Twelve Spots

Normal 6x6 sudoku rules apply.

Draw 6 lines, each with a different turquoise spot at both ends. Each line must occupy at least 3 cells, and may move orthogonally and diagonally. Lines may not branch, cross each other, or share cells.

Each line is a 'same difference' line. Every pair of adjacent cells along a line has the same difference - this is its 'difference value.'

Every line has a different 'difference value'.

Digits in a cage sum to the total in the corner.