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Here is the puzzle:
> Alice and Bob leave in a world where all diamonds are divided into 2 types: Light and Heavy. All diamonds look exactly the same. All light diamonds weight exactly the same, all heavy also weight exactly the same but a bit more than the light (by an unknown, infinitely small amount more).
Now... |
Suppose we have 4 by 4 grid with numbers 1, 2, .., 16. Can we fill the grid so that the product of the first row is equal to the product of the first column, the product of the second row is equal to the product of the second column, ..., etc?
I have already gotten answer here for n=5:
[https://puzzling.stackexch... |
The puzzle is as follows:
> The figure from below represents a peculiar structure which consists in congruent triangles whose sides intersect and is made of an iron wire. How many cuts passing through all the dots showcased can be made at minimum to get the whole structure unassembled? Assume that a cut through any ... |
Can anyone please tell me what this is? |
There are 6 boxes, each containing a distinct number. You can select 3 boxes and the Oracle will tell you which box has the smallest number and which has the largest number of the three selected boxes. Can you use 6 steps (selections) to work out the exact order of numbers in each box, from smallest to highest? Can you... |
The enlightened but, sadly, fictional country of Switzerland has it all: A strong democracy that rejects centralism, a reliable public transport network and its own version of chess.
Swiss chess reflects the values of the Swiss and does not tolerate the obsession with the centre that has so discredited traditional c... |
The enlightened but, sadly, fictional country of Switzerland has it all: A strong democracy that rejects centralism, a reliable public transport network and its own version of chess.
Swiss chess reflects the values of the Swiss and does not tolerate the obsession with the centre that has so discredited traditional c... |
<sup>An entry in [Fortnightly Topic Challenge #50: Escape Rooms](https://puzzling.meta.stackexchange.com/questions/7172/)</sup>
---
I hesitated to enter this in the Escape Room FTC, but I definitely was inspired by the challenge to create this puzzle, and it is, in some sense, an escape room. This puzzle is defin... |
The enlightened but, sadly, fictional country of Switzerland has it all: A strong democracy that resists centralism, a reliable public transport network and its own version of chess.
Swiss chess reflects the values of the Swiss and does not tolerate the obsession with the centre that has so discredited traditional c... |
Earlier, I introduced the beautiful game of [Swiss chess](https://puzzling.stackexchange.com/q/107642/71595).
Unlike the peace-loving Swiss, we are interested in "domination", the art of threatening or occupying every square of the board using a given set of pieces, four Swiss queens for this puzzle.
But how to p... |
The enlightened but, sadly, fictional country of Switzerland has it all: A strong democracy that resists centralism, a reliable public transport network and its own version of chess.
Swiss chess reflects the values of the Swiss and does not tolerate the obsession with the centre that has so discredited traditional c... |
Earlier, I introduced the beautiful game of [Swiss chess](https://puzzling.stackexchange.com/q/107642/71595).
Unlike the peace-loving Swiss, we are interested in "domination", the art of threatening or occupying every square of the board using a given set of pieces, four Swiss queens for this puzzle.
But how to p... |
Earlier, I introduced the beautiful game of [Swiss chess](https://puzzling.stackexchange.com/q/107642/71595).
Unlike the peace-loving Swiss, we are interested in "domination", the art of threatening or occupying every square of the board using a given set of pieces, four Swiss queens for this puzzle.
But how to p... |
<sup>This puzzle follows from the [Purple Periodic Puzzle](https://puzzling.stackexchange.com/questions/107514/the-purple-periodic-puzzle) and [Green Periodic Puzzle](https://puzzling.stackexchange.com/questions/107531/the-green-periodic-puzzle) (these puzzles are solved independently).</sup>
Yet another periodic ta... |
I was solving a crossword in my local newspaper when I came across a clue that made no sense:
> 19 Across: Be inappropriate
On the face of it, there is nothing odd with this clue until I realised: 19 Across didn't exist!
The only other puzzle on the page which could explain this printing error was a Find-A-Wor... |
Earlier, I introduced the beautiful game of [Swiss chess](https://puzzling.stackexchange.com/q/107642/71595).
[![enter image description here][1]][1]
[![enter image description here][2]][2]
[![enter image description here][3]][3]
[![enter image description here][4]][4]
_These are animated gifs. You may have ... |
Earlier, I introduced the beautiful game of [Swiss chess](https://puzzling.stackexchange.com/q/107642/71595).
[![enter image description here][1]][1]
[![enter image description here][2]][2]
[![enter image description here][3]][3]
[![enter image description here][4]][4]
_These are animated gifs. You may have ... |
The enlightened but, sadly, fictional country of Switzerland has it all: A strong democracy that resists centralism, a reliable public transport network and its own version of chess.
Swiss chess reflects the values of the Swiss and does not tolerate the obsession with the centre that has so discredited traditional c... |
There are 2 rows of numbers shown below. Which number belongs to the blank box with a question mark? Please choose from the three options stated.
Why were these particular numbers chosen?
[![enter image description here][1]][1]
[1]: https://i.stack.imgur.com/t6fZW.jpg |
There are three groups of girls.
- The first group *(three girls)* has naturally straight hair.
- The second group *(four girls)* used a curler, some missed a few strands that remains straight.
- The third group *(three girls)* has naturally curly hair.
You look at them regularly. What do the three group... |
What do the three groups of girls represent? |
Not much was at stake on John's last visit to the oracle. But his grandfather had told him, in his dying moments, the location of a unimaginable treasure. Forgetful as usual, John messed up again. Although not fully prepared, he visits the oracle once more, only to take heat from the oracle in the form of these riddles... |
There are 2 rows of numbers shown below. Which number belongs to the blank box with a question mark? Please choose from the three options stated.
Why were these particular numbers chosen?
[. Hope you enjoyed our [Double Supreme](https://puzzling.stackexchange.com/q/94698/18418) variants.</sup>*
We at Vowelburgers™ are finding more and more ways to bring variety to the table. The chef’s choice of the day cons... |
## The completed grid:
>! [![enter image description here][1]][1]
## Step-by-step solution:
We start by looking at the
>! middle box of the puzzle. The center of this box (R5C5) needs to be odd by the escape room condition (actually also without this condition this would need to be the case, but the argument ... |
<pre>
<img src="https://i.stack.imgur.com/Pg3mGb.png" title="inspect the body">
</pre>
<img src="https://www.google.com/search?q=qr+xor+mask&tbm=isch" title="stuck?">
Everything you need is above..
[1]: https://i.stack.imgur.com/Pg3mG.png |
<pre>
<img src="https://i.stack.imgur.com/fmry8b.png" title="inspect the body">
</pre>
<img src="https://www.google.com/search?q=qr+xor+mask&tbm=isch" title="stuck?">
Everything you need is above.. |
I have been given this puzzle by my friend (who is a qualified military cryptographer). I am completely stuck as for what to do.
They gave me this hint:
"Don't take it so literal, think in all three dimensions."
What if it isn't a grid we are looking at - what if it's a cube?
Another hint:
"The puz... |
Grid of numbers and dashes, X-Akseli and Y-Ehe? |
<pre>
<img src="https://i.stack.imgur.com/YP7Jtb.png" title="inspect the body">
</pre>
<img src="https://www.google.com/search?q=qr+xor+mask&tbm=isch" title="stuck?">
Everything you need is above.. |
<sub>*In the spirit of the What is a [Word™](https://puzzling.stackexchange.com/search?q=%22I+call+it%22+title%3A%22what+is%22+title%3Aword+is%3Aquestion)/[Phrase™](https://puzzling.stackexchange.com/search?q=%22I+call+it%22+title%3A%22what+is%22+title%3Aphrase+is%3Aquestion) series started by [JLee](https://puzzling.s... |
Could the hidden solution be
>! Lust?
Explanation:
>! I found this solution by simply counting 19 rows: 11 down, and then starting again from the top, another 8. When you go across on the 8th row, you get the word lust.
Definition:
>! Lust is defined as: usually intense or unbridled sexual desire. This definit... |
Could the hidden solution be
>! Lust?
Explanation:
>! I found this solution by simply counting 19 rows: 11 down, and then starting again from the top, another 8. When you go across on the 8th row, you get the word lust.
Definition:
>! Lust is defined as: usually intense or unbridled sexual desire.
Source: ... |
The plaintext is
>! stop mask half excuses to wear undestand a half real is rare take it off don t be careless put it on it is a lie what to be skeptical but a dye clear perceptible removed preserve once a soul cry home
Explanation:
>! Only take the cells of the 13x13 grid if `(xy % 2 + xy % 3) % 2 == 0`, whe... |
The plaintext is
>! Stop Mask ... half excuses to wear undestand a half ... . Real is rare. Take it off. Don't be careless put it on. It is a lie. What to be skeptical? But a dye. Clear perceptible. Removed. Preserve. Once. A soul. Cry. Home.
Explanation:
>! Only take the cells of the 13x13 grid if `(xy % 2 +... |
The answer is in fact simple:
>! Nmax=15, and the procedure in question is in fact optimal
Why? First, let's introduce some abbreviations for the sake of simplicity:
>! KL and KH for "known-light" and "known-heavy", i.e. diamonds which already have their weight proven by us. Similarly, PL and PH for "presumed-ligh... |
I believe this is the solution? (If it is, I'll include my logical process in a bit)
>! [![ic_nkb_sol][1]][1]
[1]: https://i.stack.imgur.com/1Ew2q.png |
Let's say you fill in a 6 by 6 square with the numbers 1, 2, ..., 36. Is there a way to fill it so that the product of the first row is equal to the product of the first column, the product of the second row is equal to the product of the second column, ..., etc?
So far I had already ask the n=4 and n=5 here.
h... |
Let's have the following number $(3i-\frac{5}{3})^3$. What is the trick to factorizing this number in more than one way? |
Let's say you fill in a 6 by 6 square with the numbers 1, 2, ..., 36. Is there a way to fill it so that the product of the first row is equal to the product of the first column, the product of the second row is equal to the product of the second column, ..., etc?
So far I had already ask the n=4 and n=5 here.
h... |
We are arranging the numbers from 1 to 8 in an order so that three consecutive terms cannot be increasing. For example, 12345678 isn’t allowed but 81436572 is. How many ways are there to do it? Please don’t use computers. |
<sup>An entry in [Fortnightly Topic Challenge #50: Escape Rooms](https://puzzling.meta.stackexchange.com/questions/7172/)</sup>
<sup>Without revealing too much, knowledge of geek culture and/or superb Google skills are required for this puzzle.</sup>
---
Coming from an anime convention and looking for someth... |
You can try this with pencil and paper, or make it a physical puzzle you can try out with your kids if you have one of those large 6x3 egg cartons laying around.
Imagine you have 3 rows of 6 spots. Fill the first row with 6 red colored eggs, the second with 6 green colored eggs, and the last with 6 blue colored eggs... |
Swapping eggs puzzle (parity?) |
You can try this with pencil and paper, or make it a physical puzzle you can try out with your kids if you have one of those large 3x6 egg cartons laying around.
Imagine you have 3 rows of 6 spots. Fill the first row with 6 red colored eggs, the second with 6 green colored eggs, and the last with 6 blue colored eggs... |
This is an image of a Rubik's Cube I found in the Men's Toilets during the first day of a big Scrabble tournament.
This position is impossible for the standard Rubik's Cube (White/Red/Blue opposite Yellow/Orange/Green respectively) for any number of reasons.
**Is this position legal for at least one non-standard ... |
I was solving a crossword in my local newspaper when I came across a clue that made no sense:
> 19 Across: Be inappropriate
On the face of it, there is nothing odd with this clue until I realised: 19 Across didn't exist!
The only other puzzle on the page which could explain this printing error was a Find-A-Wor... |
This question is a continuation of [this one](https://puzzling.stackexchange.com/questions/107615/the-thiefs-341-name), and you might want to read it if you haven't already.
'Another code-name,' I think. 'There's no way that's his real name'. Nonetheless, I type in 'ANONYMOUS' and the other monitors immediately blan... |
This question is a continuation of [this one](https://puzzling.stackexchange.com/questions/107615/the-thiefs-341-name), and you might want to read it if you haven't already.
'Another code-name,' I think. 'There's no way that's his real name'. Nonetheless, I type in 'ANONYMOUS' and the other monitors immediately blan... |
<sup>An entry in [Fortnightly Topic Challenge #50: Escape Rooms](https://puzzling.meta.stackexchange.com/questions/7172/)</sup>
---
Your head is throbbing like mad. You try to get your bearings as you look around the laboratory. Shattered beakers and spilled chemicals are everywhere. Another failed experiment. Ho... |
Does the Rubik's Cube in this painting have a solved state? |
A group of pirates have plundered one of his majesty's cargo ships and they all carried as much gold coins as each one could find. When they get back to their ship, they sit at a round table and pass their gold around to the person to their left or right until each person has an equal number of gold coins.
Suppos... |
Dirac notation is very expressive: now only does it allow to write quantum states and operations more concisely, it can be used to shorten written English words and phrases! Here are some examples:
[![Dirac notation puzzle][1]][1]
What is shown on the hidden photo?
[1]: https://i.stack.imgur.com/LDNy1.jpg |
<sub>*This is in the spirit of the What is a [Word™](https://puzzling.stackexchange.com/search?q=%22I+call+it%22+title%3A%22what+is%22+title%3Aword+is%3Aquestion)/[Phrase™](https://puzzling.stackexchange.com/search?q=%22I+call+it%22+title%3A%22what+is%22+title%3Aphrase+is%3Aquestion) series started by [JLee](https://pu... |
So I had an idea for a number-based door puzzle for a TTRPG campaign that could readjust itself every time a wrong guess is made. Here's the basic premise:
**Given two numbers, find two more numbers in such a way that:**
- no number differs from any other number in the same way,
- and none of these differences... |
<sub>*This is in the spirit of the What is a [Word™](https://puzzling.stackexchange.com/search?q=%22I+call+it%22+title%3A%22what+is%22+title%3Aword+is%3Aquestion)/[Phrase™](https://puzzling.stackexchange.com/search?q=%22I+call+it%22+title%3A%22what+is%22+title%3Aphrase+is%3Aquestion) series started by [JLee](https://pu... |
So I had an idea for a number-based door puzzle for a TTRPG campaign that could readjust itself every time a wrong guess is made. Here's the basic premise:
**Given two numbers, find two more numbers in such a way that:**
- no number differs from any other number in the same way,
- and none of these differences... |
So I had an idea for a number-based door puzzle for a TTRPG campaign that could readjust itself every time a wrong guess is made. Here's the basic premise:
**Given two numbers, find two more numbers in such a way that:**
- no number differs from any other number in the same way,
- and none of these differences... |
<sup>This puzzle follows from the [Purple Periodic Puzzle](https://puzzling.stackexchange.com/questions/107514/the-purple-periodic-puzzle) and [Green Periodic Puzzle](https://puzzling.stackexchange.com/questions/107531/the-green-periodic-puzzle) (these puzzles are solved independently).</sup>
Yet another periodic ta... |
So I had an idea for a number-based door puzzle for a TTRPG campaign that could readjust itself every time a wrong guess is made. Here's the basic premise:
**Given two numbers, find two more numbers in such a way that:**
- no number differs from any other number in the same way,
- and none of these differences... |
So I had an idea for a number-based door puzzle for a TTRPG campaign that could readjust itself every time a wrong guess is made. Here's the basic premise:
**Given two numbers, find two more numbers in such a way that:**
- no number differs from any other number in the same way,
- and none of these differences... |
Dirac notation is very expressive: not only does it allow to write quantum states and operations more concisely, it can also be used to shorten written English words and phrases! Here are some examples:
[![Dirac notation puzzle][1]][1]
What is shown on the hidden photo?
[1]: https://i.stack.imgur.com/LDNy1.j... |
So I had an idea for a number-based door puzzle for a TTRPG campaign that could readjust itself every time a wrong guess is made. Here's the basic premise:
**Given two numbers, find two more numbers in such a way that:**
- no number differs from any other number in the same way,
- and none of these differences... |
In multiplayer Tetris, there are a number of opening setups that let you send powerful attacks very quickly. One popular opening is the **DT Cannon**, which allows the player to very quickly send a T-Spin Double followed by a T-Spin Triple.
The standard DT Cannon setup looks like this:
[![DT Cannon Setup][1]][1]
... |
<sup>Someone told me that I should put a link to [Fortnightly Topic Challenge #50: Escape Rooms](https://puzzling.meta.stackexchange.com/questions/7172/)... whatever that is, I guess. </sup>
---
PSE, I need your help. I just got back from the worst escape room experience I've ever had in my life. Not only was t... |
This escape room sucked! Did I do something wrong? |
<sup>Someone told me that I should put a link to [Fortnightly Topic Challenge #50: Escape Rooms](https://puzzling.meta.stackexchange.com/questions/7172/)... whatever that is, I guess. </sup>
---
PSE, I need your help. I just got back from the worst escape room experience I've ever had in my life. Not only was t... |
<sup>Someone told me that I should put a link to [Fortnightly Topic Challenge #50: Escape Rooms](https://puzzling.meta.stackexchange.com/questions/7172/)... whatever that is, I guess. </sup>
---
PSE, I need your help. I just got back from the worst escape room experience I've ever had in my life. Not only was t... |
<sup>Someone told me that I should put a link to [Fortnightly Topic Challenge #50: Escape Rooms](https://puzzling.meta.stackexchange.com/questions/7172/)... whatever that is, I guess. </sup>
---
PSE, I need your help. I just got back from the worst escape room experience I've ever had in my life. Not only was t... |
<sup>Someone told me that I should put a link to [Fortnightly Topic Challenge #50: Escape Rooms](https://puzzling.meta.stackexchange.com/questions/7172/)... whatever that is, sure. </sup>
---
PSE, I need your help. I just got back from the worst escape room experience I've ever had in my life. Not only was the ... |
This escape room was terrible! Did I do something wrong? |
This is the third question of my mini series on decentralised chess, or [Swiss chess](https://puzzling.stackexchange.com/q/107642/71595).
In Swiss chess, the advantage in terms of mobility of a centrally placed piece over a piece in the corner is compensated for simply by opening up additional squares a marginalised... |
This is the third question of my mini series on decentralised chess, or [Swiss chess](https://puzzling.stackexchange.com/q/107642/71595).
In Swiss chess, the advantage in terms of mobility of a centrally placed piece over a piece in the corner is compensated for simply by opening up additional squares a marginalised... |
I'm new here, and I might be wrong, but...
>!We can see the centers of three adjacent sides, and we can see a corner where three other adjacent sides meet, which happen to be the three we can't see directly. If we turned the cube around, we'd see red, white, and yellow in the same configuration.
>!So we can ident... |
This is the fourth entry in my decentralised or "Swiss" chess mini series. See bottom for a recap of the modified rules of Swiss chess.
[Enough](https://puzzling.stackexchange.com/q/107642/71595) [warm](https://puzzling.stackexchange.com/q/107647/71595) [up](https://puzzling.stackexchange.com/q/107700/71595)! It is ... |
This is the third question of my mini series on decentralised chess, or [Swiss chess](https://puzzling.stackexchange.com/q/107642/71595).
In Swiss chess, the advantage in terms of mobility of a centrally placed piece over a piece in the corner is compensated for simply by opening up additional squares a marginalised... |
<sub>*This is in the spirit of the What is a [Word™](https://puzzling.stackexchange.com/search?q=%22I+call+it%22+title%3A%22what+is%22+title%3Aword+is%3Aquestion)/[Phrase™](https://puzzling.stackexchange.com/search?q=%22I+call+it%22+title%3A%22what+is%22+title%3Aphrase+is%3Aquestion) series started by [JLee](https://pu... |
<sup>Someone told me that I should put a link to [Fortnightly Topic Challenge #50: Escape Rooms](https://puzzling.meta.stackexchange.com/questions/7172/) for some reason... </sup>
---
PSE, I need your help. I just got back from one of the worst escape room experience I've ever had in my life. Not only was the s... |
<sup>Someone told me that I should put a link to [Fortnightly Topic Challenge #50: Escape Rooms](https://puzzling.meta.stackexchange.com/questions/7172/)... whatever that is, sure. </sup>
---
PSE, I need your help. I just got back from the worst escape room experience I've ever had in my life. Not only was the ... |
What is the next term in the sequence?
1, 1, 2, 3, 5, 8, 18, 34, 60, 120, 214, 394, 788
hints:
#1
>! "mapping" is a valid hint, but would probably confuse more than help |
What is a Chameleon word™? |
I start with a grid of black and white cells. I randomly populate the white cells from numbers (1-9) using Kakuro rules. Then I calculate the horizontal and vertical sums. I remove the numbers from the white cells and try to solve it using Kakuro rules from sums. But I get multiple solutions. How can I generate Kakuro ... |
*<sup>Inspired by [Avi's Vowelburger™ Riddle](https://puzzling.stackexchange.com/q/92931/18418)</sup>*
The success of our [first Chef’s Special](https://puzzling.stackexchange.com/q/94962/18418) has inspired our chef to add even more variety to your favourite Vowelburgers™ menu. The chef’s choice of the day consists... |
I was solving a crossword in my local newspaper when I came across a clue that made no sense:
> 19 Across: Be inappropriate
On the face of it, there is nothing odd with this clue until I realised: 19 Across didn't exist!
The only other puzzle on the page which could explain this printing error was a Find-A-Wor... |
<sup>This puzzle follows from the [Purple Periodic Puzzle](https://puzzling.stackexchange.com/questions/107514/the-purple-periodic-puzzle) and [Green Periodic Puzzle](https://puzzling.stackexchange.com/questions/107531/the-green-periodic-puzzle) (these puzzles are solved independently).</sup>
Yet another periodic ta... |
I was solving a crossword in my local newspaper when I came across a clue that made no sense:
> 19 Across: Be inappropriate
On the face of it, there is nothing odd with this clue until I realised: 19 Across didn't exist!
The only other puzzle on the page which could explain this printing error was a Find-A-Wor... |
What are the numbers in the question marks?
0, 1, 2, ?, 5, 6, 8, ?, 40, 46, 60, ?, 84
|
Here is the puzzle:
> Alice and Bob leave in a world where all diamonds are divided into 2 types: Light and Heavy. All diamonds look exactly the same. All light diamonds weight exactly the same, all heavy also weight exactly the same but a bit more than the light (by an unknown, infinitely small amount more).
Now... |
> *A tale is being told here, one that spans many years and generations... but what kind of tale might it be?*
[![new_adventure_clues][1]][1]
<i> [Pastebin link to a transcript of the clues][2], including colorblind assistance. Note that Y = Yellow, B = Black/Gray, R = Red, W = White </i>
<br>
[![new_advent... |
> *A tale is being told here, one that spans many years and generations... but what kind of tale might it be?*
[![new_adventure_clues][1]][1]
<i> [Pastebin link to a transcript of the clues][2], including colorblind assistance. Note that Y = Yellow, B = Black/Gray, R = Red, W = White </i>
<br>
[ industry is frankly... |
The Decipher jigsaw was a relatively famous puzzle released in the early 80s, promising a $100,000 dollar prize to those that could solve it. After two years with no winners, the creator, Warren Holland Jr., released more and more hints until ultimately it was solved in 1985. You can read more about it in [this paper](... |
Were the Decipher II and Decipher III puzzles solved, and if so when and by whom? |
It could also be:
>!oceanography
My prefix has a lot of wild animals:
>! the ocean (mostly fish)
My infix has heavy demand:
>! Graphs have heavy demand in many different fields of study
My suffix questions itself:
>! Y? as in Why?
My whole has a word in the meaning that means a classification of somethi... |
What is the maximum number of black and white pieces which are relevant or involved in a checkmate position? That is if any piece was removed from the board, the checkmate on last move would not be possible because that piece is relevant or has a role in such Checkmate position because : 1) it is checking the king 2) i... |
What is the maximum number of black and white pieces which are relevant or involved in a checkmate position? That is if any piece was removed from the board, the checkmate on last move would not be possible because that piece is relevant or has a role in such Checkmate position because it may be: 1) checking the king 2... |
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