YJ Cube - Yulong SQ-1

The Square-1 (also known as Cube 21 and Back to Square One) differs from other twisty cube variants in the unique way it is cut. Although it is a three-layered, twisty puzzle the solution is totally different because the corners and edges are the same size. This means that corners can be swapped with edges, making it possible to have 10 pieces in the upper layer while only 6 in the bottom. This puzzle has a totally different mechanism and so requires completely new algorithms. Are you ready for a new challenge? Take your puzzle mastery to the next level!