+Fix rescaling by adopting a different strategy: use mouse scroll instead, +/- 5% each time ?
+Seems easier to control width/height accurately and safely in this way...
+
+Impossible to play / triple move in Doublemove : turn issues, maybe because a move is sent twice to the server...
+=> solution = sign (hash?) moves, and if an already received signature received again, ignore?
+
add variants : Chakart first (dark,cylinder)
Dark Racing Kings ?
Checkered-Teleport ?