Before you watch the video below have a close look at the picture above and guess how this was done. There are 3 slots cut into a piece of wood, there is a real solid nail placed in the wood. Each section of wood including the outer sections are solid (just as it looks). You would not be able to remove the nail by sliding it. This was a real puzzler for me and I wouldn’t have guessed how it was done without watching the video…
Leave a guess in the comments if you think you have figured it out. You will probably need to try to not look at any other comments that may exist. I am curious how many people get it?