Ravensburger Escape 4 Submarine Puzzle 759pcRavensburger Escape 4 Submarine Puzzle 759pc Escape Room in a Puzzle! In San Juan, you take a submarine adventure down to explore a sunken ship. As you dive below the surface, something goes wrong. The submarine powers down and you sink to the seabed. Can you power up the submarine and return to the surface? This is extra challenging, because the puzzle image isn't the same as the boxtop picture, and you have to decipher the clues on the in box