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Can You Solve The 6 Cards Game?
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Knight's Tour - Numberphile
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The Viral Balloon Puzzle - The REAL Answer Explained (Using Ph.D. Level Math)
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Can you solve the cheating royal riddle? - Dan Katz
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A Simple Riddle That Nearly Fooled Albert Einstein!
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A Problem WolframAlpha Didn't Solve, But You Can (615 + x^2 = 2^y)
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