The Ravensburger Escape Puzzle "The Circle Anno 1683" combines classic puzzle fun with a mysterious riddle adventure. Assemble the 919 precision puzzle pieces to reveal a detailed historical motif full of discoveries. The image shows fascinating scientific instruments, historical buildings, and a windmill. Once the puzzle is put together, you must decipher the riddles hidden within the motif. Using the illustrated decoding disc, you will find the clues to solve the mystery. This challenging assembly game offers an exciting activity for all puzzle fans looking for an extra mental challenge.