ISIS Puzzle - The Hardest In The World?
We see loads of ingenious puzzles here at Firebox, but nothing has ever grabbed us like Isis. Maybe that's because this interactive mind-mangler contains a uniquely coded key that will open one of several golden pyramids hidden throughout the UK - and here's the good bit: the pyramids contain silver and gold coins worth thousands of pounds! Mmm... money.
But before all you puzzlemeisters start booking your flights to St Tropez, there is a slight catch: Isis is said to be the hardest puzzle in the world. In fact its creators reckon it is virtually impossible to crack. The good news, however, is that Isis is one of the most enthralling, mesmerising, infuriating, take-over-your-life puzzles in the history of the universe.
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