-Full detection of repeated positions (including turn)
-In UltimaChess, consider these rules modifications: http://www.inference.org.uk/mackay/ultima/ultima.html
-Reintroduce isAttackedBy in Ultima, and fix it for pawns --> underCheck + stalemate
---> take into account that an immobilized piece does not give check.
-(chameleons cannot be immobilized)
+Finish rules translation in Spanish
+Design: final touch (gain extra space on top, using space on the right)
+Crazyhouse: center reserves, grey if zero available, numbers superimposed