This should not work in general. It returns false-positive for consecutive 1 5 7 :-)
This should not work, but test suite only requires us to check for groups of three in columns.
Thanks for noticing that...I'll edit the test suite and fix that.
Is the Point in a Circle?
Derivative of polynomial
Area of an equilateral triangle
Matrix multiplication across rows
Numbered lottery balls into cells
Converting numbers back from extended form
Rolling maximums above a threshold
Numbers in extended form
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