Logic Masters Deutschland e.V.

The title of this puzzle isn't meant to be sarcastic - it was designed to introduce a few global entropy mechanics that I enjoy.

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Rules:

- Normal Sudoku rules apply.

- Global Entropy - every 2 by 2 box of cells in the grid must contain a low digit (1, 2, or 3), a middle digit (4, 5, or 6), and a high digit (7, 8, or 9).

- Modular Lines - any set of three digits in consecutive position on a teal modular line must contain a digit from the set (1,4,7), the set (2, 5, 8) and the set (3, 6, 9).

- Palindromes - the full string of digits along a thin gray palindrome line must read the same backwards and forwards.

- Killer cages - digits inside a killer cage must not repeat and must add up to the value in the top left corner of the cage.

- Kropki dots - digits separated by a white Kropki dot differ in value by 1; digits separated by a black Kropki dot have a ratio of 2:1. No negative constraint.

- X pairs - digits separated by X sum to 10. No negative constraint.

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Sudokupad