| Index |
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Beginner |
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Apprentice |
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Junior Noggin |
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Young Scientist |
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Serious Puzzler |
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Master Puzzler |
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Wizard |
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Supreme Wizard |
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Black Hole |
singularity, event horizon |
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Alexander Calder |
balance, mobile, weight, physics |
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Basket of Eggs |
Chinese mathematician |
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Einstein's Neighborhood |
Albert Einstein |
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Flora Dora |
Indians Tell Truth |
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Hastings |
Battle of Hastings, Norman Conquest |
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Kant's Clock |
Emanuel Kant, Time |
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Bridges of Konigsburg |
Euler, graph theory |
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Lily Problem |
geometry |
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Measure the Moon |
H. G. Wells, lunar, rockets |
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Mad Hatter |
Lewis Carroll, Alice in Wonderland |
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Monty Hall |
Let's Make A Deal, Marilyn Vos Savant ,tryranny of the tribe |
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Mt. Washington |
Global Plane |
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Three Pennies |
Feeling Lucky |
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Pirate Gold |
Edward I, game theory, John Von Nuemann |
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Sherlock's Muddle |
Arthur Conan Doyle, Sherlock Holmes |
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Space Elevator |
Arthur C. Clarke, Foundations of Paradise |
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Stag Hunt |
Nash, tragedy of the commons |
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Sun Spots |
Solar system, SOHO, nutrinos, hydrogen |
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Vitruvian Man |
Leonardo DaVinci |
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 New . . . |
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New Puzzles . . . 
