Logic Masters Deutschland e.V.

Rules:

Normal sudoku rules apply.

Dutch Flat Mates: Every 5 in the grid must have a 1 directly above it or a 9 directly below it. It may have both, but it doesn't need both.

Slot Machine: Each column contains exactly the same sequence of nine digits in the same order. The sequence can start at any point along it, and when it reaches the bottom, it wraps around again to the top.

Ten Lines: Digits along gray lines must be broken into one or more contiguous groups of cells that each add to ten. These groups cannot overlap.

Index Lines: The digit in the Nth cell along a teal line (starting from the diamond) indicates the position along the line where the digit N appears.

Region Sum Lines: Box borders divide each blue line into segments with the same sum.

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Puzzle Link: SudokuPad

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My youtube channel on solving sudoku: Crusader Puzzle