On a plate, you find a drawing to be reproduced while placing the symbols exactly on those drawn. On each edge of the plate, you find ?boxes? of elements (square, triangles, rounds, cross). If you click on the blue button of a box, the element advances in its line. It is thus a question of carrying out combinations to arrive at the wanted drawing, while being useful for example of the symbols on the other edges to advance your elements. (Google Translation)