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Old 01-21-2008, 08:58 PM   #24 (permalink)
Barstool
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Quote:
Originally Posted by basherone
the three houses and three utilities puzzle has a "cheat that will only work if completed on a sheet of paper - take the final line around the back of the sheet of paper.
But then that becomes three dimensional, not two, thus only proving that the puzzle is impossible.
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