Questions tagged [logic-grid]
Logic grid puzzles, first produced by Lewis Carroll, are puzzles in which correspondences must be drawn between multiple ways of describing the same list of objects, using a given set of clues about these correspondences. Such puzzles can be solved using a grid, but for pre-existing grids whose elements must be filled using logic, use the [grid-deduction] tag instead.
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Man of War: A Numbers Problem
The story is set in an alternate universe, where magic prevails.
A man breathes heavily, muttering inaudible words while hunched over a spellbook. This person is a castle mage, tasked with determining ...
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Friends and Enemies
Here is a short puzzle I made:
There are 10 people arranged in a row, and each of them has a friend and an enemy also present in the row. Your goal is to identify the friend and enemy of each person.
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In logic puzzles, can I rely on "or" to mean "exclusive or"?
Is there a common rule for logic puzzles on whether the word "or" should be treated as inclusive or exclusive? In computers, "or" is always inclusive. In common speech, it seems ...
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Does "The investigator traveled the same week as the thief." in a logic-grid clue mean that two different people are referred to?
I've always wanted to know if a certain thing was expressly allowed or disallowed in logic puzzles. Here's a specific example:
The investigator traveled the same week as the thief.
Does this mean ...
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Is "Connect 4 is Excellent, Connect 3 is Great" a solved game?
Connect 4 is known to be a solved game.
I am introducing the Connect 4 is Excellent, Connect 3 is Great, variant of Connect 4.
Both players play like connect 4 and fill the grid i.e. they don't stop ...
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My Master Piece Logic Puzzle Mystery
Six suspects for a bank robbery line up in front of you, with different nationalities, activities, occupations, suit colours and items. They all look nondescript to you, but you know someone holds a ...
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logical deduction - Persian Rugs - A Zebra Puzzle (Einstein's Riddle) Variation
You can play this Zebra Puzzle here: https://www.brainzilla.com/logic/zebra/persian-rugs/
Client #1
Client #2
Client #3
Client #4
Client #5
color
name
type
symbols
price
place
Five men, who ...
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Italian Exhibition - A Zebra Puzzle (Einstein's Riddle) Variation
You can play this Zebra Puzzle here: https://www.brainzilla.com/logic/zebra/italian-exhibition/
Woman #1
Woman #2
Woman #3
Woman #4
Woman #5
shirt
name
surname
painter
time
age
Five women are ...
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Need help with this ice cream logic puzzle
Disclaimer! I'm not looking for the answer, so no need to solve it. Just some help.
In this website here I have tried many times to no avail. I don't know what I am getting mixed up on. So far I have ...
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Bunk-bed Brothers
When we were boys, our mother, because of a shortage of living space, built for me and my five brothers -- Nortie, Matthias, Jack, Kenneth, and Lloyd -- a big, beautiful, sextuple-decker bunk bed.
I ...
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A streamer's diet
I'm in dire need of help.
I've been hired to take care of a certain streamer during a charity event, but the instructions they gave me for meals and games are just, way too confusing!
This one ...
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How to solve this North and South Sitting arrangement puzzle?
10 friends A,B,C,D,E,F,G,H,I,J are sitting in a row. Some of them are facing north while others are facing south. Not more than 2 persons facing the same direction sit together. They all have their ...
user79566
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Ernie and the Disguised Donors
I was spending the morning helping Ernie dig up the potato patch when he got an emergency phone call from the Society for Absent-Minded Mathematics Professors – it appeared that they had “A bit of a ...
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How to solve sitting arrangement questions with 100% accuracy?
There are questions of sitting arrangement like persons sitting in a circular arrangement facing inward/outward or both, or a linear arrangement or box arrangement etc.
Sometimes a few data points are ...
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Quickest chess stalemate with Queens exchange
Continuing my previous puzzle.
If both players cooperate, what is the quickest stalemate in chess that includes a Queens exchange, in a legal game?
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PSE Advent Calendar 2021 (Day 12): Christmas Confusion
This puzzle is part of the Puzzling StackExchange Advent Calendar 2021. The accepted answer to this question will be awarded a bounty worth 100 reputation.< Previous Door Next Door >
Part 1:
...
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Blood relations - who is married to whom and reads which magazines?
In a family of eight persons - P, Q, R, S, T, U, V and W - there are four males and four females. There are three married couples and two persons are unmarried. Each of them reads a different magazine,...
user75346
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How to create a logic grid given three categories?
How do they make the three category setup here? I do not understand how this works. A detailed answer to this is most welcome.
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Reasoning puzzle involving five friends and five departments
Five friends A, B, C, D, and E are working in 5 different departments M, N, O, P and Q and they earn different salaries i.e. 10,000, 15,000, 20,000, 25,000 and 30,000 and they all are of different ...
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Logic grid puzzle - Carson City Chronicle
I can't figure this one out. Any help would be appreciated.
Journalist-in-training Janet Seymour's byline appeared in the Carson City Chronicle on six days last week. On each day (Monday through ...
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Books on a bookshelf
On a shelf the blue book is to the right of the red book, the yellow book is in
one end, the black book is just before the white and the green is
between blue and white. What is the order of the green ...
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Nine neighbors in a hotel
Alessandra, Marta, Cristiane, Camila, Eduardo, Janice, Giulia, Mateus and Lucas are neighbors who live in a hotel.
On each floor there are three bedrooms: one on the left, one in the center and one ...
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Who took Gwen's purse and jacket?
The puzzle is as follows:
Four sisters went to the movie theater. While leaving the venue each
one of them took by mistake the purse of another sister and the coat
of another different sister. Maria ...
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Einstein's Puzzle with 5 furniture customers
Einstein had made quite a good zebra puzzle tough enough to confuse many people's brains. Today I present even tougher one, will you be able to solve it?
There are 5 customers, who bought a different ...
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Cheesemonger's puzzle
An entry in Fortnightly Topic Challenge #45: Flags
The cheesemonger wants to arrange the wheels of cheese on display. The display case has two shelves with space for three wheels of cheese on each. He ...
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An Artistic Bunch
Luke, Clive, Anton and Paul are four talented creative artists, one a dancer, one a painter, one a singer, and one a writer. (Though not necessarily respectively.)
Luke and Anton were in the audience ...
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Who dances what musical genre and with whom?
The puzzle is as follows:
4 couples attended a magazine opening celebration party. These couples
danced among themselves, all at the same time, to a disco suite, a pop
ballad, a jazz tune and a waltz....
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Teachers around a circular table - who teaches geometry?
The puzzle is as follows:
In a teacher's lounge there is a circular table where
the teachers eat their meals during lunch time. The teachers' names are Albert,
Benny, Charles, David, Henry and Felix, ...
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Asymmetric Logic-grid "Brentwood Puzzle": What are these people doing?
Three men, including Gianni and three woman, including Sachi are in line at the BrentWood post office. Each has two different pieces of business to conduct.
The first person is a woman.
Carlos wants ...
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What numbers do they mean?
There are four nations using different types of numbers in mathematics.
There are:
Nation x: A, B, C, D
Nation y: 1, 2, 3, 4
Nation z: i, ii, iii, iv
Nation t: a, b, c, d
They may not be the same ...
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Whose story doesn't add up? (v3)
"It's been weeks. This is taking too long. We finally rounded up the
four suspects - the four people seen ducking into nearby shops right
around the time of death - got their statements and still ...
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Whose story doesn't add up? [closed]
"It's been weeks. This is taking too long. We finally rounded up the
four suspects, the four people seen ducking into nearby shops right
around the time of death, got their statements and still ...
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Logic grid puzzle with five FBI officers
My friend sent me this puzzle over Discord asking if I could figure it out. I tried for over an hour and I got pretty far but I've hit a bump. The puzzle goes as follows,
There are five colored doors ...
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Least number of marked symbols
I have a 7x7 grid, where I want to find the least amount of "marked positions" so a group of non-marked positions aren't bigger then 4 (only moving up, down, left and right and not diagonal)....
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Logic: Match the Potion to the Drinker
You are known as a great alchemist and potion master, and have spent the past decade developing a series of extremely powerful potions. You have made some great progress, but the potions are not ready ...
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The problem with the five farms
In the spirit of the so-called Einstein Riddle, I think everyone should try to create their own version. So here is mine:
Five farms are next to each other along a country road (like in the next ...
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What is Scenario One and Scenario Two?
(1) In Scenario One the L***** are S****
(2) In Scenario Two the L***** are not I******
(3) No C****** has the same type of people in Scenarios One and Two
(4) The C**** in Scenario One and P***** in ...
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Which city is the bus from?
There are four buses; their origins are the cities of A, B, C, and D. their destinations are the cities of E, F, G, and H.
They park in a gasoline station in a line to get fuel. after a while, they ...
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Who has received a letter about energy?
Four administrators (A, B, C, and D) from a company have written letters about four topics: Energy, Security, Nutrition, and Manpower. Each letter has a unique topic, sender, and receiver.
Information:...
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It's all in the 2's follow-up question
This is in regards to the solution in Slitherlink - It's all in the 2s
I know it may seem dumb, but I don't understand the logic behind the second 2 chain in the solution. To help provide clarity ...
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How can I create written logic puzzles with multiple variables and the fewest number of clues?
When I refer to written logic puzzles, I mean those in which, for example, 5 men wearing 5 different colors of aprons are bringing 5 different pies from 5 different cities to 5 different booths in the ...
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Logic puzzle about six college freshmen
I found some logic puzzles on someone's blog from a few years ago, and have been trying to solve them. Here's the link to the page: https://hedgehogcomms.blogspot.com/2015/04/puzzling-over-logic-...
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Logic grid puzzle
I found some logic puzzles on someone's blog from a few years ago, and have been trying to solve them. Here's the link to the page.
Please let me know if you have any suggestions! I have looked at ...
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The Genius Bank Robber
StackVille Bank & Trust - Robbed!
The Robbery
The bank is being robbed. There are millions in cash in the vault. The lone robber takes the manager to the safe and demands he opens it.
The manager ...
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Pizza and Subs - Delivery Dilemma
The Delivery Dilemma
The local pizza joint delivered pizza and subs. Three employees were hired to deliver: John, Heather, and Luigi.
Based on the following statements:
If John delivered pizza, then ...
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The Team Roster Mystery
Game Day
When the managers of the Tampa Times and St. Pete Sun met for their annual company baseball game, everyone decided by unanimous vote that they wanted a different method of choosing which team ...
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What's the gorilla's address?
There's four houses next to each other, somewhere in suburb Netopia.
Johnny lives in number 3.
The red house is in between the white and yellow houses.
Mickey does not live at the end.
House number 9 ...
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The Coding Contest
A coding competition in Netopia pitted each PHP Programmer contestant against every VB Programmer and C++ Programmer contestant, each VB Programmer contestant against every PHP and C++ contestant, ...
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The Magic LeaderBoard
Every Saturday at Netopia's Square, a peninsula at the tip of southwest Netopia, there is a leaderboard kept of Netopia's Square's six local resident wizards.
(in no particular order)
They are ranked ...
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Old Ladies Day Out
During this unfortunate Corona situation in Stackville the WalMart is closed every Monday, BestBUY is closed every Tuesday, the Liquor Store is closed every Thursday, and the bank is open only on ...
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