Mystery Sandwich Sudoku
This is a variant of Sandwich Sudoku. Three variants of sandwich rules appear and require the puzzle solver to judge for themselves: Standard Sandwich Sudoku, Sandwich "肉夹馍（RouJiaMo）", Sandwich "春卷（ChunJuan）".
The usual sudoku rules apply.
The external prompt clue is the largest prompt number that meets the three rules.
1、Standard Sandwich Rules: A number clue outside a row or column is the sum of the digits between the 1 and the 9 in that row or column.
2、Sandwich Sudoku--肉夹馍（RouJiaMo）Rules:The number indicated outside the box represents the sum of other numbers between the first number in the row and the number one greater than it.
3、Sandwich Sudoku--春卷（ChunJuan）Rules:The number outside the box represents the sum of the numbers between the largest number and the smallest number in the first 6 cells of the row and column from that position.
This is the main dish, welcome to enjoy！
The author of the puzzle is my friend 胡蒙汀(Hu Mengting) from China. I hope you like it.
Your feedback and comments are highly appreciated :) Enjoy !Catalogue of Hu Mengting（胡蒙汀）'s problems:
Lösungscode: The diagonal line goes from top left to bottom right, and then the diagonal line goes from top right to bottom left.(A total of 18 numbers, no spaces in between).
am 14. Januar 2021, 16:09 Uhr von cdwg2000
Glad you like it.
am 14. Januar 2021, 13:02 Uhr von marcmees
triple mystery - triple fun with nice logic.