Copyright © 2025 BBC. The BBC is not responsible for the content of external sites. Read about our approach to external linking.

We’re sorry, this feature is currently unavailable. We’re working to restore it. Please try again later.

Take a break, play with letters and numbers, and stretch your grey cells. Come back every day to play a new game.

People take pictures on an overpass with a display of stock information in front of buildings in the Lujiazui financial district in Shanghai, China August 6, 2024. REUTERS/Nicoco Chan/File photo ...