Questions tagged [cipher]

A cipher is a simple method of modifying messages to make them unreadable except to readers who know the key. Common ciphers are Caesar, Vigenere, Atbash, and several types of substitution cipher. Other ciphers include polygraphic ciphers such as Playfair and Foursquare and numerical ciphers such as Polybius and Nihilist. Cipher puzzles sometimes make use of data encodings like Morse, Binary, or Base64.

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identify cipher? [closed]

I have this, I just need help identifying the cipher. Any tips/pointers are welcome! Text version (for those who can't view images) ...
Dasher Love's user avatar
7 votes
1 answer
270 views

They used to sing together

Who are they? They used to sing together. 16 8 7 7 39 and 6 1 68
Will Octagon Gibson's user avatar
3 votes
2 answers
312 views

Was Exhibit 5 of the Chaocipher ever solved, and if so who solved it and when?

Was Exhibit 5 of the Chaocipher (published c.1991) ever solved, and if so, who solved it and when? Chaocipher is a cipher that was created by J.F. Byrne in 1918 as a machine-based cryptography system,...
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2 votes
1 answer
220 views

bmf kgf dc yufy ckd yb crysn

A friend told me to try to decrypt this as a fun puzzle but won’t tell me the answer: bmf kgf dc yufy ckd yb crysn He gave me this (which I think is the key or at ...
theooofsof2023's user avatar
5 votes
1 answer
516 views

You probably don't have the courage to solve this. (THE LIST: PART 1)

ONE DAY, YOU WERE SCROLLING ON YOUR PHONE WHEN, YOUR MOM TEXTED YOU. READ THE STRING OF TEXTS: MOM: Hi honey! On the counter, I have put a list for you to do. But, keep in mind that one step is ...
Logan Sweeney's user avatar
1 vote
0 answers
141 views

A Journey around the Web

Are you ready to embark on a (rather short) journey? Word Wall - 6 groups of 3, with the answers forming 2 groups of 3. The final answers start with T and U. (They come together into a single thing, ...
Michael Chen's user avatar
2 votes
2 answers
187 views

A simple and quite fun cipher: Revisited

Background On October 11th, 2023, I posted "A simple and quite fun cipher puzzle" as my first puzzle on Puzzling Stack Exchange, which was a puzzle where each decoding method was to be ...
CrSb0001's user avatar
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18 votes
1 answer
817 views

A puzzle about ERIC

This is a puzzle about (7, 8, 8), or ERIC for short. Can you decode them? IM[K]N, OPQFR ABNP, AC V R[K]T, U R[K]T HIJK L, HIJK JPFH, SFH NPFJ L, NP[J]F V D, EF GF ERIC = ??P??[K] [J]?GFP ?[N]??[K]R
Amoz's user avatar
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20 votes
3 answers
1k views

Maze-Jigsaw Fusion

Hello there, maze lovers! Tired of solving normal mazes? Here is a maze puzzle with a little twist: a jigsaw-maze! The circular maze has been divided into four quadrants and scattered, so that you ...
ACB's user avatar
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17 votes
1 answer
1k views

Puzzle from Pythagoras

Pythagoras wants to… If 1a,2b,20k,50v and 600x Then what is 100 10 1000 3 ? My original puzzle
User235711131719's user avatar
19 votes
1 answer
944 views

Anyone Seen My Snorkel?

This is part 54 of the puzzle series Around the World in Many Days. Each part is solvable on its own. mqoı ugw7qж , zqv qw o h6ım v6ınɔ ugwo7 | zo 78վn £þxm εıqm conxnøqxw v8կox h6ımw , დnɔ þn 7დvn ...
Jafe's user avatar
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-6 votes
1 answer
172 views

another rotten puzzle

Transcript: ...
Sunny Lu's user avatar
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-3 votes
1 answer
212 views

World Puzzling Competition #2: bobby's transformation

Previously: This year, you were invited to attend the WPC, otherwise known as the World Puzzling Competition. The organizers also seem to suggest that there will be a 50 reputation bounty for every ...
Sunny Lu's user avatar
  • 2,854
-4 votes
1 answer
320 views

Vinegar on Caesar Salad

...
Sunny Lu's user avatar
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0 votes
1 answer
220 views

A QWERTY-based keyboard puzzle [closed]

There is a puzzle and clue. Answer is one (real) word only. Riddle: dtqrgvl Clue is: qwerty based keyboard
Curiospire's user avatar
3 votes
1 answer
198 views

These words are for you alone

Can you decode the message this tablet contains? Good luck! Note: The knowledge tag is by no means necessary to solve this puzzle, but certain knowledge could be helpful in verifying the answer. ...
Blue Herring's user avatar
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4 votes
1 answer
312 views

Never seen a 17 by 25 grid before? Well now you have

SNY.SMARTIE.ISDROPPEDONTO.AFRICTIONLESS.PLANE.WITH.NEGLIGIBLE.FRICTION..UPUPUPUP Hint:
Sunny Lu's user avatar
  • 2,854
4 votes
1 answer
287 views

More than a 10x10 grid?

Knowledge of my previous puzzle is helpful but not required. Transcript: ...
Sunny Lu's user avatar
  • 2,854
6 votes
1 answer
471 views

You can't play tetris like this!

Transcript: 98TPO.D4Q7 RIFZ78JAPM 50.TS.S25U N7.JU66A9N 2D742G89H2 60.N1ERT81 88D4DBSER2 T.3NAT4TI. .9U6HY8.S2 636W1Z623R Note: OP messed up the orientation of a ...
Sunny Lu's user avatar
  • 2,854
14 votes
2 answers
1k views

The S-340 cipher

Transcription: TIEICHJBEE EIHRONHOOY YTRNISNGAP NEDHRTSTTS HTGYAEOEIP NSUEAEOPWR SDMZPCSUUA ZYAEYZZKOE INZTRDFLLX SNYSMARTIE Hint: Partial solutions and ideas are ...
Sunny Lu's user avatar
  • 2,854
11 votes
1 answer
625 views

Simple Coordinate Puzzle with extra secret word

PETARM TUDTOH EOZRAT NYFZHY NEKILP KSSONE 23SW242N355W436SW436S432SE211SE6 ¡∞„¢£§Í„¢¡¡Í´§¢£˜´¢§¢´£™¡Í´™™¡Í£ Partial answers ...
Number Basher's user avatar
4 votes
0 answers
309 views

Lucas's interesting cipher

Lucas was fooling around with some letters when he encoded some text into Gsobj lwmtkd sbceugb vfy rgdjb.. Can you figure out the original text he had?
Alan Bagel's user avatar
6 votes
1 answer
448 views

Where are your kids?

You are a mom (or dad) with two boys, Stephen and Philip, aged 8 and 10. While you have been out in the garage, they have been in their separate rooms doing their homework before being allowed to play....
Stevish's user avatar
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3 votes
1 answer
279 views

Return to Montague Island, puzzle 5.2, quiz 5 [closed]

On this quiz, 005227 encodes the name Abby and 716123863 to Taylor. The key has something to do with encoding each letter as base 3 (c=010) and then writing the numbers in a column and reading down. ...
Russell Jernigan's user avatar
27 votes
1 answer
991 views

PSE Advent Calendar 2023 (Day 12): A peaceful tree

This puzzle is part of the Puzzling Stack Exchange Advent Calendar 2023. The accepted answer to this question will be awarded a bounty worth 50 reputation.< Previous Door Next Door > I wish you ...
sarsaparilla's user avatar
  • 6,243
1 vote
0 answers
241 views

Snailfence: Deciphering puzzle

The following text describes the method used to encipher it. Ssatnntloe-lree-itgaiima-t-odto-tl,hchaenisoa-a-oitnpsnefenf-p-coigtlxilon--letdnrhitC-iar-ae-reamralcppi-pttfp-dpt-ehrneWeaet-oet-nscewee-...
codewarrior0's user avatar
  • 6,701
1 vote
1 answer
383 views

Lyrics from a P!nk Song?

The subject line is a clue, but you’ll need to find where. Additional clue: look up. Or down, maybe. I have to admit the answer isn’t very rewarding. Sorry about that; it’s more a proof of concept ...
Pierre Paquette's user avatar
1 vote
1 answer
105 views

What next step could I take to solve the Dec. 4 cryptoquote from the Wisconsin State Journal?

So as you might or might not know, I enjoy solving cryptoquotes (also known as cryptograms), and sometimes get stuck on them. Here is today's cryptoquote from the Wisconsin State Journal: ...
CrSb0001's user avatar
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5 votes
0 answers
349 views

Decode the ancient prophecy

A team of archaeologists has discovered an ancient clay tablet. They understand the script it is written in, and have transliterated it to the Latin alphabet, but they do not understand the language. ...
Someone's user avatar
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3 votes
1 answer
236 views

How to solve the Nov. 29 cryptoquote in the Wisconsin State Journal?

apparently the cryptogram tag is a tag synonym for cipher so I guess that's what I'm using So recently I have been trying to get back into solving the cryptoquotes because I used to enjoy doing them. ...
CrSb0001's user avatar
  • 2,241
25 votes
1 answer
1k views

The FBI needs your help with this Zodiac killer message

During a recent thorough cleanup round at the main building of the San Fransisco Chronicle, an employee found a piece of paper stuck behind an archive closet in one of the many archive rooms. Her ...
sarsaparilla's user avatar
  • 6,243
6 votes
6 answers
6k views

'SILVER' -> ‘LESIRU' and 'GOLDEN' -> 'LEGOND', so 'NATURE' -> what?

I found this problem in an Indian Highschool Reasoning Olympiad. (image) If 'SILVER' is coded as 'LESIRU' and 'GOLDEN' is coded as 'LEGOND', then in the same code language how 'NATURE' will be coded ...
Darshit Sharma's user avatar
1 vote
1 answer
230 views

In a certain code 'NATIONAL' is written as 'JUBOKZMN'. How is 'ELECTION' written in that code?

In a certain code 'NATIONAL' is written as 'JUBOKZMN'. How is 'ELECTION' written in that code? (A) FMFDSHNM (B) DFMFMNHS (C) DMFMFHNS (D) MFDFHSMN I really tried many basic methods using positional ...
Darshit Sharma's user avatar
0 votes
1 answer
181 views

My first attempt at creating a self-referential cipher

I recently made a self referential cipher (meaning that the key is the same as what is being decoded) a while back and was planning on putting it on here after making the cipher a bit more difficult. ...
CrSb0001's user avatar
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2 votes
1 answer
336 views

the flute section keeps passing notes

(_ˇ෴ˇ)_⟋ 🎵🎶 (づ🪈◕‿◕ )づ日 ٩(◕‿◕)۶🪈 The band director is tired of the flutes passing notes in class, but he can't tell what the notes say. Here is one of the messages. 2 10 - 1 2 3 10 - 1 2 10 - 1 ...
MWQOJYNWQA's user avatar
2 votes
0 answers
106 views

phonetic encryption [closed]

0x09f 6 Wilhelm Paula 67dsa7 Friedrich Josef Gustav Toni Caeser Dora Gustav Oh762d. and Joseph 78sada Paula Ludwig Friedrich Joseph 67das 7d Tony 87h677 Dora Gustav h7f ehfs. Ox 786 bds7fds Paula ...
UMASHANKAR NS's user avatar
4 votes
1 answer
326 views

A fun and simple Nonogram... ...with a cipher

Goal of this puzzle: Find the hidden message in this Nonogram that I created. The puzzle: play online Hint:
CrSb0001's user avatar
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-3 votes
1 answer
219 views

see/// ,sm. upi eo;; gohitr yjod piy/

see/// ,sm. upi eo;; gohitr yjod piy/ Did you solve it? If so, post your answer below. Go solve it! It is really easy. It is a common secret language. (Not really secret though.)
user86796's user avatar
4 votes
1 answer
144 views

A Squared Cipher

While looking for squares, I stumbled across these numbers, which seemed to form a message: ...
SquareFinder's user avatar
-1 votes
1 answer
111 views

A 10x9 Hidato puzzle with a cipher

rot18(A se zgfwkldq jwsddq tsv sl ujwslafy hmrrdwk kg zghwxmddq sl kgew hgafl A sulmsddq kzgo aehjgnwewfl dgd) You might note that something is off about the following Hidato puzzle. Well, I guess in ...
CrSb0001's user avatar
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1 vote
0 answers
74 views

Finding solution from reading computer language puzzle [closed]

How to improve this puzzle? The task is to find a result, like a number from 1 to 10 from reading and understanding code. For example: ...
Attila Vajda's user avatar
8 votes
1 answer
508 views

Decipher this sentence, written in an original cipher

What does this sentence say? What manner of speech does it represent? I can safely declare that this cipher is entirely novel: Understanding this writing system does not depend on knowing any ...
isaacg's user avatar
  • 6,944
7 votes
0 answers
229 views

help? weird bug [closed]

hey stackoverflowers im very new to html so if one of you could give me a pointer on what went wrong here that would be really helpful. im trying to make an online⠀order⠀site but something happened ...
violetorigin's user avatar
1 vote
1 answer
856 views

But do puzzles really need visible or even highlitable text to be a good puzzle?

$\color{white}{fillertextsigh}$
CrSb0001's user avatar
  • 2,241
0 votes
1 answer
180 views

this puzzle is based

This message is a basic numeric substitution cipher. The key is the standard, regular alphabet in the correct order (ABC...XYZ). Here is the message: 3 16 15 7 20 1 22 23 13 1 22 10 16 15 21 27 16 23 ...
MWQOJYNWQA's user avatar
22 votes
1 answer
2k views

Animal Farm and the Porcine Penitentiary

It's a disaster at the farm! Overnight, some nefarious individual has stolen an animal. You're not sure which animal, but you're sure that when you went to bed there were ten, and now there are only ...
Johnson's user avatar
  • 4,640
1 vote
0 answers
148 views

The multi-layered multi-layered puzzle competition Part 1/11: February 16th, 2013

This is Part 1 of The multi-layered multi-layered puzzle competition, a 11 part puzzle hunt. Each part is solvable on its own, with the exception of the meta-puzzle at the end Note: This is entirely a ...
CrSb0001's user avatar
  • 2,241
2 votes
0 answers
274 views

My smol boi puzzle! :3

It should be noted that all this puzzle intends to do is give the second half of the answer to my first puzzle, while being a puzzle itself. Other than that, this is just your normal smol boi puzzle :...
CrSb0001's user avatar
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3 votes
1 answer
330 views

A simple and quite fun cipher: Redux

Previous ungood creation here Attribution to: Me :) Also sorry for all of the rot13("zrzrfcrnx") per se. I'm just trying to include a bit of a "humor" element into my ciphers. :) ...
CrSb0001's user avatar
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2 votes
1 answer
505 views

A simple and quite fun cipher puzzle

Don't worry, this is my creation :) Goal of this puzzle: Decrypt the puzzle to find out what the secret (final) message is. Each part of the puzzle depends on the previous part (except for the first)....
CrSb0001's user avatar
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