Ravensburger 759 Escape puzzle

Escape room puzzle from the Ravensburger brand.

Made only once, it is in very good condition, it has instructions in several languages and an explanatory guide. I threw away the square pieces that came with it and were not needed to solve the puzzle.

There is an envelope that contains the final solution to the puzzle, on that sheet there is a very very small cut (it does not affect the resolution of the puzzle).