The problem is asking for tangent circles.
Problem with the third test suite
in 3rd case,
they intersect at two points.
In geometry, tangent circles (also known as kissing circles) are circles that intersect in a single point.
Check to see if a Sudoku Puzzle is Solved
Back to basics 15 - Benchmark
Unique values without using UNIQUE function
Create an n-by-n null matrix and fill with ones certain positions
Maya long Count
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