Questions tagged [strategy]
A puzzle whose solution is a methodological plan of action for realizing a specific goal.
0
votes
2answers
126 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. ...
3
votes
2answers
236 views
Who is the reigning queen?
A boy and a girl (Jack and Jill) were playing chess. The girl played with Red pieces and the boy played with White pieces, untraditional colors but all traditional rules.
Near the end of the game, it ...
5
votes
2answers
171 views
Pick and roll and guess
The caretakers in a Home for the Golden Agers decided to have a guessing game for the old fellows. Two partner teams shall play the game and the winners shall have free access to the fridge for 1 week....
3
votes
1answer
127 views
Another variation of the game of Nim
Two players set several piles of chips. The piles are arranged in a row from left to right. By turns each player takes one chip from one of the piles and adds at will as many chips as he/she wishes (...
15
votes
2answers
400 views
What is the optimal strategy for this triangular board game?
I saw a board game somewhere and I want to know the optimal strategy for it.
The game is played on a triangular board with 21 slots:
The two players, red and blue, take turns to put numbered circles ...
1
vote
1answer
104 views
Guess the coin toss [duplicate]
You and your friend are put in two different rooms with just a coin and no way to communicate. You both toss the coin at the same time.
Your task is for at least one of you to guess correctly what ...
-1
votes
1answer
68 views
Important steps and strategies for solving puzzles [closed]
What are the necessary steps for solving any puzzle?
10
votes
3answers
605 views
Fight Battle 21
Based off a very, very well-known puzzle
The new RPG, Fight Battle 21, is now here! Now with the same three characters as the previous 20 editions!
Knight: 6 HP, 60% chance to deal 3 damage
Archer: ...
8
votes
3answers
1k views
Card game rigging
You and your friend are playing a game with a deck of cards numbered 1 to N.
You will first put the deck of cards in whatever order you want. Next your friend will choose an option: "A" or "B". ...
3
votes
1answer
120 views
Space saving dish washing
There are some stacks of dishes on the left side of the sink. There aren't any on the right side. A larger dish can never go on top of a smaller dish (this is valid for all stacks on both left and ...
1
vote
0answers
96 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 ...
8
votes
4answers
513 views
Maxit negotiations
Your military junta has recently overthrown the government of Malta and taken control of the small island nation. As a way to finance your wise and just dictatorship, you have decided to threaten the ...
31
votes
2answers
608 views
lolcatz can haz ur infinit cheeseboard
This is a problem on an infinite chessboard with pieces called lolcatz. They can move like queens or knightriders, but have a strange disadvantage...
... you've never heard of knightriders? Well, ...
0
votes
3answers
282 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:...
2
votes
1answer
162 views
Master and Slave versus Bob: easy version
Continuation of: "Sub-puzzle: Master and Slave versus Bob the Violent but Honest Psychopath"
Continued in: "Master and Slave versus Bob: hard version"
Previously I described a game that is played ...
1
vote
1answer
218 views
Master and Slave versus Bob: hard version
Continuation of: "Sub-puzzle: Master and Slave versus Bob the Violent but Honest Psychopath" and "Master and Slave versus Bob: easy version"
The hard version is identical to the easy version (see ...
1
vote
3answers
288 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 ...
6
votes
1answer
222 views
Another 'Find the Path' Puzzle
Based on user477343's Find the Path puzzle I have produced a slightly larger puzzle based on a similar mechanic. Goal is as follows:
Draw a continuous path between the two red dots.
The path must ...
8
votes
4answers
333 views
A “Find the Path” Puzzle
I invented a puzzle, inspired by Simon Tatham's Portable Puzzle Collection. Is there anything that it could improve on? Was it too easy, or was it too hard? Anything I could add? What must I call it?
...
16
votes
2answers
329 views
If you have 3 random numbers between 1 and 27 can guess the fourth?
Problem:
Ashley and Ivan want to impress their friends and come up with a magic trick:
One of their classmates comes up with 4 unique random numbers between 1 and 27 and tells them to Ivan. Ivan ...
1
vote
1answer
72 views
How to make a 2v2 rotation with 5 people
I'm running a volleyball club at school and we currently have 5 active members. Is there a way of having everybody play in a duo with everybody else and have one person sit out each game practising? I ...
4
votes
1answer
171 views
Are there basic weighing puzzles requiring adaptive strategies?
Let us define a basic weighing puzzle as such:
There are <number> identical balls, except one weighs <more/less/a different amount than the others>
A balance scale may be used to weigh two ...
3
votes
4answers
257 views
Classic 2 Guards But With 3 Doors Instead
So the rules are almost the same :
You get to ask just one question to whichever guard you want to (just 1 guard; asking both guards is not allowed)
There are 2 guards, one tells the truth and ...
0
votes
0answers
97 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 ...
1
vote
2answers
623 views
Strategy in Coloring a 4x4 empty grid and the one who completes any 2x2 area of the grid is the loser
Alice and Bob are playing the following game: They have a 4x4 empty grid and take turns coloring one square each, starting with Alice. Assume that both players will colour the squares in with the same ...
7
votes
6answers
755 views
Single-pile Nim with Three Players
Three perfectly rational logicians (Alice, Bob and a Quetzalcoatlus) are playing a game. (Charlie couldn't make it, so he asked the Quetzalcoatlus to fill in for him.)
The rules are very simple:
...
2
votes
5answers
350 views
A Very Odd Game
Barry, John, and Caleb, all perfect logicians, were very bored one day and they decided to come up with a new game (they haven't got a name for that game yet). The rules were quite simple :
The first ...
2
votes
2answers
251 views
Radioactive River
You, Alice, Bob, Charlie, Daniel, Elisa, Fred, and Greg are playing a cooperative game called Radioactive River. They have to get across a 20 meter carpet/radioactive river, and they only have: 3 ...
11
votes
6answers
693 views
I Have To Be With Them!
It's almost time for another year of school! But before school starts, Principal Little needs to form classes. Because there are so many people in a class, the parents are always complaining, asking ...
12
votes
3answers
336 views
Guffin factory regulated heist
I work at a guffin factory. I manufacture guffins and have an unlimited access to guffin storage. I can fit up to 20 guffins in my bag, get them home from the factory and nobody will chase me.
You ...
1
vote
2answers
267 views
Solution or Origin of logic puzzle
This is not my puzzle and I do not know the solution. This was shared to me by a friend. Their former boss told them this riddle. I was told this question originated from Steven's Institute of ...
2
votes
1answer
616 views
$\verb|Eight Circles|$
An entry in Fortnightly Topic Challenge #37: Rare and Endangered 1
Materials
Pencil;
Eraser;
Blank A4 sheet of paper; and
A ruler (also to use as a straightedge).
Puzzle:
Draw a square with a side-...
7
votes
1answer
207 views
Domino Tiling Game
Two players are presented an $n\times n$ grid. They take turns placing a piece on the board until no more moves are possible. The last player able to make a move is the winner. The pieces are $2\times ...
13
votes
4answers
3k views
A dice game, what is the optimal strategy?
Alice was walking on the street when she came across a man playing with a die. She could not help trying to check if the die was loaded and while she was concluding that it wasn't loaded, the man ...
8
votes
1answer
449 views
Clearing the Robot Museum
The grand opening of the Collapsible Robot Museum is just 1 week away in the robot nation of Robotia. The museum is unique because shortly after the museum closes, the building collapses into a flat ...
0
votes
6answers
443 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 ...
29
votes
3answers
959 views
Snakes on a Plane!! 2
An entry in Fortnightly Topic Challenge #35: Restricted Title 1. Inspired by the title of this xkcd comic, but in no way related or affiliated beyond the shared name.
It's a well known fact that any ...
8
votes
4answers
402 views
Ten users, three lights but it's a chatroom
This is a variant of the classic problem of m prisoners n lights. (Example may be found here but note that the requirements are not exactly the same)
The goal for you, however, is different. You want ...
2
votes
0answers
116 views
Ten users, ten deadly collars and three lights [duplicate]
One day, 10 puzzling.SE users, including you, find yourselves in a horrible prison. Each of you has a deadly collar, presently lethal. It is safe to take off only when all of the 10 collars have been ...
8
votes
5answers
391 views
Two person game, choosing an integer between 1 and 30?
Suppose two players are playing a game. The first player chose an integer, n st. $n \in \left\{ 1,\ldots ,30\right\}$. The second player picks a different one. After that, a random integer x st. $x \...
3
votes
3answers
183 views
Optimal number of weightings in marble problem
Consider $N$ pieces of marble. The pieces of marble look identical to one another. One of the pieces is heavier than the other. In other words, out of the $N$ pieces, $N-1$ have the same weight and $1$...
5
votes
3answers
474 views
Foolproof double betting
Just made up a problem. Have ideas, but no proof yet – came here for professional help.
Tonight an important match of Metagame (box/football/baseball/chess) takes place. Everyone is hyped. Everyone ...
4
votes
1answer
251 views
Variant to Minesweeper
The following game is a variant of minesweeper:
There is a 7 by 7 grid of squares. Each square either has a skull or a number indicating the number of squares containing skulls surrounding that ...
4
votes
1answer
188 views
Find the fake bar in 2 weighing [duplicate]
You are given 8 equal sized bars of silver labeled a to h. You know for a fact one of them is fake, and the only measurable difference is weight. However you do not know if the fake bar is heavier or ...
13
votes
3answers
509 views
Strategy to beat the Casino reversed
Let's consider Strategy to beat the Casino puzzle, but reverse it - fix number of losses and ask a question about amount of rounds:
Two players, A and B, and the Casino play a game. The game ...
-4
votes
1answer
151 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 ...
5
votes
3answers
251 views
Crazy queen in checkers
Checkers
Checkers, also called draughts, is an interesting game. all pieces are placed on black tile and are all pawns at the start. When a pawn reach the final line, a powerful piece is created: the ...
18
votes
4answers
3k views
A Tic-Tac-Toe type game
I found this interesting game with no name:
You have a 1x11 grid, like this.
The way you play is similar to Tic-Tac-Toe (aka Noughts and Crosses). Players take turns to place Xs and Os on the grid, ...
4
votes
2answers
238 views
How many nodes in the network?
I don't actually have a solution in mind for these, but it seemed puzzly enough to bring to the table. Seems as though someone must have come up with this before, but if so, I couldn't find it when I ...
5
votes
3answers
1k views
Hacking an electronic keypad v2
This is related to Hacking an electronic keypad.
You are a spy trying to break into an enemy facility. The back door is protected by an electronic keypad lock. You know that this particular lock is ...
