Logic Masters Deutschland e.V.

This puzzle is similar to Tip of the Iceberg but uses Zipper Lines instead of arrows. It also features German Whisper Lines to create some interactions with high/low coloring. Another similar (but way more linear) puzzle is Lavender in the Fog. Thanks to the testers on the CtC-fan discord for testing and feeback!

• Normal Sudoku rules apply.
• The grid is covered in fog. Placing correct digits reveals clues in the surrounding 3 by 3 area.
• Rotational Symmetry: If the grid is rotated 180 degrees, the matching cells add up to 10 e.g. R3C2+R7C8=10.
• Digits an equal distance from the center of a lavender 'Zipper Line' sum to the digit in the middle of that line.
• Adjacent digits on a green German whispers line differ by 5 or more.
• All lines are exactly 5 cells long, only move orthogonally and don't share cells with other lines.

Click here to search for more Zipper Lines puzzles on LMD. If you've never solved a puzzle with this ruleset before, I'd recommend A Totally Balanced Approach as an introduction.