This month you need to spot ten differences between the two photographs.

Once you have found a difference, simply click on it with your mouse on the bottom photo (the top photo is the original) to interactively label it with a circle.

Every difference you spot will be added to the counter in the middle, and when you think you have found all TEN differences between the two photographs, then click the button marked 'Think you have found them all?' to see if you are right!

Good luck, and look carefully. They are not as obvious as you might think!