Outside the Box

An old puzzle asks: Without lifting your pencil from the paper, can you draw a series of four straight lines that passes through all nine points in this grid?

outside the box 1

The trick is to realize that the lines can extend beyond the grid’s area:

outside the box 2

In 1970 Solomon Golomb and John Selfridge found a way to draw a closed path of eight segments that passes through all 25 points in this grid:

outside the box 3

Can you?

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