Your registration allows us to save your solutions. Only one
registration per E-Mail address is allowed. We do not use
passwords which you need to remember. Upon successful
registration you will receive an email with a unique link for
accessing the game, your personal link. For you convenience you
can save this link in your browser or as a shortcut on your
desktop or smartphone. When you access the game via your
personal link we save a cookie in your browser. This cookie is
used by the game to identify you.