FUNK by Bacon Magic

FUNK is an interesting puzzle product produced by Bacon magic. There are four exquisite irregular transparent puzzles in the box. Please try to piece them into a rectangle

This seems to be a simple jigsaw puzzle, but it's actually very difficult. If you find it difficult, you can refer to the correct illustration attached to the packing box. As for why the name of this puzzle is called "FUNK", I think you can easily guess it!

Give it to your friends and see if they can challenge successfully!