Logic Masters Deutschland e.V.

Just playing around with ziffer/zipper interaction. I hope you'll find the break-in on this one rewarding and fun. Thanks for playing!

Rules:

Place the digits 1-9 in each row, column, and box.

Lavender lines are Zipper lines. Any two cells an equal distance from their center cell must sum to the digit in the center cell.

Mint lines are Ziffer lines. Any two cells an equal distance from their central cell must have a difference equal to the digit in the center cell.

Play here on SudokuPad