Intruder Challenge

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How to play Needle and Haystack

Solve the Search Challenge using your best thinking and the clues provided. Clues must be deciphered and do not necessarily make good keywords. Each time an incorrect answer is entered, another clue is provided and a point is deducted.

Points indicate the difficulty level of the Challenge.

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Since ancient times, walls like the Great Wall of China have been built to thwart intruders

They aren't always effective

What WALL is the first known strategic failure?

    Clue 1: Not the Great Wall