You may also like

Three Cubes

Can you work out the dimensions of the three cubes?

Nine Colours

Can you use small coloured cubes to make a 3 by 3 by 3 cube so that each face of the bigger cube contains one of each colour?

Marbles in a Box

How many winning lines can you make in a three-dimensional version of noughts and crosses?

The Spider and the Fly

Age 14 to 16
Challenge Level

Sometimes problems like this are better "unwrapped". How about considering the net of the room?