@ffao really the proof can be done in two lines: the construction as Mike did, and the following line: since each vertex has even degree and the graph is connected and planar, we can find an Euler cycle (circuit?) and use the two-colour theorem to find a subset of triangles that together include every edge once, and therefore 3|2n-3 and 3|n. But that's no fun.
@Deusovi I was just curious about the difference between community wiki answers and regular answers. Also would you add a second answer or use the community wiki answer if you tried to solve the puzzle?
As Anna wakes on her second night in the rainforest, a great sheet of thundering cloud washes clean from the bark:
that which needs no sun or air,
that which cannot fly,
and that which cannot fill its lungs
to sing a stormy line
A friend gave me this and after a week I still don't hav...
@Avigrail CW answers don't grant reputation and are visibly indicated as being a community response, built by multiple people and open to additional additions / corrections by the community at large. I believe they still can give their chief owner (the person responsible for most of the revisions) badges.
And I'm giving up on the other puzzle I was working on. It always ends up being too easy/ends in a contradiction. Does anybody have tips/ideas on making a 3d grid-deduction puzzle?
I think I made it so obvious, though I wanted to be poetic, a bit philosophical yet simple. =)
To whom those words belong ?
By the mouths it is spoken
For I am horrid, a face shedding awe
*grins*
None deals
With a buzz of a fly, to ears.
In the end all that matters
Who remains on top of the st...
So if my friend and I both know something that the other wants, how can we transfer this information without any chance of one of us betraying the other and not telling (for example, exchanging notes and one of us not writing anything). You cannot use a third-party to determine whether the inform...
The number of sides $n$ must be a multiple of 3. As there are $n-3$ diagonals, it suffices to partition them into disjoint triangles.
The diagonals form a planar Eulerian graph whose faces are all triangles. Since there are no degree-1 vertices, it has at least one interior face, which must be a...
@Avigrail "Please note that the great Avigrail has bleedin' demised, ceased to exist. This riddler is no more! They have ceased to be, expired and gone to meet their maker. Bereft of life and rest in peace, kicked the bucket, shuffled off their mortal coil, run down the curtain and joined the bleedin' choir invisible."... what now?
Right. Perfect time. Apparently, there is a term coined to describe the unsightly proliferation of plastic bags in streets. I want to know, what is that term.
Here is a list of problem that I have encountered during an examination , which I fail to answer... Can anybody help me to find the numbers where '??' symbol is put.
$\begin{bmatrix}10&6&2\\15&31&?? \\15&96&7 \end{bmatrix}$
$\begin{bmatrix}??&6&3\\22&27&43 \\27&108&29 \end{bmatrix}$
$\begin{bm...
@Sid I mean, often the "trick" is the entire metapuzzle. It's going to heavily depend on the metapuzzle, but in general, I'd say that the "aha" moment is what makes or breaks a puzzle.
(PS, I've been screen recording last few comments to try an encapture this. Was just successful. Do you guys mind if I convert it to a gif and add it to meta? Just thinking if people see a video instead of a pic they might be able to help.)
If you right-click the grey area, then click Inspect, that info may be useful to the one looking into it. The potential errors that Oded mentioned would be in the console tab of that window.
If you're going to go to that much trouble to create a story and come up with a set of rules, and post it for other people to work through, why the heck wouldn't you make sure it HAS a solution?
@Avigrail yeah its a good thing to do if you are unsure about a puzzle. Gives you a chance to improve based on feedback before posting. I've done it a few times, even recently, and it is helpful
Uh... just enciphered. But there's easy giveaways, like the positioning of the numbers (e.g. If the clue numberings are "k", "j", "4", then you know those map to 1, 2, and 3)
You want to have a clean board or hints inside of the grid? https://glareanverlag.files.wordpress.com/2016/07/glarean-magazin-musikrc3a4tsel-juli-2016.jpg?resize=630%2C494
Right. So the puzzle text would see something like `RH3U `J. I2hasdl bqjasdfkasdf `5. Tgsd "psasdfsdf" and then the solver can deduce out "RH3U = DOWN", "J = 1", and so on.
@Deusovi FWIW I don't think I've ever seen CHOUSE or BLORE either. I wouldn't be surprised if CHOUSE were a variant spelling of CHOOSE (I've certainly seen CHUSE). I've seen Blore as a name but not as a word.
... So it turns out that "chouse" means various things to do with cheating, and also some kind of Turkish official; and "blore" means a gust of wind, or to cry out.
@Deusovi I'd like to mention that there is no more information to find rather than other ways of using what you already have. The "50%" thing might be misleading.
Teenagers Alice and Bob are getting into the back of their family car on a LOOOOOONG road trip. They each brought their own cell phone to pass the time, since Mom and Dad will just be chatting with each other in the front.
Before they leave they each dig for their car-to-phone charging cable. A...
Does anyone know - I had 215 reputation today because of upvotes and an accept (+20 unscored because of the 200 cap from upvotes). Then I got a downvote, so now I have 213. Will one of the unscored upvotes convert into a +2 for the time being?