"Capture the Flag" (CTF) typically refers to a type of game or competition that involves teams or individuals attempting to find and capture flags (which can be virtual or physical) while trying to defend their own. The concept is used in different contexts, including physical outdoor games, computer security competitions, and gaming. ### 1. **Outdoor Game:** In traditional outdoor versions, CTF is usually played in a large outdoor area where two teams have their own flag located in their territory.
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