Albert's Cube

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From the Portuguese weekly puzzle magazine, the Albert's Cube is an assembly puzzle. From the Spanish designer Albert Violant, this puzzle adds another challenge to the already difficult packing cube.

Formed by 16 L shaped tetracubes and  8 sticks, the Albert's Cube uses every possible combination of drilled tetracubes with the exception of 1, which is undrilled. Every L shaped piece is drilled perpendicular to its 4 cube plane, which is going to limit the number of possible solutions, due to the fact that every stick has the same length and has to go through the cube.

The Albert's cube is closely related to the Stewart Coffin's Corner Block puzzle (see bottom of the listed puzzles in Coffin's page).

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