Logic Masters Deutschland e.V.

This puzzle may look intimidating but will crack open like a nut with the right solving strategy. I believe it has some very interesting logic.

Rules

Normal sudoku rules apply.
Digits separated by a white dot are consecutive.
Digits separated by a black dot are in a 1:2 ratio.
Digits separated by a V sum to 5.
All dots and Vs are given. However if two adjacent digits from the same region are simultaneously in two relationships listed above, then the dots/Vs cancel out and disappear from the grid.

I.e. 2 can go next to 1 or 3 in the same region but cannot touch 1 or 3 from a neighbouring region. Otherwise anti kropki and anti V rules apply.

Good luck and happy puzzling

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penpa+

CtC