A block or tile puzzle like you have never tried (or dared to try) before! The Brain Block Heptiamond Puzzle might look simple but it's far from easy to complete. That's because there are an incredible 10,000 ways to arrange and put the 24 heptiamond polyform tiles back in the case. This is the most difficult and time-consuming puzzle in a popular series by Tenyo. Are you up to the challenge?
The Brain Block Heptiamond Puzzle features: