TODO

   1 Implement Wildebeest castle rules
   2 => (1, 2, 3 or 4 squares slide; randomized: may be impossible >1, but possible >4...)
   3 getRepetitionStatus() lose or draw... (for some variants)
   4
   5 Embedded rules language not updated when language is set (in Analyse, Game and Problems)
   6 If new live game starts in background, "new game" notify OK but not first move (not too serious however)
   7 On smartphone for Teleport, Chakart, Weiqi and some others: option "confirm moves on touch screen"
   8 (=> comme pour corr) + option "confirm moves in corr games"?
   9
  10 NEW VARIANTS:
  11 Xiangqi
  12 Synochess
  13 EmpireChess
  14 Isardam (type B) : https://echekk.fr/spip.php?page=article&id_article=280
  15 https://www.reddit.com/r/TotemChess/comments/imi3v7/totem_rules/
  16 https://www.chessvariants.com/other.dir/fugue.html
  17 https://www.chessvariants.com/rules/spartan-chess
  18 https://www.chessvariants.com/mvopponent.dir/avalanche.html
  19 https://www.chessvariants.com/mvopponent.dir/hypnotic-chess.html
  20 https://www.chessvariants.com/mvopponent.dir/mesmer-chess.html
  21 https://brainking.com/en/GameRules?tp=47&fwa=ArchivedGame!g=8204276$i=1
  22 related to: Crown Chess: place all units on move 1 (similar to Sittuyin, more freely --> in own half-board, possible pawns on 1st rank)
  23 https://musketeerchess.net/games/cerebral/rules/rules.php
  24 --> MusketeerChess : from Titan, should be easy
  25 http://history.chess.free.fr/rollerball.htm
  26 Squatter Chess: safe on last rank = win
  27 Companion Chess : pieces of same nature don't attack each others
  28 https://www.chessvariants.com/difftaking.dir/brotherhood.html
  29 Crossing Chess = win when the king cross half-board
  30 Medusa Chess = Isardam
  31 --> à chaque déplacement, check attaques directes + découvertes autour de case de départ dans 8 directions (pas caval)
  32 Kingmaker: pawns can promote also into enemy king
  33 --> no king tracking, getCheckSquares + underCheck test all kings
  34 Eightkings: 8 pawns + 8 kings (non-royal until the last remains?)
  35 --> yes seems better, no king tracking + no underCheck/...etc when >= 2 kings
  36 https://www.jatektan.hu/_2018_vissza/2011_ig/uj2001/isakk1.html
  37 https://boardgamegeek.com/boardgame/18661/alapo
  38 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.
  39 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.
  40 https://www.chessvariants.com/incinf.dir/bario.html
  41 Paco-Sako : https://www.youtube.com/watch?v=tEv8TVqyZdQ + PDF rules
  42 https://discord.com/channels/686736099959504907/687076968046395410/735678637432635473 + Amazon Chess
  43 Maybe:
  44 https://www.chessvariants.com/diffmove.dir/asymmetric.html
  45 https://www.chessvariants.com/play/connected-chess
  46 Non-chess:
  47 fanorona https://fr.wikipedia.org/wiki/Fanorona
  48 Yoté https://fr.wikipedia.org/wiki/Yot%C3%A9 http://www.zillionsofgames.com/cgi-bin/zilligames/submissions.cgi/92187?do=show;id=960
  49 gess https://en.wikipedia.org/wiki/Gess
  50 gomoku, reversi
  51 avalam, qoridor (wider lines in another color, vr.lines [npt static get] for this one ?), draughts, draughts8
  52 (puis quand hexaboards peut-être: hexavariants + Hex)