Hercules was to drive away an enormous flock of birds which gathered at a lake near the town of Stymphalos.
Arriving at the lake, which was deep in the woods, Hercules had no idea how to drive the huge gathering of birds away.
The goddess Athena came to his aid, providing a pair of bronze krotala, noise making clappers similar to castanets. Climbing a nearby mountain, Hercules clashed the krotala loudly, scaring the birds out of the trees, and then shot them with bow and arrow.
Each Labor introduces a puzzle consisting of 36 square tiles which must be placed in the correct order, side by side, to form a 6 by 6 square board.
To reach the solution, you or your team will embark on a mental journey that will require you to perceive the puzzle's underlying patterns, which can contain logical, mathematical, geometric and cryptographic elements.