Can you help this week's hero defuse a bomb that the Evil Nemesis has rigged? If you think you can you stand to win an original drawing of Staz's artwork. All you have to do is to solve the challenge below and send your answer into us.

The Evil Nemesis has done it again and rigged a bomb to explode beneath the city. Fortunately, our hero Marshall Claw is at hand to save the day. But wait! This time the Evil Nemesis has really outdone herself. She’s rigged the bomb to be triggered when a huge block of ice melts and spills over the container it’s floating in. Our gallant hero tries to use his superpowers to lift the ice, but that fiendish felon has deliberately used a 2-tonne block, which is too heavy even for Marshall Claw’s superpowers. The clock is ticking, the ice is melting and the water level is dangerously close to the rim of the tank. What’s a superhero to do?

As his trusty sidekick, can you help? What should our hero do to avert a disaster?

Struggling? Want a clue?

This competition is now closed. The winner was Brian Ross-Meering




Our hero doesn’t need to do anything. The Evil Nemesis may be big but she’s not clever. A peculiarity of water is that it expands instead of shrinks when it solidifies, or freezes. And it just so happens that the amount of water that an ice cube will displace when floating is exactly the same as its liquid equivalent. In other words, when the block of ice melts, the water level in the tank will remain exactly the same. So the bomb won’t be triggered.