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58 Brain Teasers That Will Leave You Stumped

Claire Nowak

Solving brain teasers boosts brain power, keeps your memory strong, and entertains everyone to no end. See how many of these tricky puzzles for adults and teens you can figure out—without cheating!

How many of these tricky brain teasers can you answer correctly?

Tricky brain teasers

Brain teasers are more than just simple puzzles and riddles. Technically, a brain teaser is a type of puzzle or brain game , often involving lateral thinking . That means to solve it, you’ll have to use a creative, less straightforward thought process and the solution won’t be right in front of you. Below, you’ll find a collection of pictures and word brain teasers for all difficulty levels. Plenty of them aren’t easy, so make sure you have some time to really think about the correct answer. As a heads up, the answers to these brain teasers are right below the question, so make sure you don’t scroll too far and cheat! How many can you get right? If you want brain teasers for kids , we’ve got plenty of those, too!

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A man pushes his car to a hotel and tells the owner he’s bankrupt. Why?

A man pushes his car to a hotel and tells the owner he’s bankrupt. Why?

Answer: He’s playing Monopoly. Try out some of these visual brain teasers too.

You are in a room that has three switches and a closed door. The switches control three light bulbs on the other side of the door. Once you open the door, you may never touch the switches again. How can you definitively tell which switch is connected to each of the light bulbs?

You are in a room that has three switches and a closed door. The switches control three light bulbs on the other side of the door. Once you open the door, you may never touch the switches again. How can you definitively tell which switch is connected to each of the light bulbs?

Answer: Turn on the first two switches. Leave them on for five minutes. Once five minutes has passed, turn off the second switch, leaving one switch on. Now go through the door. The light that is still on is connected to the first switch. Whichever of the other two is warm to the touch is connected to the second switch. The bulb that is cold is connected to the switch that was never turned on.

I left my campsite and hiked south for 3 miles. Then I turned east and hiked for 3 miles. I then turned north and hiked for 3 miles, at which time I came upon a bear inside my tent eating my food! What color was the bear?

I left my campsite and hiked south for 3 miles. Then I turned east and hiked for 3 miles. I then turned north and hiked for 3 miles, at which time I came upon a bear inside my tent eating my food! What color was the bear?

Answer: White. The only place you can hike 3 miles south, then east for 3 miles, then north for 3 miles and end up back at your starting point is the North Pole. Polar bears are the only bears that live at the North Pole, and they are white. 

A man is looking at a photograph of someone. His friend asks who it is. The man replies, “Brothers and sisters, I have none. But that man’s father is my father’s son.” Who was in the photograph?

A man is looking at a photograph of someone. His friend asks who it is. The man replies, “Brothers and sisters, I have none. But that man’s father is my father’s son.” Who was in the photograph?

Answer: His son. These are the hardest riddles ever —see if you can solve them.

What is special about these words: job, polish, herb?

What is special about these words: job, polish, herb?

Answer: They are pronounced differently when the first letter is capitalized. For a more hands-on experience, check out these printable brain teasers .

Forrest left home running. He ran a ways and then turned left, ran the same distance and turned left again, ran the same distance and turned left again. When he got home, there were two masked men. Who were they?

Forrest left home running. He ran a ways and then turned left, ran the same distance and turned left again, ran the same distance and turned left again. When he got home, there were two masked men. Who were they?

Answer: The catcher and the umpire.  These tricky logic puzzles will keep you guessing.

A man stands on one side of a river, his dog on the other. The man calls his dog, who immediately crosses the river without getting wet and without using a bridge or a boat. How did the dog do it?

A man stands on one side of a river, his dog on the other. The man calls his dog, who immediately crosses the river without getting wet and without using a bridge or a boat. How did the dog do it?

Answer: The river was frozen.  Only 2 percent of people can solve Einstein’s riddle . Can you do it?

In 1990, a person is 15 years old. In 1995, that same person is 10 years old. How can this be?

In 1990, a person is 15 years old. In 1995, that same person is 10 years old. How can this be?

Answer: The person was born in 2005 BC. See if you can spot the difference in these almost identical pictures .

A sundial has the fewest moving parts of any timepiece. Which has the most?

A sundial has the fewest moving parts of any timepiece. Which has the most?

Answer: An hourglass—It has thousands of grains of sand.  This is what happens to your brain when you do a puzzle .

What makes this number unique: 8,549,176,320?

What makes this number unique: 8,549,176,320?

Answer: It has each number, zero through nine, listed in alphabetical order.  These brain games will help sharpen your mind—how many can you complete?

Arnold Schwarzenegger has a long one. Michael J. Fox has a short one. Madonna does not use hers. Bill Clinton always uses his. The Pope never uses his. What is it?

Arnold Schwarzenegger has a long one. Michael J. Fox has a short one. Madonna does not use hers. Bill Clinton always uses his. The Pope never uses his. What is it?

Answer: Their surname. Can you identify these animals based on close up pictures of their fur ?

What five-letter word becomes shorter when you add two letters to it?

What five-letter word becomes shorter when you add two letters to it?

Answer: Short.

Your parents have six sons including you and each son has one sister. How many people are in the family?

Your parents have six sons including you and each son has one sister. How many people are in the family?

Answer: Nine—two parents, six sons, and one daughter.  See if you can find the missing number in this puzzle .

I am the beginning of sorrow and the end of sickness. You cannot express happiness without me yet I am in the midst of crosses. I am always in risk yet never in danger. You may find me in the sun, but I am never out of darkness.

I am the beginning of sorrow and the end of sickness. You cannot express happiness without me yet I am in the midst of crosses. I am always in risk yet never in danger. You may find me in the sun, but I am never out of darkness.

Answer: The letter S. These tricky word puzzles will leave you stumped.

An Arab sheik is old and must leave his fortune to one of his two sons. He makes a proposition: Both sons will ride their camels in a race, and whichever camel crosses the finish line LAST will win the fortune for its owner. During the race, the two brothers wander aimlessly for days, neither willing to cross the finish line. In desperation, they ask a wise man for advice. He tells them something; then the brothers leap onto the camels and charge toward the finish line. What did the wise man say?

An Arab sheik is old and must leave his fortune to one of his two sons. He makes a proposition: Both sons will ride their camels in a race, and whichever camel crosses the finish line LAST will win the fortune for its owner. During the race, the two brothers wander aimlessly for days, neither willing to cross the finish line. In desperation, they ask a wise man for advice. He tells them something; then the brothers leap onto the camels and charge toward the finish line. What did the wise man say?

Answer: The rules of the race were that the owner of the camel that crosses the finish line last wins the fortune. The wise man simply told them to switch camels. Try these math riddles only the smartest can get right.

A man was walking in the rain. He was in the middle of nowhere. He had nothing and nowhere to hide. He came home all wet, but not a single hair on his head was wet. Why is that?

A man was walking in the rain. He was in the middle of nowhere. He had nothing and nowhere to hide. He came home all wet, but not a single hair on his head was wet. Why is that?

Answer: The man was bald.  Here are some word search puzzles you can print for free.

Fourteen of the kids in the class are girls. Eight of the kids wear blue shirts. Two of the kids are neither girls or wear a blue shirt. If five of the kids are girls who wear blue shirts, how many kids are in the class?

Fourteen of the kids in the class are girls. Eight of the kids wear blue shirts. Two of the kids are neither girls or wear a blue shirt. If five of the kids are girls who wear blue shirts, how many kids are in the class?

Answer: 19. Test your brain with these short riddles .

Paul's height is six feet, he's an assistant at a butcher's shop, and wears size 9 shoes. What does he weigh?

Paul’s height is six feet, he’s an assistant at a butcher’s shop, and wears size 9 shoes. What does he weigh?

Answer: Meat.

The person who makes it has no need for it. The person who purchases it does not use it. The person who does use it does not know he or she is. What is it?

The person who makes it has no need for it. The person who purchases it does not use it. The person who does use it does not know he or she is. What is it?

Answer: A coffin.  Don’t let the fun stop here! See if you can figure out these 12 detective riddles only the smartest can solve.

You're escaping a maze, and there are three doors in front of you. The door on the left leads to a pit of lava. The door in the center leads to a room filled with deadly gas. The door on the right leads to a lion that hasn't eaten in three months. Which door do you choose?

You’re escaping a maze, and there are three doors in front of you. The door on the left leads to a pit of lava. The door in the center leads to a room filled with deadly gas. The door on the right leads to a lion that hasn’t eaten in three months. Which door do you choose?

Answer: The door on the right. A lion that hasn’t eaten in three months would be dead.  Can you master these math puzzles ?

What has cities, but no houses; forests, but no trees; and water, but no fish?

What has cities, but no houses; forests, but no trees; and water, but no fish?

Answer: A map.

If I am holding a bee, what do I have in my eye?

If I am holding a bee, what do I have in my eye?

Answer: Beauty. Because beauty is in the eye of the beholder (bee holder).  These are the most challenging jigsaw puzzles you can buy.

How can 8 + 8 = 4?

How can 8 + 8 = 4?

Answer: When you think in terms of time. 8 AM + 8 hours= 4 o’clock.

The water level in a reservoir is low, but doubles every day. It takes 60 days to fill the reservoir. How long does it take for the reservoir to become half full?

The water level in a reservoir is low, but doubles every day. It takes 60 days to fill the reservoir. How long does it take for the reservoir to become half full?

Answer: 59 days. If the water level doubles every day, the reservoir on any given day was half the size the day prior. If the reservoir is full on day 60, that means it was half full on day 59, not on day 30. If you’re loving these challenges, you’ll get a kick out of these tongue twisters .

A farmer needs to take a fox, a chicken, and a sack of grain across a river. The only way across the river is by a small boat, which can only hold the farmer and one of the three items. Left unsupervised, the chicken will eat the grain, and the fox will eat the chicken. However, the fox won't try to eat the grain, and neither the fox nor the chicken will wander off. How does the farmer get everything across the river?

A farmer needs to take a fox, a chicken, and a sack of grain across a river. The only way across the river is by a small boat, which can only hold the farmer and one of the three items. Left unsupervised, the chicken will eat the grain, and the fox will eat the chicken. However, the fox won’t try to eat the grain, and neither the fox nor the chicken will wander off. How does the farmer get everything across the river?

Answer: The farmer must follow these steps.

What is 3/7 chicken, 2/3 cat and 2/4 goat?

What is 3/7 chicken, 2/3 cat, and 2/4 goat?

Answer: Chicago.  These are the best riddles for kids . Can you solve them?

A red house is made from red bricks. A blue house is made from blue bricks. A yellow house is made from yellow bricks. What is a green house made from?

A red house is made from red bricks. A blue house is made from blue bricks. A yellow house is made from yellow bricks. What is a green house made from?

Answer: Glass.

Why is the letter F like death?

Why is the letter F like death?

Answer: Because without it life is a lie, or it makes life a lie.

A man describes his daughters, saying, “They are all blonde, but two; all brunette but two; and all redheaded but two.” How many daughters does he have?

A man describes his daughters, saying, “They are all blonde, but two; all brunette but two; and all redheaded but two.” How many daughters does he have?

Answer: Three. A blonde, a brunette, and a redhead. 

If you love brain games, make sure you see what Wordle is all about. And if you already play Wordle, make sure you check out your very own Wordle assistant, WordleBot .

If you have a 7-minute hourglass and an 11-minute hourglass, how can you boil an egg in exactly 15 minutes?

If you have a 7-minute hourglass and an 11-minute hourglass, how can you boil an egg in exactly 15 minutes?

Answer: To boil the egg in exactly 15 minutes, follow these four steps.

How far can a squirrel run into the woods?

How far can a squirrel run into the woods?

Answer: Halfway. After that, he’s running back out of the woods.  Does your brain hurt? Here are some easy riddles almost anyone can solve.

There is a word in the English language in which the first two letters signify a male, the first three letters signify a female, the first four signify a great man, and the whole word, a great woman. What is the word?

There is a word in the English language in which the first two letters signify a male, the first three letters signify a female, the first four signify a great man, and the whole word, a great woman. What is the word?

Answer: Heroine.

Guess the next three letters in the series GTNTL.

Guess the next three letters in the series GTNTL.

Answer: I, T, S. The complete sequence is the first letter of every word in the sentence.

What is next in this sequence of numbers: 1, 11, 21, 1211, 111221, 312211, ______?

What is next in this sequence of numbers: 1, 11, 21, 1211, 111221, 312211, ______?

Answer: 13112221. Each sequence of numbers is a verbal representation of the sequence before it. Thus, starting with 1, the next sequence would be “one one,” or “11.” That sequence is followed by “two one,” or “21,” and so on and so forth.

You are in a place called Wally’s World and there is only one law. There is a mirror, but no reflection. There is pizza with cheese, but not sausage. There is pepper, but no salt. There is a door, yet no entrance or exit. What is the law?

You are in a place called Wally’s World and there is only one law. There is a mirror, but no reflection. There is pizza with cheese, but not sausage. There is pepper, but no salt. There is a door, yet no entrance or exit. What is the law?

Answer: Each word in Wally’s World must contain double letters.  See how you do with these viral riddles and puzzles .

Four people arrive at a river with a narrow bridge that can only hold two people at a time. It's nighttime and they have one torch that has to be used when crossing the bridge. Person A can cross the bridge in one minute, B in two minutes, C in five minutes, and D in eight minutes. When two people cross the bridge together, they must move at the slower person's pace. Can they all get across the bridge in 15 minutes or less?

Four people arrive at a river with a narrow bridge that can only hold two people at a time. It’s nighttime and they have one torch that has to be used when crossing the bridge. Person A can cross the bridge in one minute, B in two minutes, C in five minutes, and D in eight minutes. When two people cross the bridge together, they must move at the slower person’s pace. Can they all get across the bridge in 15 minutes or less?

Answer: Yes, they can cross in exactly 15 minutes. The group of four must follow these three steps.

During which month do people sleep the least?

During which month do people sleep the least?

Answer: February (there are usually fewer nights in February).

In my hand I have two coins that are newly minted. Together, they total 30 cents. One isn’t a nickel. What are the coins?

In my hand, I have two coins that are newly minted. Together, they total 30 cents. One isn’t a nickel. What are the coins?

Answer: A quarter and a nickel. 

Find a number less than 100 that is increased by one-fifth of its value when its digits are reversed.

Find a number less than 100 that is increased by one-fifth of its value when its digits are reversed.

Answer: 45 (1/5 of 45 = 9, 9 + 45 = 54).

Which three letters can frighten a thief away?

Which three letters can frighten a thief away?

Answer: ICU.  Getting all of these brain teasers right? Try out these printable crossword puzzles to test your smarts.

Four cars come to a four-way stop, all coming from a different direction. They can’t decide who got there first, so they all go forward at the same time. They do not crash into each other, but all four cars go. How is this possible?

Four cars come to a four-way stop, all coming from a different direction. They can’t decide who got there first, so they all go forward at the same time. They do not crash into each other, but all four cars go. How is this possible?

Answer: They all made right-hand turns.

Is the capital of Kentucky pronounced Louisville or Luee-ville?

Is the capital of Kentucky pronounced Louisville or Luee-ville?

Answer: Neither. The capital is Frankfurt. 

You're in a dark room with a candle, a wood stove, and a gas lamp. You only have one match, so what do you light first?

You’re in a dark room with a candle, a wood stove, and a gas lamp. You only have one match, so what do you light first?

Answer: The match.

Put a coin into an empty bottle and insert a cork into the neck. How can you remove the coin without removing the cork or breaking the bottle?

Put a coin into an empty bottle and insert a cork into the neck. How can you remove the coin without removing the cork or breaking the bottle?

Answer: Push the cork down into the bottle. Then shake the coin out.

What letter comes next in the following sequence? D R M F S L T_

What letter comes next in the following sequence? D R M F S L T_

Answer: D—each letter represents one note in the diatonic musical scale: Do, Re, Mi, Fa, Sol, La, Ti, Do.

I have a large money box, 10 inches wide, and 5 inches tall.  Roughly how many coins can I place until my money box is no longer empty?

I have a large money box, 10 inches wide, and 5 inches tall.  Roughly how many coins can I place until my money box is no longer empty?

Answer: Just one, after which it will no longer be empty.  These are the hardest puzzles you can get on Amazon .

What do an island and the letter “t” have in common?

What do an island and the letter “t” have in common?

Answer: They are both in the middle of water.  Here’s how to solve a jigsaw puzzle fast .

What is unusual about the following words: revive, banana, grammar, voodoo, assess, potato, dresser, uneven?

What is unusual about the following words: revive, banana, grammar, voodoo, assess, potato, dresser, uneven?

Answer: Take the first letter of each word and place it at the end. It will spell the same word backward.

How can a man who shaves several times a day still sport a long beard?

How can a man who shaves several times a day still sport a long beard?

Answer: He’s a barber. 

What fastens two people yet touches only one?

What fastens two people yet touches only one?

Answer: A wedding ring.

Which creature walks on four legs in the morning, two legs in the afternoon, and three legs in the evening?

Which creature walks on four legs in the morning, two legs in the afternoon, and three legs in the evening?

Answer: Man. He crawls on all fours as a baby, then walks on two feet as an adult, and then walks with a cane as an old man. These are the most famous riddles in history .

What rocks but does not roll?

What rocks but does not roll?

Answer: A rocking chair.

An elevator is on the ground floor. There are five people in the elevator including me. When the lift reaches the first floor, one person gets out and two people get in. The lift goes up to the second floor, three people get out, five people get in. It then goes up to the next floor up, no-one gets out but 12 people get in. Halfway up to the next floor up the elevator cable snaps, it crashes to the floor. Everyone else dies in the elevator except me. How did I survive?

An elevator is on the ground floor. There are five people in the elevator including me. When the lift reaches the first floor, one person gets out and two people get in. The lift goes up to the second floor, three people get out, five people get in. It then goes up to the next floor up, no-one gets out but 12 people get in. Halfway up to the next floor up the elevator cable snaps, it crashes to the floor. Everyone else dies in the elevator except me. How did I survive?

Answer: I got off on the first floor.  How many of these trick questions can you answer correctly?

Which word logically comes next in this sequence? Spots, tops, pots, opts…

Which word logically comes next in this sequence? Spots, tops, pots, opts…

Answer: Stop. All the words are anagrams of each other. Check out these cool optical illusions that will make you question everything.

Which tire doesn’t move when a car turns right?

Which tire doesn’t move when a car turns right?

Answer: A spare tire.  These are the classic board games everyone should own .

What 4-letter word can be written forward, backward or upside down, and can still be read from left to right?

What 4-letter word can be written forward, backward or upside down, and can still be read from left to right?

Answer: Noon. Try these Christmas brain teasers that are almost impossible to solve.

Brain teaser 57, icons of 4 silhouettes

Mr. Jenkins is trying to find a butler he can really trust. Out of the four candidates, James, Hudson, Paul, and Steven, he knows that two are honest and the other two are compulsive liars. From what each one of them says, can you work out which two are the liars?

JAMES: “Neither Paul nor Hudson tells the truth.” HUDSON: “If Steven is a liar, then James is trustworthy.” PAUL: “If, and only if, James is not an honest person, then Steven, too, has a rather loose attitude to the truth.” STEVEN: “What Paul said is untrue.”

Answer : James and Paul are the two liars. You have to see these optical illusion photos —they aren’t what they seem!

Brain teaser 58, icons of man and woman

It’s not easy to figure out who’s who when the Brewer family gets together. The brother of Nick’s uncle Manny is named Mark. Lisa’s grandparents are Nick’s parents. Mark is married to Lisa’s grandma. The children of Angela’s daughter Sandra are named Lisa and Sasha. So who is Angela’s brother-in-law?

Answer : Manny is Angela’s brother-in-law. Next, try out these riddles for adults that will test your smarts.

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Logic Puzzles

One of the best brain teasers and riddles goes as follows: There are three switches downstairs. Each corresponds to one of the three light bulbs in the attic. You can turn the switches on and off and leave them in any position. How would you identify which switch corresponds to which light bulb, if you are only allowed one trip upstairs? Solution and More Puzzles

Logic Riddles

Brothers and sisters, I have none but this man's father is my father's son. Who am I looking at? Solution and More Riddles

Logic Questions

You are shown two doors - one leading to hell and the second one to heaven and only the door guards know what is behind the doors. One guard is always lying and the other is always telling the truth (of course, you don't know who is lying). You can ask only one guard one question. What question can get you to heaven? Solution and More Problems

Einstein's Riddle

A fellow encountered a bear in a wasteland. Both got frightened - fellow ran to the north, bear to the west. Suddenly the fellow stopped, aimed his gun to the south and shot the bear. What color was the bear? Solution and Grid Puzzles

River Crossing Puzzles

Three missionaries and three cannibals want to get to the other side of a river. There is a small boat, which can fit only two. To prevent a tragedy, there can never be more cannibals than missionaries together. How could all of them get safely across the river? Solution and More Similar Puzzles

Water & Weighing

If you had a 5-liter bowl and a 3-liter bowl, and an unlimited access to water, how would you measure exactly 4 liters? Solution and More Weighing Puzzles

Numbers & Sequences

The day before yesterday I was 25 and the next year I will be 28. This is true only one day in a year. What day is my birthday? Answer and More Number Puzzles

Algebra & Cryptograms

Replace each letter for a unique digit so that the equation is correct. (J+O+I+N+T) 3 = JOINT Answer and More Alphametics

Geometry Puzzles

Matchstick puzzles, picture & rebus puzzles, new riddles.

Check out good new riddles and brain teasers posted to our New Puzzles Forum this week. You could be the first person to solve them. Enjoy! More Unsolved Riddles

Top 10 Puzzles

You've got 27 coins, each of them is 10 g, except for 1. The 1 different coin is 9 g or 11 g (heavier, or lighter by 1 g). You should use balance scale that compares what's in the two pans. You can get the answer by just comparing groups of coins. What is the minimum number weighings that can always guarantee to determine the different coin. Answer and More Top 10 Puzzles

Famous Paradoxes

If someone says "I always lie", are they telling the truth? Or are they lying? Discussion and More Paradoxes

More Fun for the Brain

If by some miracle you would still be bored , then be sure to check out several unblocked games that can be a lot of fun. One of the best games I ever played is Bloxorz - give it a try, you won't regret it. It's simple and addictive for any puzzle enthusiast.

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These 20 Tough Riddles for Adults Will Have You Scratching Your Head

Put your logic and math skills to the test. No cheating!

riddles problem solving games

🤯 You love hard riddles. So do we. Let’s work through the toughies together.

So go grab a pencil and a piece of scratch paper and prepare to rip your hair out (and we really do mean that in the best way possible). When you think you’ve got the right answer, click the link at the bottom of each riddle to find the solution. Got it wrong? No worries, you have 19 other riddles to test out.

Navigate Through Our Riddles:

The King’s Orders / How Many Eggs? / The Gold Chain / Pickleball / Circuit Breaker / Two Trains, Two Grandmas / Ant Math / Peppermint Patty / Great American Rail Trail / A Cruel SAT Problem / Movie Stars Cross a River / Tribute to a Math Genius / One Belt, One Earth / Elbow Tapping / Whiskey Problem / Doodle Problem / Stumping Scientists / What ’ s On Her Forehead? / Keanu for President / Who Opened the Lockers?

decorative hr

Riddle #1: The King’s Orders Make for One Hell of a Brain Teaser

Difficulty: easy.

King Nupe of the kingdom Catan dotes on his two daughters so much that he decides the kingdom would be better off with more girls than boys, and he makes the following decree: All child-bearing couples must continue to bear children until they have a daughter!

But to avoid overpopulation, he makes an additional decree: All child-bearing couples will stop having children once they have a daughter! His subjects immediately begin following his orders.

After many years, what’s the expected ratio of girls to boys in Catan?

The likelihood of each baby born being a girl is, of course, 50 percent.

Ready for the solution? Click here to see if you’re right .

preview for Can You Build The Farmer's Fence? | SOLVE IT

Riddle #2: How Many Eggs Does This Hen Lay?

This problem is in honor of my dad, Harold Feiveson. It’s due to him that I love math puzzles, and this is one of the first problems (of many) that he gave me when I was growing up.

A hen and a half lays an egg and a half in a day and a half. How many eggs does one hen lay in one day?

Riddle #3: The Gold Chain Math Problem Is Deceptively Simple

Difficulty: moderate.

You’re rummaging around your great grandmother’s attic when you find five short chains each made of four gold links. It occurs to you that if you combined them all into one big loop of 20 links, you’d have an incredible necklace. So you bring it into a jeweler, who tells you the cost of making the necklace will be $10 for each gold link that she has to break and then reseal.

How much will it cost?

Riddle #4: Try to Solve This Pickleball Puzzle

Difficulty: 🚨hard🚨.

Kenny, Abby, and Ned got together for a round-robin pickleball tournament, where, as usual, the winner stays on after each game to play the person who sat out that game. At the end of their pickleball afternoon, Abby is exhausted, having played the last seven straight games. Kenny, who is less winded, tallies up the games played:

Kenny played eight games

Abby played 12 games

Ned played 14 games

Who won the fourth game against whom?

How many total games were played?

Riddle #5: Our Circuit Breaker Riddle Is Pure Evil. Sorry.

The circuit breaker box in your new house is in an inconvenient corner of your basement. To your chagrin, you discover none of the 100 circuit breakers is labeled, and you face the daunting prospect of matching each circuit breaker to its respective light. (Suppose each circuit breaker maps to only one light.)

To start with, you switch all 100 lights in the house to “on,” and then you head down to your basement to begin the onerous mapping process. On every trip to your basement, you can switch any number of circuit breakers on or off. You can then roam the hallways of your house to discover which lights are on and which are off.

What is the minimum number of trips you need to make to the basement to map every circuit breaker to every light?

The solution does not involve either switching on or off the light switches in your house or feeling how hot the lightbulbs are. You might want to try solving for the case of 10 unlabeled circuit breakers first.

Riddle #6: Two Trains. Two Grandmas. Can You Solve This Tricky Math Riddle?

Jesse’s two grandmothers want to see him every weekend, but they live on opposite sides of town. As a compromise, he tells them that every Sunday, he’ll head to the subway station nearest to his apartment at a random time of the day and will hop on the next train that arrives.

If it happens to be the train traveling north, he’ll visit his Grandma Erica uptown, and if it happens to be the train traveling south, he’ll visit his Grandma Cara downtown. Both of his grandmothers are okay with this plan, since they know both the northbound and southbound trains run every 20 minutes.

But after a few months of doing this, Grandma Cara complains that she sees him only one out of five Sundays. Jesse promises he’s indeed heading to the station at a random time each day. How can this be?

The trains always arrive at their scheduled times.

Riddle #7: Here’s a Really [email protected]*#ing Hard Math Problem About Ants

Max and Rose are ant siblings. They love to race each other, but always tie, since they actually crawl at the exact same speed. So they decide to create a race where one of them (hopefully) will win.

For this race, each of them will start at the bottom corner of a cuboid, and then crawl as fast as they can to reach a crumb at the opposite corner. The measurements of their cuboids are as pictured:

ant riddle

If they both take the shortest possible route to reach their crumb, who will reach their crumb first? (Don’t forget they’re ants, so of course they can climb anywhere on the edges or surface of the cuboid.)

Remember: Think outside the box.

Riddle #8: This Peppermint Patty Riddle Is Practically Impossible

You’re facing your friend, Caryn, in a “candy-off,” which works as follows: There’s a pile of 100 caramels and one peppermint patty. You and Caryn will go back and forth taking at least one and no more than five caramels from the candy pile in each turn. The person who removes the last caramel will also get the peppermint patty. And you love peppermint patties.

Suppose Caryn lets you decide who goes first. Who should you choose in order to make sure you win the peppermint patty?

First, solve for a pile of 10 caramels.

Riddle #9: Can You Solve the Great American Rail-Trail Riddle?

This problem was suggested by the physicist P. Jeffrey Ungar.

Finally, the Great American Rail-Trail across the whole country is complete! Go ahead, pat yourself on the back—you’ve just installed the longest handrail in the history of the world, with 4,000 miles from beginning to end. But just after the opening ceremony, your assistant reminds you that the metal you used for the handrail expands slightly in summer, so that its length will increase by one inch in total.

“Ha!” you say, “One inch in a 4,000 mile handrail? That’s nothing!” But … are you right?

Let’s suppose when the handrail expands, it buckles upward at its weakest point, which is in the center. How much higher will pedestrians in the middle of the country have to reach in summer to grab the handrail? That is, in the figure below, what is h ? (For the purposes of this question, ignore the curvature of the Earth and assume the trail is a straight line.)

great american rail trail riddle

Pythagoras is a fascinating historical figure.

Riddle #10: This Riddle Is Like an Especially Cruel SAT Problem. Can You Find the Answer?

Amanda lives with her teenage son, Matt, in the countryside—a car ride away from Matt’s school. Every afternoon, Amanda leaves the house at the same time, drives to the school at a constant speed, picks Matt up exactly when his chess club ends at 5 p.m., and then they immediately return home together at the same constant speed. But one day, Matt isn’t feeling well, so he leaves chess practice early and starts to head home on his portable scooter.

After Matt has been scooting for an hour, Amanda comes across him in her car (on her usual route to pick him up), and they return together, arriving home 40 minutes earlier than they usually do. How much chess practice did Matt miss?

Consider the case where Amanda meets Matt exactly as she’s leaving their house.

Riddle #11: Can You Get These 3 Movie Stars Across the River?

Three movie stars, Chloe, Lexa, and Jon, are filming a movie in the Amazon. They’re very famous and very high-maintenance, so their agents are always with them. One day, after filming a scene deep in the rainforest, the three actors and their agents decide to head back to home base by foot. Suddenly, they come to a large river.

On the riverbank, they find a small rowboat, but it’s only big enough to hold two of them at one time. The catch? None of the agents are comfortable leaving their movie star with any other agents if they’re not there as well. They don’t trust that the other agents won’t try to poach their star.

For example, Chloe’s agent is okay if Chloe and Lexa are alone in the boat or on one of the riverbanks, but definitely not okay if Lexa’s agent is also with them. So how can they all get across the river?

There isn’t just one way to solve this problem.

Riddle #12: This Ludicrously Hard Riddle Is Our Tribute to a Late Math Genius. Can You Figure It Out?

On April 11, John Horton Conway , a brilliant mathematician who had an intense and playful love of puzzles and games, died of complications from COVID-19. Conway is the inventor of one of my favorite legendary problems (not for the faint of heart) and, famously, the Game of Life . I created this problem in his honor.

Carol was creating a family tree, but had trouble tracking down her mother’s birthdate. The only clue she found was a letter written from her grandfather to her grandmother on the day her mother was born. Unfortunately, some of the characters were smudged out, represented here with a “___” . (The length of the line does not reflect the number of smudged characters.)

“Dear Virginia,

Little did I know when I headed to work this Monday morning, that by evening we would have a beautiful baby girl. And on our wedding anniversary, no less! It makes me think back to that incredible weekend day, J___ 27th, 19___ , when we first shared our vow to create a family together, and, well, here we are! Happy eighth anniversary, my love.

Love, Edwin”

The question: When was Carol’s mother born?

This problem is inspired by Conway’s Doomsday Rule .

Riddle #13: To Solve This Twisty Math Riddle, You Just Need One Belt and One Earth

Imagine you have a very long belt. Well, extremely long, really … in fact, it’s just long enough that it can wrap snugly around the circumference of our entire planet. (For the sake of simplicity, let’s suppose Earth is perfectly round, with no mountains, oceans, or other barriers in the way of the belt.)

Naturally, you’re very proud of your belt. But then your brother, Peter, shows up—and to your disgruntlement, he produces a belt that’s just a bit longer than yours. He brags his belt is longer by exactly his height: 6 feet.

If Peter were also to wrap his belt around the circumference of Earth, how far above the surface could he suspend the belt if he pulled it tautly and uniformly?

Earth’s circumference is about 25,000 miles, or 130 million feet … but you don’t need to know that to solve this problem.

Riddle #14: This Elbow Tapping Riddle Is Diabolical. Good Luck Solving It.

In some future time, when the shelter-in-place bans are lifted, a married couple, Florian and Julia, head over to a bar to celebrate their newfound freedom.

They find four other couples there who had the same idea.

Eager for social contact, every person in the five couples enthusiastically taps elbows (the new handshake) with each person they haven’t yet met .

It actually turns out many of the people had known each other prior, so when Julia asks everyone how many elbows they each tapped, she remarkably gets nine different answers!

The question: How many elbows did Florian tap?

What nine answers did Julia hear?

Riddle #15: You'll Need a Drink After Trying to Solve This Whisky Riddle

Alan and Claire live by the old Scottish saying, “Never have whisky without water, nor water without whisky!” So one day, when Alan has in front of him a glass of whisky, and Claire has in front of her a same-sized glass of water, Alan takes a spoonful of his whisky and puts it in Claire’s water. Claire stirs her whisky-tinted water, and then puts a spoonful of this mixture back into Alan’s whisky to make sure they have exactly the same amount to drink.

So: Is there more water in Alan’s whisky, or more whisky in Claire’s water? And does it matter how well Claire stirred?

The size of the spoon does not matter.

Riddle #16: The Doodle Problem Is a Lot Harder Than It Looks. Can You Solve It?

This week’s riddle is relatively simple—but sinister all the same.

The question: Can you make 100 by interspersing any number of pluses and minuses within the string of digits 9 8 7 6 5 4 3 2 1? You can’t change the order of the digits! So what’s the least number of pluses and minuses needed to make 100?

Text, Font, Logo, Graphics, Smile,

For instance, 98 - 7 - 6 + 54 - 32 shows one way of interspersing pluses and minuses, but since it equals 107, it’s not a solution.

I call this a “doodle problem”: one that’s best worked on during meetings where you might be doodling otherwise.

You might want to start looking for solutions that use a total of seven pluses and minuses (although there are ways to use fewer).

Ready for the solution? Click here to see if you’re right.

Riddle #17: This Math Puzzle Stumped Every Scientist but One. Think You Can Crack It?

Difficulty: hard.

In honor of Freeman Dyson, the renowned physicist who died last month , here’s a legendary tale demonstrating his quick wit and incredible brain power.

One day, in a gathering of top scientists, one of them wondered out loud whether there exists an integer that you could exactly double by moving its last digit to its front. For instance, 265 would satisfy this if 526 were its exact double—which it isn’t.

After apparently just five seconds , Dyson responded, “Of course there is, but the smallest such number has 18 digits.”

This left some of the smartest scientists in the world puzzling over how he could have figured this out so quickly.

So given Dyson’s hint, what is the smallest such number?

My second grader has recently learned how to add a 3-digit number to itself using the classic vertical method:

Font, Text, Calligraphy, Line, Art, Writing,

18-digit numbers, of course, can be added in the same way.

Riddle #18: Figure Out What’s on Her Forehead

Cecilia loves testing the logic of her very logical friends Jaya, Julian, and Levi, so she announces:

“I’ll write a positive number on each of your foreheads. None of the numbers are the same, and two of the numbers add up to the third.”

She scribbles the numbers on their heads, then turns to Jaya and asks her what her number is. Jaya sees Julian has 20 on his forehead, and Levi has 30 on his. She thinks for a moment and then says, “I don’t know what my number is.” Julian pipes in, “I also don’t know my number,” and then Levi exclaims, “Me neither!” Cecilia gleefully says, “I’ve finally stumped you guys!”

“Not so fast!” Jaya says. “Now I know my number!”

What is Jaya’s number?

Jaya could be one of two numbers, but only one of those numbers would lead to Julian and Levi both not knowing their numbers. Why?

Riddle #19: Can You Get Keanu Reeves Elected As President?

It’s 2024, and there are five candidates running in the democratic primary: Taylor Swift, Oprah Winfrey, Mark Cuban, Keanu Reeves, and Dwayne Johnson. (Hey, it could happen.) As usual, the first primary is in Iowa.

In an effort to overcome its embarrassment after the 2020 caucus debacle , the Iowa Democratic Party has just announced a new, foolproof way of finding the best candidate: there will be four consecutive elections.

First, candidate 1 will run against candidate 2. Next, the winner of that will run against candidate 3, then that winner will run against candidate 4, and finally the winner of that election will run against the final candidate. By the transitive property, the winner of this last election must be the best candidate ... so says the Iowa Democratic Party.

Candidate Keanu has been feeling pretty low, as he knows he is ranked near the bottom by most voters, and at the top by none. In fact, he knows the Iowa population is divided into five equal groups, and that their preferences are as follows:

Text, Font, Line, Organism, Document, Number, Handwriting, Calligraphy, Smile, Art,

Keanu is childhood friends with Bill S. Preston, Esq., the new head of the Iowa Democratic Party. Preston, confident that the order of the candidates doesn’t matter for the outcome, tells Keanu he can choose the voting order of the candidates.

So what order should Keanu choose?

How would Keanu fare in one-to-one races against each candidate?

Riddle #20: Who Opened All These Damn Lockers?

There are 100 lockers that line the main hallway of Chelm High School. Every night, the school principal makes sure all the lockers are closed so that there will be an orderly start to the next day. One day, 100 mischievous students decide that they will play a prank.

The students all meet before school starts and line up. The first student then walks down the hallway, and opens every locker. The next student follows by closing every other locker (starting at the second locker). Student 3 then goes to every third locker (starting with the third) and opens it if it’s closed, and closes it if it’s open. Student 4 follows by opening every fourth locker if it’s closed and closing it if it’s open. This goes on and on until Student 100 finally goes to the hundredth locker. When the principal arrives later in the morning, which lockers does she find open?

Make sure you pay attention to all of the factors.

Headshot of Laura Feiveson

Laura Feiveson is an economist for the government, a storyteller, and a lifelong enthusiast of math puzzles.  She lives in Washington, DC with her husband and two daughters. 

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9 Tricky Puzzles to Test Your Problem Solving Skills

Christopher McFadden

Would you like to exercise your brain today? Then, here are 9 tricky puzzles to give your grey-matter a good workout .

We have provided the solutions as links at the end of each puzzle below, in case you want to have a go before checking your answers. Enjoy, and good luck!

RELATED: THIS PUZZLE FAN SOLVES A RUBIK'S CUBE MADE OF BURNING CANDLES

What are some difficult logical puzzles that will sharpen your mind?

So, without further ado, here are some examples of difficult puzzles that will certainly hone your mental acuity. Trust us when we say this list is far from exhaustive and is in no particular order.

1. The riddle of the farmer

hard puzzles chicken fox corn boat

This first puzzle is a bit of a classic. Just suppose you had a farmer who needs to transport a fox, a chicken and some corn across a river.

He only has a small boat that can only carry him and one of them with him per crossing. The farmer needs to get all three items across the river in one piece.

But there is a problem. He can't leave the fox and chicken alone as the fox will eat the chicken. Likewise, he can't leave the chicken with the corn as the chicken will munch down on the corn.

So, can you figure out how the farmer could solve this problem?

Here is the solution if you want to test your workings. 

2. The rope bridge at night problem

hard puzzles ropebridge

This next puzzle is another head-scratcher. Suppose there are four people trying to cross a rather dodgy rope bridge in the middle of the night.

Only two of them can cross it any one time and they only have a single flashlight between them. For this reason, one person of each pair must return to help the others get across.

But time is limited; they are being chased and need to get across within 17 minutes total. Sounds simple enough, except each person can only cross the bridge at a certain rate.

One person takes 1 minute to cross the bridge. The second takes 2 minutes , the third 5 and the last person 10 minutes .

Each pair can only cross as fast as the slowest member of the pair. How can they all cross the bridge in time?

Here is the solution if you want to see if you were right. 

3. The burning rope timer problem

hard puzzles burning rope

Let's suppose you needed to measure a time of exactly 45 minutes but only had a couple of old ropes coated in oil and a lighter. You know that each rope takes exactly 1 hour to burn all the way through.

But, the ropes do not burn at a uniform rate with spots that will burn a little faster than others. Whatever the case, and location of these slow and fast burn spots, the entire rope still burns up in exactly an hour.

You can burn the ropes at either end or at multiple points at the same time. How would you measure exactly three-quarters of an hour?

Here is the solution . 

4. The heads or tails coin problem

hard puzzles table of coins

Just suppose you are sat at a table strewn with hundreds or thousands of coins . You are blindfolded, so you cannot see the coins, and you don't know how many there are.

You are told that 20 of the coins are tails-side up while the rest are heads up. You can move the coins and flip them over as much as you want but you will never be able to see what you doing. 

While you can feel the coins, you are unable to determine which side is which. 

How then, would you separate the coins into two piles that have the same number of tails-side-up coins? Remember the number of coins per pile does not need to be the same. 

Here is the solution , if you are curious. 

5. The classic water jug problem

hard puzzles water measure

Here is another classic puzzle that will sharpen your mind. Let's suppose you need to measure out exactly 4 liters of water.

But, of course, you have a problem. You have two containers each 3 and 5 liters in volume respectively. 

Each container has no other marking except for the fact that it only provides its known volume. Using a running tap to fill them how would you measure out exactly 4 liters ?

Here is the solution , if you want to check your answer.

6. The riddle of the Gods

hard puzzles gods

Touted as one of the hardest puzzles to solve ever , this one is certainly a fun challenge. Let's suppose we have three gods called, in no particular order, "True", "False" and "Random".

We don't know which is which, so, for now, we will label them A, B, and C respectively.

"True" always tells the truth. "False" always lies, and "Random" lies or tells the truth at random.

You are tasked with identifying which one is which by asking three yes-no questions. Also, you can only ask one god one question at any one time.

But it's a little more complex than that. Each god understands English but will only answer in their own language as "da" or "ja" -- but you can't understand if the answers are in the affirmative or not.

How would you solve this? Here is the solution . 

7. Escape from the field

hard puzzles dog

Let's suppose you have been placed in a circular field of unknown radius R. The field has a low fence around it.

Attached to the wire fence is a large, angry, sharp-fanged and hungry dog who loves nothing more than eating human flesh. You can run at a speed v, while the dog can run exactly 4-times as fast as you.

The dog, as it is attached to the fence can only travel around the perimeter. How would you escape from the field in one piece?

8. The apples and oranges puzzle

hard puzzles apples and oranges

Here is another annoying problem that needs solving . Let's suppose you work in a fruit factory that boxes apples and oranges. 

One day, the labeling machine goes haywire and incorrectly labels the crates of fruit. Your coworker decides to have a bit of fun and pulls out three crates of fruit and tells you that one has just oranges in it, the second just apples, and the third a mixture of the two.

One of the crates is labeled "O" for oranges, another "A" for apples and the third "A+O" for apples and oranges. But the labels lie.

You can pick one crate and your coworker will pull a single fruit from it to show you. You are only able to do this once. 

How can you figure out which crate actually has only oranges, only apples and a mixture of the two? Here is the solution . 

9. The mystery hat puzzle

hard puzzles hats

And finally, let suppose you have a dark closet with five hats in it. There are three blue, and two red ones. 

Three men go into the closet and each selects a hat at random in the dark and places it on their head. Once outside the closet, each man is unable to tell what color their own hat is. 

The first man looks at the others and says "I cannot tell what color my hat is!". The second hears this, looks at the other two and declares "I cannot tell what color my hat is either!".

The third man, who is blind, confidently declares "I know exactly what color mine is!". 

What color is his hat? Here is the solution .

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Problem Solving Games, Activities & Exercises for Adults

Here is our list of the best problem solving games, activities and exercises for adults.

Problem solving games are activities that require players to use critical thinking skills to solve puzzles. Example activities include escape rooms, Sudoku, and murder mysteries. The purpose of these exercises is to sharpen reasoning and decision-making skills in group settings and to do team building with employees.

These activities are a subset of remote team games , found in problem solving books , and are similar to team puzzles , team building brain teasers and team riddles .

problem-solving-games

This article contains:

Here we go!

List of problem solving games & activities

From word and number puzzles to role-playing games, here is a list of inexpensive and free problem solving games that help groups practice the art of critical thinking and compromise.

Sudoku is a popular puzzle game. The objective of this game is to fill each box of a 9×9 grid so that every row, column, and letter contains each number from one to nine. The puzzle makes a great team challenge. To play Sudoku on Zoom, screen share the game board. Then, turn on the annotation features. Using the add text functions, participants can fill in the numbers on the grid.

We made a starter puzzle you can use in your next meeting or virtual team bonding session:

Sudoku game-board

Here are more online Sudoku puzzles .

2. Art Heist

Art Heist banner

Art Heist is a fully facilitated virtual sleuthing game for team building. The event format is similar to a murder mystery, minus the murder. In this interactive tale, teams race to crack the case and figure out which fictional museum employee stole a priceless Van Gogh masterpiece. For 90 minutes, teams compete for clues in mini-games like spot the difference, jigsaw puzzles, riddles, and trivia. The more challenges won, the more hints received, and the easier to solve the case at the end of the game.

Learn more about Art Heist .

3. Crossword puzzles

Crossword puzzles are word games that ask players to fill in words based on clues. Words interconnect, and players must think critically about the surrounding words to select the right phrase for the space.

You can use an online crossword puzzle maker to create a custom puzzle. Here are a few themes you may want to consider:

Or, create a miscellaneous puzzle just for fun.

We made a sample puzzle you can use for your game:

free crossword template

To complete puzzles during online meetings, you can use the share screen function and add text through annotations.

Or, subscribers can play the New York Times’ daily crossword puzzle virtually . Dictionary.com also offers a free daily online crossword puzzle .

Check out more vocabulary games .

4. Online Escape Rooms

Escape rooms are timed games that get groups working together to solve puzzles. Traditionally, players enter a locked room and must complete all puzzles in an hour or two to unlock the door. However, groups can also play escape rooms online.

Digital escape rooms typically come in one of two forms: in a Zoom room and led by a host, or in a choose-your-own adventure format via Google Forms or websites. To play escape rooms virtually, enter a video meeting and follow the prompts, or screen share the Google Form and work out the puzzles together.

Check out our full list of online escape rooms .

5. Murder Mysteries

Murder in the Queen's Court banner

Murder Mysteries are story-based games that ask players to take on the roles of suspects or detectives while trying to identify a killer. These games often involve reading lines from a script, searching for clues, and occasionally solving puzzles to get hints.

These games make participants pay attention to conversations, analyze other characters’ behavior, and search for hidden meaning in the script. Players must use their powers of observation and logic to unravel the mystery.

Check out our list of Zoom murder mystery games .

6. Treasure Hunts

Treasure hunts are scavenger hunts with intention. While virtual scavenger hunts often ask players to collect random items, treasure hunts require participants to locate clues that lead to other prompts and hints. The game typically ends with players finding a treasure or solving a mystery, sometimes both.

The treasure hunt can have a specific theme such as secret agent missions or a hunt for pirate treasure, or you can run a more general hunt. Teammates can either compete simultaneously via Zoom call, or can play the hunt on an app individually and compete to beat each other’s scores.

Check out our list of treasure hunt apps .

7. War of the Wizards

War of the Wizards banner

War of the Wizards is a fully-facilitated 90 minute virtual team building event. Teams roleplay as minions of powerful wizards to vanquish forces of evil. A host guides the groups through a series of puzzles and mini-games in a quest-style adventure. Players must overcome obstacles through the power of teamwork and imagination. War of the Wizards is a test of diplomacy and resourcefulness, not to mention a way to geek out with remote colleagues.

Learn more about War of the Wizards .

8. Poem or story challenge

Most problem solving activities for groups revolve around science, math, and logic. Poem/story challenges rely on writing skills, and are sure to appeal to the language lovers on your team.

Each player receives a limited wordbank to use to create a story or poem. Then, players have a few minutes to craft their pieces. Afterwards, everyone reads out or screen shares their creations.

Here are a few word challenge activities you can do remotely:

These activities are suitable for teams and individual players.

9. Moral challenge

Some problems are ethical rather than factual. Moral judgment plays just as important a role in the decision-making process as technical prowess. Players can flex their moral problem-solving skills by tackling ethical dilemmas or social puzzles.

Here are some social problem solving games online:

To play these games, either download the apps, or pull up the website and then screen share the prompts. These games are best played when discussed as a group, because the more belief systems and opinions, the harder an issue is to resolve. These exercises provide practice for real-life conflict resolution.

You can find similar challenges on our list of online personality tests .

10. Frostbite

Frostbite is a group game that hones team leaders’ communication skills while sharpening teammates’ listening and cooperation skills. The premise behind the game is that a group of explorers gets caught in a snowstorm and must build a shelter. Frostbite has paralyzed the leaders’ hands and snow-blinded the rest of the team. The leader must give the team instructions to build a tent that can resist arctic winds.

To play Frostbite, each teammate wears a blindfold. Then, the leader gives directions. Once the structures are complete, players turn on a fan to test whether tents can withstand the wind.

Frostbite is usually an in-person game, however you can also play virtually. In the remote version of the game, teammates construct tents out of cards and tape, while the leader surveys the scene on screen.

This exercise demonstrates the challenges of leading remotely, as teams need to operate with minimal oversight or supervisor observation. Therefore, instructions need to be clear and direct to be effective.

Check out more team building games .

11. Virtual Hackathons

Hackathons are events where participants have a set amount of time to design and pitch a new product or solution. This type of event originated in the programming world and is often used to create new apps, however you can apply the game to any industry or school subject.

Virtual hackathons are online versions of the event. Teams enter the competition, then work with each other via virtual meeting software or remote work communication platforms to design the solution. At the end of the competition, teams pitch ideas to a panel of judges and a winner is decided.

To run a virtual hackathon, first announce the theme of the event and collect sign-ups. So that no teams work ahead, hint at the general idea of the issue, and only explain the precise problem when the event begins. Then, give teams anywhere from a few hours to a few days to complete the project.

Discover more virtual hackathon ideas .

12. Improv games

Improv games are excellent problem solving activities. These exercises force participants to think and respond quickly to keep scenes moving in a logical and entertaining way.

Here are some good problem solving improv games:

Banned words : Performers cannot say certain words. Scene partners will conceive of situations that encourage the actors to use those words, and the actors must find alternatives, such as using synonyms or taking the scene in a new direction.

Scenes from a chat : Audience gives a suggestion for a scene, and players act the scene out. Though it’s a fictional and often ridiculous scenario, actors must react to the situation and solve the problem in order for the scene to end.

Miracle cure : Miracle cure is a quick-moving exercise that follows a simple format. One player declares, “I have a problem.” Another player responds, “I have a….[random object.]” The first player then replies, “great! I can use the [random object] to….” and describes how they will solve the problem.

Check out more problem-solving improv games .

13. Spaghetti Tower

The spaghetti tower is a classic team building game. Participants gather uncooked spaghetti and marshmallows, and must construct the tallest freestanding tower.

During the in-person version, players must construct one tall freestanding tower. However, for the virtual version of the game, players construct individual towers. You can send groups to breakout rooms for the build, then reconvene in the main room for judging. Teams are judged on three main factors: number of towers, height, and uniformity.

This version of the game not only tests the structural integrity of the tower, but also consistency and quality control. This exercise teaches teams to align and collaborate remotely, and produce a consistent product even when far apart.

14. What Would You Do?

What Would You Do? is a simple situational game that challenges participants to react to different circumstances. To play this game, read prompts one by one, and then ask participants to respond with gameplans. You can use the polling or raise hand feature to vote for the best option.

Here are some problem solving scenarios for adults or kids to use in the game:

For similar dilemmas, check out this list of Would You Rather? questions.

15. Desert Island Survival

Desert Island Survival is a game that challenges players to prioritize. The premise is that players have been stranded on an island, and must decide what order to perform survival steps.

Here are the possible actions:

All group members must agree on the order of the steps. Players should explain the reasoning for the order of each step while ranking the actions.

Another version of the game involves players receiving a list of 15 to 20 items, and selecting five or so to bring to the island. You can also vary the location of the game, substituting remote islands for destinations like outer space or the distant past.

16. Choose Your Own Adventure

Choose Your Own Adventure stories enable readers to determine the outcome of the story by making decisions. Each action has a consequence that takes the tale in a different direction. Participants can try to guess how the story may unfold by talking through the different choices. When completing the activity in a group setting, the majority of the team must agree on an action before moving forward in the story.

There are a few ways to facilitate these activities online:

Whichever way you choose to do the exercise, you can use the screen share feature in your virtual meeting software so that listeners can more easily follow along.

17. MacGyver

MacGyver is a show where the hero escapes sticky situations by improvising tools out of unlikely materials. For example, in one episode the hero makes a telescope out of a newspaper, magnifying lens, and a watch crystal.

To play MacGyver, you can either list three to five objects participants can use, or challenge players to use items that are within arms reach.

Simply state a desired end result, such as “a way to open a locked door,” or “a getaway vehicle,” and then ask teams to explain what they will build and how they will build it. To make the activity more collaborative, you can give teams five or ten minutes in breakout rooms to strategize and design a prototype.

18. Dungeons & Dragons

Dungeons & Dragons is a roleplaying game where players pretend to be magical figures and creatures. One player serves as the dungeon master, who guides the game, while the other players pick characters and make decisions to move the story forward. Upon choosing a course of action, players roll a twenty-sided die to determine whether or not the plan succeeds. The game is story-based, the possibilities are nearly limitless, and truly creative problem solving options arise. Also, since gameplay is mostly verbal, Dungeons & Dragons is an easy activity to do over Zoom.

Here are the basic rules for Dungeons & Dragons .

19. Pandemic

Pandemic is a game that pits players against the forces of nature in a race to contain and control disease outbreaks. At the beginning of the game, each player receives a role such as containment specialist or operations expert. Participants must carry out the duties of their roles by choosing appropriate actions. Pandemic is a great game for groups because each team member has a clear part to play, and players must collaborate and work together instead of competing against each other.

To play the game online, you can use a Pandemic game app , or talk through the exercise while one attendee moves and displays pieces on the board.

Note: The subject of this game might hit too close to home for some players, considering recent history. You can find games with similar mechanics that deal with different subject matter, such as Forbidden Island.

Check out more team building board games .

20. Model UN

Model UN is one of the best virtual problem solving activities for students. This exercise casts participants in the role of international diplomats who must negotiate to solve realistic problems. Each player assumes the role of a country ambassador and must form alliances and propose solutions to solve crises.

Here are some sample Model UN scenarios:

Depending on the size of the group, participants either take on the part of an entire government of a country, or play a certain role within the government. To carry out the activity on Zoom, players can take turns giving speeches, message other countries privately via the chat, meet in breakout rooms to form alliances or have more intimate discussions, and use the polling feature to vote on propositions.

If politics does not resonate with your group, then you can alter the exercise by applying the same activity structure to a different theme, such as the Justice League, movie characters, business board members, or reality TV stars.

The main purpose of the exercise is to research, talk through problems, and compromise. As long as these elements are present, then the specifics of the setup do not matter.

There are many types of problem solving activities for adults. You can do online problem solving games, which require a different skill set than in-person problem solving. For instance, communication must be much clearer and more abundant when group members are far apart and unable to demonstrate or pick up physical cues.

Though many problem solving games include props and in-person elements, there are many games you can play together online. These exercises work well as educational tools as well as team bonding accelerators. Upon completion, participants are likely to feel a sense of accomplishment and increased confidence. These games are also great practice for real life conflict resolution, creative thinking and team building.

Next check out this list of connection games , and this post with conflict resolution games .

We also have a list of the best decision making books and a list of team building problems for work .

FAQ: Problem solving activities

Here are common answers to questions about group problem solving activities.

What are problem solving games?

Problem solving games are challenges that ask players to think critically and use logic to overcome issues or answer riddles. Examples include sudoku, murder mysteries, and spaghetti towers. These games are also known as “problem solving exercises”, “problem and solution games” and “group problem solving activities.”

What are the best problem solving games for groups?

The best problem solving games for groups include online escape rooms, moral challenges, and improv games.

What are some good problem solving team building activities for students?

Some good problem solving activities for students include crossword puzzles, choose your own adventure stories, and model UN.

How do you play problem solving games online?

The best way to play problem solving games online is to join a video call meeting to talk through the issue. Using the screen sharing and digital whiteboard features helps participants visualize the problem more clearly. Breakout rooms give teams the chance to discuss the issue more intimately.

Author avatar

Author: Angela Robinson

Content Expert at teambuilding.com. Team building content expert. Angela has a Master of Fine Arts in Creative Writing and worked as a community manager with Yelp to plan events for businesses.

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Riddles and Puzzles

Brain Teasers, Riddles, Trivia, Games and more...

Braingle is a place to solve puzzles, brush up on your trivia, play games and give your brain a workout. Get ready to have your brain tangled!

With over 15,000 brain teasers, riddles, logic problems and mind puzzles submitted and ranked by users like you, Braingle has the largest collection anywhere on the internet!

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An "a" pyramid . . ..

Braingle's Trivia section contains over 5,000 fun and interesting quizzes on a wide variety of topics. Are you an expert on something? Create your own quiz for other people to test their knowledge?

Stay mentally fit with these daily brain exercises. You will learn how to flex your mind, improve your creativity and boost your memory. Try to do some Mentalrobics every single day!

All of our unique online games are free to play and several of them are multiplayer games where you can challenge other members of the Braingle gaming community.

We have an active community of smart people who participate in all areas of the website. Chat with your friends, post comments, and earn points to climb the ladders .

Braingle at a Glance

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Need a bigger challenge? Try one of our exciting puzzle experiences!

Learn about encryption, cryptography, codes and ciphers.

An encyclopedia of all types of written, spoken and mechanical puzzles.

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When you are trying to memorize something, flash cards can be a very effective way to improve your memory.

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Learn more about how intelligence is measured and calculate your own personal score.

Play popular puzzle games like Sudoku or Wordsearch right in your web browser.

Free strategy games to play online. Compare your score to other Brainglers.

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As a Braingle user you can submit riddles, rate puzzles, make quizzes, keep track of brain teasers and play some of our exclusive games. With our active community frequently adding new brain teaser and quizzes your brain will never get bored!

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Brain Games & Riddles To Play In The Car

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Car trips can seem awfully long and boring if there’s nothing to do, and not all cars have room for board games or movie players. However, did you know that there’s a special kind of game that can be played anywhere? All you need is the power of your own brain and a little bit of imagination. This kind of game will make you smarter, but it can also make you laugh, too!

Brain Games

Brain games are special kinds of games that exercise your mind while you play. In fact, you’ve probably already played brain games without realizing it. One of the most popular brain games is called a matching game. This is when a deck of cards containing pairs of images or shapes are spread out face down in front of the player, so only the backs of the cards are visible. The object of the game is to flip over two cards at a time and try to find the matching images. There’s a catch, though! If the two cards that were flipped over don’t match, they have to be put face down again, and it’s up to the player to remember what images were on them.

There are other brain games that can be played without any cards at all, making them perfect for car trips. Another memory game is a game where one player sets a certain rhythm, either by clapping, or by saying an alphabet word, and then the other player has to remember the first thing and add to it. For example, Player A might say, “Apple.” Player B would then say, “Apple, banana.” When the play goes back to Player A, they have to remember the first two words of the chain and then add on another word, like “coconut.” You can make a memory game be about whatever you like. The main challenge is to try and remember everything correctly. These aren’t the only kind of brain games out there, either. Many popular board games are actually brain games because players have to use their memory or problem-solving skills to win.

Brain-Teasers and Riddles

While brain games are designed to help train your brain to recognize and track tricky patterns, brain-teasers and riddles are meant to help you think critically. The great mathematician Archimedes used brain-teasers to help his students think better. Some brain-teasers are still based on math and are solved like a math puzzle, but brain-teasers can also be funny jokes. You can play brain-teasers with your siblings or your parents to help make a dull car ride more interesting. You can come up with your own brain-teasers, or you can find some online.

Riddles are a special kind of brain-teaser that have a double meaning. For example, a riddle might ask, “What has one eye but cannot see?” The answer, “a needle,” is a play on the fact that the thread hole in a needle is called an “eye.” Riddles have been popular throughout human history. One of the most famous riddles, “The Riddle of the Sphinx,” shows up in an ancient Greek legend. Riddles popped up throughout the Bronze Age and the Middle Ages, and they are still enjoyed today.

Another fun version of a brain-teaser is called a code. There are many different kinds of codes, and figuring them out is like decoding a secret message. The answer may not be obvious right away, but just like with brain games and brain-teasers, a code can be solved with a little careful thinking. Some codes use one letter of the alphabet to stand for another one, and these are called substitution codes. Pictographic codes use pictures to represent letters. You can even make up your own code by assigning a certain picture or drawing to each letter of the alphabet. No matter which kind of brain-teaser or riddle you choose, they’re bound to make any car trip into a fun one!

14 brainteasers and riddles only smart people can solve

Visit INSIDER's homepage for more stories.

Who doesn't love the feeling of satisfaction you get after you solve a brain teaser ? While intellectual jokes  can be understood in seconds, riddles take a bit longer to unpack, which makes the payoff even better.

INSIDER combed through Reddit to compile a list of  challenging logic problems , word puzzles, and more .

You'll see the answers to most of these brain teasers in the caption below each picture. Scroll down slowly to avoid seeing the solution too soon. Don't worry — we've also included explanations in case you get stumped on any of these puzzles.

Here are 14 riddles that may take you some time to solve:

1. If you have me, you want to share me. If you share me, you don't have me. What am I?

riddles problem solving games

Source: RhinoBarbarian, Reddit

2. You're escaping a labyrinth, and there are three doors in front of you. The door on the left leads to a raging inferno. The door in the center leads to a deadly assassin. The door on the right leads to a lion that hasn't eaten in three months. Which door do you choose?

riddles problem solving games

Explanation:  The lion would be dead after not eating for three months.

Source :  AntmanIV, Reddit

3. If I am holding a bee, what do I have in my eye?

riddles problem solving games

Explanation:  This riddle is a play on the proverb, "Beauty is in the eye of the beholder." In this case, you are the "bee-holder." Thus, beauty is in your eye.

Source : lipwiggler, Reddit

4. An old man dies, leaving behind two sons. In his will, he orders his sons to race with their horses, and the one with the slower horse will receive his inheritance. The two sons race, but since they're both holding their horses back, they go to a wise man and ask him what they should do. After that, the brothers race again — this time at full speed. What did the wise man tell them?

riddles problem solving games

Explanation:  After they switch horses, whoever wins the race will get the inheritance because they still technically own the losing (i.e., slower) horse.

Source:  qweiopasd, Reddit

5. Turn me on my side and I am everything. Cut me in half and I am nothing. What am I?

riddles problem solving games

Explanation:  On its side, the number 8 looks like an infinity symbol. Cut in half, the number 8 becomes two zeros.

Source: romz7, Reddit

6. A farmer needs to take a fox, a chicken, and a sack of grain across a river. The only way across the river is by a small boat, which can only hold the farmer and one of the three items. Left unsupervised, the chicken will eat the grain, and the fox will eat the chicken. However, the fox won't try to eat the grain, and neither the fox nor the chicken will wander off. How does the farmer get everything across the river?

riddles problem solving games

Explanation:  The farmer must follow these steps.

1. Take the chicken across the river. 2. Come back with an empty boat. 3. Take the grain across the river. 4. Bring the chicken back. 5. Take the fox across the river. 6. Come back with an empty boat. 7. Take the chicken across the river.

Source: someguyinworld, Reddit

7. If you have a 7-minute hourglass and an 11-minute hourglass, how can you boil an egg in exactly 15 minutes?

riddles problem solving games

Explanation:  To boil the egg in exactly 15 minutes, follow these steps.

1. Start both hourglasses as you start boiling the egg. 2. After the 7-minute hourglass runs out, turn it to start it again. 3. Four minutes later, when the 11-minute hourglass runs out, turn the 7-minute hourglass again. 4. Wait for the 7-minute hourglass to run out, which will take another four minutes and get you to exactly 15 minutes of boiling time.

Source:  DarylHannahMontana, Reddit

8. You are walking down a road and come to a fork. One path leads to certain death; the other leads to eternal happiness. You don't know which is which. In the middle of the fork, you come across two brothers who know which road is which. One brother always tells the truth and the other always lies. You can only ask them one question. How would you determine which road to take?

riddles problem solving games

Explanation:  Let's say the path on the right leads to eternal happiness. After you ask your question, both brothers will tell you the exact same thing: " He would say the left path leads to eternal happiness."

As Reddit user OnscreenForecaster explained, "In either case ... you would pick the opposite of what they both say because one is telling the truth about it being a lie, and one is lying about it being the truth."

Source:  SneeKeeFahk, Reddit

9. What is next in this sequence of numbers: 1, 11, 21, 1211, 111221, 312211, ______?

riddles problem solving games

Explanation:  Each sequence of numbers is a verbal representation of the sequence before it. Thus, starting with 1, the next sequence would be "one one," or "11." That sequence is followed by "two one," or "21," and so on and so forth.

Still confused? Here's a good explanation by Reddit user hankthetank921 :

T he first number is just ONE (amount) "1" (0-9 numeral). So if you say there's ONE "1" (seriously just say it aloud) the next number would be an 11. Then there are TWO "1's", creating 21. Then ONE "2" and ONE "1" which creates 1,211. Then ONE "1", ONE "2", and TWO "1's" creating 111,221 ... and so on.

Source: arsenal7777, Reddit

10. Four people arrive at a river with a narrow bridge that can only hold two people at a time. It's nighttime and they have one torch that has to be used when crossing the bridge. Person A can cross the bridge in one minute, B in two minutes, C in five minutes, and D in eight minutes. When two people cross the bridge together, they must move at the slower person's pace. Can they all get across the bridge in 15 minutes or less?

riddles problem solving games

Explanation:  The group of four must follow these steps.

1. First, A and B cross the bridge and A brings the light back. This takes 3 minutes. 2. Next, C and D cross and B brings the light back. This takes another 10 minutes. 3. Finally, A and B cross again. This takes another 2 minutes.

Source:  bananaslayer100, Reddit

11. A rebus is a pictogram that represents a word, phrase, or saying. For example, "Ci ii" represents "See eye to eye." What word or phrase does the following rebus represent: O_ER_T_O_?

riddles problem solving games

Explanation :  The letters missing in O_ER _T _O_ (OPERATION) spell out PAIN. Thus, "pain-less" operation.

Source:  kjivxx, Reddit

12. During a recent census, a man told the census taker that he had three children. When asked their ages, he replied, "The product of their ages is 72. The sum of their ages is the same as my house number." The census taker ran to the man's front door and looked at the house number. "I still can't tell," she complained. The man replied, "Oh that's right, I forgot to tell you that the oldest one likes chocolate pudding." The census taker then promptly wrote down the ages of the three children. How old are they?

riddles problem solving games

Explanation:  As Reddit users  TT1103 and RedditRage explained, the key to this brain teaser is that the census taker looks at the house number. In other words, she knows the sum of the children's ages.

However, at that point of the riddle, she still can't tell how old the man's children are. Therefore, she has to be stuck between multiple possibilities. To narrow it down further, only two sets of numbers that multiply to 72 share the same sum: (2,6,6) and (3,3,8).

After the man reveals that his oldest   child likes chocolate pudding, however, the census taker can differentiate between the two options. That is, only the latter of those two sets has a distinct "oldest" child.

Source: mikebrown_pelican, Reddit

13. You're in a dark room with a candle, a wood stove, and a gas lamp. You only have one match, so what do you light first?

riddles problem solving games

Source: notarobot45, Reddit

14. There are five bags of gold that all look identical, and each has ten gold pieces in it. One of the five bags has fake gold in it. The real gold, fake gold, and all five bags are identical in every way, except the pieces of fake gold each weigh 1.1 grams, and the real gold pieces each weigh 1 gram. You have a perfectly accurate digital gram scale and can use it only once. How do you determine which bag has the fake gold?

riddles problem solving games

Explanation:  Take one gold piece from the first bag, two from the second bag, three from the third bag, four from the fourth bag, and five from the fifth bag. If the weight on the scale ends in .1, then you know the first bag has the fake gold. If the weight on the scale ends in .2, then the second bag has the fake gold, and so on and so forth.

Source: dankability, Reddit

Riddles for kids with answers

Have you already played riddles with Pocoyo's riddles for kids? It's a fun hobby for the little ones and also for the adults because, besides having a great time, you'll challenge your brain to solve different riddles with answers.

Types of riddles for kids by categories.

Easy riddles, hard riddles, short riddles, long riddles, really hard riddles, logic riddles, funny riddles, fruit, vegetables and food riddles, what animal am i, math riddles, who am i quiz, nature riddles, famous riddles, number riddles, the best guessing games and riddles for kids, solve riddles for preschool and elementary school children.

We must encourage the mind to keep working for as long as possible because of its proven long-term benefits. Riddle games are educational resources that are transmitted by word of mouth from time immemorial. Their purpose is, through a description of greater or lesser extent, to guess the word we are looking for. Being a highly demanded resource for leisure time, we have gathered here in this section the best collection of riddles for elementary school children. You'll find clues and the correct solutions to the brain teasers for kids for you to check if you have hit the nail on the head with your answers. There are a lot of riddles with answers with different extensions. Short riddles and long riddles for you to choose from, depending on the time you have. We have also gathered riddles by levels of difficulty for you to decide which ones to tackle first. By themes, you will find , among many other categories, animal riddles for kids, vegetables and fruit riddles, natural elements or characters, so that you can enjoy them to the fullest. We recommend you start by putting into practice easy riddles for kids and those on the subjects that you control the most and then go on tackling the difficult riddles with answers and those dealing with topics you are less acquainted with. This way, your brain will learn progressively. Once you have solved the game, you can learn the riddles for children by heart and play with your friends or family in meetings or whenever you want. That way you'll challenge them too and it will be much more fun. If you play the game within a community, it is much better because you can compete with more people. Do you think they'll be able to find the answer sooner than you? It will be exciting to find out. Come on, train yourself first and then challenge as many friends as you want. Solve list of riddles and you'll get many benefits; it will allow you to expand your vocabulary, develop cognitive capacity, encourage imagination, facilitate a greater association of ideas and many other things, which you'll discover as the fun also grows with these unique puns. The riddles for kids with answers that we offer you are fantastic. Once you complete the riddler riddles we recommend you discover other content such as tongue twisters, stories, games or crafts that will also provide you with a lot of entertainment. Have we convinced you? Do you feel like trying to solve riddles for kids? Come on, let yourself be surprised; choose a section to start and visit it now. It's time to enjoy!

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