Ravensburger Krypt Inside The Riemann Sphere 654 Piece Jigsaw Puzzle Challenge for Adults – Every Piece is Unique, Softclick Technology Means Pieces Fit Together Perfectly
Not quite as challenging as its Krypt Silver counterpart, the Krypt Colorful Spiral has 654 pieces of colorful balls spiraling off into the distance. Each colorful ball features a reflection of the puzzle in its surface, making it just a little bit more challenging than normal.
Around since 1891, Ravensburger is known for their attention to detail. Each puzzle is made using their exclusively developed, extra-thick cardboard, and combined with a linen-structured paper on which the desired image is printed. This helps to create a glare-free puzzle image when it is finally complete. Each of their steel cutting tools are designed and crafted by hand, and are replaced after every 60,000 puzzles. This almost guarantees a perfect interlocking fit, and helps to ensure that no two pieces are alike.