Logic Masters Deutschland e.V.

Here's my latest puzzle. If you are intimately familiar with the consequences of the pairing of these two global constraints, it will be a 1-star. If you aren't, it will be significantly harder. I posted it at 2-star as a compromise since I had to pick something but I'm curious to see where the user ratings end up. As always, feedback is welcomed and encouraged, so let me know what you think in the comments below.

• Normal Sudoku Rules: Fill each row, column, and 3x3 box with the digits 1-9 once each.
• Global entropy: Every 2x2 square of cells must contain a low digit (1,2,3), middle digit (4,5,6) and high digit (7,8,9).
• White Kropkis/Black Kropkis: Digits in cells separated by a white dot are consecutive. Digits in cells separated by a black dot have a 1:2 ratio.
• Renban: Purple lines contain a non-repeating set of consecutive digits in any order.
• Global Modularity: Every 2x2 box must contain at least one digit from each of the sets {1,4,7}, {2,5,8} and {3,6,9}.

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