Two-dimensional packing puzzle consisting of 13 pieces that need to be placed within a frame.
“Kwazy Quilt” was registered by Kohner Bros., Inc. at 1966-04-26 (registration number: 0807494), first used at 1964-08-10, expired at 1989-01-10.
Later puzzle has also been produced by Tenyo Co., Ltd. in Japan with the name “No. 0 Beat the Computer”, and also the same puzzle was made in Soviet Union, in Donetsk, Ukraine (approximately year 1989).
Japan and Soviet instruction leaflets claimed that puzzle has 1641 solutions, however this number might be incorrect.
Free open-source cross-platform software.