Fortnightly Topic Challenge #44: Introduce a new grid deduction genre to the community

Question

This is the third installment of the Fortnightly Topic Challenges Rerun described here and the forty-fourth installment of the FTCs overall, with topics suggested and voted on here. This fortnight's topic is "Introduce a new grid deduction genre to the community" (suggested by Bubbler) and will span from the 29th of November to the 12th of December. During this period, we will compile the list of relevant questions and post it as an answer to this question.

In the meantime, please go and propose and vote on future challenges!

Everyone have fun, and happy puzzling!

_{Link to other Fortnightly Topic Challenges.}

NOTE
The suggestion is copied to this post for posterity.

Introduce a new grid deduction genre to the community

We already had two Fortnights related to grid-deduction: vanilla one as #24, and hybrids as #32. So this one will be the threrun in this topic. Then you ask, "Why the third time?"

I enjoy grid deduction a lot, but the same genre posted over and over builds up a "genre fatigue". Recently I introduced two new types of grid deduction puzzles:

• Trichain, which I made up from scratch, and
• Heteromino, which I found by randomly browsing the Internet (googling the title gives very few results).

There must be a reason to the fact that the two "introduction" puzzles are among the top 3 of all of my puzzles, and repeated posts of the same genre earn fewer and fewer upvotes, even though the quality gets better (at least IMO).

Therefore, the challenge is as the title says: Introduce a new grid deduction genre to the community!

Rules:

• The genre must be unseen on Puzzling before the start of the Fortnight.
  • Exception: a genre qualifies if it has only appeared as a part of a mashup puzzle of 3 genres or more. Icebarn qualifies because it has only appeared in a connect wall and a massive loop puzzle, and Nurimaze qualifies because it has only appeared in a massive "needs a name" puzzle.
• Only one puzzle per user per genre qualifies. (This is to account for the possibility of multiple users working on the same new genre.)
• For mashups of multiple genres, at least one of the genres must satisfy the above. An existing genre with extra rule(s) or mashups of existing genres do not qualify.

Answer 1

List of all questions published as part of the Fortnightly Topic Challenge #44:

• Nurimisaki Puzzle: Introduction by Alaiko
• Tatamibari: an introduction by bobble
• Norinori: QR-Code-ish by athin
• Office Park: A Grid Deduction Puzzle by Jeremy Dover
• Dosun-Fuwari: an introduction by melfnt
• Palette: A Multicoloured Grid Deduction Puzzle by Matthew Jensen
• Pentopia: One-way Crossing by athin
• Hokuro Puzzle: Introduction by sarsaparilla
• Sashigane: The Fives Have It by bobble
• Greener Grasses: Around the Trees by athin
• Fighting Fish: An Aquarium-Star Battle Hybrid by Jeremy Dover
• Cross the Streams: Three? by athin
• Light and Shadow: Equal and Antisymmetric by Alaiko
• Neighbors Grid Puzzle: A Puzzling SE by athin
• add further entries in the form https://puzzling.stackexchange.com/questions/<question-ID> by [username](https://puzzling.stackexchange.com/users/<user-ID>)

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The highest-voted three of these are:

• Hokuro Puzzle: Introduction by sarsaparilla, with a score of 25 at the end of the fortnight.
• Norinori: QR-Code-ish by athin, with a score of 16 at the end of the fortnight.
• Nurimisaki Puzzle: Introduction by Alaiko, with a score of 15 at the end of the fortnight.

The most viewed three of these are:

• Tatamibari: an introduction by bobble, with 782 views at the end of the fortnight.
• Hokuro Puzzle: Introduction by sarsaparilla, with 668 views at the end of the fortnight.
• Nurimisaki Puzzle: Introduction by Alaiko, with 631 views at the end of the fortnight.