The apartment floor was originally a vinyl tile—a turquoise-tinted matrix of clear plastic within which tiny squares of harder, dark blue plastic freely swam. The tile was permanently glued to the concrete slab in 1963, just weeks after that slab and the other slabs of the building had been quickly poured. The turquoise floor perfectly matched the enameled metal turquoise oven and cooktop that were installed at the same time. Kitchen cabinets were trimmed with “Regency” arched molding made of stained wood chips and glue. On the countertops, an “oatmeal” laminate sensibly anchored these style statements. The shag carpet offered equal numbers of orange and green strands. The windows were made of an uncoated aluminum. More than just an interior, the whole ensemble made for an engaging puzzle for both professionals and amateurs—one worthy of the theory of games.