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3-D Path Counting Brain Teaser - 08/26/2011
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Path Counting Brain Teaser - 08/26/2011
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Light Bulb Switching Brain Teaser - 08/26/2011
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Forehead Numbers Brain Teaser - 08/26/2011
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Blue Forehead Room Solution - 08/26/2011
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Brain Teaser: Blue Forehead Room - 08/26/2011
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Alien Abduction Brain Teaser - 08/26/2011
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Toggler Brain Teaser - 08/26/2011
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Liar Truthteller Brain Teaser - 08/26/2011