Brain Block Tetromino Difficulty: ⭐/5 Level 1 • How to Play Take out the pieces and fit all the pieces back into the case perfectly. First, aim to complete it within 10 minutes. There are 783 different ways to fit the pieces, so the correct answer changes every time you play. I am selling this because I am enjoying the ones of different difficulty levels that I purchased at the same time. It is new and unopened, but it has been stored at home, so please check the condition in the photos and consider purchasing it if you are satisfied. How about it for your leisure time during the New Year holidays? Thank you for viewing.