-PGN text is not selectable (understand why?!)
-Checkered stage 2: switch button at reserve position (or on top).
-Mode expert: game.js, button on top (with online indicator)
-Turn indicator on top too (black or white)
+For animation, moves should contains "moving" and "fading" maybe...
+(But it's really just for Magnetic chess)
+setInterval "CRON" task in sockets.js to check connected clients
+(every 1hour maybe, or more)
+Systematically show init+dest squares in PGN, maybe after short notation
+(2 moves list, second for de-ambiguification)