Hard Puzzles

The Latest and exclusive collection of Hard Puzzles to tease your brain. Hard Puzzles helps exercising the brain and develop it to think logical and solve real world problems differenlty. PuzzleFry brings you the best Hard Puzzles, you'll enjoy wide range of Hard Puzzles, Lets try few Hard Puzzles listed below -
• Add an English word to the following set of words in such a way that the first word is completed and the second word starts.

Foot——–pen

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• If,
29 – 1 = 30
9 – 1 = 10
14 – 1 = 15

Based on above logic, can you prove that
11 – 1 = 10 ?

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• Santa is getting ready – sorting presents, filling sacks and working out his route to make sure he can deliver all his wonderful presents. The trouble is, every year just before Christmas, the reindeer have nothing to do and mostly stand around getting rather bored. They are always asking if they can help but there’s nothing they can do until Santa’s ready to go.

This year, Santa is prepared for them and he’s set them a little challenge to help keep them busy. He’s given them the following problem:

Five children from five different families living in five different counties of England have asked for a different gift each. From the clues, the reindeer have to work out who’s who, where each child lives and what present each has asked for. The first reindeer to solve the problem gets an extra portion of Christmas pudding on Christmas Day!

1. Neither Cliff, nor Jennifer Feather (who does not live in Yorkshire), lives in Kent.

2. Young Crawford, who is neither Sarah nor Cliff, asked for the pony (a gift that Santa would have particular difficulty getting down the Crawford family’s chimney!).

3. Young Rowlands is neither the child who lives in Yorkshire nor the child who has asked for a bicycle.

4. The gift due for delivery to Cornwall, which is not for the child surnamed Rowlands, is a computer.

5. Liz, who has asked for the painting set, is not from Kent. Her surname is not Jamison.

6. The child who lives in Essex has asked for a guitar. Alan lives in Cumbria.

Children’s first names : Alan, Cliff, Jennifer, Liz, Sarah
Children’s last names : Crawford, Feather, Jamison, Northey, Rowlands
Counties : Cornwall, Cumbria, Essex, Kent, Yorkshire
Presents : Bicycle, Computer, Guitar, Painting Set, Pony

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• Using a water tap, a 07 gallon container and a 11 gallon container, can you measure exactly 9 gallons?

You may empty the containers down the drain.

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• The sword of truth. The abilities of the swords can only be used once. After the usage of the ability, the sword turns to dust and becomes a sword in the stone unless someone pulls it again.
Characters: The siblings (1-5)

1)Lucas – the illusionist, the one who bends light
2)Piam – the one who copies abilities
3)Elan – the one who takes away (abilities)
4)Randy – the jack of all trades (he can use any ability he’d seen)
5)Uell – the one who was killed, she owns the sword of truth.
6)Sid – the lover of Uell, owns the sword of ????, the one blessed by the wind
7)The guard

The Story:
Uell, a girl who with no ability, was killed. Sid was enraged that the guard whose job is to protect Uell was just frozen in fear. Then he pulled out the sword of truth and quickly stabbed the guard. And as he asked who killed his Uell, the guard muttered, “You.”

Who killed Uell?

Puzzle: Who killed who?

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• Every Year, five couples make their annual trek up a mountain and have a picnic lunch together at the top. Each couple consists of one man (Craig, Bob, Harold, Larry, or Pete) and one woman (Eileen, Phyllis, Victoria, Sally, or Lisa) Each couple brought one item to share (potato salad, hamburgers, pasta salad, dinner rolls, or hot dogs). Using the clues, determine who is a couple and who brought what item.

1. Phyllis and her husband brought the hamburgers
2. Harold and his wife are vegetarians
4. Both Harold and Craig were guests at Eileen’s wedding
5. Bob and Lisa have been happily married for 25 years
6. Larry and his wife brought the rolls
7. Sally brought hot dogs
8. Phyllis and her husband were guests at Craig’s wedding

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• Two robots are placed at different points on a straight line of infinite length. When they are first placed down, they each spray out some oil to mark their starting points.

You must program each robot to ensure that the robots will eventually crash into each other. A program can consist of the following four instructions:

• Go left one space
• Go right one space
• Skip the next instruction if there is oil in my current spot
• Go to a label

[Note that a “label” is a name that refers to a line of your code. For example, you could label the third line of your program “surveying”. Then, the instruction “goto surveying” would jump to line 3 and start executing from there on the next cycle.]

A robot will carry out one instruction per second. Both robots need not have the same program. Note that you won’t know ahead of time which robot is on the left and which is on the right.

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• I ask Alex to pick any 5 cards out of a deck with no Jokers.

He can inspect then shuffle the deck before picking any five cards. He picks out 5 cards then hands them to me (Peter can’t see any of this). I look at the cards and I pick 1 card out and give it back to Alex. I then arrange the other four cards in a special way, and give those 4 cards all face down, and in a neat pile, to Peter.

Peter looks at the 4 cards i gave him, and says out loud which card Alex is holding (suit and number). How?

The solution uses pure logic, not sleight of hand. All Peter needs to know is the order of the cards and what is on their face, nothing more.

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• Ring City has 100 houses arranged in a circle. Alice starts at her own house, and every day she randomly moves to one of the two adjacent houses, each with 50% probability.She repeats this until she has visited all of the houses.

Which house(s) is/are the most likely to be visited last?

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