Questions tagged [cipher]
A cipher is a simple method of modifying messages to make them unreadable, but still possible to recover. Common ciphers are Caesar, Vigenere, Atbash, and several types of substitution cipher. Other ciphers include polynomial ciphers such as Playfair, Foursquare, etc.
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questions
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Peterhead Codes and Ciphers Club: Weekly Challenge
This is one of the cipher-based challenges I have created for my club. This is a lengthy puzzle so feel free to post partial answers.
My golden rule is that moving something that isn't glued down ...
10
votes
1answer
344 views
100 Years of GCHQ - A quick afternoon puzzle!
I'm off to the Science Museum London tomorrow, to the Exhibition celebrating 100 years of GCHQ. As such, they sent me a little reminder email this afternoon.
On the bottom of the email was the ...
-4
votes
1answer
128 views
Any help with this code (source text based game)
Source: Torn.com (text based rpg game)
31 30 35 20 31 32 31 20 31 30 31 20 36 38
20 37 30 20 37 31 20 35 34 20 31 31 39 20
31 31 34 20 37 34 20 37 35 20 36 35 20 31
32 32 20 31 30 36 20 35 33 20 31 ...
10
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0answers
218 views
The Hidden Treasures
My friend made this riddle and I think it’s pretty well made with lots of components, so here it is:
...
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0answers
73 views
What does this message in paper say? [on hold]
You wake up in an old horse wagon and get a piece of paper with strange symbols. What does it say?
//Anyone can help me. Please!
23
votes
2answers
1k views
A trip to the library
I try to go to the library at least once every month, so I've developed a pretty good relationship with the librarian, a nice old man who sometimes teases me about my broad set of interests. Yesterday,...
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0answers
114 views
Any help with this code [on hold]
Any help with this code?
It decrypts to plaintext word or words
I'm stuck, so any help is appreciated.
31 30 35 20 31 32 31 20 31 30 31 20 36 38
20 37 30 20 37 31 20 35 34 20 31 31 39 20
31 31 34 ...
13
votes
1answer
888 views
What a beautiful canyon!
My friend sent me an image of this beautiful canyon and asked me to work out where he is. More specifically, his latitude and longitude.
The only issue is that he's in Europe and this photo is of the ...
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votes
0answers
59 views
I can't find out which cipher code is being used! [closed]
Been trying to find the right cipher, but haven't had any like. Was wondering if someone could please tell me what it says, or what cipher is being used.
...
5
votes
0answers
215 views
What's the correct password?
A detective was working undercover to try to bust a suspected gang of criminals. He got invited to a fancy club that needs a password to get in, but the gang leader said that everyone will be given ...
3
votes
1answer
519 views
Secret message 01
116313333134261542156511321455121126113213151461123615112516114142
OK, so recently I made up a way of sending coded messages and I was just wondering how difficult it would be for someone to crack.
...
3
votes
1answer
163 views
I wrote you a message
Take the dogs out for Millan, but only after you find the alphas.
dog 1234 Ny nx
dog 556 fqrtxy Fzlzxy 567
dog 5819 gzy 2 nx 345
dog 13445 fqwjfid 74859 mty. 55645788
dog 1234 ...
2
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0answers
126 views
The Grand Grid II
Have a look at the first Grand Grid to get an idea of the basic concept
Each Grand Grid involves you discovering clues that allow you to solve a logic grid puzzle. The second in this series will be ...
8
votes
1answer
243 views
The Grand Grid I
This is the first in a series I am calling The Grand Grid. Each involves a logic grid puzzle that is solved by gathering clues presented in variously obscured forms. The description of the grid puzzle ...
3
votes
1answer
292 views
Word Search Cipher
I have come up with a cipher idea that probably isn't original but I can't find anywhere, and I wanted to get an idea of just how hard it is by seeing if anyone here can crack it. I would especially ...
4
votes
1answer
163 views
Rubio, please help Clark!
Clark who is consecutive in nature, lives in California near the 100th street. Today he decided to take his palindromic boat and visit France. He booked a room which has a number of thrice a prime. ...
9
votes
2answers
222 views
Luncheon in the dungeon
– "Sssslither..."
Brigitte jumped. The voice had whispered almost directly into her ear, yet there was nobody to be seen. She looked at the ground beneath her feet. Was something moving? ...
1
vote
1answer
117 views
A cryptic list of words
You find yourself trapped in a dark room. You say, "hello" and bright lights turn on, flooding the area. You see a piece of paper on the ground:
...
0
votes
1answer
112 views
What's the answer to this?
I've been sent this yesterday with no info and I'm so confused. Can anyone tell me what the message is?
Seh gdyla wdhjh, seh qhun alts bhn hqhunxyh plt axxbdyf gxu plt yhqhu gxryi lyi tx seh wrmmah ...
7
votes
1answer
119 views
A little bit of encryption
A little selfmade encryption riddle:
Whenever I'm searching for a solution, I have this feeling,
like standing on a single point.
While I take a step forward, I have the feeling I'm falling two ...
7
votes
1answer
295 views
Underworld Royalties
1. Mr. Edison's Travel Diaries
From Liverpool, James Edison traveled to Valencia. After watching the scheduled match, he then traveled to Italia and then Amsterdam where he promised to return in ...
2
votes
1answer
137 views
How to solve this coding decoding puzzle? [closed]
If in a certain code language CMWAX is coded as 51525525. Then what is the code for CIPKZ?
Any help will be highly appreciated. Thank you very much.
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vote
0answers
181 views
Find the PSE user name
Hidden in the ciphertext below is a user name from puzzling.stack.exchange. Who is it?
The intended answer uses all of the ciphertext, not just a snippet that happens to match somebody in some way.
<...
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2answers
102 views
A weird cipher inside video game
Recently a game named "Ode to a Moon" released.... during the gameplay there are several cipher sentences flashing on the screen. I was trying to decode them as a cryptography amateur(noob)，but still ...
8
votes
1answer
304 views
A periodic message
I was wandering around Washington, D.C., recently, not paying attention to where I was, thinking about codes and ciphers, when suddenly it hit me. No, really: a blast of wind blew a paper right into ...
3
votes
1answer
276 views
Need help with an online puzzle / riddle
I found this online riddle at m4tr1x.ws, but now I am stuck. It seems you need to gain deeper and deeper access to this virtual Matrix-style computer system. First you need to create an account via ...
11
votes
2answers
496 views
The Coded Chessboard
"If you're worthy, the secret is found within you," the wise old lady had told you before you had entered the villain's lair. When the townspeople had told you to seek her out for advice, you thought ...
4
votes
4answers
294 views
Defuse… It's going to blast!
You are an intelligent decoder. The FBI now needs your help to defuse a bomb. You move near it and find the following notes.
You have a glance at the notes. You are now ready to decode and defuse.. ...
7
votes
2answers
180 views
A journey to find me
The task is to find a word which is mostly used as a symbol in Math and Physics. It is also a giant in space.
Find the appropriate links from the below hints. The links (imgur- pages) will further ...
2
votes
1answer
132 views
My sports program
This is my daily sports program:
First exercise:
1) Stand up
2) Got on your knees
3) Keep both arms on your body
4) Pause
5) Lean your body slightly to the left
Second exercise:
...
12
votes
2answers
517 views
Ooohh, it all makes sense now! :D
Introduction
As requested by @Rubio, I am here to state that this is a metapuzzle based on other puzzles listed below.
"Ooohh, it all makes sense now! :D" ~ Mr Pie
The Puzzle
Or does it? Answer is ...
8
votes
2answers
273 views
Not Just Black and White
Answer for this puzzle is one word. Have fun!
Highlighted parts are where I realised I have clued it wrong... Sorry for all this inconvenience!
Hint:
usefulness level 1
usefulness level 2
This ...
6
votes
0answers
260 views
What causes these signs to follow this relation?
Can you find why does the below relation hold true?
Hint 1
Hint 2
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votes
1answer
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4
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1answer
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Decipher this three times, periodically
After hanging around this site for a little while I finally decided to put together a cipher for my first puzzle. I hope you guys enjoy it.
...
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12
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0answers
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6x7 Pokemon-based cipher
My friend made this cipher for me to solve and it has me stumped. Wondered if anyone else would want to take a crack at it. All it is is this image:
Names of the pokemon in order are (assuming I ...
3
votes
2answers
219 views
Decode this for the right answer
ABABAAABAAAABAABAABAABABBAABAAAAAAABAAAAABAAAAABBAAABBBBAABAAAAAAABBAAAABBAABABAAABAA
This an encrypted text. You need to decrypt it and encrypt it again to get the right answer.
8
votes
1answer
226 views
Riddle to Code 2: The return of numbers
The first is a pirates favorite letter.
The second is from a famous quote of shakespear.
The third is squaring it off in a famous formula.
The fourth is the first in a very well known song.
...
8
votes
1answer
209 views
Oops!!! Dropped it again!
I have dropped my laptop twice in the past and luckily nothing went wrong. Today while getting ready for college, I dropped it again - for the third time. This time, something is wrong. When I ...
1
vote
1answer
178 views
color coded puzzle
Help me solve this problem. As this site appreciates a little effort from the person who posted it. Here's my thought process:
1) The matrix starts with 0 ( gr, gr, gr). It has three places which can ...
10
votes
1answer
1k views
Elementary, my dear …
My list for today
Iodine-Sulfur+Americium-Scandium:Phosphorus
Iodine-Titanium+Molybdenum+Thorium+Yttrium-Lithium:Helium
Praseodymium+Oxygen+Vanadium+Erbium+Boron+Sulfur-Lithium:Aluminum
...
3
votes
2answers
230 views
Absent Employee's Password
You are the boss at an engineering firm.
Recently a rather eccentric employee named Mr. Robemer made an abrupt exit when you accused him of devoting his worktime to his hobbies. Robemer stormed out ...
2
votes
1answer
106 views
Musical Chairs Cipher: Double Trouble
This question is a continuation of the first question: Musical Chairs Cipher.
The basic rules:
Six children -- Alice, Ben, Carl, Denise, Eddie, and Flo -- are playing a game of musical chairs in ...
2
votes
1answer
65 views
Musical Chairs Cipher: Intermediate
This question is a continuation of the first question: Musical Chairs Cipher.
The basic rules:
Six children -- Alice, Ben, Carl, Denise, Eddie, and Flo -- are playing a game of musical chairs in ...
16
votes
3answers
523 views
A Salute to Poetry
In honor of National Poetry Day (which happens to be March 21st - go figure), I have crafted a puzzle which I hope will do a small bit of justice to this day.
Carefully hidden in the four sections ...
19
votes
4answers
548 views
Baby don't hurt me no more
You've been taken captive by a spy organization who seems convinced you're an agent for the other side. You've already spent a miserable day of questioning and torture and have no wish to spend ...
8
votes
2answers
118 views
Musical Chairs Cipher
Six children -- Alice, Ben, Carl, Denise, Eddie, and Flo -- are playing a game of musical chairs in class. On each of the five chairs is written a seven letter word.
The children start out in ...
3
votes
1answer
132 views
Cricket or Cipher?
Congrats Bass for finding the answer of Find this Cricket terminology
Find the names of three Cricket stadiums from the below codes:
1.
dy30q7i
2.
23jgo36
3.
5y39fqo
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votes
1answer
209 views
Where is Steve?
Steve is a modern painter. He and his brother live in England. Today his brother found him missing. He searched everywhere, but couldn't find Steve. But in Steve's room, he found the below painting.
...
