Day 4.310: Mother alert prototype!

While we were playing the Lego Hogwarts game the other day, someone took the  pieces that are not required (for the basic game at least) and made a rather impressive tower.

The game is rather good. As you can see below - it caused some serious expressions and intense stares as we worked out how to get our students around the shifting staircases of the castle to collect all our homework items.

The post title is a little puzzle for those who like that sort of thing.