# All Questions

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11k 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 / ...
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: ...
1k 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 ...
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, ...
738 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 ...
2k views

### Decrypting the Key

So I've been trying to solve this Riddle called "Phage is Spreading.." ...
1k views

### CSE Hex Cube Puzzle

I've been tackling this puzzle named "Hex Cube" from the CSE (Communications Security Establishment, the Canadian "equivalent" of the NSA) which comes with the instructions: "...
724 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, ...
589 views

### The Cryptic Tower

You stand before a cryptic tower. On a locked door of crumbling stone is a strange cipher. The text is partially obscured by mold-covered cracks: HOLLDW SILENCE BOUNLER WASFUS There are several ...
250 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 ...
569 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 ...
293 views

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582 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 ...
431 views

### Spot that puzzle

This diagram solves an occasionally seen member of a well-known family of optimization puzzles.  Spots ● generalize a component that is represented variously in different statements of these puzzles.  ...
521 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. ...
312 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 ...
405 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 ...
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 ...
1k views

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2k 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 ...
761 views

### Hidden message in rap text II: "Ya, a ray 'ave july joy!"

This puzzle is inspired by this one by @LukasRotter. Hopefully you don't mind me using similar (well, basically the same) format as yours, Mr. Rotter! ;) The same rapper released another teaser for ...
479 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 ...
172 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 ...
362 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 ...
404 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: ...
835 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 ...
323 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 ...
203 views

### What's the name of the kind of puzzle where in-story solvers have more information than us, and how far they get is a clue?

It involves logical/mathematical puzzle(s), so no wishy washy different interpretations like in riddles. The puzzle in question tells a story involving a puzzle, but some details about the puzzle in ...
630 views

### A device he have a great interest in

A group of friends challenged Mark, the brightest among them, to an escape room challenge (two rooms). They know Mark have a wide range of knowledge. But for this one they thought even the bright Mark ...
469 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. ...
445 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 ...
414 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 ...
270 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 ...
199 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,...
285 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
471 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?
459 views

### What is the battle?

You wake up in a strange room. No one is there, as far as you can tell. But there are three doors, a piece of paper and a numpad, which is a standard keyboard. (this is N. O. T. a 'what door should ...
408 views

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 ...
416 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, ...
496 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 ...
405 views

### What was the occupation of Jacob given the occupations of his siblings?

Once upon a time, there lived a humble household of 5 children: Sam, Mary, George, Hannah and Jacob. They each grew up to have successful careers: Sam - Real Estate Agent Mary - Arcade Owner George - ...
449 views

### Connect The Wall-Words:-

Edit:- We have a group of words here:- (Go check Hint 1) ACIDITY TIME MICROSCOPE MARKS LIGHT SCALE CHEMISTRY CLAW REAL LEAD INTEREST BIOLOGY DUCK RADICAL ACADEMY LEAF Goal:- Group these $16$ ...
301 views

### An Evil Cartesian Psycho

I came up with this puzzle when I was in high school. There is an island owned by an evil man who keeps some tourists who were visiting the island a few years ago captive. The authorities demanded ...
237 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'...
239 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 ...
686 views

### Image steganography / hidden message inside image (png, 8-bit gray+alpha)

I'm new to steganography and have been trying to figure this one out but some additional help would be appreciated. There is this image here: It supposedly has a hidden message in it that should lead ...
506 views

### Signatures of serial killer Edward Wayne Edwards?

This is from a real-life murder-mystery. In 2009 Edward Wayne Edwards was arrested and convicted of five murders, following a tip-off from his daughter April. Former detective John A. Cameron ...
425 views

### The highest poem

I am three, often a person, always a digit, and also witout. George POUST was his name. Manufactured by Ford between 1972 and 1976. YMCA was not my first team in my coaching career. Theory of ...
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}{...