I designed B-loc as a 'Puzzle Without a Solution.' I primarily sold the sets at shows and through my studio but the Boston Museum of Fine Arts carried these for a while as did the MIT Museum Store. This image is the lower budget set sold in the MIT Museum Store and their catalog. It was not treated with oil and was not contained in the fancy box I designed for the original set. Instead it was held together with a large rubber O-ring running around the perimeter in channels cut in each block.