The TeleChallenge is a DEFCON contest that has been running since DEFCON 25 (2017).
The TeleChallenge is a fully immersive puzzle challenge playable only via telephone. It combines real-world clues with phreakable systems in a battle of wits and skill. While anyone with a phone can play it is not for the faint of heart. Winning requires an intense level of dedication from the people and teams playing the game.
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[ 0.19 ms ] story [ 15.6 ms ] threadThe TeleChallenge is a fully immersive puzzle challenge playable only via telephone. It combines real-world clues with phreakable systems in a battle of wits and skill. While anyone with a phone can play it is not for the faint of heart. Winning requires an intense level of dedication from the people and teams playing the game.