Each tetracube consists of four cubes connected face to face. There are eight distinct tetracubes: five are flat and can be laid out in a plane; the other three have genuinely three-dimensional shapes. Tetracubes belong to the family of polycubes.

All eight tetracubes together contain 8 × 4 = 32 unit cubes. They can be arranged into a cuboid measuring 2 × 4 × 4, among many other shapes.

The complete set of eight tetracubes can also be arranged to form a scaled-up version of each piece, with twice the edge length.

The 3D-printing template includes eight tetracubes and a box.

The Online Tetracube Solver runs directly in your browser, with no installation or download required. Shapes can be assembled with a few mouse clicks and then solved.

The solver does not combine solutions that differ only by rotation; each is listed separately. The interface is in English and easy to use.