# Connect Wall - Grid Puzzles Edition!

This is an entry for Fortnightly Topic Challenge #42: Wordless Connecting Walls.

Huge thanks to bobble and Deusovi for playtesting! ><
And hey, this one may also mark my 100-day puzzle here in PSE, aye-aye the golden Socratic badge! XD

The $$16$$ grid puzzles above should be divided into $$4$$ categories of $$4$$, based on some shared properties.
For the final answer, please find one or two grid puzzles that satisfy all $$4$$ categories!

• Socratic badge incoming! Congratulations :) – Stiv Nov 3 '20 at 11:47
• (never mind my comment. I'm blind ;_;) – oAlt Nov 3 '20 at 11:53

The puzzle types are:

Yajilin, Sashigane, Star battle, Kakuro
Tapa, Pencils, Numberlink, Tents
Hitori, ABC view, Slitherlink, Battleships
Aisuban, Masyu, Herugolf, Snake

The solved grids:

(Note that the ABC view and the Kakuro have not been solved completely yet, since their solution is not unique)

The categories:

Already solved puzzles: Numberlink, Battleships, Masyu, Herugolf
Puzzles with 2 solutions: Yajilin, Kakuro, ABC view, Aisuban
Puzzles on a 6 by 6 grid: Tapa, Pencils, Tents, Hitori
Puzzle types starting with S: Sashigane, Star battle, Slitherlink, Snake

An underspecified 6 by 6 sudoku, which already has been solved! (the black digits are the original puzzle, the blue digits are filled in during the solving)

• Nice going :) I was working towards a very similar conclusion but didn't know the second puzzle on the top row or the one bottom left - clearly two I now need to check out! One note: Your Tapa has a 2x2 square in it which means the solution needs a fix...! – Stiv Nov 3 '20 at 20:24
• @Stiv You are correct about the Tapa, fixed it now, thanks! I also didn't recognize all the puzzles immediately, I have searched through a couple of lists of puzzle types to get all the names (in particular I did not know the second puzzle from row 2 and also the bottom left puzzle). – Reinier Nov 3 '20 at 20:33
• Yup, the answer is correct, very well done! :D – athin Nov 4 '20 at 3:03
• @athin Whoops, I guess I wasn't paying enough attention when making that puzzle. It should be fixed now! – Reinier Nov 4 '20 at 7:50
• @Kruga see for example: nikoli.co.jp/en/puzzles/pencils.html – Reinier Nov 4 '20 at 10:04