The Fuzzball Problem - Outer Space / Pellicius. In an outer space adventure, intergalactic superheroes Peg and Cat are besieged by swiftly multiplying Fuzzballs. Primary Content: Doubling / halving Secondary Content: Spheres / cylinders. The Silliest Song Problem - Magical Forest. Peg and Cat must present the King with the silliest song in the land. They can't sing it without breaking down, so they break it down. Primary Content: Halves / fourths Secondary Content: Triangles.