Logic Masters Deutschland e.V.

This puzzle was my entry in round 1 of the Puzzle Agency Championship.

Rules:

Normal Sudoku rules apply - Place digits from 1-9 into each cell without repeating in a row, column, or 3x3 box.

Zipper Lines (Knapp Daneben) - On each lavender zipper line, pairs of digits an equal distance from the marked center cell of the line sum to 1 greater or 1 less than the digit in that central cell.
For example, 3-4-7-2-5 is valid because 4+2 = 7-1 and 3+5 = 7+1.

The digit in the gray circle is 1 greater or 1 less than an even integer (it is odd).

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Play the puzzle on Sudokupad

I hope you enjoy the puzzle! :-)