TODO

   1 # Functionality:
   2 On Game page "mconnect" events =>
   3   send lastate to them (because they have the game infos) or just "your turn" - if their turn
   4   remember them to send next "newmove" (or just "it's your turn") later - if not their turn
   5   (=> listen for "mdisconnect" as well)
   6 From MyGames page: send "mconnect" to all online players (me included: potential multi-tabs)
   7   When quit, send mdisconnect (relayed by server if no other MyGames tab).
   8 And remove current "notify through newmove" on server in sockets.js
   9
  10 # Misc:
  11 Saw once a "double challenge" bug, one anonymous and a second one logged
  12 Both were asked a challenge probably, and both challenges added as different ones.
  13
  14 # New variants
  15 8-pieces https://www.youtube.com/watch?v=XZ8K02Da7Ps&list=PLRyjH8DPuzTBiym6lA0r84P8N0HnTtZyN&index=6&t=0s
  16 https://www.chessvariants.com/rules/8-piece-chess
  17 Eightpieces : non-symmetric
  18 Sym8pieces : symmetric (960)
  19
  20 Generator vatiant, called "Matrix" ?
  21 Peces on first rank never move but generate new pieces. Pawn don't generate.
  22 A generator captured and replaced by a similar piece does not generate.
  23 King does not generate. No castling. En passant possible?
  24 Goal is still checkmate.
  25
  26 Take(a)n(d)make : if capture a piece, take its power for the last of the turn and make a move like it.
  27 If a pawn taken: direction of the capturer.
  28
  29 + Maxima, Interweave, Roccoco, Dynamo, Synchrone, Cannibal (force captures)
  30
  31 S-chess https://en.wikipedia.org/wiki/Seirawan_chess