Abstract: A variable three-dimensional labyrinth comprises a base, a plurality of central blocks, side blocks, corner blocks, wherein a plurality of buckling pillars are mounted on the base for buckling the central blocks. A plurality of hollow tunnels are formed on the central blocks, the side blocks, and the corner blocks. A holding part is mounted on each central block. A pivotally connecting part is integrated with each side block and each corner block. The pivotally connecting part is pivotally mounted between the base and the central blocks. A ball is moved into the hollow tunnels of the blocks from an entrance hole and moved along the hollow tunnels by rotating the blocks until reaching an exit hole, wherein the exit hole is formed on an exterior surface of one of the blocks, and the entrance hole is formed on an exterior surface of another block.

Abstract: An intelligence jigsaw puzzle comprises a base, a top cover, jigsaw blocks, a filling block, and an operation tool. When it is in use, the filling block is first taken away to permit the jigsaw blocks to be shifted across the buckling pillars. By forming a 1-2 mm gap between every two adjacent equiangular triangular jigsaw blocks, the hexagonal jigsaw puzzle, which is composed of equiangular triangular jigsaw blocks, eliminates the typical thought of being not able to rotate the equiangular triangular jigsaw blocks. Besides, three apices of each jigsaw block are changed to have an obtuse arc shape so there is provided the required space for rotating the jigsaw blocks one by one. Moreover, the unique thumbtack-shaped buckling pillars smooth the rotation of the jigsaw blocks and also protect them from falling. After all jigsaw blocks are settled, the filling block is inserted into the empty space.

Abstract: A variable three-dimensional labyrinth comprises a base, a plurality of central blocks, side blocks, corner blocks, wherein a plurality of buckling pillars are mounted on the base for buckling the central blocks. A plurality of hollow tunnels are formed on the central blocks, the side blocks, and the corner blocks. A holding part is mounted on each central block. A pivotally connecting part is integrated with each side block and each corner block. The pivotally connecting part is pivotally mounted between the base and the central blocks. A ball is moved into the hollow tunnels of the blocks from an entrance hole and moved along the hollow tunnels by rotating the blocks until reaching an exit hole, wherein the exit hole is formed on an exterior surface of one of the blocks, and the entrance hole is formed on an exterior surface of another block.

Abstract: A cubic puzzle includes a combination cube formed of a center base block and a set of puzzle blocks horizontally vertically aligned around the center base block, and cubic open holder frame holding the combination cube on the inside, the puzzle blocks being shifted in the cubic open holder frame to change the combination after removal of an assigned puzzle block from the cubic open holder frame.

Abstract: A cubic puzzle includes a combination cube formed of a center base block and a set of puzzle blocks horizontally vertically aligned around the center base block, and cubic open holder frame holding the combination cube on the inside, the puzzle blocks being shifted in the cubic open holder frame to change the combination after removal of an assigned puzzle block from the cubic open holder frame.

Abstract: A folding collapsible luggage cart includes a fixed bearing plate, two movable bearing plates hinged to the fixed bearing plate at two sides and equipped with a respective wheel, a sliding plate coupled to the fixed bearing plate by a dovetailed joint and adapted to lock/unlock the movable bearing plate, a retractable handle assembly pivoted to the fixed bearing plate, a sliding locking plate adapted to lock the retractable handle assembly in the operative position.

Abstract: A folding collapsible luggage cart includes a horizontal area-adjustable base frame, two foot members respectively fastened to the base frame and set between a vertical operative position and a horizontal non-operative position, two castors respectively pivoted to the base frame and set between an operative position and a non-operative position, a retractable handle pivoted to the base frame and set between a horizontal position closely attached to the base frame and a vertical position perpendicular to the base frame, and two back support arms bilaterally pivoted to a bracket at the retractable handle and alternatively set between a received position and an extended position. When collapsed, the luggage cart is held in a compact and flat manner conveniently for storage or carrying.