What's puzzling is how someone that puts the site below their own personal safety managed to get a diamond! I expect my mods to put their lives on the line and stand (and fall if necessary) in the face of the inevitable PPCG stack uprising.
Tile completely this 47 x 47 square with rectangles. Each rectangle must contain precisely one numbered cell, and that number must be the area or perimeter of the rectangle it finds itself in.
During their holidays Martina, Karl and Jim played badminton every day.
The winner of each match continues to play in the next match against the one who just had a break, while the loser of this match pauses.
At the end of their holidays, it turned out that Martina played 18 matches, and ...
Cannot wrap my head around these 2, please also tell me what the logic is? For the 2nd one I think it might be a water droplet shape? But not sure about the logic. Thank you
A Sudoku's difficulty level is often the first thing readers notice about a puzzle. For questions and answers showing a puzzle it would be nice to have a relatively objective linkable tester.
I've used Thonky.com's Sudoku Difficulty Estimator for this purpose, but according to user21820 it seem...
Unlock the lock with the key.
You might want to put this next to a certain website's url. You know, the website where they post images and stuff? I think it was named after images or something. . .
/a/8QemVeM
Is enough said already?
Complete the link.
https://www.youtube.com/watch?v=hClK7Sn
...
User Abigail comments on the titling of "Do sudoku answers always have a single minimal clue set?"
:
I'd be surprised if there were a Sudoku which doesn't have at least 2 disjoint clue-sets.
Well then, is there a Sudoku answer that has only a single minimal clue set?
The diagram below shows a partially-filled "octagram". Step into it, if you dare!
At every vertex in a long word.
Flowing into every vertex are two short words. Anagrammed together, these two short words yield the long word.
Flowing out of every vertex are two more short words. Anagrammed...
In each cell of a 5 × 5 square there is a token that is black on
one side and white on the other. Initially all tokens are placed
with the white side facing up. On each move three tokens in
consecutive cells in a row or in a column are flipped over. What is
the smallest number of moves...
Here is a short sequence that I made when brainstorming puzzles:
19
101
920
20009
701
104
403
311
3000000000000000004
...
You need to figure the next one out.
Just so you know, this is an actual series that I made, and although the jump to 3,000,000,000,000,000,004 is ridicul...
Oh, by the way, for the example "cross(boundaries)words" puzzles above, the basic rule is that every answer literally crosses the boundary of a standard crossword.
Within the main square every cell is "checked," as in part of both of an Across and Down.
So do I! I've been playing around with more cryptic gimmicks, but a few of my recent puzzles were birthday presents (and it would feel wrong to "profit" off of them, even if that profit is just imaginary internet points).
An architect wants to plan the creation of a house, but he has only two perspectives, one from the left and one from the front.
The house consists of concrete cubes. All concrete cubes must be connected.
How many cubes does the architect need to build the house at most?
Perspectives, the l...
Since it seems at least some people are enjoying these I'm continuing the series.
This one is not quite as elegant, but still interesting.
Can White Castle?
@Randal'Thor , I don't know where you get your energy to spend time everywhere. To almost quote Alice (haven't yet found it, about being in both places at once):
(must have a word wrong, any help?)
It's about not being at two places at once while being nowhere at all.
I make billions,
I never spend less than $1000,
I'm a man in black,
I'm a force of nature,
I'm the original,
Audiences of all ages have seen me.
Who / what am I?
The question was "Can white castle?". For the avoidance of doubt, there's nothing wrong with your answer -- it makes the answer to that question perfectly clear. I just think there's something ever so slightly off about asking that question when it's not actually answerable. I would hope there was either a proof that W can castle or (much more plausibly, of course) a proof that W can't castle. In this case apparently there's neither. — Gareth McCaughan ♦12 mins ago
I feel like this is in a way similar to open-ended questions?
One would respond automatically with a "no"
But you don't know if it's solvable or not, and there always lingers the thought that the position is possible even if someone has deduced that it isn't possible
Am I making sense?
If the question has a solvable solution, well, then the answer is pretty straightforward
But if the answer is "no", there's no positive way to prove that
because then the question has a definite answer. Either there is a sequence leading up to that position, at the end of which W can castle; then the answer is yes -- and you should be able to find such a sequence and post it. Or there isn't, in which case the answer is no, and hopefully you can find a proof less painful than enumerating all possible chess games :-).
So my quibble is really just with the wording of the question and its title.