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286 questions with no upvoted or accepted answers
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10k views

The Beale Papers

The background to this one's given here. NB: These may not be a genuine cryptograms (current thinking is that these are gibberish); but I though it interesting to share these in case they're genuine / ...
26
votes
0answers
2k views

Deus Ex crypto puzzle

There is an encrypted email in the recent Deus Ex: Mankind Divided game: From the game files, this appears to be the string: ...
22
votes
0answers
888 views

The First Gate: Why So Tense?

Greetings fellow puzzlers and puzzled alike! I’ve concocted a little puzzle for you all... Well little may be an understatement, but I'll come back to that. Before starting, you should know that the ...
21
votes
0answers
601 views

What is a Fascia Word™?

In the spirit of the What is a Word™/Phrase™ series started by JLee, a special brand of Phrase™ and Word™ puzzles. If a word conforms to a special rule, I call it a Fascia Word™. Use the examples ...
21
votes
0answers
2k views

Is there a move-efficient way to rotate the center pieces on the Octo-Star?

I'm looking for a more efficient algorithm to rotate the center column of the Octo-Star puzzle 45 degrees. The situation below occurs when four properly-oriented edges are next to each other, ...
20
votes
0answers
1k views

Decrypting the Key

So I've been trying to solve this Riddle called "Phage is Spreading.." ...
18
votes
1answer
868 views

Secret message in a birthday email

A coworker sent this message around on his birthday. Apparently it has a secret message. Here is the exact email body: Good morning FakeCorp, I am turning 25 today so I'm offering loads of tasty ...
16
votes
0answers
171 views

Stupendous Sponge

General Notes This puzzle takes the form a 9×9×9 level-one Menger sponge whose surface is divided into 648 1×1 cells. The aim is to draw a single non-crossing loop along its surface by connecting the ...
15
votes
0answers
656 views

Alternate, complex potions puzzle from HP fanfic

A long narrow room. The entrance is blocked by purple flame, the path onward blocked by black flame. On a table, the only thing in the room, are two dozen potions in opaque bottles. Half green glass, ...
14
votes
0answers
563 views

Excavation Study

Layer by layer, we continue our journey to the center. Excavation area (in order) Excavation plans Expect plenty of overlap! Answer is a thematic phrase. Text transcript of the excavation area (for ...
13
votes
0answers
460 views

Unused By Only Three

First, beg for the most positive among the stables. Now you can do the second, beg for the independent. Now you can do the third, beg for the overlappable. Now you can do the fourth, beg for the ...
13
votes
0answers
217 views

McGraw said in grinning eerie manner

...
13
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0answers
519 views

Rethinking this series on the syllabus

I assigned each person in my class the task of creating a number-sequence, however, 4 of the guys I usually consider to be leaders came back with baffling results. Can you make sense of their work and ...
12
votes
0answers
462 views

Qubes: Oh, For the Love Of

TL;DR: This is a mixture between a tribute/spin-off puzzle and an attempt at a new puzzle type, greatly inspired by the notorious arcade game, Q*bert, published originally by Gottlieb Amusement Games. ...
12
votes
0answers
415 views

Found the key, but what to unlock?

Here's a series of text messages between me and my friend. Me: Couldn't use ebg13, so used ______ to hide my messages. Him: What? How is this possible??? Me: A big prime ______, what else did you ...
12
votes
0answers
408 views

You are the admissions counselor at a school for magic

You are the admissions counselor at a school for magic. You are tasked with the job of sorting incoming students into one of various study-tracks provided at this prestigious institution. The way the ...
12
votes
0answers
272 views

Professor Annity’s invention

The following morning, I found my mentor, Professor Annity, busily cleaning up after what looked like a series of curious experiments. As I entered the lab, she fixed me with a familiar sort of ...
12
votes
0answers
369 views

Determining the meaning of a challenge coin

I saw this rather cool looking challenge coin the other day, and I was wondering what the associated binary on the back of it means, as it isn't standard ASCII. I'd appreciate it if you all have any ...
12
votes
1answer
808 views

Weird and complex puzzle that we need help with

So basically this is a complex deep web puzzle and we're pretty much stuck at it right now as we don't have any idea what this is about, any help will be aprreciated (the attached images are the ...
12
votes
0answers
1k views

REALLY important days in history

@Z. Dailey asks a mathematical puzzle Important days in history... and to come! with a series of dates in years 1973, 1978, 1983, 1992, 2005. My puzzle asks the question: What is the previous date in ...
12
votes
0answers
1k views

How would this binary-ish code be translated?

...
11
votes
2answers
313 views

Relations among words

The set of sixteen terms below can be partitioned. Each partition is of four terms that have something in common. I invite you to figure out the partitions and commonalities. (The four commonalities ...
11
votes
0answers
438 views

An incomplete crossword

Across: ...
11
votes
0answers
205 views

Translating a fiendishly exceptional automorphism of $S_6$ into a lay-math puzzle

Foreward: This post not a puzzle in itself, but an invitation for you to show off your puzzle-making skill regarding a given topic. Although the tag description of "puzzle-creation" seems to ...
11
votes
0answers
297 views

The Odd Street Clocks

The clockmaker took a walk after a lunch from a restaurant and across the block corner he found the old clock box with four similar looking clocks on every wall. It is in the middle of the street ...
11
votes
0answers
554 views

What is a BS Word™?

This is in the spirit of the What is a Word/Phrase™ series started by JLee with a special brand of Phrase™ and Word™ puzzles. If a word conforms to a special rule, I call it a BS Word™. Use the ...
11
votes
0answers
323 views

Quantum tic tac toe strategy

Most of us learn tic tac toe early in our life. Also, it is easy to find an optimal strategy for playing. How about Quantum tic tac toe? What is the optimal strategy for playing it? Rules On a ...
11
votes
0answers
379 views

Recurring Meeting

The computer scientist's assistant is late at work once again, trying to once again decode their bosses directions for the day. Under meetings, the boss has listed only a single meeting: ...
11
votes
0answers
797 views

An enrypted clue for the police

A well known German drug dealer contacted his accomplice through an encrypted note. The police caught the accomplice during a drug deal and found the note in his backpack. Note: (For those who can't ...
11
votes
1answer
1k views

Crack the pigeon code

Can you crack this message? It was discovered in a chimney in 2012 attached to a carrier pigeon and was most likely sent during the D-day invasions. The GCHQ was not able to crack it, even after ...
10
votes
0answers
354 views

Can you provide a hint on how to solve this Hex Cube puzzle?

I've been tackling this puzzle named "Hex Cube" which comes with the instructions "Can you decipher the message? You should be able to if you go back to basics and use a little bit of ...
10
votes
0answers
418 views

Impossible Cipher v1.0

When I create riddles, ciphers etc.. they seem to get solved within only a couple of days of writing. Well no more! This cipher may not be impossible but is extremely difficult. If left unsolved for ...
10
votes
0answers
382 views

A relatively easy cipher

You are the head of the cryptanalysis department, and you are pretty nervous because you have sent your best field agent, John, who also happens to be a cryptographer in your team, to find out who in ...
10
votes
0answers
255 views

Can you find the cipher that I used?

I have encoded a phrase, using a cipher that I invented. But I don't want you to decode it, rather I want you to figure out how my cipher works. This is the phrase that I encrypted Find the ...
10
votes
0answers
179 views

The Majestic but Draconian Dinner

We are hosting a dinner party. Here is a list of things you can take: Hotdog Grapefruit Oreos Potato Salad Cheetos Utensils Katlyn Predator Drones Banana However,...
10
votes
0answers
268 views

An Attempt at AV Puzzle

Here's another puzzle with visuals and sound. I hope you enjoy it! With Sound: https://youtu.be/yHkQdEu0QpA Static Image (the musical notes represent the music in the YouTube video): Hint 1 Hint 2
10
votes
0answers
300 views

Stool to love - who am I?

Recently, I was walking to Genua, where I stumbled upon Ego. He told me some Gordas were chasing him. Now, I usually don't follow Ego's advice, but before I could doubt him I saw Rozel and Fozel ...
10
votes
0answers
442 views

Grandma's keynote

Found this note which is addressed To my grandma, in her chest Since she's passed now, here's my quest.. What tickled her interest? And who invited her as guest?
9
votes
0answers
223 views

The Vanished Violinist

The inspector sighed as she lifted her head from the mess of notes, scribbles and diagrams on the desk. The air in the office was so thick she could barely make up the "no smoking" sign ...
9
votes
0answers
370 views

Dead By Daylight

This puzzle is a reference to a game, Dead By Daylight. Though you don't need a knowledge about the game. Consequently, there is no "video-games" tag. Story The Entity wants to have the ...
9
votes
0answers
267 views

Cryptic Puzzle for Puzzlers: PART II

You are a cryptanalyst who works for the US Army. You have been intercepting what is believed to be enemy spies' communiques. However, the documents are very normal looking: Good Morning, The lasagna ...
9
votes
0answers
480 views

Meteor strikes again

Part of a phone call: -...well why didn't you just say so? -It wasn't as easy as you thought, Jack. All the power lines here were destro--- -I know...It's not like we're living on a different ...
8
votes
0answers
217 views

What is a Shifting Word™?

This is in the spirit of the What is a Word/Phrase™ series started by JLee with a special brand of Phrase™ and Word™ puzzles. If a word has a certain property, I call it a Shifting Word™. You can use ...
8
votes
1answer
211 views

$a_n = 2n^2, n \geq 1$ (modified)

The puzzle asks to determine the next term in the sequence 2, 4, 8, 0, 0, 16... a. 32 b. 18 c. 20 d. 24 e. 0 The obvious answer for me would be 32, with these zeros serving as the "neutral ...
8
votes
0answers
214 views

Can you get to the final message?

I am unsure of the difficulty of this puzzle, but feel free to give it a try My prefix is almost dissolved My infix is an array My suffix forms nouns of action I am the key t nwl i queyh v Since it'...
8
votes
0answers
372 views

A Mathematical Cipher [cIosed]

Closed. This question is off-topic. It is not currently accepting answers. 💡 Want to improve this question? Update the question so it's on-topic for Puzzling Stack Exchange. Closed 1 second ago. ...
8
votes
0answers
146 views

Largest smallest unattainable score in Scrabble

Consider the following Scrabble board: We can play NO for 1 point, AI for 2 points, NOSE for 3 points etc as indicated on the right. All this obviously depends on having the correct letters on your ...
8
votes
0answers
199 views

What is a Patternful Word™?

This is in the spirit of the What is a Word/Phrase™ series started by JLee with a special brand of Phrase™ and Word™ puzzles. If a word conforms to a special rule, I call it a Patternful Word™. Use ...
8
votes
0answers
374 views

I'm a number with a special product, so name me when you think you've got it

In the blocks that come before, their special product tells us more. To guess my scheme you'll need calculation, but only little tests of recreation. Each block contains atoms strong as Thor, ...
8
votes
0answers
271 views

My drunken formula?

I know that today is an important day, but I can't remember why... All I have in my possession is this formula I wrote last night in my drunken stupor: You go here: $$B = 25 + \biggl(\frac{O}{...

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