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Can you draw a line through all of the edges in this picture?
Each side is broken into 2 or 3 edges, and there are also 7 edges inside that you have to cross. The line must be continuous, and cross each edge exactly once.
Note: this puzzle is not interactive, and cannot be clicked.
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Answer
There is no possible way to complete the line, there will always be one edge left, or you have to cross an edge twice.