Hither be a puzzle with Between Lines, nice long ones. Digits may run from one end to the other, and yet cannot escape, trapped between the circles at each end.
Rules:
Normal Sudoku rules apply.
Digits along lines have values between the digits in the two circles to which each line is attached.
The digits in each cage sum to the small number in the top left corner of that cage.
Estimated difficulty: 1.5 out of 5
Solve on SudokuPad