While puzzles such as the Rubik's Cube can be modeled using group theory (see Rubik's Cube group), certain puzzles are better modeled as groupoids.An Introduction to Groups, Groupoids and Their Representations: An Introduction; Alberto Ibort, Miguel A. Rodriguez; CRC Press, 2019.
While puzzles such as the Rubik's Cube can be modeled using group theory (see Rubik's Cube group) certain puzzles are better modeled as groupoidsAn Introduction to Groups Groupoids and Their Representations An Introduction; Alberto Ibort Miguel A Rodriguez; CRC Press 2019