Logic Masters Deutschland e.V.

What a lovely bouquet! And not expensive at all (according to the price on the package band)!

Sudoku-Pad link: https://sudokupad.app/mu35v3ybin

Normal Sudoku rules apply. Digits in a cage (block 7) sum to the number in the corner. Lines:

Green: German Whisper (adjacent digits differ at least by 5)

Orange (block 9): Dutch Whisper (adjacent digits differ at least by 4)

Pink (blocks 3+6 and 8): Renban (consecutive digits in any order)

Yellow (blocks 1+2+4): Nabner (non-consecutive digits in any order)

Lavender (block 4): Zipper (digits in the same distance to the centre sum to the digit in the centre)

Light blue (blocks 2+3): Polarity (adjacent digits must alternate between odd-even)

Red (block 3): Modularity (three adjacent digits must have different remainders when divided by 3 [remainder 1: 1,4,7; remainder 2: 2,5,8; remainder 0: 3,6,9])