Rules:
Normal Sudoku rules apply. Digits along a "Between Line" must lie between the values placed in the circled ends of that line.
PS. If you need help, have a look at the Plait Sudoku I published yesterday:
Solution code: Row 8, Column 8 (18 digits, no spaces)
on 8. September 2021, 06:44 by cdwg2000
To be honest, the combination between and is not a good idea.