An easy-to-carry stage version is ideal for small stages and parlor magic. The magician invites his audience to develop a story in which the details are written on the bottom of a blackboard in colored chalk. Immediately afterwards, the magician shows the upper part of the board that was covered and reveals that his prediction, written in white chalk, perfectly matches the words freely chosen by the spectators. This is an entirely unique principle that eliminates the drawbacks of all objects of this nature.