PUZZLE WITH PLAYING PIECES MOVABLE ONE RELATIVE TO ANOTHER Russian patent published in 1998 - IPC

FIELD: entertaining and teaching equipment. SUBSTANCE: puzzle has frame with top and bottom bases and guides for moving playing pieces provided with indices. Guides are made in the form of parallel bars, for instance three bars, removably attached to bases. Playing pieces are formed as cubes with through holes extending perpendicular to two opposite faces, with indices applied to all faces of playing pieces being made in the form of letters. Each bar carries at least three playing pieces positioned for rotation relative bar axis and movement along it. Puzzle may be further provided with at least one unit for synchronous rotation of playing pieces on bars. This unit may be formed as transparent flexible casing with U-shaped section. EFFECT: increased entertaining and learning effect and simplified construction. 2 dwg