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Test your problem-solving skills with this 21-minute video featuring seven challenging puzzles that require clever thinking to solve. Work through each brain teaser as they're presented in sequence: a curious puzzle from a historical book collection, a pencil arrangement challenge where all must touch, a 4-coin problem, two mathematical riddles from Reddit, the Sherlock Holmes problem-solving challenge, and finally a chess knight problem connected to Fields Medal winner June Huh. Each puzzle is clearly timed in the video (starting at 0:00, 2:31, 4:44, 6:44, 8:13, 9:40, and 12:21) with detailed solutions provided. Challenge yourself to solve these tricky puzzles before seeing the answers explained by MindYourDecisions.
