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Socks which may or may not match

You just won 2016 socks. Some of them are white, some are blue. The color of each sock was randomly chosen, with a 50/50 probability. Is it more probable that the socks can be paired, or that you will ...
2k views

Detectives vs Nelson: The Chessboard Serial Killer

This is about Nelson, a serial killer who, after each murder, leaves a chess diagram in the scene of the crime. These chessboards give the detectives the opportunity to decipher where, how and when ...
289 views

What is this object?

originator of yingluck plays this: shush it like a zebra no wait, it wasn't that, it was the oVer one Hint 1: Hint 2:
1k views

How would you like your face? Scrambled?

Great! First day on the job here at the F.B.I., and I've got a mess on my hands. Someone hacked into Langley's mainframe and scrambled twelve of the mugshots that we have on file, and it's my ...
300 views

...
395 views

Third timer's a charm

Three motorized 24-hour light timers are arranged between a power outlet and a light bulb, with timer A parallel to a daisy chain of timers B and  C. For these timers, devise schedules that ...
206 views

What happened there between Alice and Bob

So our favourite couple, Alice and Bob finally decided to get married ;) Bob was already working in a well reputed company as Information Security Analyst. Alice, used to get bored at home, so she ...
289 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\...
22k views

IQ test question with diagonal lines in 3x1 grids

Can someone explain me the logic behind this? I think it is hard. The question is: What comes next in the pattern? (out of the 5 possibilities)
2k views

The Curse of the Ancients

The night has grown fearful. It has been a fortnight since the rising - when the dead have begun to shamble out of their graves, hunting and preying on sleeping men and women and children. The people ...
145 views

...
688 views

Need help to find more missing tiles

Thanks to all your help in (What is the letter?), I was able to fix my mother's tile! Unfortunately, as clumsy as I am, as I was patching this tile up, I smashed a few more. There's a letter/s missing ...
615 views

I run on the edge of a diamond

I have a lot of friends with the same name as me, but we're all different. I love to swim and dive. You might find me at a ball game, at a festival, or lying down outside. I changed my name when ...
295 views

A troubling doubling

The answers to all the clues below are rhyming doublets. (Except there is one rhyming triplet, which is marked.) So if I say: Hirsuite stone fruit you reply: Or if I say: Friendly—but not ...
187 views

A simple enough riddle

Here's a simple riddle. I can be found in the ocean as well as in your pocket. I can be found in the adventurous as well as the curious. I can be found new when cast from old.
468 views

Vacuum Salesman [duplicate]

A vacuum salesman rings on the door of a woman, trying to sell her a vacuum. The woman declines the continous offers and gets annoyed by the persistent salesman. She eventually offers to buy a vacuum ...
441 views

A Rhymeless Riddle

I am your new friend, ornately adorned, With a prime seat at the table and manners to match. I was summoned from the vault for destruction, And in purity, purify. But should I join with ...
303 views

A fellow agent requires your help

Agent, One of your fellow field agents has dropped off documents at a specified location, however as a tech-incompetent FBI boss I have no clue what's wrong with the message they sent me. Could you ...
852 views

A quick little riddle [duplicate]

A man and a woman were driving in their car when it broke down. The man decided to go for help at a gas station a few miles back. He made sure nobody except for the woman was in the car, rolled all ...
645 views

Without a single word

Answer is a well-known object, which at the same time is a location name. I'll post additional hints if needed. Hint 1: Edit: More visual hints.
1k views

Need help finding the solution for this Altekruse/Burr puzzle

I have a small wooden Burr/Altekruse puzzle comprised of 12 pieces. The pieces come in two shapes, as seen below. There are 8 of the lower left piece and 4 of the upper right piece. I can't remember ...
3k views

I Solemnly Swear That I Am Up To No Good

Quite simple. Find the odd one out, follow the instruction to give you a letter and then give me the code word. Two pieces of advice first: 1) They gradually get harder (in my opinion) 2) Don't ...
1k views

A Ridiculous Looking Puzzle

My friend let me borrow his computer for the weekend because he had some files I needed. His computer is password protected and, instead of writing the password down, he gave me a sheet of paper with ...
2k views

Confused clock face puzzle

There is a clock face with the correct (target) numbers written in circles. But somebody confused the clock face and created a crazy clock with numbers written in ellipses. Your task is to repair ...
326 views

“No one's more queer than me” - What am I?

No one's more queer than me. I can be a river, or a rain, water pours from me. Think I'm easy? I'll burn your tongue. What am I?
2k views

Word of advice: If someone beats you in a guess-the-song challenge, dominate them

Remember my friend, Jim, who, y'know, gave me that "retaliation" puzzle, which I pretended to be stumped at, just to make him happy? Well, anyone who's met me knows I don't keep people happy for long. ...
354 views

For my first puzzle here, something short and simple. Well, short. My first is a space. My second leads to a space. My whole is in space. What am I? Hint 1: Hint 2: Hint 3:
180 views

What does this represent?

#actions /* 0,1,0,0 */ .words /* 0,0,1,0 */ Hints: Hint 1: Hint 2: Hint 3: Hint 4: Hint 5: Hint 6: Hint 7: Hint 8:
292 views

How will you weather this riddle?

Battle me, if you dare: I can have four copies (some argue five), Or over a hundred. I am essential to many things, Yet you can be set without me. What am I? Hint:
293 views

I met a lot of answers

I was once searching for some words that I thought I'd lost, but then someone told me If you solve this riddle, brought within rhyme, you will find it again! After realising I had to find the ...
893 views

Reverse puzzling - What is my brother solving?

This puzzle is inspired by the previous reverse puzzles My brother and I love puzzles. But I know he is solving some puzzles without me. So yesterday I sneaked into his bedroom to find out what he is ...
3k views

Find the odd number out (from math book)

Found this in my brother's math book, we tried to solve it but didn't manage to find any solution. Apology if it it too easy, but we really tried to find it. ...
120 views

highest number of unique links in a chain of words

What sequence of words in the OED linked pairwise by spelling or pronunciation has the highest number of unique links? The spelling 'read' can be pronounced at least two ways, as in "Yesterday I read ...
2k views

Your car won't start? Don't look at me. (Another easy “What Am I?”)

Another "What Am I?" riddle: People think I'm abhorrent, but I'm just the first one they want to charge when there's been an attack! I'm just a slave to the machine, and I'll die without ...
1k views

“I'll make a stew of the lot of you”

I'll speak of my letters; though you might be confused: So many to choose from; so many are used. I sometimes have two, often three, at times four. Dot if it helps you; for me it's a bore. I'm ...
237 views

Create a special Playing Schedule - Logical/Mathematical Solution

Last Week in Training (I'm a Cycleball player) a logial problem/puzzle tricked us. And I'm wondering if there exists a logical solution for the next time. Cycleball is played in pairs (2 Players vs. ...
2k views

A “What Am I” riddle about a thing

Here we go: I can be sneaky, I can have thorns, I can even be a coward, I can be thick or thin, live or dead, AND I can play classical music. What Am I? ...
893 views

I'm trying something a little different

Solve and combine: 1.1 Pull me from the lion's paw and place me on the page! 1.2 ...
1k views

Brillig! Another riddle!

A nice easy riddle to start the day with. ...
303 views

Mathematical Puzzle

1 * 1 = 1 2 * 13 = 2 3 * 3 = 3 44 * 8 = 4 73 * 5 = 0 90 * 60 = 0 Q1) What is the smallest set of numbers under this operation that can equal 5? 6? Q2) What is 8 * 9? Hint:
869 views

I am short lived… yet I love helping people!

My life is so short... too short, indeed. However, I like using it to help people live better. At least, this is what I was made for! Since my countless brothers and I were born, we've been ...
541 views

Frugality 101: How to Replace Your Police Force with Cardboard Cutouts

In the far away land of Frugalia - a land where the conservation of money has been elevated to the status of any of Newton's laws - a conundrum is being had. There has been an upsurge in citizens ...
177 views

Constructing Tortuous Tours

We'll define a tour of some N x M grid as any sequence of tiles such that the first tile is the bottom left corner, any two consecutive tiles are adjacent, and every tile appears in the sequence ...
325 views

I'm doing a math puzzle but I wish it was a riddle… Do it for me?

AbcDEfg + aBcdefg + ABcDEfg = 24 ABcdefG + aBCDEFg = 2 AbCDefg + aBCdefg + aBCdefg = 0 AbcdEFg + aBCDEfg = 9 ABCdefg * AbCdefg = 6 AbCdefg + aBcdefG + ABcDeFG * AbCdefg = ???
3k views

A Puzzle That Dims a Tornado

I visited a mysterious old man at the place where he lived and worked. He told me a story then he shook my hand. I felt very strange. I went outside of his house to clear my head. I saw a creature ...
2k views

longest sentence using only one word and variants [closed]

This is an open ended puzzle of wordplay. Here's an example of acceptable words: reed, read, read, red, etc. They are linked by either different spellings of the same pronunciation (reed and read), ...
424 views

Perfect strategy for the 2nd player in 'The coins on a table game'

I've just seen this and looked at the duplicate post it directs me to. I'm interested in a point raised in one of the comments in the answer, although it wasn't resolved in that question. It is ...
670 views

Correct way to add 3 to sum(1/k!) to get 8

The recent spat of 22+4 puzzles took me back to 1974, when my high school math teacher (and cross-country coach), Dr James Quinlan, asked us to solve $$3+\sum_{k=0}^\infty \dfrac{1}{k!} = 8$$.