This little mind boggler will keep you occupied for weeks. A four by four grid is drawn on the screen with a shape drawn in it. After hitting a key the shape disappears, only to reappear a short time later jumbled. You must restore the shape to its former dimensions by moving the rows and columns of the grid, achieved by pressing the keys from A to H.
Eight shapes of varying complexity ensure that many hours of lateral thinking will be required before you can say you have conquered the program.