World's hardest riddles are selected after checking their difficulty level by us. In this category we have listed the hardest to be solved riddles. They are tricky, confusing as well as mind bursting. They will make you think, think and think. You cannot solve these riddles easily. They demand for a lot of concentration, dedication and involvement. You will have to solve them with logics and reasoning.

Get ready to puzzle your minds.
  • Views : 40k+
  • Sol Viewed : 10k+

#1 - Toughest Long Logic Puzzle

Difficulty Popularity

The puzzle question is : On Bagshot Island, there is an airport. The airport is the home-base of an unlimited number of identical airplanes. Each airplane has a fuel capacity to allow it to fly exactly 1/2 way around the world, along a great circle. The planes have the ability to refuel in flight without loss of speed or spillage of fuel. Though the fuel is unlimited, the island is the only source of fuel.
What is the fewest number of aircraft necessary to get one plane all the way around the world assuming that all of the aircraft must return safely to the airport? How did you get to your answer?
Notes:
(a) Each airplane must depart and return to the same airport, and that is the only airport they can land and refuel on ground.
(b) Each airplane must have enough fuel to return to airport.
(c) The time and fuel consumption of refueling can be ignored. (so we can also assume that one airplane can refuel more than one airplanes in air at the same time.)
(d) The amount of fuel airplanes carrying can be zero as long as the other airplane is refueling these airplanes. What is the fewest number of airplanes and number of tanks of fuel needed to accomplish this work? (we only need airplane to go around the world)

  • Views : 80k+
  • Sol Viewed : 20k+

#2 - Famous Egg Floor Riddle

Difficulty Popularity

* You are given 2 eggs.
* You have access to a 100-story building.
* Eggs can be very hard or very fragile means it may break if dropped from the first floor or may not even break if dropped from 100th floor.Both eggs are identical.
* You need to figure out the highest floor of a 100-story building an egg can be dropped without breaking.
* Now the question is how many drops you need to make. You are allowed to break 2 eggs in the process

  • Views : 80k+
  • Sol Viewed : 20k+

#3 - Hard Logical Puzzle

Difficulty Popularity

You are the ruler of a medieval empire and you are about to have a celebration tomorrow. The celebration is the most important party you have ever hosted. You've got 1000 bottles of wine you were planning to open for the celebration, but you find out that one of them is poisoned.

The poison exhibits no symptoms until death. Death occurs within ten to twenty hours after consuming even the minutest amount of poison.

You have over a thousand slaves at your disposal and just under 24 hours to determine which single bottle is poisoned.

You have a handful of prisoners about to be executed, and it would mar your celebration to have anyone else killed.

What is the smallest number of prisoners you must have to drink from the bottles to be absolutely sure to find the poisoned bottle within 24 hours?

  • Views : 70k+
  • Sol Viewed : 20k+

#4 - Most Popular Logical Puzzle

Difficulty Popularity

Outside a room there are three light switches. One of switch is connected to a light bulb inside the room.
Each of the three switches can be either 'ON' or 'OFF'.

You are allowed to set each switch the way you want it and then enter the room(note: you can enter the room only once)

Your task is to then determine which switch controls the bulb ??

  • Views : 80k+
  • Sol Viewed : 20k+

#5 - Crossing Bridge Brain Teaser

Difficulty Popularity

Four friends need to cross a dangerous bridge at night. Unfortunately, they have only one torch and the bridge is too dangerous to cross without one. The bridge is only strong enough to support two people at a time. Not all people take the same time to cross the bridge. Times for each person: 1 min, 2 mins, 7 mins and 10 mins. What is the shortest time needed for all four of them to cross the bridge?

By Admin
  • Views : 80k+
  • Sol Viewed : 20k+

#6 - Live Or Die Probability Puzzle

Difficulty Popularity

Hussey has been caught stealing goats, and is brought into court for justice.

The judge is his ex-wife Amy Hussey, who wants to show him some sympathy, but the law clearly calls for two shots to be taken at Hussey from close range.

To make things a little better for Hussey, Amy Hussey tells him she will place two bullets into a six-chambered revolver in successive order.

She will spin the chamber, close it, and take one shot.

If Hussey is still alive, she will then either take another shot, or spin the chamber again before shooting.

Hussey is a bit incredulous that his own ex-wife would carry out the punishment, and a bit sad that she was always such a rule follower.

He steels himself as Amy Hussey loads the chambers, spins the revolver, and pulls the trigger. Whew! It was blank. Then Amy Hussey asks, 'Do you want me to pull the trigger again, or should I spin the chamber a second time before pulling the trigger?'

What should Hussey choose?

  • Views : 70k+
  • Sol Viewed : 20k+

#7 - King Gift Puzzle

Difficulty Popularity

King Charles want to send the diamond ring to his girlfriend securely.He got multiple locks and their corresponding keys.His girl friend does not have any keys to these locks and if he send the key without a lock , the key can be copied in the way.How can charles send the ring to his girl friend securely .

  • Views : 70k+
  • Sol Viewed : 20k+

#8 - Math Handshake Riddle

Difficulty Popularity

At a party, everyone shook hands with everybody else. There were 66 handshakes. How many people were at the party?

  • Views : 70k+
  • Sol Viewed : 20k+

#9 - Terrorist Plane Hijack Puzzle

Difficulty Popularity

A terrorist hijacks a plane with 10 passengers and there is lots of gold in the plane.
After talking the gold , he asked the government officials for 11 parachutes.
He killed all the passenger so that no one can identify him , take one parachute and jumps off.

Was he stupid to ask for 11
parachutes if he need only one ?

By Admin
  • Views : 80k+
  • Sol Viewed : 20k+

#10 - Julius Caesar Cipher Puzzle

Difficulty Popularity

What does this message say ?

G T Y O R J O T E O U I A B G T


Hint
Count the letters and try splitting the letters up into groups.
Also known as Julius Caesar Box.

Next
Submit your Email Address to get latest post directly to your inbox.

Latest Puzzles

23 November
Small To Big Room Riddle

Terry enters a small room.
. . ....

22 November
Soldiers And Castle Riddle

Two soldiers were guarding the main gate...

21 November
Guess Who Am I Riddle

I cannot see despite having an eye. Who ...

19 November
2 Words Riddle

Can you list words which sound alike wit...

18 November
Maths Sets - Strong Disciplined Boys Puzzle

What is the count of strong disciplined ...

17 November
Oscar Hollywood Rebus

Which Oscar winning movie is hidden in t...

Puzzles Tags :

Illusions Tags :