This is a puzzle where you combine blocks of various shapes to fill a designated space. The difficulty can be adjusted by changing the size of the grid, and there are 36,057 possible solutions. Suitable for a wide age range, from 3 to 99 years old. It is also valued as an educational tool for developing creativity and mental strength. Puzzle outer dimensions: 30 x 14 cm Outer box outer dimensions: 31 x 19 cm *The puzzle, puzzle board, and instruction manual are in good condition, but the box surface has some sun damage and light stains. Please consider purchasing if you understand that this is a used item. *Please leave the packaging and shipping method to us. *We are not considering any price reductions at this time. #BrainTraining