Welcome to the Citadel

A mysterious structure with 28 separate rooms.

You are about to embark on a quest to reach the Tower of Nine. As you travel through the Citadel you will encounter many locked doors. Each door has a key number which you will discover by solving mathematical problems.

Many of the more difficult problems have extra help (if you keep trying!)

The book is the place to look to find out more about the tasks covered in the Quest of Nine.

Remember to keep a record of all the room key numbers so that you can use the map (at the bottom of each page) to go directly to the last room you visited.

Use the Record Sheet to keep track of your progress.

There is a link to a calculator at the bottom of each page.