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
A+D Museum A+D Museum A+D Museum, also known as Architecture and Design Museum, Los Angeles, is a museum for architecture and design in Los Angeles, California. It is located in Downtown Los Angeles Arts District at 900 E 4th Street. Currently, it is lead by its Executive Director and Chief Curator, Anthony Morey, a los Angeles-based writer, theorist, designer and curator. A true design think tank, the A+D museum aspires to maintain its diverse and innovative activities to continue to bring contemporary, progressive and emerging design and architecture to international audiences. A+D Museum was founded by Stephen Kanner and Bernard Zimmerman in