Thank you for viewing! This is the Tenyo Tetromino Brain Block TBB-01 (Difficulty 1 / LEVEL 1). "Take out the pieces and put them back in the case" - that's all there is to it. However, there are a total of 783 possible combinations, making it a puzzle that requires you to fully engage your brain despite its simplicity. About Bundle Discounts We may have multiple items in stock. If you would like to purchase multiple items, please let us know the number of pieces you need in the comments before purchasing. If we have them in stock, we will discount each additional item by 50 yen. We also offer discounts for bundling with other products. 【Discount Examples】 1 item → Regular price 2 items → 50 yen off the total amount 3 items → 100 yen off the total amount Example: If you want 3 items of a product that costs 800 yen each 800 yen x 3 items = 2,400 yen → Discounted to 2,300 yen This is a LEVEL 1 model for beginners, so it's recommended for those trying it for the first time, for children's educational purposes, and for brain training for seniors. It has a compact design that allows you to carry it around, so you can enjoy it on the go. This is a three-dimensional puzzle that you can play forever, perfect for brain exercises, improving concentration, killing time, and as a gift ✨ ・Tenyo Tetromino Brain Block TBB-01 ・Difficulty 1 LEVEL 1 for beginners ・Playable with a total of 783 combinations ・Difficult even though you just put the pieces back in the case ・Optimal for brain training, brain exercises, and brain stretching ・Compact size for easy portability ・Recommended for educational toys and gifts #Tenyo #Tenyo #Tetromino #BrainBlock #3DPuzzle #BrainTraining #BrainExercise #EducationalToy #BrainStretch #LEVEL1 #ForBeginners #TBB01 #783Combinations