Came across this nice puzzle today. There needs be no explanation to this puzzle; it’s quite straightforward and simple but some of the levels can be quite hard. Google is a great resource for trying to solve them. You’ll need to use both maths and language skills and the great thing about it is it’s not too difficult.

Recommended and addictive.

Currently on level 17.

• Python Challenge is a nice one I came across a while ago but it’s very hard.

Anyone know of any similar sites and puzzles worth attempting?