Logic Masters Deutschland e.V.

Lighthouses Nurikabe #2

(Published on 12. January 2023, 01:08 by KNT)

...And now for the main course!

Rules:

Divide the grid into island cells and water cells. The water is all connected, and contains no 2x2 area. Every island contains exactly one number that is its size.

Some ships are to be placed in the water. If a number is in a water cell, it is a lighthouse, which indicates the total number of ships that share a row or column with that lighthouse. Ships may not touch each other, or lighthouses, even diagonally. Lighthouses may only touch other lighthouses diagonally.

Note: Every hint is "knapp daneben", i.e. too large or too small by one.

The puzzle can be solved online here.

Answer check is enabled with grey shading for water cells, and stars in composite mode must be placed at the location of each ship. The star battle tools that Penpa+ provides will be useful for this puzzle. I also recommend marking the possibilities for ship counts in the margins of rows and columns.

Solution code: Row 1 followed by Row 5, S for ship, L for island cell, and W for water cell.

Last changed on on 12. January 2023, 01:12

Solved by Niverio, polar, Koalagator2, Jesper, Vebby, MagnusJosefsson, Jaych, cmb, filuta, jkuo7, Alex, Gliperal, Myxo, Piatato, AnnaTh, rmn, misko, lerroyy, Lyun Licuss, akamchinjir, lupo, pandiani42, Christounet, Paletron, Nick Smirnov
Full list

Comments

on 27. December 2023, 13:21 by Christounet
Superb pair of puzzles ! The opening of this one is so good. One needs to use the right method to count the stars/ships afterwards. Thanks :)

on 9. May 2023, 01:58 by lerroyy
Very nice puzzle and very smooth solve!

on 18. January 2023, 21:25 by Piatato
Very enjoyable, it fit perfectly into my very long afternoon break. :-)

on 17. January 2023, 23:56 by Myxo
Wonderful puzzle!

on 14. January 2023, 23:39 by filuta
Genuinely fun! Great ruleset.

on 14. January 2023, 16:00 by cmb
Excellent puzzle.
Smooth flow.
Way ahead #1!

on 12. January 2023, 23:27 by MagnusJosefsson
Awesome, really well-balanced combination! Quite smooth and flowy as well despite the difficulty level. Thanks KNT!

on 12. January 2023, 21:51 by Vebby
Wonderfully intricate, a great challenge with a big sense of achievement to solve. Thanks KNT!

on 12. January 2023, 11:44 by Jesper
Fantastic puzzle! Enjoyed it immensely :)

on 12. January 2023, 02:24 by polar
It is such a pleasure to see older (and mostly forgotten?) tags being used again, and of course wonderfully executed as I would expect from you.

The KD is a lovely addition to the ruleset and was a really fun & enjoyable solve. I'd certainly vote for solving another.. Perhaps with a loop next time? ;) Thanks.

on 12. January 2023, 01:24 by Niverio
Star battle scanning is the bane of my existence. The logical path is very satisfying though :)

Last changed on 12. January 2023, 01:10

on 12. January 2023, 01:10 by KNT
This puzzle is quite tricky, but I think if you give it the time and notate it carefully, you will find it one of my more rewarding creations. I don't intend to set any more of these, but if people do solve this and enjoy the puzzle/genre, I am happy to make further substantial variants. Enjoy :)

Difficulty:5
Rating:100 %
Solved:25 times
Observed:5 times
ID:000CL0

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Solution code:

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