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A password problem focuses on finding the proper response to a challenge, typically a guard wanting a password.

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Puzzle Dungeon: Floor 3

Puzzle Dungeon Floor 3 is here! Previous Floors: 1 2 One rule that I forgot to clarify earlier (but worth clarifying now) A normal passage or door will not take you to a room on a later floor. ...
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1answer
148 views

Puzzle Dungeon: Floor 2

After bravely circumventing floor one of Puzzlandia's dungeon and descending the staircase, you find yourself in room $2^4$, or $16$ (as the staircase said.) Items you have: rusty sword (+1 ...
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1answer
278 views

Puzzle Dungeon: The Intro

Inspired by this puzzle that I found by looking randomly at the top-voted puzzles up to page 7. Don't question it. In the magical land of Puzzlandia (I am very creative at making up names), there ...
14
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1answer
627 views

What's the passcode?

One morning, as you wake up, you feel something on your face: It's a letter. As you take it off your face to read it, You fall off your bed. Uurrrgh, you say and stand up. The letter says: ...
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5answers
409 views

Self Destruct Activated

NOTE: Very much of this question is part of the challenge, and exact wording sometimes matters. Please do not edit "For clarity" without ensuring that your edit does not disturb the puzzle. When you ...
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1answer
143 views

Security to the party[Part 39]

A party is being held at a local mansion. The host is very rich and his success is because of one thing — his famous recipe for Spaghetti! The only guests that may attend are people who correctly ...
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4answers
2k views

Can you escape?

You have to find a passcode to escape from a kidnapper. Enter the right code or the room will be flooded with water. The kidnapper will give you hints, as he thinks, you are not smart enough. Hints: ...
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2answers
525 views

Password in Rubik's cube

Alice needs a strong password, but she has terrible memory - so she have decided to hide it in a Rubik's cube she happens to carry around all the time Alice starts with a solved 5x5x5 Rubiks Cube She ...
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1answer
1k views

Given these numbers, find the secret word

My son is 12 years old and his task was to find an English word from these numbers: 13; -8; 2; 2; -6; 12; 2; 6; -1; -12 where ...
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1answer
1k views

A free pack of pantyliner if you could guess the number

At the opening of a new pantyliner shop, the manager would give its customers a free pack of pantyliner if they could guess the number of a word given. Angie came and asked a word, the manager said ...
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1answer
247 views

Hack into the file!

You are a government worker. You have successfully intercepted a file from terrorists. But you need to put in a password. This is the only clue: 1 4 1 1 4 4 4 4 2 5 5 3 3 4 4 1 4 2 4 4 4 2 4 4 Hint: ...
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1answer
639 views

Hack into the system

Important: Some of you guys may be concernced about the "unsecure" page, which I can fully understand. However, be sure, that you don't provide any personal data. You are simply trying to hack the ...
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2answers
333 views

The most probable key

You broke into John Doe's house and found the safe. It has a combination lock with 4 dials ranging from 0 to 9 each. ...
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1answer
201 views

Generate a valid string

I have been observing her for just over a week now. She had seen me but didn't know she was being watched. As people pass she hands them a piece of paper. Some even stop and put money in a cigar box ...
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2answers
536 views

What would '34' answer?

Here's a riddle for you: If you ask the question to the 1, it'll answer: None of them. If you ask the question to the 90 , it'll answer: 6 If you ask the question to 86, it'll answer All of ...
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1answer
922 views

Counter, Clock and Wise

Remember I told you that I am slowly turning eccentric? Well, turns out, it's worse than I had imagined. See, writing some random words on a piece of paper is one thing, and taking apart the hands of ...
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3answers
281 views

One cold night for (…)

There is a great magnificent wall to your east Look at wall There is a small gate in the wall. Open gate The gate is locked. <...
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1answer
248 views

Simple glyph and cypher

A spy acquired a microfilm containing the list of clues that he can decode to complete the hinted message in the password for opening the electronic vault of old records. What is the password? ...
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1answer
741 views

The Third Room of Numbers Dungeon

After being enslaved by the evil Lord Numbers, you have been forced to navigate his treacherous puzzle rooms. After easily defeating the first and second puzzle rooms, you stumble into the third room, ...
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4answers
464 views

A themed poem. Can you guess the numbers?

Six numbers, which can be repeated, are selected from the set $\{0,..,9\}$, and form a sequence: $<{*}{*}{*}{*}{*}{*}>$. Each verse in the themed poem corresponds to a number. Can you find the ...
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4answers
674 views

Can you figure out the password?

This past week, I was trying to remember my password for my computer. However, no matter how hard I tried, there was just no way that I could figure it out. Eventually, after several attempts, I gave ...
10
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1answer
1k views

A bouncer named Bob

A new club has recently opened downtown. You're not usually a clubbing person, but what catches your attention about this one is that apparently, instead of having to present your ID to get in, you ...
2
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2answers
157 views

Entering the star club

Inspired by this question, I created this puzzle. I was walking down a street, I see a star club with a security guarding the entrance door. A man approaches him, and the guard flips a middle and a ...
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2answers
6k views

A rude security guard

I was walking down a street, when I see a door, with a security guard. A man approaches him, and the guard flips a middle on him. "Well that escalated quickly." you think. The man, unfazed, replied ...
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1answer
492 views

Discovering the past

An entry in the 19th fortnightly challenge... Soon it'll be your 20th birthday. Time is ticking... and you're spending it in the car going to check the new house you will be moving into with your ...
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1answer
431 views

Secret Reception

I think I just came upon a secret reception. I was just about to go in when a guard stopped me and asked for my number. I wasn't sure how the system worked but I was able to see the checklist of ...
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1answer
172 views

A number that is a word

Below I have a string of numbers, these numbers form to become words and letters. It's your job to find out what the phrase is. 10-0-12-15-16-24-0-21-9-6-0-2-15-20-24-6-19 Good luck with ...
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3answers
491 views

Twelve Zodiac Coins

Another old puzzle I dug up from my creations: this time I'll try and add in a bit of story, too. I'll try my best not to throw in any undue red herrings. "Hello?" "Hey, [insert name here]! It'...
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6answers
834 views

A Colourful Escape [closed]

You wake up in a room, you don't know where you are. You look around, you see a computer, a note, and door with an 9 digit combination lock. You go up to the note, it reads: I heard you were a ...
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2answers
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The princess arrived safely at the castle

The princess took the correct and safest path on the crossroad, seeing lots of beautiful butterflies along the way and is now standing in front of prince Laniff's castle. However, it turns out she ...
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1answer
395 views

Reveal the password in the blank text

To get more evidence, a police is trying to hack a criminal's computer. He finds a suspicious transaction file, but it is protected by a password. Than he find a text file which he thinks contain the ...
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1answer
250 views

Merr Doue, If be Eufel

You've been invited to a secret meeting of the Puzzlers (who cannot be named in person). Well, by invited, more sort of given the opportunity to be invited. You were sent an email containing an image ...
17
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5answers
1k views

A secret reception

This is it. This is the night. Megina, a fellow puzzler, has been invited to a secret reception, by a secret society, in a secret place (yes, a lot of secrets). She has already discovered the place. ...
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2answers
256 views

What is the secret password of the rabbit? [closed]

Once a talking rabbit came to me and told me, "I will take you to the moon," then it took me near a spaceship. I was shocked to see it, but I had to enter a 7 digit password to open the door of ...
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2answers
853 views

The Mathematics Club

There's a new cool kids club in town called the Math Club. Of course you want to go in, but the only way in is if you know the password. Next to the door (and the bouncer) is a large sign that says: ...
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1answer
331 views

I went on a world tour and came back home

After you enter the right password, once again the door opens before you. You are not surprised to see another door blocking your path; looks like they want a three letter password this time. However, ...
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2answers
529 views

The Beginning Stops at the End

After a few minutes of thought, the password finally becomes obvious. You can sense your body shivering as you slide the letters into correct position with quivering fingers. The 'D' at the last slot ...
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2answers
1k views

What was my luggage password

So I went to the new high security airline and gave them my luggage, then they told me, I needed a password. Thankfully I always used the same number lock for my luggage. Alas, they said my password ...
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5answers
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Password for mobile

So, there I was, standing in front of my mobile, my best friend Eve pulled one of her infamous puzzling prank... The mobile is patterned lock and there was a post-it on my mobile, reading : What's ...
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2answers
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When you give it out in the wrong way

To know the secrets of the universe and hence attain ultimate power, you just need to enter a four-letter password. All you have is a sheet of paper with the following written on it, which is ...
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6answers
838 views

“Free” tickets?

Today I received an email from a friend: ...
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2answers
458 views

Yet another… Password

Help me figure out my password, please. I need it to vote in the elections. Here is the formula I used to create the password: Stacks and Stacks of culinary 2196's hometown Tallest there ...
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1answer
5k views

My password is 2

Evil mastermind PhD Evil, is trying to destroy the north pole. In order to foil his plan you need to log on to his computer. Alas you don't know the password, thankfully PhD Evil thinks he is too ...
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1answer
233 views

What is the password?

You are a mechanic for McSmith Waterworks. You are called on site due to an emergency. A secret chamber has been discovered and some machinery in it has been activated. This machinery starts ...
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7answers
1k views

♦ Series - Getting a free donut

Introduction There is a way to get a free donut at a coffee shop near the Stack Exchange offices. However, you are required to solve a phrase and convert it into a single number. Codes You watch ...
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4answers
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Gain Access to the Café's Internet

There's a cool new cybercafé in town called #DECAFE The café charges a fee to use their computers, but if you BYOC (bring your own computer) you can get on their ...
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1answer
791 views

Breaking a systematic password

Saturday, 2nd April 2016 - somewhere several meters below surface "Report, agent." "Mission 'Capture the bird' was not fully successful, sir. The surprise raid ...
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2answers
248 views

Unlock the code!

Feeling Puzzled This is about finding a base-10 6-digit (numeric) password. The clues given are enough. Note that in the clues, $x_1...x_6\in\{0,\dots,9\}$. $x$ is the code. Clues $x_1 > 6$ $x\...
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2answers
806 views

What will be the passcode for entry into this party? [duplicate]

I came across this question in a Mental Ability Test. The question is as follows — Anita, a girl, goes to a party. Entry into the party requires a special passcode. In order to know the ...
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8answers
377 views

A remote password

I may have forgotten my password for my TV... All I can remember is its 4 letters long, and only involves letters. Knowing that I might forget, I hid a clue on the TV remote. Can you help me ...