Logic Masters Deutschland e.V.

8x8 sudoku rules apply, using the digits 0-7.
Place the digits 0-7 once in every row, column and 4x2 region.
For accessibility, most lines have been marked with an abbreviation to distinguish them as an alternative to the line's colour.
Cells connected by a pink Renban [RN] line form a set of consecutive digits, in any order, without repeats.
Adjacent digits along a green Whisper-5 [W5] line must differ by at least 5.
Adjacent digits along an orange Whisper-4 [W4] line must differ by at least 4.
Adjacent digits along a red Parity [PR] line, one digit is odd and the other digit is even.
Along a teal 3 Modular [3M] line, every set of consecutive three digits contains one from the set of {1,4,7}, one from {2,5}, and one from {0,3,6}.
Along a purple Zipper [ZP] line, cell pairs equidistant from the center dot, sum to the same value.
There are two separate Palindrome lines - a double grey Palindrome line and a single grey Palindrome [PD] line. Digits on a Palindrome line read the same forwards and backwards.
Digits in cells joined by an X sum to 10. Digits in cells joined by an V sum to 5.
Not all Xs or Vs are necessarily given.

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