There's a million dollar question our lips and it is this: dare you try to open the Million Dollar Puzzle? Hmm. For, as you will surely discover, many will try - yet only the bold, brave, beautiful and ever-so-clever will succeed.

For the Million Dollar Prize is simply the most mind-bendingly, neuron-destroyingly, deeply, unsettlingly difficult challenge we have yet encountered here in the lab at gadgetshop HQ. And we're not just saying that for the sake of it.

There's only one objective. Open the box. That's all. Now, you can neither resort to violence nor utilise tools during this operation. And the only dexterity you may apply is mental and digital. But we fear that, like millions before you, there will be a dreadful moment when your last resources of mental agility are spent - and you resort to prising it open with a kitchen knife. We dare you not to.

Place the Million Dollar Puzzle on a continuum of frustration and it's right up there with being stuck in a lift with a man who does Norman Wisdom impressions. Or being last in the queue to check-in for a fully loaded Boeing 747.

Take it upon yourself to buy this as a gift for a loved one and you shall be guilty of having a well-developed mean streak, not to mention the unsavoury quality of enjoying pain in others. So go on. One knows one wants to.