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Hard Riddles

Are you looking for a real challenge? Did you find our other riddle categories too easy? Then step right up to our most challenging and difficult riddles to solve, all in this category.

The Word in the Matches
Riddle:
Can you make a word out of these two rows of matches without moving them?
The Word in the Matches
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The Shadows of Graphs
Riddle:
Look carefully at these graphs, can you find the actual height of the red bar?
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The Murderous Family
Riddle:
One evening there was a murder in a house where there lived a married couple with their 2 children - their son and daughter. One of these four people murdered one of the others. One of the members of the family witnessed the crime. The other one helped the murderer. These are the things we know for sure: 1. The witness and the one who helped the murderer were not of the same gender. 2. The oldest person and the witness were not of the same gender. 3. The youngest person and the victim were not of the same gender. 4. The one who helped the murderer was older than the victim. 5. The father was the oldest member of the family. 6. The murderer was not the youngest member of the family. Who was the murderer?
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Old Man Murder
Riddle:
An old man, Dave, lives alone in a flat. Because of his age , he is not able to move comfortably and hence most of the things used to be delivered to his house. On Friday while delivering the mail, the postman feels something suspicious in the flat and try to look inside through the key hole and he saw the bloody body of the old man. Homicide arrived the scene. On the outside of flat, they find two bottles of warm milk, Tuesday newspaper, some unopened mails and some gifts. Homicide waste no time and find the murderer almost immediately. How did they do it, and who was the murderer?
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The Four Jugs Riddle
Riddle:
In a recreational activity, you are given four different jars of 2 liters, 4 liters, 6 liters and 8 liters respectively with an unlimited water supply. Then you are asked to measure exactly 5 liters of water using them. How will you do it?
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The 15 Minutes Recipe
Riddle:
A recipe requires 15 minutes to cook. You have a 7 minutes hourglass and an 11 minutes hourglass with you. How will you measure 15 minutes using them?
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Giving Away Vegetable Oil
Riddle:
You are distributing vegetable oil. There are 21 bottles in total out of which 7 are full, 7 half empty and 7 empty. The oils has to be distributed among three people. How will you distribute so that each person gets equal number of bottles and the same quantity of oil?
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How Many Triangles?
Riddle:
How many triangles are in this image?
How Many Triangles?
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The Car Thief
Riddle:
A car thief, who had managed to evade the authorities in the past, unknowingly took the automobile that belonged to Detective Anderson. The detective wasted no time and spared no effort in discovering and carefully examining the available clues. He was able to identify four suspects with certainty that one of them was the culprit. The four make the statements below. From twelve of total statements, six are true and six false. Suspect A: 1. C and I have met many times before today. 2. B is guilty. 3. The car thief did not know it was the Detective's car. Suspect B: 1. D did not do it. 2. D's third statement is false. 3. I am innocent. Suspect C: 1. I have never met A before today. 2. B is not guilty. 3. D knows how to drive. Suspect D: 1. B's first statement is false. 2. I do not know how to drive. 3. A did it. Which one is the car thief?
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The Impostor
Riddle:
There are two people in front of you holding guns. One is your best friend and the other is an impostor who looks just like him and knows all that he knows. You also have a gun and must shoot the impostor, if you get it wrong, the impostor will shoot you. If you get it right you and your friend are safe. What is the one question you can ask that will reveal the impostor?
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The Virus Riddle
Riddle:
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The Temple Riddle
Riddle:
Can you solve the temple riddle?
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A President's Favorite Riddle
Riddle:
A favorite by Teddy Roosevelt: "I talk, but I do not speak my mind I hear words, but I do not listen to thoughts When I wake, all see me When I sleep, all hear me Many heads are on my shoulders Many hands are at my feet The strongest steel cannot break my visage But the softest whisper can destroy me The quietest whimper can be heard."
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Einstein's Riddle: The Pet Fish
Riddle:
There are five houses in a row. Each house is painted a different color and has a person of a different nationality living in it. Each person drinks a different beverage, smokes a different type of cigar, and owns a different animal as a pet. Using these 15 clues, which person owns the pet fish? The Brit lives in the red house. The Swede has a pet dog. The Dane drinks tea. The green house is directly to the left of the white house. The person in the green house drinks coffee. The person who smokes Pall Mall has a pet bird. The person in the yellow house smokes Dunhill cigars. The person in the center house drinks milk. The Norwegian lives in the first house. The person who smokes Blends lives next to the person with the pet cat. The person with the pet horse lives next to the one who smokes Dunhill. The person who smokes BlueMaster drinks beer. The German smokes Prince. The Norwegian lives next to the blue house. The person who smokes Blends has a neighbor who drinks water.
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B in the Hand
Riddle:
If there is a B in my hand - what is in my eye?
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What Makes This Equation True?
Riddle:
If 1+9+8=1, what is 2+8+9?
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The One-Sided Toaster
Riddle:
Susan uses a toaster that has 2 slots. The toaster toasts one side of each piece of bread at a time, and it takes exactly 1 minute to do so. If Susan wants to make three pieces of toast, what is the LEAST amount of time she needs to toast them on both sides?
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The Hourglasses
Riddle:
If you have an 11 minute and 13 minute hourglass, how can you accurately time 15 minutes?
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A True Equation
Riddle:
Use the numbers 2, 3, 4 and 5 and the symbols + and = to make a true equation. Conditions: Each must be used exactly once and no other numbers or symbols can be used.
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An Egg to a Friend
Riddle:
Mike has some chickens that have been laying him plenty of eggs. He wants to give away his eggs to several of his friends, but he wants to give them all the same number of eggs. He figures out that he needs to give 7 of his friends eggs for them to get the same amount, otherwise there is 1 extra egg left. What is the least number of eggs he needs for this to be true?
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Crossing the Bridge
Riddle:
Four people need to cross a bridge in 17 minutes in the middle of the night. The bridge can only hold two or less people at any time and they only have one flashlight so they must travel together (or alone). The flashlight can only travel with a person so every time it crosses the bridge it must be carried back. Tom can cross in 1 minute, John can cross in 2 minutes, Sally can cross in 5 minutes, and Connor can cross in 10 minutes. If two people cross together they go as fast as the slower person.How can they cross the bridge in 17 minutes or less?
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The Cheating Husbands
Riddle:
In an apartment complex in New York there are one hundred married couples. When one of the husbands cheats on his wife with one of the other wives, his wife has no idea. With the large amount of gossip in the complex, all of the other wives know he is cheating. If a wife finds out that her husband is cheating on her, she kills him the following morning. Someone anonymously sends an email to all of the wives in the building saying that at least 1 man is cheating on his wife in the building. How many husbands will be killed and how long will it take?
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From Apple-York to Strawberry-Ville
Riddle:
You have been given the task of transporting 3,000 apples 1,000 miles from Apple-York to Strawberry-Ville. Your truck can carry 1,000 apples at a time. Every time you travel a mile towards Strawberry-Ville you must pay a tax of 1 apple but you pay nothing when going in the other direction (towards Apple-York). What is highest number of apples you can get to Strawberry-Ville?
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Small But Of Force
Riddle:
I am small, but, when entire, of force to set a town on fire! Let but one letter disappear, I then can hold a herd of deer; Take one more off, and then you'll find, I once contained all human kind.
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Taking Down 1000
Riddle:
What is the value of 1/2 of 2/3 of 3/4 of 4/5 of 5/6 of 6/7 of 7/8 of 8/9 of 9/10 of 1000?
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The Reason You Run
Riddle:
I am the reason you run, because I allow it. I am the reason you scream. I am the cause of all your pain. I am a cage from which you will never be free.
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A Term Used to Confirm
Riddle:
I am a term used to confirm. But take away my front, my face, I become known as human avarice.
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The Four Golfers
Riddle:
Four golfers named Mr. Black, Mr. White, Mr. Brown and Mr. Blue were competing in a tournament. The caddie didn't know their names, so he asked them. One of them, Mr. Brown, told a lie. The 1st golfer said "The 2nd Golfer is Mr. Black." The 2nd golfer said "I am not Mr. Blue!" The 3rd golfer said "Mr. White? That's the 4th golfer." And the 4th golfer remained silent. Which one of the golfers is Mr. Blue?
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Insane Priest
Riddle:
Although I'm not an insect, some people found me very difficult to exterminate. They called me something like 'insane priest.' The first half of my name means the same as 'scrape,' and my last three letters are a metal. Who am I?
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My Wall Clock
Riddle:
I have a clock in my house, on the wall. On a summer's day I forgot to wind it and it stopped. Then I went to visit a friend who had a watch that was always right on time. After I stayed for a bit, I went home, made a simple alteration and set the clock just right. Now how did I do this when I had no watch on me to tell how long it took me to come back from my friend's place?
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