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12:02 AM
And with my magic square puzzle posted, I'm off to eat dinner :)
 
0
Q: Reactivate a 4x4 Magic Square

Taco タコスWe've already removed the magic from a 3x3 magic square. Recently, one of our 4x4 magic squares was scrambled in an earthquake and I need your help to reactivate it's magic: Objective Your objective is simple, rearrange the square so that it becomes a valid 4x4 magic square once more: How to Pl...

 
Avi
12:58 AM
Here's an example of a puzzle that can be brute forced, but in which it is highly preferable to provide additional logic for your answer
15
A: A special triple of factors

AviThe answer is: Here's the intuition: Finally, here's

Since, you know, just plugging it in to the computer takes out all the fun x.x
not a grid-deduction puzzle, but the same kind of trend generally applies
 
@Avi not to everyone; solving it with a computer is fun for those passionate about development. I that particular case, I see no reason for a computer based answer to any less satisfactory than an answer providing a mathematical explanation. So long as the answer provides an explanation as to how they solved the problem, I think it's acceptable either way.
I completely understand how others wouldn't feel satisfaction with such an answer though.
With that in mind, I still believe that it's the responsibility of the question's author to point out that a computer solution will be considered invalid in cases like that one.
As pointed out in earlier discussions, there are specific tags where computer solutions should be avoided, but I don't think optimization, number theory, and mathematics (in general) tags fall under that umbrella without the no computers tag.
I could be wrong, but that's just my mindset on it
 
1:16 AM
@Avi I think fun being so subjective makes this a reality bad argument
 
I'm not trying to step on anyone's toes either by the way
 
@Tacoタコス I think if I brute forced it, I'd still put the explanation at the start
 
@Tacoタコス Maybe we could look at this from another angle. There is generally a reason that professors and teachers will ask you to "show work" when solving math problems - because anybody can plug math into a computer, and anybody can copy-paste a problem into Wolfram Alpha, but not everybody can write a detailed and logical solve path to explain to other people how they did it. The latter teaching and explanation factor is what is valued on Puzzling SE.
 
@AncientSwordRage I tend to make it a footnote
 
Because we can't really have "definitive answers" on Puzzling SE like other Stack Exchange sites, we substitute that idea by having explanations and solve paths, even in cases where you could just plug it into Wolfram and post the answer in 10 seconds.
 
1:18 AM
My best reasoning would be that we're puzzling.se not ccpgpcp.se (what is that algorithm)
@Tacoタコス same idea I think
 
The factor where puzzle solvers teach others and prove their knowledge is the valuable part, not the computer.
2
 
@Sciborg I understand that, and inferred that from your prior statements. I think what I'm trying to say is that if I write code to solve a problem, and explain what I did, then does that not meet that same requirement? Even if it's not a rigorous mathematical explanation? I simply explained a different way to accomplish the same goal at that point.
@Sciborg likely an extreme example there, but wouldn't something so simple be considered as off-topic here anyways?
 
Because not every puzzle solver knows how to code or read Python or C++ or whatever.
To just post some C++ code and explain it is not helpful to future solvers. That would be more of an Algorithms/SO answer, not a Puzzling answer.
 
@Sciborg even if they did, this is puzzling first and foremost
 
I'm not going to post a bunch of code and say "this code solved your Nurikabe" if I expect future readers to learn how to solve the puzzle from that explanation. They won't be able to learn if they are not proficient in code.
Maybe if you explained it in a detailed enough way, but even then it's in poor taste.
 
1:23 AM
@Sciborg well I'm not saying to simply post a snippet with your answer though; take this answer for one example.
It's not an accepted answer, but instead compliments a mathematical answer with brute force, and explains the thinking behind building it.
I'm trying to find my more recent one
1 sec
This one is a bad example, but is more recent. In that one I didn't explain the code behind it due to lack of time on my part; however, it's now on my to-do list tomorrow to come back and explain what I did to get there.
 
Avi
@Tacoタコス I'm passionate about development but that doesn't make it satisfactory to solve it with a computer for me
 
@Avi do we have a a dedicated tag for computer puzzles by chance?
 
That's what I found too :/
Thanks for linking them :)
So maybe a meta post is in order then
 
Avi
no problem 👍
 
1:31 AM
1 sec :D
Perhaps I should write a meta post to propose a new tag and create a way to make it explicitly acceptable to solve with a computer.
 
Avi
Generally it's more acceptable if the computer is doing a limited amount of grindwork
where that doesn't invalidate the core part of the puzzle
i.e., enumerating all numbers between 1 and 81 could be done with a computer
but reasoning about those numbers
should be done by the human
moreover, it should be the case that a computer program taking the same approach would be (at least mildly) unsuccessful or unperformant without the logical steps given
 
And I want to reiterate that the teaching and knowledge is what is valued on Puzzling, the ability to make an answer future-safe and accessible for readers who want to learn. It shouldn't require a programming degree to understand how someone arrived at an answer on Puzzling. I know as tech-savvy people we tend to take it for granted that everyone understands how we think, but that's not always the case and we have to keep in mind that not everybody "gets" code, or wants to.
 
Avi
ooh, good point
it should be dead clear what your code is doing
 
@Sciborg I think that's the consensus across SE as a whole to be honest; the teaching part lol
Perhaps that's where I disconnected
I think I've always looked at PSE as a place to have fun,
Not so much a place to teach
Flipping that switch changes things a fair bit
 
Teaching others is very highly valued here, I guess that's the point I'm trying to push when I show concern about people making their answers not accessible to everyone (i.e. by making them full of code).
Again, I'm a code person so I totally get how it's easy to forget not everyone thinks like we do. But it's important to have that little self-correcting voice saying "could I expect somebody else to fully understand this given what I've written?"
 
1:40 AM
It took me some settled reflection, but I think I'm on the same page, although likely in the first paragraph still lol
 
I do appreciate the idea of having a tag specifically for "problems you can solve with computers," although I worry that might edge into Code Golf territory.
Their whole thing is sort of "solving problems with computers."
 
@Sciborg I wouldn't recommend allowing it to be that broad.
Personally I'd define it as:
> For use with puzzles that are explicitly allowing a code driven answer, provided that the logic behind the computer solution is provided.
Where the expectation is that the answer itself isn't "here's the answer, this code proves it".
 
Might be something to run by as a Meta post. I guess I'm on the fence about whether that's in-scope, or whether it steps on Code Golf territory, but Deus and other longer-term users can weigh in on that better than me.
 
hah, come back from sleep 11 hours
and there's a bunch of puzzles to work through :)
 
It would be more like "the answer is x, because across n iterations some criteria was met, that couldn't be met unless z, etc."
@Sciborg I think code reliant puzzles are very much off-topic and more code golf territory.
I think allowing a computer solution, explicitly, is more of what I'd be after by asking.
 
1:47 AM
That's fair, I can see what you're going for. I guess you'd have to see if it's something other users cotton on with - tag creation is not usually my rodeo.
 
@Tacoタコス gonna solve the magic square :)
 
@Sciborg mine either lol but I'm not against helping out with it :)
@Stevo good luck :D
I tried to make it a bit harder than the last one
 
stretches arms, cracks knuckles
 
Though more than one solution likely exists :D
Also made it a game, so there's that lol
 
even more ideal to solve it, though i would want to try that sudoku as well
opens excel and puzzlink, starts to multitask
which one should i do first...
 
1:52 AM
So many options :D
 
i was too excited this morning when i saw 936 rep... so close to 1000 now... i stilll remember 2 weeks ago when i talked to bobble about 2000rep, and now im halfway there.
when you open puzzlink to see deusovi has puzzles there
 
Avi
@Stevo solve my candy caper wen
 
@Avi uh... i hope my tiny brain can multitask 3 puzzles... :)
 
Avi
sure - the more puzzles you check out, the higher the chance you have of having something click!
but I uh
have to run, <3
cheers
 
k bye!
 
1:59 AM
Added a wiggle effect to invalid moves :D
 
omg
thats so good
uhhh this sudoku i can solve but i dunno how to display on the actual answer...
 
Trying to add the end game anims now :D
 
when u split 2 sudokus into a split screen
maybe i should solve it in excel, so its easier... hmmmmmmmmmmmmmmmmmmmmm
 
2:18 AM
 
wow...
 
Added the "what number goes here" to the top left of each square
 
yeah
hope i can do the sudoku fast enough that someone doesn't snipe me
 
Figured it was more visually useful than having a reference grid
 
ahh... thats smart
opens snipping tool, gets ready
 
2:36 AM
Might want to lol
It's a doozy :D
I'm out for the night :) best of luck :D
 
the sudoku was answered...
uhhh
@Tacoタコス should i keep on finishing answering but include how i got to it?
2 puzzles left to go
@Tacoタコス does the magic square need to end up on the magic square given?
 
2:52 AM
What do you mean?
 
you gave us a 4 by 4 magic square; do we have to use that one?
or can we use another magic square @Tacoタコス
 
Just has to be a valid magic square 🙃
 
ok
 
If you don’t use the one I provided though, I highly recommend explaining why you wouldn’t.
 
ok.
 
3:02 AM
The puzzle is worded carefully in that regard
 
lets say 4 has 3 moves left, and 8 has 2 moves left. If both swap, 8 now has 1 move left and 4 has 1 move left?
so does it mean the subtraction goes on how many moves a tile has left, not the number on the tile?
 
The move is invalid because 8 doesn’t have enough remaining moves to be reduced by 4 and stay positive
 
uh, im confused (again)
 
I can help 🙃
 
ok
lol
 
3:05 AM
What’s got you confused?
 
so... basically does the subtraction on the higher-lower mean who has most moves left-who has least moves left or highest tile-lowest tile?
 
That sounded confusing IMO
1 sec
 
um...
 
The math is:
high - low
low - 1
If high does not have enough remaining moves to cover the swap and be at zero or higher, it’s invalid
So for example
Let’s say 6 has 3 moves remaining, and 4 has 2.
You want to swap them
However, you cant
Because
6-3 =3
Since 4 > 3, the remaining moves for 6 would become -1
As such the move is invalid
 
but shouldn't 4 be 2 as 4 has 2 moves left?
 
3:11 AM
high - low face value
 
@Tacoタコス high's remaining moves-low face value... ohhh
 
high moves remaining - low face value
Sorry, phone chat lol
 
@Tacoタコス ? oh
 
I’m on mobile lol
 
oh
k
so if 9 has 9 moves remaining 6 has 4 moves remaining 9 has now 3 moves remaining?
(cause im pretty sure on the 3 by 3 magic square the answer would be 5)
i feel like i need an interactive puzzle to find the rules for myself...
 
3:18 AM
@Stevo if you swap 9 with 6 in that scenario, yes, 9 has 3 moves remaining and 6 as does 6.
 
and instinct tells me that the magic square given is not the correct magic square... cause after 2 moves im stuck...
 
@Stevo the answer would be the same on the 3x3; they were built with the same rules.
 
@Tacoタコス right. That means this magic square given im 80% sure that it not the right one... better get finding the correct one out of 880
 
@Stevo there a many possible 4x4 magic squares :)
 
@Tacoタコス thats the problem...
 
3:21 AM
I can’t confirm or deny if the one in the puzzle is possible with the given configuration though, that would be cheating 🙃
 
@Tacoタコス exactly...
 
@Stevo no really because we know how to calculate one.
 
calculate? using a computer?
uhhh i am bad at coding, im now scared
 
@Stevo no, it can be done on paper
 
ok
right...
 
3:23 AM
You have to know the limitations of the current configuration before you can calculate a square though
Otherwise you’re blindly guessing which is much harder
 
@Tacoタコス hmmm
 
It also helps to identify the most efficient way to move pieces around (if you haven’t already).
 
@Tacoタコス the most efficient way... now this puzzle is even more puzzling
 
Once you identify that information, you can create a square by saying numbers x y and a are required to be here here and here
 
oh
i c
thats... hard.
my limitations:
uh
don't want to say in public or people might pick it up and go further
 
3:27 AM
That’s fine lol
 
the only other way is...
1 has only 3 places to go
thats all i know for now.
 
Don’t forget the initial square, it’s 4 total possible places for the 1 to reside.
 
oh
yeah
but then thats it
 
That’s pretty limiting :)
 
for 1 that is, but for the rest its not much help
lets say 1 is in the first column, the rest need to add to 33.
 
3:38 AM
correct
 
and there's
how many ways to do it?
frantic searching
 
Look for other limitations 🙃
Lower numbers are harder to move
 
the 2
start with 2 first
 
But bigger numbers are harder still when side by side
 
yeah
2 doesnt help...
 
3:40 AM
Nope lol
 
well for 15, we can just move 14 though
so larger numbers are kinda more free
still doesn't help
 
Not really because once you swap 14 and 15, 15 only has 1 move left, even though 14 still has 13. That’s a very risky move.
 
yeah
unless 15 is stationed over there...
 
True 🧐
 
i search up the middle numbers in a 4 by 4 magic square and i find math stack and puzzling stack...
 
3:42 AM
Lol
 
but they don't help
cause they different topics
 
I gotta head out for the night unfortunately; work in the morning. 🙃 good luck! 🙋🏻‍♀️💤
 
ok
whats your time now?
 
Avi
can you merge the header cell in a table?
 
to see if i can still talk to you in the morning
 
3:45 AM
1045
 
uh, 9 hour difference (1:45pm)
my laptop opened till about your 4am... uhhhhhhhhhh
 
0
Q: My Pokemon Puzzle

JMSI had no idea how much information to give for this puzzle, so I decided to start with none! I'll add hints if enough time passes / people are looking for direction.

 
Avi
oh god
i'm posting uh
all the names
in a community post
 
?
 
Avi
the next step is probably to get their uh
 
3:48 AM
the answer
to the candy one?
 
Avi
national dex numbers
no, the pokemon question that just went into chat
 
ok
 
Avi
currently done with first row
 
im kinda done with the magic square... its too hard for me
so avi could you prod me in the right direction for the candy one?
@Avi
 
Avi
uh
one of my recent puzzles
 
3:55 AM
?
 
Avi
hint hint
 
yes
hint
please
@Avi was 'one of my recent puzzles' a hint?
@Avi sorry for ping
and now hes gone...
nice answer avi!
 
Avi
4:15 AM
Hi
i can't catch em all
 
i guess thats a partial answer
 
Avi
but at least i can name them
xD
 
lol
um pointer for candy conundrum?
(my guesses: 3 and 5 related, 2 and 6 relateed)
 
Avi
everything is related, you just have to find the right ordering and apply them step by step
everything is related somehow*
not every clue to every other clue
 
ok
hmmm
 
Avi
4:21 AM
was intending to make it community wiki
not sure why it wasn't
x.x
 
lol
um
im still confused...
scratching head
i think i will first try solve the 4 by 4 magic, before this, as it seems like no one has the intent of solving it other than me...
 
4:48 AM
i need some rest. im thinking too hard... brain going overtime... i can't answer any puzzles at all...
 
 
1 hour later…
6:01 AM
Can any mod undelete this answer? I believe the "ongoing competition" has ended long ago (Mar 15, 2021 according to linked meta post on Math).
 
@Avi i give up on the magic square, and i am now actively thinking about your candy conundrum. However, the pointer you gave me is a bit obvious... don't you think?
 
Avi
uh
mayyyyybe
i have lots of recent puzzles
behold!!
 
Does it have something to do with imgur?
@Bubbler It seems to be already answered on Math as well
 
6:37 AM
@Avi Candy Conundrum. The one about cipher and slitherlink? and candy walls and squaring evidence.
 
@Anonymus25 I'm aware of that, but I believe mine is more thorough than anyone else's, and this answer is kinda incomplete without the 5x5 solution
 
Avi
6:55 AM
@Stevo what about
 
a hint
 
Avi
I've probably given enough hints for now
 
you have?
 
Avi
maybe
 
ok lol
 
Avi
6:57 AM
but once you find an entry point you should be able to go like 1-2 layers deeper very quickly
 
bbut i cant find that entry point
 
Avi
think on it
i'll give it a week or so
 
hmmm
2 images
3 and 5 im guessing, or 1 and 3
think thats the entry point
 
 
1 hour later…
8:01 AM
im not sure now...
 
@Avi I believe I've found your entry point, but goodness me you've put together some tricky logic! Very enjoyable so far... :)
 
uh. Thought someone would beat me... and here comes the proceeder :)
um wonder what the entry point is...
 
Avi
8:27 AM
@Stiv :D
one of my most difficult puzzle settings
 
I'm getting a bit stuck again at a later point but I've uncovered quite a lot - I'll post a considerable partial
 
Avi
no need, I think
 
No need for...?
 
Avi
posting a partial at this point?
maybe you'll think of another connection tomorrow :O
 
Maybe, but if I've uncovered paths that others couldn't, perhaps they can uncover paths that stump me in return...
 
Avi
8:30 AM
sure!
didn't think of it from that angle :)
 
It's a complex puzzle, for sure!
 
Avi
make sure to post all the steps :P
 
(Oh you bet I will!)
 
Avi
worst case you can just list out the unused clues
and see if any apply
maybe Stevo will finish it off after the partial - you never know :O
 
thats what i was hoping :D
maybe i need help getting started, but can get it finished
 
Avi
8:34 AM
a very uh, important detail I would like to note
for the very first step
to noting which image is used with which elements
 
I got the clues, don't worry :)
 
Avi
is that the cotton candy is the exact same shade of yellow as some of the numbers
 
elements?
 
Exactly
 
Avi
:D
 
8:35 AM
oh
i have no idea
so stiv please post that partial i wanna see
 
Avi
when they're done with it, I suppose
 
Working on it, fear not :)
 
*information is my stock in trade*

- Rangers Apprentice

*Puzzling is my stock in trade*

- Stevo
 
Avi
sleeplessness is my stock in trade - Avi, at 3 a.m.
 
uh i forgot how to use markdown
nvm
hunger is my stock in trade - Stevo, 7pm with no dinner
following 4 by 4 magic square and candy conundrum :)
and after dinner= laptop closing time... so... i think i should get showering first
bye! (for 25mins)
good luck Stiv!
when you are so excited that you refresh the sudoku page that you were doing accidentally instead of the puzzle. You get frustrated and refresh the nurikabe. Then you get angry
 
Avi
8:42 AM
then you solve it 3 times faster along a different solve route
 
8:56 AM
lol
Stiv you posted it?
waiting patiently
 
Yup!
 
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