Logic Masters Deutschland e.V.

This is my homage to "Bougainvilliers Betacyanines, though in this case I applied the constraint globally, not just on a Literal Line.

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Rules:

- Normal Sudoku rules apply.

- Lingua Franca - in each 2 x 2 box of cells, there must be at least one digit from each of the following sets: (1, 2, 6) [digits with three-letter names], (4, 5, 9) [digits with four-letter names], and (3, 7, 8) [digits with five-letter names].

- German Whispers - neighboring digits along a green German Whisper line must differ in value by at least 5.

- Dutch Whispers - neighboring digits along an orange Dutch Whisper line must differ in value by at least 4.

- Renban - digits along a purple Renban line form a consecutive set in any order.

- V sums - digits separated by V sum to 5. No negative constraint.

- 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 1:2. No negative constraint.

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Accessibility info:

Renbans are located entirely in boxes 2 and 8, as well as cells 6, 8, and 9 of box 1, and cells 1, 2 and 4 of box 9.

Dutch Whispers are the triangles not connected to any other lines.

All remaining lines are German Whispers.

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Sudokupad