Symbols are relating to the Royal Navy, including Bombs, Boats, Skulls, Navy Flags, Flippers, Diving Helmets, Parachutes, Frogs and anchors. Symbols are engraved into 4 mm birch ply. This is a difficult puzzle as there are 8 symbols on each piece. Typical edge matching puzzles will have only 4 or 6 symbols on a piece. A solution is not provided however, you can message me for a hint or the solution. Puzzle measures 209 mm x 209 mm x 8 mm thick they also come with a 6 mm peg to help lift and twist each piece. Currently I have a Royal Navy theme, an Electrician theme, a Barber Shop theme and a Computer Guy Repairer theme. Still working on the Builder theme and A Mechanic Theme. Depending on where you look this puzzle is difficulty level 3 or 4 .