THREE-DIMENSIONAL LOGIC PUZZLE "GRAND MASTER-II" Russian patent published in 1994 - IPC

FIELD: games. SUBSTANCE: puzzle comprises central, intermediate, rib and corner playing pieces, engaging one another with the aid of slots and projections, forming three groups of relatively perpendicular playing layers and installed on spherical support with a provision for layerwise rotation about relatively perpendicular axles of support. The latter consists of eight spherical segments formed by sectionalizing the support by three relatively perpendicular planes passing through support center and axles and installed with a provision for their semicircles to rotate relative to support axles. Support segments have arcuate slots forming three circular grooves arranged in support sectioned planes disposed in which are arcuate guides comprised of supporting and movable parts. Flexible members are arranged in guide grooves, while spacer members, between guides at points of intersection of said planes. Central playing pieces interact with fastening heads of support disposed along its axles. One of segments is rigidly connected with three guides. Outer surfaces of playing pieces have playing marks. Game presupposes layerwise rotation of playing pieces until they come to a position corresponding to playing marks. EFFECT: higher entertaining capacity. 5 cl, 22 dwg