Tenyo TBB-02 Pentomino Brain Block BRAIN BLOCK Tenyo Brain Puzzle Pentomino Difficulty Level 2 (Beginner to Intermediate) Correct Solutions: 2339 patterns Ages 6 and up Access more puzzles on your smartphone or PC 〈How to Enjoy Pentomino〉 Take out the pieces and put all the pieces back into the case perfectly. First, aim to complete it within 20 minutes. There are 2,339 different ways to fit the pieces, so the solution changes every time you play. Shipped in simple packaging (anonymous shipping). A puzzle where you just fit the pieces into the case. There are 2,339 ways to fit them, making it a deep puzzle. Tenyo Pentomino Brain Block -- This is a puzzle game called "Brain Block" - a puzzle you can play forever, Level 2. [Product Condition] New, Unused [Material] Plastic