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1500 questions
34
votes
24 answers

An Only Connect Wall

The 16 words below may be partitioned into 4 groups of 4 thematically connected words. What are those connections and groups? Text…
Jonathan Allan
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34
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6 answers

An unusual and very hard number sequence problem

I heard this number sequence problem about 25 years ago from a maths lecturer. What number should go in the place of the question mark in this mathematical sequence: ..., 30, ?, 60, 90, 140, 225, 372, 630, ... I generally dislike number sequence…
Jaap Scherphuis
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34
votes
18 answers

I am a dessert without tea - What am I?

I am a body part in flames The earth and I move the same I am a dessert without tea When it comes to cake, I'm not easy What am I? Overall hint: Each line infers a different word. Each different word is an alias of the answer. Hint for Line 1: …
hypern
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34
votes
21 answers

3:3! It's a football score!

Given to me, by a friend: How would you make 20, using two threes? You may use any basic operation. And others, such as square roots (the symbol), factorials, etc. Any operation is allowed. Just two threes, though. You can't raise a three to any…
Athena
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34
votes
4 answers

Good Apple Hunting

The boys brought him in for questioning, but I didn't think he had anything to do with this. Not really. I just had to know if he knew anything pertinent about that strange passage in the old man's will. I proceeded to tell him how his old computer…
Chowzen
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34
votes
6 answers

Gunfire at dawn

A group of ten bandits stand in a flat desert, with no pair the same distance apart. Tensions grow, and at the crack of dawn each bandit fires a single bullet at the bandit closest to him. All have perfect aim and all those that are hit are…
rnaylor
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34
votes
1 answer

A Boring Riddle

What is the one-word solution to the following riddle? Backward in your leg, forward in red ink. Stung, piece and digit. What is the link?
Hugh Meyers
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34
votes
1 answer

The Treasure of The Mictal Kings

So this is it. The last challenge. Here's where I either get filthy rich, or get myself killed like ol' Professor Alembic. Goodness, I hope that's not his skull. That's the door to the legendary Treasure of the Mictal kings... or to my doom. I have…
Yehuda Shapira
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34
votes
12 answers

Mr. Hilbert and the Problem of the Erroneous Equation

Having had just checked into the Grand Hotel, Mr. Hilbert slumped into the hotel room armchair with relief. Finally he could have some peace and quiet and solve the quaint riddle his colleague gave him! He pulled a note out from his breastpocket,…
Hackiisan
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34
votes
1 answer

What is a Halved Word™?

If a word has a certain property, I call it a Halved Word™. In each of the short, unrelated sentences below, only one of the choices is a Halved Word™. The sentences do not affect whether a word is a Halved Word™. Case, font, and letter/word…
JLee
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34
votes
3 answers

Draw 4 straight lines to create 10 equal squares in this image

You can draw up to 4 straight lines in order to create 10 equal squares in the following figure:
java guy
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34
votes
1 answer

What is the missing word?

On the roadside last week, I found what appears to be a page from a farmer's journal. Although the spelling and grammar might not be 100% correct, I can easily read all but one word of it. There is a hole in the paper (shown as a blank line below)…
JLee
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34
votes
1 answer

Binary cryptogram from a friend

My friend sent me a "puzzle" in binary, and said that there are multiple steps to solving the puzzle, all of them including decryption. I translated the binary into text and he said that was a good first step, but I have absolutely no idea what…
alexander
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34
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3 answers

There are at least three Kevins on Puzzling. I plan to trap them in my labyrinth

Note: please do not edit the title! It originates in a challenge in Stack Overflow chat. I have rounded up all ten (currently) of the Puzzling SE users named Kevin and trapped them in my labyrinth. The only way out is across a narrow bridge which…
Rand al'Thor
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34
votes
2 answers

A mysterious email from Ryanair

You are a secret agent in the service of the KGB, and after a setback when the higher-ups thought your cover had been blown, you have embarked on a highly dangerous mission to infiltrate MI6. Under the pseudonym of Flynn Smith, you are working…
Rand al'Thor
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