A Pajarita Puzzle Cube in papiroflexia.

I present the development of a modular origami design based upon the Pajarita, a figure from the traditional Spanish paper-folding art. The work is a modular cube decorated with Pajaritas with the colour pattern produced by folding of individual units to be topologically identical but with distinct colour patterns on each. The mathematics of the cube-colouring and unit-colouring problems are analysed. Two unique solutions are found and presented for the easiest possible cube and a solution for the hardest possible cube. [ABSTRACT FROM AUTHOR]