Logic Masters Deutschland e.V.

My second puzzle, had an idea for a difference constraint.

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Normal sudoku rules apply

Divergent Difference Constraint: Digits in column N must not have a difference of N with any orthogonally adjacent digits. Columns are numbered left to right from 1 to 9. Example: If the digit 4 is in R2C3, the digits 1 and 7 cannot be in R2C2, R1C3, R3C3, or R3C4

Anti-knight: Cells separated by a chess knight's move must not contain the same digit

Modular Line: Any 3 adjacent cells along the blue line must contain one digit from each of {3,6,9}, {1,4,7}, and {2,5,8}

Arrow: Digits along the arrow sum to the digit in the attached circle

Little Killer: Digits on the indicated diagonal sum to the number outside the grid

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