Logic Masters Deutschland e.V.

This is the fourth and final part of a collection of puzzles I have created using the octoquadri ruleset invented by Analytical Ninja. I set a bunch of these puzzles across several months because I found the ruleset interesting, and once I had enough I collected them into a pack. I'm now uploading the pack here, split into 4 parts roughly according to difficulty, each containing 4 puzzles.
You can download the full pack as a pdf here.

Here are the links:

Radio

Window Pane

Viewport

Mutation

Rules: (With the puzzles each variant appears in)

• Octoquadri: (All puzzles)
  Fill the grid with 8 of the digits 1-9, such that each digits appears exactly twice, and no digit repeats in a row, column, or 2x2 box.
• XV: (Radio, Window Pane, Mutation)
  Digits seperated by an X sum to 10, digits seperated by a V sum to 5.
• Kropki pairs: (Viewport)
  Digits seperated by a white dot must be consecutive.
• Inequality: (Window Pane, Mutation)
  The inequality sign points to the smaller digit.
• German Whisper: (Radio)
  Adjacent digits on a green line differ by at least 5.
• Dutch Whisper: (Window Pane, Mutation)
  Adjacent digits on a green line differ by at least 4.
• Renban: (Viewport, Mutation)
  Digits along a purple line form a set of non-repeating consecutive digits.
• Region Sum Line: (Mutation)
  Digits on a blue line sum to the same value in each region it passes through.
• Thermometer: (Viewport, Mutation)
  Digits along a thermo increase from the bulb end.
• Arrow: (Radio)
  Digits along an arrow sum to the digit in the circle.
• Killer: (Window Pane)
  Digits in a cage do not repeat and sum to the total given.
• Little Killer: (Viewport)
  Digits along an indicated diagonal sum to the total given.

There other parts of this pack can be found here: Part 1 Part 2 Part 3