Logic Masters Deutschland e.V.

I chose the letters from "upside down" because I set this puzzle upside down (not literally 🙃) as part of a setting challenge. I started setting from a predefined grid and worked my way back. I don't think it's the right way for me to set a puzzle and I'll probably never do it again. however, I'm pretty happy with this puzzle so I decided to share.

I made up this ruleset myself, so I also made an example 6X6 puzzle which you can try here. I would love to know if you have seen a puzzle with similar rules.

Rules:

Normal sudoku rules apply. Place the digits 1-9 once each in every row, column, and 3x3 box.

The letters 'U', 'P', 'S', 'I', 'D', 'E', 'O', 'W', and 'N' each represent a different value from 1-9. The value of each letter must be deduced. Cells separated by a white dot have a difference equal to the indicated value. Cells separated by a black dot have a ratio equal to the indicated value. Digits in cages must sum to the small value in the top left corner of the cage.

Solve online: SudokuPad, SudokuPad with letters key