"Behold, thou bright-witted one, another of the games with which the great Onalba was wont to amuse himself. Here in the frame at the steps of the throne you will see nine disks, three gray, three white, and three black. On the face of each you can see a square, a triangle, or a circle. You are to take these disks and place them on the numbered spots on the table beside you--number ten to be left vacant. The disks must then be moved along thick or thin lines into vacant spots, until all three colours, and a square, a triangle, and a circle can be found in each heavy lined circle and in each row of spots. Seven days you may have to accomplish this task for which your life may be the forfeit."