This has been driving me mad this morning.

The aim is to get everyone across the river, but there are four rules:

• the Dad cannot be left alone with any of the girls
• the Mum cannot be left alone with any of the boys
• the thief cannot be left alone with any family members
• the Mum, Dad and Policeman are the only people that can work the boat

Just click the big blue button in the bottom right hand corner of the screen to get started. The annoying thing is that once you’ve done it, if you try it again, you won’t be able to remember how you did it. Grrrr!