Puzzlerium Tour: Balance Loop

 

Theme: SEVEN

Rules: Draw a single, non-intersecting loop, vertically or horizontally through the centres of the cells. The path of the loop passes through each of the given circles. Furthermore, the lengths of the portions of the loop on either side of the given circle, extending as far as before the loop turns, should add up to the given number. All black circels should have segments of unequal lengths on either side before turning, while white circles have equal lengths.