From edge to edge, this puzzle is solid silver which highlights the outline of the pieces themselves and the designs that these expertly cut pieces form when assembled. Difficult? Oh, it's much harder than that, which is what makes assembling it that much more impressive!Ravensburger has been in the puzzle business for over 125 years, and have consistently shown themselves to be leaders in quality jigsaws; from their "Soft-Click Technology" (when the correct pieces are interlocked, a soft click can be heard as they snap into place), to the uniqueness of every puzzle and piece (piece shape is hand-drawn and then precisely cut with hand-crafted, specially designed tools), to the sturdy and recycled board that their pieces are cut from. Ravensburger delivers image variety, top quality, and innovation with every product. Ravensburger Krypt Blank Puzzle Challenge - Theme/Subject: Learning - 654 Pieces
