Logic Masters Deutschland e.V.

This is my belated birthday gift for the most esteemed sujoyku who has been not only a supporter of my work, but a true friend. Cheers!

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Rules:

- Normal Sudoku rules apply.

- Killer cages - digits inside a killer cage are distinct and add up to the sum in the upper left corner of the cage.

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

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

- Region Sum Lines - the digits on a blue Region Sum Line sum to the same amount on either side of a box border.

- XV sums - digits separated by V sum to 5; digits separated by X sum to 10. No negative constraint.

- Kropki - digits separated by a white Kropki dot are consecutive; digits separated by a black Kropki dot are in a 2:1 ratio. No negative constraint.

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Sudokupad