The Square 1 is a puzzle shaped as a cube. This puzzle was created by Karel Hrsel and Vojtech Kopsky in 1990. The original name for this was "Back to Square 1" but was later shortened to "Square 1".
Design[]
The Square 1 has three layers: the upper and lower layers- which consists of triangle edges and kite corner pieces- and the middle layer which has two trapezoid pieces. It can shapeshift.
Shape Mods[]
The Square 1's shape mods are the Square 2, the Super Square 1, and the Two Layered Square 1.