Questions tagged [strategy]

A puzzle whose solution is a methodological plan of action for realizing a specific goal.

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0answers
110 views

What are some tips to solve an environmental-based enigmatic puzzle (EBEP's)?

First, some rough definitions: enigmatic puzzle: a problem where the goal / answer should be well-defined (e.g. enter a certain word or phrase into an form which is accepted; find a clue to a ...
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0answers
239 views

Can a group of professors determine their average salary without learning any information about each other's? [duplicate]

A group of at least 5 jealous professors are locked in a room. There is nothing else in the room but pencils and one tiny scrap of paper per person. The professors want to determine their average (...
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1answer
651 views

How many doors are there? [duplicate]

You wake up in the center of a large, homogeneous, nearly-circular room. Along the edge of the room, are many doors, each looks identical to the last. When you stand at one door and look across the ...
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0answers
212 views

Shooting an invisible rabbit [duplicate]

An invisible rabbit sits on one of the posts of an infinite fence. A local farmer cannot stand this fact and wants to shoot the rabbit down*. Every time the farmer shoots her gun, the rabbit jumps to ...
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5answers
728 views

One Hundred Prisoners and a Rubik's Cube

Say there are 100 perfectly intelligent prisoners (who don't have incredibly good memories) who are jailed for life (and also live eternally). The warden decides to play a game with them. There is a ...
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1answer
973 views

How could I have avoided this mistake in Minesweeper?

The puzzle grid pictured below is a prime example of the classic rush to judgment: I was so sure of my decision, but when I double-clicked to clear more cells, the cell to the left of the one I had ...
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6answers
453 views

Data Sharing Between 3 Players [closed]

Consider a situation in which two companies hold data about individuals: the first company holds individual's names, and their age. The second company also holds the individual's name, but instead of ...
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3answers
729 views

Where the hell is Vincent?

Vincent was a software engineer working at Bell Inc, and well...he's gone insane. He is said to suffer from clinical schizophrenia, autism and severe anxiety. But there's one golden fact about his ...
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2answers
157 views

Finding a line on a plane

Imagine you are on an (in)finite 2d-plane (and confined to walk on it). There's a straight line somewhere on the plane, but you don't know where it is and neither can you find it by looking from afar. ...
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3answers
422 views

Rullo solving strategy for 2-4

How to eliminate/nominate candidates without guessing? For the 3s it's quite easy because of the odd numbers but how to get further?! For thoose who don't know the game, here's a short introduction:...
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3answers
349 views

Sub-puzzle: Master and Slave versus Bob the Violent but Honest Psychopath

[I created this as a sub-puzzle to "Strategy to beat the Casino reversed", that has been sitting unsolved for months. You may wish to read that puzzle first, but this is self-contained. My answer to ...
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3answers
404 views

This Dice Blackjack game - is there Nash equilibrium?

This dice Blackjack is game for two - bettor and dealer. It is played with fair six-sided dice. Bettor: Bettor starts the game. Bettor can roll dice as many times he/she desires while the sum of ...
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1answer
229 views

Is there any specific way to play Solitaire?

I am interested in finding out if there is any specific way (algorithm) to play solitaire (not the card game)
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1answer
81 views

Taking a ball from basket challenge [duplicate]

I have 10 red balls, 10 blue balls, and 2 baskets. You are free to choose the numbers of red balls, and the numbers of blue balls to put to the first basket. Then you have to put rest of the balls to ...
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0answers
185 views

Best strategy for Multiple Blindfolded 3x3 Rubik's Cube event (WCA)

The MBLD event is quite hard on the technique and the memory , testing the 3x3 Blindfolded method. The cube placement strategy as discussed by few officials stand at : Cube Placement The other ...
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2answers
156 views

Speeding up half way [duplicate]

On my way to the supermarket, I walk at a certain speed. I want my average speed for the back and forth trip to be twice that speed. At what speed should I go back home to reach that goal?
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1answer
122 views

Important steps and strategies for solving puzzles [closed]

What are the necessary steps for solving any puzzle?
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3answers
143 views

Find your market [closed]

There are 100 people from different nationality, gender, profession etc in a ballroom are taken as captives by an underground gang. Each of captives are given 5 dollar bills. And said After 30 ...
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1answer
101 views

What Land Grant Would You Select? [closed]

A king has just decided to divide up very large parcel of land and provide land grants to subjects that want to start a farming operation. This particular king and his advisors were into circular ...
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2answers
275 views

Kill for a young body [closed]

FROM 2013 Real Playing Game. Here's the trailer. You are an old, deathly-ill multimillionaire. A biotech company has developed some brain transfer technology and offers you the chance to ...
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11answers
12k views

What's your price for the eggs? [closed]

I came across this problem some years ago in a book (which I won't mention, and request others to not mention if they know). The solution is quite elegant and difficult to arrive at by mere trial and ...
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6answers
1k views

Minimum number of steps required to cut this bar

What is the minimum number of steps required to cut this chocolate bar which is a single piece into at least 30 single pieces? 1)Image for chocolate bar 2)Image for single piece ...
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2answers
509 views

Binary manipulation game

I made a (for now, 2 player) game once that deals with manipulating binary numbers on a single list. Here are the rules. Rules For now, take $n=5$. If possible, provide a solution for generalized $n$...
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2answers
475 views

The Trek to Mount Tarantoola - Redux!

Opal awoke with a start- exhausted in her trek, she had momentarily slipped into a dream of a hastily written and terribly vague puzzle that was based entirely too much on an improvised scene she had ...
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5answers
3k views

How many Questions will you need to Guess the Card?

Suppose your friend grabs a random card from a deck. Now you can ask questions about that card. You can only ask yes/no and greater/less than questions. How many questions do you need to determine the ...
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0answers
64 views

How does one cross the bridge? [duplicate]

There are two islands connected by a wooden bridge. The bridge can only hold two people at a time. There are four people on Island "A" and if they don't go to Island "B" they will get over run by ...
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2answers
153 views

Bowser and Mario in a Pinch! [duplicate]

Our little hero starts off in a round (or square) pit with very high walls, an escape does not seem possible. However also in the pit is Bowser! How did that happen? Both of them are now facing off ...
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4answers
323 views

If 27 x 147 = 3969 What is its square root WITHOUT using complex / long calculationx [closed]

Basically what you have to do is find √3969 without using complex /long calculations
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6answers
1k views

The Maze With An Unknown Size

You awake in the middle of a maze. You do not know how large the maze is. You do not know how many paths there are. How can you assure you get out in the shortest amount of time? This assumes the ...
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4answers
348 views

The best barber in town

You are in a town with one barber shop and two barbers, one with good hair and one with terrible hair, there are no towns nearby so everyone in town must get there hair cut at this barber shop. ...
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5answers
602 views

Murder mystery on 1st day of school [closed]

On the first day of school there has already been a murder! There are four suspects and here is their stories: The math teacher says he was giving a test to his students. The librarian was ...
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1answer
237 views

What did the Wise Man Say? [duplicate]

An Arab sheik is old and must will his fortune to one of his two sons. He makes a proposition. His two sons will ride their camels in a race, and whichever camel crosses the finish line LAST will win ...
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1answer
747 views

Connect 4 Infinite

"Attention everyone! It is the final game of the Connect 4 championship! Billy and Sarah have played perfectly so far during this tournament, so in efforts to prevent Player 1 from being able ...
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1answer
85 views

Another how to kill 7 submarines

7 submarines are placed on an x, y grid - 0 to 111. They are located on whole numbered locations. Each submarine starts from any selected location with a given fixed speed and fixed direction, ...
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4answers
5k views

Cutting circular pie into seven equal parts

your task is to cut this pie (shown below) into seven equal parts. What equal means by is size and shape you have only one knife of length equal to cakes diameter and a scale to ...
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1answer
524 views

Social networking “party” system

A party is a group chat, the only difference being there's a "leader" (this is the person who started the chat) In these parties, there can only be 5 maximum users, this includes the leader. In ...