Logic Masters Deutschland e.V.

This puzzle was made for Isamook's monthly prompt. It combines the style and theme of my puzzle Hyperdoku using damasosos92's variation of the vampire constraint

Solve in SudokuPad

Solve in Penpa

Solve each individual grid in sudokupad:
Grid 1: https://sudokupad.app/ibdpk5fiqn
Grid 2: https://sudokupad.app/qzzij7kf4j
Grid 3: https://sudokupad.app/kmuq87awjz
Grid 4: https://sudokupad.app/bpow1yrzzr
Grid 5: https://sudokupad.app/ca6vby1j3u
Grid 6: https://sudokupad.app/gh9fg5yc2j
Grid 7: https://sudokupad.app/8wyt9ed33r
Grid 8: https://sudokupad.app/nqoa5lc33g
Grid 9: https://sudokupad.app/k878oz17op

- The grid is made up of nine non-overlapping 9x9 grids.
- Within each individual grid:
- Normal sudoku rules apply (mark the digits 1-9 once each in every row, column, and 3x3 box).
- Vampire: Mark one vampire cell in every row, column, and 3x3 box. Vampire cells take exactly one sip of blood from an orthogonally adjacent cell. For clue purposes, vampire cells count exactly one more and the taken cell counts exactly one less. Two vampires may take from the same cell, in this case the taken cell counts exactly two less.
- Values may be less than 1 or greater than 9. Some vampires are not picky on which cell they take from.
- Each digit 1-9 appears exactly once in a vampire cell.

- Global constraint:
- Global disjoint: No two grids may contain vampires in the same cell. Example: if r1c1 of grid #1 is a vampire, then r1c1 for every other grid cannot be a vampire.

- Constraint Rules:
- All constraints are standard using values instead of digits.
- No negative constraints.
- If a line crosses between multiple grids, the cells outside a grid are not affected by the line constraint and do not affect adjacent cells along the line. Examples:
a) r2c1 of grid #2 sums the values of only r2c9 and r1c9 of grid #1, not the cell between.
b) r9c9 of grid #7 and r9c1 of grid #8 are considered to be adjacent and therefore must contain values that differ by at least 5.

- (Grid #1) Arrow: Values on an arrow must sum to the value in the arrow's circle.
- (Grid #2) Kropki: Cells joined by a white dot must contain consecutive values. Cells joined by a black dot must contain one value that's double the other.
- (Grid #3) Region Sum Line: Values along a blue line must sum to the same number within each 3x3 box the line passes through.
- (Grid #4) XV: Cells joined by a red X must sum to 10. Cells joined by a blue V must sum to 5.
- Grid #5 uses every constraint.
- (Grid #6) Double Arrow: The sum of the values along a double arrow line is equal to the sum of the values in the circles at either end of the line.
- (Grid #7) Renban: Cells along a purple line contain a set of consecutive, non-repeating values in any order.
- (Grid #8) German Whisper: Adjacent values along a green line must differ by at least 5.
- (Grid #9) Thermo: Values on a thermometer must strictly increase as they move away from the bulb.