-Beautify styles
-Translations ? (probably not)
-Fill some puzzles: http://www.logicmazes.com/games/puz1to4.html
+Finish rules translation in Spanish + improve existing ones
+Design: final touch (gain extra space on top, using space on the right)
+Crazyhouse: center reserves, grey if zero available, numbers superimposed
+Promotions: increase pieces sizes, better background.
+Code: use two spaces instead of tabs, everywhere.