Threlwp
first sudoku I have ever created :)
Rules:
1. Normal classic rules apply
2. Standard sandwich rules: an outside clue shows the sum of digits between 1 and 9 in that row/column
3. cells separated by a white dot have a difference of three
link to ctc app to solve online
Hope you enjoy !!!
Solution code: enter the digits in column 8 and then in column 4 with no spaces at all