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A puzzle from 2-dimensional or 3-dimensional geometry centered around matchsticks, often involving moving, adding, or removing some to achieve some defined goal.
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votes
What is the largest number you can create with 0000 by moving only two sticks?
Move the top and bottom matchsticks from the 3rd zero to make:
Where the first two characters are B's thus: BB110
And BB refers to the Busy Beaver Function
The Busy Beaver function is non-computabl …