Thank you for viewing. This item is new and unopened. I purchased it as a gift for my child, but they already had a similar item, so I am selling this one. Although it is new and unopened, please consider that it has been in someone's possession once before making a purchase. [Product Description] Tenyo TBB-04 Pentomino Square (Brain Block) A puzzle you can play forever Difficulty Level 4, for intermediate to advanced players, with a total of 16,146 possible solutions. Brain exercise. Take out the pieces and put them back in the case. That's all there is to it, but it's incredibly difficult. Shipping is planned via Yu-Packet Post Mini. Puzzle Puzzle game A puzzle you can play forever Brain block Brain block Pentomino Square