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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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
890 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
149 views

another rotten puzzle

Transcript: ...
Sny Smartie's user avatar
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-3 votes
1 answer
203 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 ...
Sny Smartie's user avatar
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-3 votes
0 answers
233 views

Vinegar on Caesar Salad

...
Sny Smartie's user avatar
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2 votes
1 answer
181 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
191 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
305 views

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

SNY.SMARTIE.ISDROPPEDONTO.AFRICTIONLESS.PLANE.WITH.NEGLIGIBLE.FRICTION..UPUPUPUP Hint:
Sny Smartie's user avatar
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4 votes
1 answer
285 views

More than a 10x10 grid?

Knowledge of my previous puzzle is helpful but not required. Transcript: ...
Sny Smartie's user avatar
  • 2,264
6 votes
1 answer
466 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 ...
Sny Smartie's user avatar
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13 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 ...
Sny Smartie's user avatar
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11 votes
1 answer
612 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
3 votes
0 answers
283 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
432 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
273 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
977 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
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2 votes
0 answers
227 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
  • 6,290
1 vote
1 answer
382 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
102 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
344 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
233 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
  • 1,622
23 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
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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
223 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
-1 votes
1 answer
164 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
  • 1,622
2 votes
1 answer
331 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
105 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
310 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
  • 1,622
-3 votes
1 answer
217 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
142 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
107 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
  • 1,622
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
499 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
  • 5,807
7 votes
0 answers
227 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
851 views

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

$\color{white}{fillertextsigh}$
CrSb0001's user avatar
  • 1,622
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
  • 4,568
0 votes
0 answers
141 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
  • 1,622
2 votes
0 answers
262 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
  • 1,622
3 votes
1 answer
317 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
359 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
  • 1,622
12 votes
1 answer
511 views

a numerical headline

I picked up the English-language version of the popular tabloid Bild von Affen, and was surprised to see this headline. What does it mean? 1 69 39 64 13 71,   46 27 6 12 61 33   7 74 32 24 44 47   25 ...
msh210's user avatar
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3 votes
1 answer
328 views

An anagrammed logic puzzle!

ot rleow utbrctsa aacpilt hwti dioiatdn het ryuo s-bcBPEFfJDfeFmksmPOkChDhrgBqjD-i---ffeNB
nomad.lw's user avatar
  • 139
12 votes
2 answers
698 views

A sudokey and 14 messages

This puzzle is part of the Monthly Topic Challenge #15: Multi Puzzle — two (or more) puzzles in one. Remarks: Feel free to post partial solutions. This is a multi-puzzle: If you found the titular 14 ...
Retudin's user avatar
  • 8,239
1 vote
1 answer
226 views

Cheese from Denmark

You'll need "cheese from denmark" for this cipher puzzle. Denmark Portugal 1/2 France "hello" ?AI EBOM AEEDY EHT SEOU EPNHS TNHG OS EPNHS "F" AN AI SEBOM SSEHÆ AI ...
poco's user avatar
  • 2,198
3 votes
0 answers
150 views

The Mono-Quantum Condrum

You are presented with a locked box, and on its surface, you notice a sequence of peculiar symbols: ⌬ ⌅ ⊙ ⊡ Next to the symbols, there's an inscription: ...
Aitzaz Imtiaz's user avatar
0 votes
1 answer
171 views

Good cipher with a "password"?

I'm starting to create a puzzle, but I'm going to need a cipher that will be impossible (or at least very difficult) to crack, but can be easily decoded with a key. I first looked at the one-time pad ...
Blue Herring's user avatar
  • 1,491
2 votes
1 answer
244 views

#TenderfootSpiral

Clues: Two hikers on an incline arrow with numbers. Hiker 1 says: 38.548493. Hiker 2 says: -105.998749. Sequence: Hiker 17711 Hiker 0 377 0 144 1 10946 233 987 0 2584 6765 75025 Hiker = ...
Tyler's user avatar
  • 1,093
15 votes
1 answer
845 views

A Trivial Pursuit #07 (Geography 2/4): String Theory

This is part 7 of A Trivial Pursuit, a 25-part puzzle hunt. Each part is solvable on its own, with the exception of the meta-puzzle at the end. If e* t* u* v* w* x* y* is H... What relevant (if ...
Stiv's user avatar
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