 --> yes seems better, no king tracking + no underCheck/...etc when >= 2 kings
  31 https://www.jatektan.hu/_2018_vissza/2011_ig/uj2001/isakk1.html
  32 https://boardgamegeek.com/boardgame/18661/alapo
  33 Alapo is a strategy game. Each player owns twelve abstract pieces, two each of six different kinds. Round pieces move in any of the eight directions on the 6 by 6 board; square pieces move only orthogonally and triangular pieces only diagonally. Large pieces move any distance, small pieces only one field per turn.
  34 Opponent pieces can be eliminated by moving onto their position. The goal is to reach the opponent's base line with one of your pieces without the opponent being able to eliminate your piece in his/her next move.
  35 https://discord.com/channels/686736099959504907/687076968046395410/735678637432635473 + Amazon Chess
  36 Maybe:
  37 https://www.chessvariants.com/diffmove.dir/asymmetric.html
  38 https://www.chessvariants.com/play/connected-chess
  39 Non-chess:
  40 fanorona https://fr.wikipedia.org/wiki/Fanorona
  41 Yoté https://fr.wikipedia.org/wiki/Yot%C3%A9 http://www.zillionsofgames.com/cgi-bin/zilligames/submissions.cgi/92187?do=show;id=960
  42 gomoku, avalam, qoridor (wider lines in another color ?), draughts, draughts8
  43 (puis quand hexaboards peut-être: hexavariants + Hex)