-1.f2f4 a7a5,h7h6 2.d2d3,c2c3 c7c6,d8c7 3.c1e3,e3e5 d7d6,d6e5 4.f4e5,e5e6 f7e6,f8f1 5.h1g3,g3f1 a8b6,e8g6 6.f1d2,d2e4 g6e4,e4d3 7.e1d3,d3c5 c5a4,a4b6
+S-chess https://en.wikipedia.org/wiki/Seirawan_chess
+
+Generator variant, called "Matrix" ?
+Peces on first rank never move but generate new pieces. Pawn don't generate.
+A generator captured and replaced by a similar piece does not generate.
+King does not generate. No castling. En passant possible?
+Goal is still checkmate.
+
+Take(a)n(d)make : if capture a piece, take its power for the last of the turn and make a move like it.
+If a pawn taken: direction of the capturer.
+
+"Ball" Chess: 9x9 board, ball on center square. 2 queens ?
+To take the ball when it's free you need to capture it.
+To take the ball when it's used, u need to take the piece.
+Goal: bring ball to final rank.
+Possibles passes : soit à une pièce, soit sur une case.
+ --> remplace un déplacement de pièce. Par exemple pion a2 passe à cavalier a4 = 1 coup.
+ --> selon le mode de déplacement standard (donc tout droit pour les pions)
+Pas de notion d'échec ou de mat (?)
+Si une pièce est mat elle donne le ballon (?)
+
+Maxima, Interweave, Roccoco
+
+Synchrone Chess: allow to anticipate en-passant capture as well :)
+
+Dynamo chess