Bake a sheet about three-fourths of an inch thick of sponge or gold cake mixture (see Parts IV. and V.). Let it stand one day, if possible, then cut in slices two inches wide. Turn the bottom up and spread thin with jelly. Now roll a piece of marzipan, very thin, cut in same size strips, to cover the top of slices, and frost over very thin with water icing. Now, with a sharp knife cut in blocks again the size of domino blocks. Let them stay close together; draw a line through the center with red icing, then with finer tube draw two lines with white royal icing on the sides, and ornament with dots of chocolate to represent the numbers on the dominoes.