This puzzle combines Sandwich Sums with German Whispers.
German Sandwich Whispers
Sudoku – each row, column & 3x3 box contains the digits 1-9
Sandwich – outside clues are the sum of the digits between the 1&9 in that row or column
German whispers – adjacent digits on a line have a difference of at least 5
Use one of the following links to play online:
If you are a member of the CtC discord you can find this puzzle in the sudoku test submissions channel here