Logic Masters Deutschland e.V.

Cave Akari (10x10 teaser)

(Published on 1. December 2020, 10:00 by Mark Sweep)

This Friday I will post a 15x15 Cave/Akari hybrid. This is a teaser to get a bit of a feel for it.

Cells have to be shaded to create cave walls, such that these walls are orthogonally connected to the edges of the grid. The unshaded cells (the cave) need to remain orthogonally connected to each other to be able to traverse the cave. The cave also needs to be fully lit up, so lightbulbs need to be placed throughout the cave. Lightbulbs light up the cave in each orthogonal direction until a wall is reached. Two lightbulbs are not allowed to see each other.

Every clue in the grid is either a Cave (unshaded) or an Akari clue (shaded). Cave clues indicate how many cave cells it sees in orthogonal directions, including itself. Akari clues are part of the wall and indicate how many lightbulbs are orthogonally adjacent to the clue.

An example of what a finished grid could look like is shown below. Orange cells are lightbulbs.

Solve on Penpa

Solution code: For each row: total of lightbulbs + different wall segments, from top to bottom. The example puzzle would be 441224 (e.g. row 1 has 2 lightbulbs and 2 wall segments, so it is a 4 in the solution code).

Last changed on on 1. November 2021, 17:01

Solved by NikolaZ, H1324851344, cdwg2000, bernhard, Player, marcmees, Eggr, Jesper, CJK, MagnusJosefsson, SquaringSquirrel, moss, zorant, hurrdurr, ropeko, Yohann, zhergan, jessica6, Zzzyxas, Jds2, wuzzle, ... Catlover, CahounCZ, ildiko, dante1, filmore, KNT, Nytik, ns08, Citrinate, Phistomefel, h5663454, 85392, Agent, TJReds, Gliperal, Vasefire, jkuo7, Neb, csilva, DarthParadox, TheZwierz, webato
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Comments

on 8. April 2023, 07:24 by TJReds
@Zzzyxas Ahhh okay, thank you very much! Kinda sad I missed that. ;P

on 29. January 2023, 10:32 by Phistomefel
Very nice puzzle! Thank you, Mark Sweep! :)

on 9. September 2022, 18:07 by KNT
Awesome warm up, excited to try #2!

Last changed on 1. November 2021, 17:02

on 1. November 2021, 17:01 by Mark Sweep
Updated solution code description, thanks @bacad

on 30. October 2021, 21:14 by bacad
Very nice puzzle! The "Lösungscode" description does not harmonize with the example.

on 22. October 2021, 18:28 by BenceJoful
Beautiful!

on 28. July 2021, 17:47 by Mark Sweep
Updated tags

on 2. December 2020, 22:03 by Mark Sweep
Changed solution code description, since the example was slightly changed.

Last changed on 2. December 2020, 22:02

on 2. December 2020, 19:46 by tubahat
Can a cave clue square also contain a lightbulb?

-- Yes, it could, I have changed the example such that it is more clear.

Difficulty:3
Rating:97 %
Solved:67 times
Observed:7 times
ID:0004UA

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