When Juno learned from a puzzle book his older brother borrowed from the library that 3x3x3 + 4x4x4 + 5x5x5 = 6x6x6, he was excited, wondering if such a convenient thing could possibly be true. Back then, as a junior high school student, he made a wooden version of the puzzle featured in the book and played with it. However, he found the puzzle somewhat too simple and thought the effort to build it wasn't quite justified. The requirement to divide it into the minimum eight pieces necessary to form a 6x6x6 cube likely overly restricted the orientation and position of the pieces, thereby reducing the puzzle's difficulty.

In his latest design, all pieces are divided into rectangular blocks. Forming the three cubes of 3x3x3, 4x4x4, and 5x5x5 is relatively straightforward. However, constructing the 6x6x6 cube may prove challenging for some. While a lucky solver might arrive at the solution in about five minutes, it is anticipated that others may wrestle with the puzzle for around an hour.