Nintendo tumbler puzzle Nintendo tumbler puzzle The Nintendo tumbler puzzle, also known as the "Ten Billion Barrel" in English and originally in Japanese, is a mathematical puzzle in the style of Rubik's Cube. It was invented by Gunpei Yokoi of Nintendo in 1980 and was covered by (until the patent expired in March 1995 due to non-payment of a maintenance fee). It consists of a "cylinder" of transparent plastic divided into six levels, together with a black plastic "frame". The frame consists of upper and lower discs that are joined together through the middle of the cylinder. The top and bottom levels of
Rachel Stevens (sculptor) at the Lviv Center for Urban History of East Central Europe. Stevens's work has interpreted the Holocaust in Ukraine in a series of sculptures called "The Broken Fragments of My Heart". They reimagine the deep ravines of Ukraine where more than a million Jews were shot during World War II by the German SS and police death squads in what became known as "Holocaust by bullet". Rachel Stevens (sculptor) Rachel Stevens is a sculptor, professor of art at New Mexico State University and a Fulbright Scholar. Stevens has exhibited both in the United States and internationally. Stevens's public sculpture, "You