Solve Mortimer's riddle which saves his Millennium Enterprise with only one attempt. To do this, use the log in the chimney. A clock will begin ticking. Open the first drawer on the left side on the desk. Press the red button. Some books on the shelf will move. Select the red book, then select the other two books. Open the second drawer and press the green button. The books will move again. Select any book, select the green book second, then select any book again. Open the third drawer and press the blue button. The books will move again. Press any book first and second, then select the green book third . A panel at the bottom of the shelf will open, revealing a key.