The Square-0, invented by Daniel Goodman in 2015 by bandaging a Square-1, is a cube-shaped twisty puzzle with 12 edge pieces across 3 layers. With ~80,000 combinations, it’s a beginner-friendly puzzle, solving like a 2x2x3 cuboid. Rotate faces to align edges intuitively, starting with top and bottom layers. A niche favorite, it lacks WCA status and official records. ShengShou’s “Mr. M Square-0” offers smooth, magnetized turning. On rubikverse.com, the virtual simulator provides an engaging way to scramble and solve this simple yet fun puzzle anytime.