Thursday, August 6, 2015

U2 Gig

Games Reviewer 8:59 AM bono , brain , brain teasers , gig , jigsaw puzzles , logic , logical games , play puzzle online , puzzle , puzzle games , U2 No comments :

Bono, The Edge, Adam, and Larry must cross a narrow darkened bridge in order to reach the stage where they are due to play in 17 minutes.

Unfortunately they only have one torch between them which must be used to cross the bridge safely and may not be thrown, only carried across the bridge.

The bridge will hold up to two band members at any time.

Each member crosses at their own pace and two members must go at the slower members pace.

Bono can cross in one minute, The Edge in two, Adam in five, and Larry in ten.

How do they make it in time?

U2 Gig Puzzle Solution

The trick is to get the two slowest people to cross at the same time. One solution is...

Bono and Edge cross the bridge for which they take 2 mins (Total time = 2)
Then Bono comes back with the torch (Total Time = 2 + 1 = 3)
Then Adam and Larry cross the bridge (Total time = 3 + 10 = 13)
Then Edge comes back (Total = 13+2 = 15)
Then both Bono and Edge cross the bridge (Time = 15+2=17)

Saturday, August 1, 2015

Duck Hunt

Games Reviewer 8:58 AM brain , duck , duck hunt , hunt , logic , logical games , play puzzle online , puzzle , puzzle game , solve riddles online 1 comment :

Tim and Tom were playing their Dad's old favourite game machine - a classic Nintendo Entertainment System (NES). The game was, surprisingly, Duck Hunt. Tom was at the controls, shooting innocent ducks with the lightgun.

Tim pokes Tom, and whines, "let me play." Tom looks back, and Mum is looking at them, so Tom begins to feel generous.

"Tell ya what, Tim. If you can answer a riddle about ducks, you can play. Otherwise, I get a half an hour more."

Tim, who occasionally can be a dunce, happily says "OK!".

Tom asks his question, "How many ducks do you have if you have two ducks in front of two ducks, two ducks behind two ducks, and two ducks between two ducks?"

Tim is stumped. "15?"

"Nope," says Tom.

"12?"

"Nope."

Exasperated, Tim says, "Ok, what is the answer?"

When Tom tells him, Mom goes off smiling, Tim stomps off, and Tom gets the high score on the game.

What it the least number of ducks to meet the conditions?

Duck Hunt Puzzle Solution

Four ducks in a single row would do it.

Monday, July 27, 2015

The Devil's Muse

Games Reviewer 8:57 AM brain , brain teasing games , devil , devil's muse , logic , paly puzzles , puzzle , puzzle game , puzzle online , solve riddle online 1 comment :

It's everybody's fate, but unfortunately for you today it's yours. You die and wander through a long tunnel towards a light. But, wait a second, that's not white light? It's crimson red!

Indeed, going through the gate at the end you face an enormous deity, cloaked in flames, holding a gigantic trident in one hand. On this trident you can make out two bodies speared to it... beads of sweat start to form on your forehead, and they're not from the heat that's omnipresent in this room.
"Hahaha", the Devil laughs, "don't be afraid. You won't necessarily end up like them... they're just the souls of Mickey and Tung. They sold them to me in exchange for the ability to create awesome websites, or something like that, never kept contact with them though... Now, the fact you're here is that this millennium it's my turn to decide who goes to Heaven and who goes to Hell. St. Peter really needed that 1000 year vacation, so I'm on duty now. Since I'm the boss, I get to decide who goes where. And, to be completely honest, this 'Good/Bad'behaviour thingy... it's a bit outdated, isn't it ?

Instead, I would like to read some poetry to you."

And so the Devil starts to recite :

Evil am I.
Evil,
as so to die not sane.

Menace I lay.
A stab mocks.
I revolt.
No din is still.

I kidnap and I kill.
It's sin I don't love.
Risk combat.
Say a lie.

Cane men.
A stone I do toss!
Alive,
I'm alive.

"Now", the Devil says. "If you can point out the single most peculiar thing about this poem to me, I'll let you go and you can take that elevator over there.... what ? ... yeah yeah, the one with hostesses dressed like poultry at its doors... now start thinking, 'cause I ain't got all day!".

Right at that moment you notice that there's still one spike unoccupied on Satan's trident...

What is so special about the Devil's poem?

The Devil's Muse Puzzle Solution

It's a palindrome.

Wednesday, July 22, 2015

The Diagram

Games Reviewer 8:55 AM brain , brain teasers , diagram , logic , mathematical riddles , puzzle , puzzle games , puzzles online , solve jigsaw puzzles 2 comments :

Bob looked up from his book and noticed that Joe was staring at the VCR clock, holding a pencil and a pad of paper. He knew the clock was set correctly, having set it himself. But he noticed that Joe would occasionally write something down.

Finally Bob's curiosity got the best of him: "What are you doing, Joe?"

"Just another minute" came the reply.

"How long are you going to stare at the clock like that?" As Bob finished he noticed the clock advance a minute.

At this, Joe started scribbling some more until he produced this diagram:

	8
6		8
	7
4		9
	7

"Why, just ten minutes, of course", Joe beamed as he showed the diagram to Bob.

What was Joe doing, and what does his diagram mean?

The Diagram Puzzle Solution

Joe counted how many times each of the 7 LEDs lit up for all 10 digits...

 _
|_|
|_|

Friday, July 17, 2015

How Many Monks?

Games Reviewer 8:54 AM brain , brain teasing games , logic , logic games , monks , monks riddle , play puzzle games , puzzle , puzzle games , vow of silence 2 comments :

There's a monastry of fifty monks that have taken a vow of silence. They go through the same routine every day. They wake up, pray. They go to lunch, their only meal of the day, were they all sit round a big circular table, and eat a simple meal. Then they go back to their rooms and pray. Then they fall asleep.

One day, the head monk of the area comes to visit. He's a bit different - he's allowed to talk and has a life outside the monastry. He tells them that there is currently a plague ravaging the land. People everywhere are dying. The disease manifests itself as red blotches on the forehead. The blotches are the only manifestation of the disease for three months, whereupon the next stage starts, a horribly painful death.

The head monk tells them that at least one of their midst will have the disease, probably more. Anybody with the disease should kill themselves, to save all of the pain and suffering. By killing themselves, they will restrict the movement of the disease, and will go to heaven. Anybody with the disease will show the first symptoms within a month. The chief monk then leaves. He returns two months later, to find that all of the infected monks have killed themselves, and they all did it on the same day.

Bear in mind the following:

They have no mirrors or any other way of seeing themselves
The blotches appear only on the forehead and cannot be seen by the monk
Infected monks feel no different - the only manifestation of the first part of the disease are the blotches.
The monks cannot talk to each other or in any other way communicate.
Any monks with the disease will display the blotches within a month of the head monk leaving.
At least one monk definitely has the disease.
The monks only see each other once per day, at lunch, when they are all sat round the round table.
These monks are brighter than the average monk....

How did they know whether or not they were infected and why did they all kill themselves on the same day?

How Many Monks? Puzzle Solution

The way they work this out and the reason it happens on the same day is as follows. It is important to note that not only are the monks intelligent but they all know all their fellow monks are as well.
Start with one monk:

He knows he is the only one who can have the disease so he kills himself on
day 1.

Then two monks:
They know that either one of them has the disease or both do. If monk1
doesn't see the mark of the disease on monk2 then he will realise that he
must have it so will kill himself. If he sees the mark then he knows that
monk2 will following the same reasoning and kill himself. If the next day
the other monk is still alive then he realises that the other monk must have
seen the mark on him and so they both have the disease and he must kill
himself. Both follow the same reasoning and kill themselves on day 2.

Three monks:
If only one of the monks has the disease he will see no mark on the other
two and so diagnose himself. He will kill himself on day one. If two monks
have the disease then they will each see one monk with the mark and one
without. When they see each other again the next day they will deduce that
the monk they see with the mark would only not have killed himself if he
could see someone else with the mark. They know it is not the third monk so
it must be them. Both diseased monks follow the same reasoning and kill
themselves on day two. If all three monks have the disease then they are all
in the same position as the healthy monk in looking on in the previous
example. Each of them can see two diseased men. When they haven't both
killed themselves on day two there can be only one reason - the viewing monk
must have the mark as well. All taking the same reasoning they all kill
themselves on day three.

And so on...
N monks all with the disease will all kill themselves on day N.

Sunday, July 12, 2015

The Geneaology

Games Reviewer 8:52 AM brain , brain teasing games , games for brain , geneaology , logic , ply puzzle games , puzzle , riddles online , solve puzzles online No comments :

Tom and Tim, time tested twice troublesome twins, entered the kitchen at ten o'clock on a Tuesday evening. "Mom, mom, look what I found" said Tom, waving a sheet of faded paper.

"No, I found it." said Tim.

"What is it, Tom?" Mom asks.

"I don't know, mom, but it talks about Genies."

"really?" she replied as she took the paper from him. It was a copy of the family geneaology she had been looking for so she could do some research. "where was it?"

"It was in that Bible on the mantle." said Tim, "Between page 588 and 589."

"No," said Tom, "it was between pages 1201 and 1202!"

Mom gave Tom a dirty look, and said to Tim, "thanks for finding this sweetie." She looks at Tom.

"Why did you lie to me, Tom?"

How did Mom know that Tom was lying?

The Geneaology Puzzle Solution

Page 1 in a book is the page just inside the front cover. Page 2 is the other side of the same sheet.

Pages 1201 and 1202 are opposite sides of the same sheet of paper, so finding something between these two is highly improbable.

Tuesday, July 7, 2015

How Old is the Vicar?

Games Reviewer 8:51 AM brain , brain teasing activity , logic , logical games , play puzzles online , puzzle , puzzle game , puzzles , vicar No comments :

There once was a choirmaster.
One day three people came in and asked to join the choir.
The choirmaster, who believes that there should be age for his choir's members, asks their ages.

To that question, one of them replied: "We can't tell you our ages, but we can tell you the following: the product of our ages is 2450, and the sum of our ages is twice your age."

The choirmaster is puzzled: "That's not enough information!"

Just then, the vicar walked in and said: "But I'm older than all of them"

The choirmaster, who knew the vicar's age, then exlaimed: "Ah! Now I know."

How old is the vicar?

How Old is the Vicar? Puzzle Solution

The vicar is 50.

The way to solve this puzzle, is to first of all write down all the possible permutations of three numbers whose product is 2450.

Starting Numbers	Product	Sum	Choirmaster
1, 1, 2450	2450	2452	1226
1, 2, 1225	2450	1228	614
1, 5, 490	2450	496	248
1, 7, 350	2450	358	179
1, 10, 245	2450	256	128
1, 14, 175	2450	190	95
1, 25, 98	2450	124	62
1, 35, 70	2450	106	53
1, 49, 50	2450	100	50
2, 5, 245	2450	252	126
2, 7, 175	2450	184	92
2, 25, 49	2450	76	38
2, 35, 35	2450	72	36
5, 5, 98	2450	108	54
5, 7, 70	2450	82	41
*5, 10, 49*	*2450*	64	32
5, 14, 35	2450	54	27
*7, 7, 50*	*2450*	64	32
7, 10, 35	2450	52	26
7, 14, 25	2450	46	23

Since the choirmaster, after being told that the product of the ages is 2450 and that the sum is twice his age, still can't work out the ages, we can deduce that there are two (or more) combinations with the same sum. Those combinations have been highlighted in the table above.

The vicar then claims to be older than all of them. The oldest of the three is 49 in the first remaining combination, and 50 in the other. The choirmaster knows the vicar's age, and after his claim, he deduces everyone's age. The only way he's able to do so is if the vicar is 50, leaving the combination 7, 7, 50 logically impossible (the vicar has to be older, that is at least 1 year older than the others), and therefore learning that the people's ages are 5, 10, and 49.

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