Lock Quest: The Planet Probe

The probe hatch is open!

Three, two, one, liftoff! The probe roars into the sky with your team's names painted on its side, headed for the edge of the solar system.

You are now a Lock Master. Go tell your teacher!

Your mission

A space probe is ready to launch, but its hatch is locked five ways. Eight planets circle our sun, and no two are alike. Some are small and rocky. Some are giant balls of gas. Mission control posted pictures on the wall, but nobody wrote down any names or codes. Your team will have to work them out from what you can see.

How to crack a lock

• Pick any lock from the menu at the top. You can solve them in any order.
• Read every clue before you start. One clue alone is never enough.
• Use scratch paper. Draw pictures, make lists, and cross things out.
• Tap the buttons to build your answer. Then press "Try the lock".
• A lock will not tell you which part is wrong, so be sure before you try.

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