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
Cambridge School of Architecture and Landscape Architecture at the Lowthorpe School of Landscape Architecture, wanted to begin by taking architectural drafting at Harvard but was refused entry because the school did not admit women. Brooks consulted with the school's head, James Sturgis Pray, who then arranged for architectural design professor Henry Atherton Frost to tutor Brooks privately. Somewhat to his surprise, Frost found his unexpected pupil an adept and enthusiastic student, and in an account of the school's founding he wrote: "Teaching a woman what we had always considered strictly a man's job was not the painful ordeal it had promised to be." Within a year, Frost