(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)
+Button to show all pieces that can move (next to expert mode; change icons)
+Some bots are very weak, others quite slow...