description Square-1 Overview
Square-1, also known as Cube 21, is a shape-shifting twisty puzzle invented in Czechoslovakia by Karel Hršel and Vojtěch Kopský and released commercially in 1990. Unlike standard 3×3×3 cubes, its mechanism allows the three layers to be cut at varying angles, causing the puzzle to deform into non-cubic polyhedral shapes when scrambled. Solving requires returning the pieces to a cube shape and then restoring the color order through sequences of slice and twist moves. The Square-1 is an official event in World Cube Association competitions.
help Square-1 FAQ
What country was the Square-1 puzzle originally invented in?
The Square-1 puzzle was originally invented in Czechoslovakia. It was created by Karel Hršel and Vojtěch Kopský during the late 1980s. It was later released commercially in 1990.
What makes the mechanism of the Square-1 puzzle different from a standard 3x3 Rubik's Cube?
Unlike standard 3×3×3 cubes, the Square-1 mechanism allows the three layers to be cut at varying angles. This causes the puzzle to physically change its overall shape as it is turned. It is classified as a shape-shifting twisty puzzle.
What year was the Square-1 puzzle released commercially?
The puzzle was released commercially in the year 1990. It gained international popularity following the initial Rubik's Cube craze. Today, it is a staple event in official speedcubing competitions.
Who are the original inventors credited with creating the Square-1 puzzle?
The puzzle was invented by Karel Hršel and Vojtěch Kopský. These two Czechoslovakian inventors designed the unique shape-shifting mechanism. The puzzle is also sometimes referred to by its alternative name, Cube 21.
explore Explore More
Similar to Square-1
See all arrow_forward
Reviews & Comments
Write a Review
Be the first to review
Share your thoughts with the community and help others make better decisions.
