A puzzle includes a cube-shaped box having a cavity therein, a plurality of rhombus-shaped members detachably engaged to each other, and a plurality of pyramid-shaped members detachably engaged to the rhombus-shaped members. The rhombus-shaped members are intercalated between the pyramid-shaped members such that a combination of the rhombus-shaped members and the pyramid-shaped members collectively have a cube-shaped arrangement removably fitted inside the cavity of the cube-shaped box. At least two of the pyramid-shaped members are situated at a top-most region of the cavity of the cube-shaped box

Game piece in the form of a polyomino or polycube or similar, consisting of a number of blocks (5) that are put together in an orthogonal pattern, characterized in that the game piece (4) comprises at least two parts (6) that are each formed by a number of aforementioned blocks (5) connected together in a fixed way, whereby these parts (6) are slidably coupled with respect to one another in such a way that they enable a number of forms of game pieces (4) to be formed with the game piece (4) concerned.

Exemplary embodiments of a three-dimensional puzzle having C-shaped members are provided. For example, a three-dimensional puzzle can be provided including a first, second and third C-shaped member each having a first end and an opposing second end, and a first bulbous portion provided on the first end and a second bulbous portion provided on the second end of each C-shaped member, the first and second bulbous portions of the third C-shaped member are each configured to be in contact with and secured against the first and second bulbous portions of the first and second C-shaped members such that the first, second and third C-shaped members are held together independently.

The invention generally relates to multi-dimensional puzzles for teaching, entertainment, and construction. One embodiment of the invention comprises two forms, one planar and one non-planar, which comprise a plurality of protrusions and recesses. These forms may be assembled by selectively interconnecting the various protrusions and recesses to create multi-dimensional shapes such as a cube, cylinder, and sphere among many other possibilities.

A three dimensional structures, which may be formed as a three-dimensional jigsaw puzzle, are described. The structure has one or more viewing directions along which different images are viewable. An image to be presented is divided into image portions that are applied to primary surfaces, where the structure has the primary surfaces arranged to present the image when viewed along an axis. The structure may also have secondary surfaces that are hidden from view along a viewing direction, and which become viewable when the structure is rotated relative the viewer. The structure may also be in a puzzle, which may be in the form of a kit.

The present invention relates to a puzzle comprising single and/or multiple puzzle pieces constructed from puzzle blocks, wherein a single puzzle piece is constructed from a single puzzle block and a multiple puzzle piece is constructed from at least two puzzle blocks, wherein each puzzle block describes a bipyramidal structure, wherein each side surface of the pyramidal structures is suitable for optimally supporting the puzzle block on one or more surfaces in a puzzle board. Also, the invention relates to a puzzle board suitable for solving both two-dimensional and three-dimensional puzzles, wherein the puzzle board is provided with a top surface and a bottom surface, wherein both the top surface and the bottom surface comprise a puzzle field consisting of regular positions forming a two-dimensional field, wherein each position is provided with an indentation in the puzzle board corresponding to the shape of a puzzle block belonging to a puzzle in accordance with the invention. In a third aspect, the invention relates to a kit comprising said puzzle and said puzzle board.