Logic Masters Deutschland e.V.

This is the third 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:

Lake

Pencil

DNA

Nibble

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: (DNA)
  Digits seperated by an X sum to 10, digits seperated by a V sum to 5.
• Kropki pairs: (Lake, Pencil)
  Digits seperated by a white dot must be consecutive.
• Inequality: (Lake)
  The inequality sign points to the smaller digit.
• German Whisper: (Pencil, DNA)
  Adjacent digits on a green line differ by at least 5.
• Renban: (Pencil, DNA)
  Digits along a purple line form a set of non-repeating consecutive digits.
• Region Sum Line: (Lake, DNA)
  Digits on a blue line sum to the same value in each region it passes through.
• Thermometer: (Pencil)
  Digits along a thermo increase from the bulb end.
• Same Difference Line: (Pencil)
  Each pair of adjacent digits on a turquoise line must have the same difference.
• Killer: (Lake)
  Digits in a cage do not repeat and sum to the total given.
• Variant Sandwich: (Nibble)
  Clues outside the grid give the sum of digits between the highest and lowest digits in that row/column. ?s represent a number from 1-9.

There other parts of this pack can be found here: Part 1 Part 2 Part 4