How to make a Birthday Magic Square
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Magic Squares of Squares (are PROBABLY impossible) - Numberphile
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Follow-up: Birthday Magic Square
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The Doomsday Algorithm - Numberphile
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Mastermind with Steve Mould
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How to Compute Square Roots in Your Head
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MegaFavNumbers - The Even Amicable Numbers Conjecture
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Making efficient Platonic and Archimedean shapes in a kaleidoscope
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