Roy, Marth, and Link (because Link is pro at solving dungeon puzzles!) - The Legend of Zelda: Ocarina of Time; funny comic by Katie Tiedrich. Look up "AwkwardZombie" and that should bring up her stuff too- she's hilarious and fantastic.
The main problem of the Soma "research" is to assemble the seven Soma pieces or 27 cubelets to make a cube. The chance of solving this three-dimensional puzzle is good, because there are 240 possibilities to put the cube together, not counting symmetries.
Looks fun: A, Bee, C, Preschool: Building Shapes. Kindergarten readiness: Colored craft sticks are labeled with the number of sides each shape has, ie: 3 purple sticks - triangle. The children will choose a color and build the matching colored shape from