This is our second production of Rik's Cube Kit which we are calling Series B. The set contains 20 individual pieces (17 pentacubes, 3 tetracubes) each crafted from a different species of exotic or domestic wood. The set is nicely contained in a handcrafted solid walnut and birch veneer clamshell case, with individual partitions for the pieces. Each piece has been hand stamped with a number that corresponds to the piece number in the documentation that accompanies this set. With this set there are 190 individual puzzles which can be solved using 3 pentacubes and the 3 tetracubes. As a bonus feature, the set also includes a dicube, which expands the possibilities to 2,101 additional puzzles which can be formed using five pentacubes and the dicube. Pieces from this set can also be used in the Caged Polycubes puzzle with the addition of the 4x4x4 Cage and Assembly jig, available separately. Included with this set are: 1) two booklets from the puzzle designer Rik van Grol which describe the original 190 puzzles and their solutions, 2) a digital download computer analysis of Five Pentacubes and a Dicube puzzles and solutions provided by John Rausch, 3) a Certificate of Authenticity, and 4) a document which identifies each piece by corresponding number, letter, and wood species.