Logic Masters Deutschland e.V.

Rules:

• Normal diagonal sudoku rules apply.
• Digits joined with a black dot are in the 1:2 ratio. Not all dots are given.
• Digits in cages with the same letter sum to the same total, to be determined by the solver.
• Pink circles are vampires: they take exacly one sip of blood from an orthogonally adjacent cell. For cages purposes, vampire cells count as increased by exactly one and the taken cells count as decreased by exactly one. Vampire cells do not take blood from black dots.

Play online using Sudoku Pad or F-Puzzles.

Using the vampire constraint introduced by damasosos92.

In case you get stuck, see this solve video.