_If the reader would try this new task, he may cut out the shields at the back of the book. For spindles he may use three square pieces of cardboard with a pin stuck through the centre of each. After placing the shields on the first spindle the first move will be shield No. 1 to a vacant spindle. Then shield No. 2 to another vacant spindle. Then shield No. 1 on top of shield No. 2, and the rest as he may._