Normal sudoku rules apply. Draw a one-cell-wide loop of orthogonally connected cells. The loop can't touch itself, not even diagonally. Additionally, the loop consists of non-overlapping segments, each of which sums to 10. Digits may repeat on the loop and even within an individual segment, if allowed by the other rules. The digit in a caged cell shows how many (of the up to 8) surrounding cells are on the loop. The caged cells cannot be on the loop. The number in the top-left corner of a caged cell shows the sum of digits in the loop cells around it.