The image above is the second and final part of Physics World’s festive puzzle 2014. If this is the first you’ve heard about the puzzle, start by checking out Physics World’s festive puzzle: part 1, which was published a week ago.
Can you solve it? Let us know how you get on by posting a comment below, but please do keep the answer to yourself, if you work it out, to avoid giving the game away for others.
We hope you enjoy this bit of fun. There are no prizes – the only reward is the satisfaction of finishing the puzzle. Solutions will be published on this blog in January.