Types of Riddles: Six Kinds and How to Answer Each

The six main types of riddles are what-am-I riddles, who-am-I riddles, math riddles, word riddles, lateral thinking riddles and trick riddles. Each type hides its answer in a different place, so the fastest way into any riddle is to name its type first and then use the move that suits it.

This guide takes the types one at a time: how each one misleads you, how to answer it, and a riddle to try straight away. At the end, a table sets the six types next to each other.

What makes a riddle different from a puzzle?

A puzzle usually shows you all of its parts and asks you to arrange them. A riddle hides its subject inside words. The question is written so that the obvious reading points the wrong way, and the answer arrives when you find the second reading.

That is why a riddle feels unfair until it is solved and obvious a moment later. A fair riddle has exactly one answer that fits every line. A weak one has two answers, or none at all.

One paper on logic puzzles uses the same test. A paper published on 4 February 2020 treated a puzzle as good only if a single solution exists, and as clear if its own statements are enough to reach that solution ^[1].

Riddles also differ in what they hide. Some hide an object, some hide a role, some a number, some a word, some a whole situation, and some hide nothing except a trap in the wording. Those hiding places give the types below.

What are what-am-I riddles?

A what-am-I riddle speaks as an everyday thing and describes itself in a roundabout way. Every clue is true, but each one uses a word with two senses, and the riddle leans on the sense you would not pick for an object.

Here is a short one in our own words:

I hang on the wall. I have a face and two hands that keep moving all day, yet I can never clap. What am I?

The answer is a wall clock. Face and hands make you picture a body, but on a clock they are the dial and the two pointers. Hanging on the wall rules out a wristwatch, and hands that keep moving rule out a picture or a mirror on the wall, so only one answer fits every line.

How it misleads: it borrows words from another field, very often the body, and lets your mind fill in the wrong picture.

How to answer it: list every clue word that could have a second meaning. For each one, ask which objects use that word in a plain, everyday way. The answer is the object that turns up in every list. Then read the riddle again and check that nothing else fits as well.

Some what-am-I riddles hide their object in letters as well as in meaning. This one mixes both:

What are who-am-I riddles?

A who-am-I riddle asks you to name a role rather than a thing. In its simplest form it is a what-am-I riddle with a trade or job as the answer: a speaker describes what they do all day, and you name the work. The harder form gives you several speakers and what they say, and your job is to sort them into types, usually speakers who always tell the truth and speakers who always lie.

These truth-teller and liar riddles fill puzzle books, and they have also been studied formally, with tools from logic and from graph theory ^[1].

Here is a small example with two speakers, A and B. A claims that B lies. B claims that A is honest. Which of them tells the truth?

Try A as a truth-teller. Then B is a liar, yet B said something true about A, which no liar can do. Now try A as a liar. Then B tells the truth, yet B called A truthful, which is false. Every story breaks, so this riddle has no answer at all and fails the fairness test.

Breaking down is the rule rather than the exception for this simple form. As a paper published on 4 February 2020 explains, when truth-tellers and liars only make plain claims about who is which type, no such puzzle has exactly one answer unless it adds outside information, such as how many liars there are ^[1]. The same paper showed that allowing a third type of speaker, one who can only make self-contradicting statements, makes single-answer puzzles of this kind possible ^[1].

How it misleads: it invites you to trust a speaker before you know what type they are.

How to answer it: assume one speaker's type, follow every consequence, and drop the assumption the moment you reach a contradiction. Then test the other assumptions too, because a fair riddle leaves only one story standing.

Label riddles work the same way. Here, only one of the labels is honest:

What are math riddles?

A math riddle hides a number, or a fact about numbers, behind a short story. The story may add details that sound important but change nothing, leave out a step you are expected to notice, or describe a quantity in terms of itself.

That last trick is common in the what-am-I voice. Here is one in our own words:

I am a number. Double me, add six, and you land exactly on four times me. What number am I?

Write the story as an equation: two times the number, plus six, equals four times the number. Taking two times the number from both sides leaves six equal to two times the number, so the answer is three. Check it in the original words: double three is six, add six to get twelve, and four times three is also twelve.

Balance riddles are another well-known group. Every weighing can end in just three ways: the pans balance, the left side rises, or the right side rises, and that caps how many coins a few weighings can sort ^[2].

The rule can be bent in surprising ways. A paper published on 26 June 2025 studied a fake coin alternating between too light and too heavy on every weighing, and showed that when its starting weight is unknown it can still be found among up to thirteen coins with three weighings, or forty with four ^[2].

How it misleads: extra story, a missing step, or a quantity described in terms of itself.

How to answer it: turn the story into a short equation or a small table before you calculate anything. When you have a number, put it back into the original words and check that every sentence is still true.

What are word riddles?

In a word riddle, the answer lives in spelling, sound or letter order rather than in meaning. The clue describes what happens to the letters, so you have to treat the word as a row of letters instead of a thing.

Add two letters to my end and I turn into shorter. Which word am I?

The answer is the word short. Add the letters e and r and it becomes the word shorter. You picture the word losing length, yet it actually gains two letters; only its meaning says shorter.

Other word riddles use anagrams, where the same letters make two words, as listen and silent do. Some hide a short word inside a longer one, some ask for a word that reads the same backwards, and some rely on two words that sound alike.

How it misleads: it pulls your attention to meaning when the answer sits in the letters, or the other way round.

How to answer it: write the letters down. Try taking some away, adding some, reversing them and rearranging them. Say each result out loud, since some answers only work by sound.

What are lateral thinking riddles?

A lateral thinking riddle seems impossible because it leaves out the setting that makes it true. Each fact in it is correct, but you have filled in the wrong situation without noticing.

Name a place where adding five hours to nine leaves you at two.

A clock face. Five hours after nine o'clock it is two o'clock, because the count goes round again after twelve. The riddle relies on you picturing ordinary sums on paper.

How it misleads: it lets you supply a default setting, such as plain arithmetic, a normal day or the usual way an object is used, and then quietly breaks it.

How to answer it: list every assumption you made without being told. Then drop them one by one: a different unit, a count that wraps around, a reflection, another use for an object, an action read in a new way. The answer usually appears when the right assumption falls.

Rod riddles are a good place to practise this, since they reward looking at the shapes of the symbols and not only at their values:

What are trick riddles?

A trick riddle hides nothing at all. The answer sits in plain sight, and the question is phrased so that you rush past it.

Count the months of the year that have twenty-eight days in them.

The quick reply is one, the short month. The real answer is all twelve, because every month has at least twenty-eight days.

Self-reference is a close cousin of the trick riddle. A line like I am a liar refers to itself, and a statement of that kind can be neither true nor false ^[1]. When a riddle includes a sentence about itself, read it as a possible trap rather than as a clue.

How it misleads: speed. You answer the question you expected instead of the one on the page.

How to answer it: read the question again slowly, one word at a time, and answer exactly what it asks. Pay close attention to small words such as all, only, at least, before and after.

This one tests whether you think about which way a reflection really flips:

How do these riddle types line up against each other?

How can you tell which type of riddle you are facing?

Start with the final question, because it usually names the type.

• What am I? points to an object, or sometimes to a number or a word.
• Who is lying? or who is who? points to a role riddle.
• How many? or how much? usually means a math riddle, but check it is not a trick first.
• Clues about letters, spelling or sound mean a word riddle.
• A story that seems impossible calls for lateral thinking.
• A question that seems far too easy is often a trick.

Many riddles mix two types. The field riddle above is both a what-am-I and a word riddle, and plenty of number riddles are written in the what-am-I voice. When one approach stalls, switch to the first move of the next most likely type.

What habits help with every type of riddle?

A few habits work across all of them.

Read it twice. The first reading shows you the story. The second shows you the exact words, and that is where trick and word riddles hide their answers.

Name your assumptions. Most riddles work by letting you assume something. Writing down what you assumed is often enough to loosen the hold of a lateral or what-am-I riddle.

Check every line. When you have an answer, go back through the riddle and make sure each clue fits. A clue that only half fits means you have the wrong answer.

Hunt for a rival answer. If two answers fit, the riddle is weak or you have misread a clue. Either way, read it once more before you settle.

Where can you practise next?

Here is a riddle that mixes the what-am-I voice with a number riddle. Read the final question first, name the type, and then use its first move: