Logic Masters Deutschland e.V.

Rules:

1. Standard Sudoku rules apply.

2. Each fenced area encloses a unique sum of digits.

3. All orthogonally adjacent digits with a 1:4 ratio are separated by a dark green dot.

It unfortunately won't check the answer but here's an approximation of the puzzle using Sudokulab.

Rule Clarifications:

Rule 2: The sum of every digit enclosed within a fenced area is unique when compared to the sum of every digit enclosed within any other fenced area. For example, if a fenced area included exactly three digits and those digits were 4, 5 and 6, then that fenced area encloses the sum of 4+5+6=15. This would mean no other fenced area on the board encloses digits which also sum in total to 15. The board includes two enclosed areas with exactly one digit, one enclosed area with exactly two digits, and 24 enclosed areas with exactly three digits.

Rule 3: Orthogonally adjacent digits separated by a dark green dot must have a ratio of 1:4. e.g. the digits must be 1 and 4 or 2 and 8. The digits may be placed in either order. There are exactly five such pairs in the puzzle and all five pairs have been marked with a dark green dot. Diagonally adjacent digits are not constrained by this rule.

Notes:

The concept for this puzzle was inspired significantly by the puzzle "Unique Values" which was created by Mesmer and featured on Cracking the Cryptic with the remarkable Simon Anthony here:

https://www.youtube.com/watch?v=u0FhERdlWFc

This is my first attempt at setting a puzzle so hopefully I've made this post correctly. I do hope someone out there enjoys it. Any feedback is welcome.

Happy Solving!