All Questions

Filter by
Sorted by
Tagged with
3
votes
9answers
5k views

Why didn't the cop stop the lorry driver? [closed]

A police officer saw a lorry driver going the wrong way down a one-way street, but did not make any move to stop him. Why not? Let's see if I can make this puzzle not "too broad": there's no ...
5
votes
4answers
3k views

Good maze creation software?

I'm trying to make a maze for a puzzle hunt, and I can't find any good software for creating them. I seek an appropriate simple drawing tool, not a program to automatically create the maze. I ...
0
votes
1answer
2k views

This thing all things devour

Here is a riddle from the Hobbit. This thing all things devours; Birds, beasts, trees, flowers; Gnaws iron, bites steel; Grinds hard stones to meal; Slays king, ruins town, And beats high mountain ...
6
votes
2answers
744 views

Cultural Patrimony

Few month ago, I was on vacation visiting an old friend in his own country. We were sitting on his balcony enjoying the sea view from up the hill and listening to his old favorite music when he asked ...
4
votes
4answers
1k views

Don't rat out the secret answer

Here's a riddle for the day One fell in love with his music system Another led the opposers in Queensland One played the man playing a trick The last lost his love by his own hand Hint 1: ...
16
votes
1answer
910 views

The Origins of a Confusing Maze

Behold a maze of fuses (the black dotted lines) laid out on a grid:         The fuses can be lit, causing sparks to burn along them at a perfectly uniform rate: one segment per ...
14
votes
4answers
2k views

Decipher the location of the pirate treasure

Long ago, the pirate ship Wild Goose, led by Captain Oliver, sailed the coast of Nova Scotia. One night, according to legend, the Wild Goose was caught in a storm. Before she sank, Captain Oliver had ...
3
votes
1answer
5k views

Which is the door to heaven [duplicate]

After living a peaceful and calm life, you die a painless death. Your spirit starts ascending into heaven when suddenly you are approaching two doors. Both doors are completely identical and there is ...
2
votes
1answer
463 views

What's next in this letter sequence: B, C, N, O

What would come next in this sequence, and what is the source? B C N O
7
votes
15answers
10k views

Making 24 - Most Complicated Way [closed]

In this question, I am asking you to get to 24 in the most complicated way using the numbers below. One way to solve this is (9 x 8) / ( 6 / 2 ) = 24. But this is an easy way. I am looking for the ...
13
votes
1answer
1k views

The Hangman Game Backwards Again

It's been a while since one of these puzzles (created by Alex, see here for the first) has shown up, and I thought some might enjoy another one. fill in an "n" - You don't need to throw me out into ...
13
votes
3answers
1k views

Food for thought, or otherwise

Here's my first riddle on Puzzling SE. They say I'm a ship But I see no water for days You may think you know me From my cousin of holy ways Look for me in abandoned places And you ...
17
votes
2answers
1k views

New yet ubiquitous … what am I getting at?

With eight, I'm quite heady. With three, my claws ready. With thirteen, I'm downtrodden. With eighteen, said to be sodden. Alone, I'm quite new here, Yet ubiquitous everywhere. What am I?...
12
votes
3answers
1k views

Music from the movies ♬ ♬

The following six audio samples represent, perhaps, the best-known classical music compositions as they have been used in more than 150 mainstream movies. This question asks you to identify the six ...
7
votes
1answer
689 views

Find 2 heavy fakes among 11 coins on a 3-pan balance

I give you 11 coins, which look exactly the same. Among them are two fake coins. All genuine coins weigh the same. The fake coins are a little heavier than the genuine ones, and they may have a ...
7
votes
4answers
2k views

A Threes Of Cake

This question is similar to my other question Twos For Thought, which arguably was a better pun but I decided to recreate the question, except with threes! How many threes do you need to get to the ...
3
votes
5answers
707 views

In yellows and blacks

In yellows and blacks, He often lives on racks, He loves none but Penny. Hint:
4
votes
1answer
1k views

Room 40 - the Great War “Mystery”

"Have you heard of Room 40?" "No, Sir, I have not". "Good. For what I am about to tell you, if leaked, will cost us this war, son!" November 1914, London. Much to your ...
11
votes
2answers
481 views

Birthdays in different bases

Someone has recently tweeted: Last year I had my 50th. The year before was my 100th. This year it's my 30th. #NotAllNumbersAreDecimal What is he turning (base 10) this year? There's nothing in ...
7
votes
6answers
12k views

Words with most and fewest syllables for given length?

What is the greatest and least number of syllables that a word of a given length can have? More precisely, for each word length from 1 letter to 20 letters, find words of that length containing as ...
8
votes
3answers
2k views

The pyramid code

One day, a colleague from the office hands you the following message without a comment and makes a quick retreat out of your cubicle. Can you make head & tails from this? What is your colleague ...
7
votes
2answers
1k views

The impossible door!

You are standing at the door to a lost temple in Georgia (the former Soviet Republic). You are an expert in lock picking, but there is no keyhole. You then realise that there is a word that will open ...
18
votes
1answer
1k views

What is a Triad Phrase™?

Now that you are familiar with Cyclone Phrases™ and Scalable Phrases™, let's look at another kind of phrase. If a phrase adheres to a certain rule, then I call it a Triad Phrase™. Use the examples ...
4
votes
4answers
578 views

Twos For Thought

How many twos do you need to get to the number $100$ exactly? Example: $22+22+22+22+2^2+2^2+2^2$ This example method uses 14 twos and is obviously not ideal. Can you find a way that uses the least ...
7
votes
2answers
555 views

Numbers on a Blackboard

You are given an empty blackboard. Once a minute, you are allowed to do one of the following: Write two $1$'s on the blackboard Erase two copies of a number, $n$, and replace them with $n-1$ and $n+...
13
votes
2answers
659 views

Alex, Dave or Jeff

A man has plotted to blow up a building. The police have three suspects. They have received a letter telling the name of the suspect. But it is coded, to avoid one of the other members of the suspect'...
0
votes
3answers
1k views

Find a number that is 9 times bigger than total of its digits?

Find a number $X$ that is 9 times bigger than the total of its digits: for example if $X=abc$, then $X=9*(a+b+c)$. I don't know the number of digits; it could be 3 or 2 or more.
7
votes
2answers
281 views

Renouned Set Theory

Consider the following ten statements: $A$ do not have $B$. Some $C$ are $D$, but no $E$ are $D$. $F$ that are $A$ can still be $G$ if they have $H$. No $C$ that do not have $G$ can be both $H$ and $...
3
votes
2answers
760 views

The Word Game, I'm test running on you guys

So every year I've been doing this "Word Game" in which I write a riddle or ask a question and I ask my friends to answer it. My sister claims it too hard. Here it is: Who am I? I am but a ...
4
votes
1answer
220 views

The Infinite Creek [duplicate]

"Sarah", I said, "Have I ever told you about the times in my childhood when I'd go down to Infinity Creek?". "No", she replied, "but it sounds interesting". "When I was a boy, I lived next to a creek....
4
votes
2answers
1k views

Unique Licence Plates

Note: This is a Mathematical puzzle, not a Mathematical problem. Although the answer could be solved with mathematics, lots of problems on Puzzling SE could be solved with mathematics, and the problem ...
3
votes
1answer
230 views

The Old Miss Gruppe

Miss Gruppe is growing too old for her house - there are far too many rooms and it sometimes takes her days to find her way between the pantry and the kitchen! In honor of her accomplishments in the ...
14
votes
14answers
4k views

Alive, dead, alive, now dead

I communicated with you, not by normal means. The illusionist did everything it seems. Proximity can make me very shy. Without a bunch of these you would die. The bee, the seasons, maybe some more, ...
5
votes
1answer
394 views

What's the longest non-winning string in Insertion Ghost?

The game Ghost is a game where players take turns appending letters to the end of a word. The first person to form a complete word with at least four letters, or give a string of a letters that no ...
3
votes
2answers
533 views

Easy sequences of letters

Find the letters to fill the blank. T, Q, P, H, H, O, _, _, _ T, C, O, D, _ Hint 1:
6
votes
2answers
24k views

Water jug for gaining 8 gallons of water? [duplicate]

I have gone through simple water jug problems like this link but when there are 3 jugs: 16 Galoon jug with water filled. 11 Galoon empty jug. 6 Galoon empty jug. Find a solution to gain 8 Galoon, ...
13
votes
3answers
1k views

What is the subject?

Inspired by the recent "Name that Movie" puzzles, here is something similar. I will be giving away too much information if I tell you the subject, so you will have to work that out yourself. Once ...
-5
votes
1answer
11k views

X is impossible for god, X is above god, if you eat X you will die, the rich need X , the poor have X, X is a 7 letter word? [duplicate]

X is impossible for god. X is above god. If you eat X you will die. The rich need X. The poor have X. X is a 7 letter word. What is X?
10
votes
2answers
3k views

Connecting blue dots to red dots

Suppose $n$ red dots and $n$ blue dots are arranged in the plane so that no three dots lie on a single line. Show that you can connect each red dot to a blue dot using a line segment so that no pair ...
4
votes
3answers
2k views

Fitting rectangles into square (optimal/perfect rectangle packing)

I gave the puzzle you can see on the image below to a friend of mine for christmas last year. I thought it would be fun to dump it out in front of him so he would not know the solution. Unfortunately ...
18
votes
3answers
2k views

There's GOLD in dem der hills!

A pirate's treasure... Billy the pirate buried his plunder at the mouth of a large river. He killed all of his crew then made his way on foot back to civilization. He ended up getting sick with yellow ...
11
votes
7answers
3k views

Longest arithmetic expression where the answer is equal to the number of letters

You can use any mathematical operations represented by English words. These English words must be found in a commonly used dictionary. Spaces are neither letters nor words. You can not use the same ...
7
votes
3answers
694 views

Four Rings & Seven Digits

Replace a to f with the numbers 1 to 2 & 4 to 7, so that the sum inside each ring is the same. There is only one solution!
15
votes
4answers
2k views

Treasure hunt 'round the world! (clue 1)

If you're interested in starting the treasure hunt from the very beginning, check out the prologue! After mailing in the correct question to the given answer in the preliminary test, it took only a ...
16
votes
3answers
2k views

This title is not the answer

When it comes to perspectives, the second is fun The third is just fine in a romantic tongue Without this, to say you have lots might be trouble In fact it's so helpful you might order double ...
2
votes
8answers
3k views

A few simple riddles to get your brain going [closed]

Here are a couple of riddles for you. 1.) Where does twelve plus two equal two? 2.) A man walks up to you and says "If you tell a lie I will stab you with a knife. If you tell the truth I will shoot ...
6
votes
2answers
915 views

Name that Movie (part III)

In the spirit of thirds, this list is a list clues that roughly name movies that are each the first of a trilogy. 1. Not your breakfast cereal 2. ...
5
votes
5answers
982 views

Name that Movie (part deux)

I am writing to inform you that I have constructed another set of clues that will each lead you to a movie title. To make it more interesting, each of the movies has something in common. Whatever that ...
21
votes
2answers
2k views

Reach the Maximum by Flooring It

A nice easy puzzle for the math lovers out there. We're all familiar with the $\max$ function: $$\max \left( {x,y} \right) \triangleq \left\{ {\begin{array}{*{20}{l}} x&{{\text{if }}x \geq y} \\...
22
votes
4answers
2k views

Treasure hunt 'round the world! (prologue)

It's here. Finally here. For weeks you've waited, checking the mail every single day, to no avail - but today, your invitation has finally arrived. You eagerly tear open the envelope and read: ...

15 30 50 per page
1
361 362
363
364 365
419