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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118 views

Help with a program to solve Einstein's Riddle [closed]

I have been trying to write a program (just for fun) to solve Einstein’s Riddle, see https://play.google.com/store/apps/details?id=com.rottzgames.logic. My solution basically does this: It creates an ...
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1answer
155 views

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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1answer
106 views

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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1answer
182 views

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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1answer
353 views

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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1answer
257 views

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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1answer
119 views

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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142 views

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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210 views

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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Logical puzzle from a math homework for Russian fifth-year school students

The daughter of a relative of mine, a fifth-year school student in Russia, got the following math homework from her teacher: Here's my translation: Logical task No. 26. Students were solving a task ...
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1answer
242 views

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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906 views

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 ...
4
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1answer
283 views

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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2answers
277 views

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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163 views

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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151 views

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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108 views

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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570 views

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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1answer
182 views

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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1answer
114 views

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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1answer
242 views

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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1answer
188 views

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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1answer
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Puzzle of the day - three in one Sudoku?

A three in one sudoku. Have fun
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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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1answer
301 views

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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121 views

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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2answers
143 views

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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1answer
139 views

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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1answer
107 views

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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1answer
235 views

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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Diamond Division - Splitting up this found treasure

The Discovery One day while on an adventure, a great treasure was found in the Tenretni Cave by an Adventure Group known as Tenehtfrus. The treasure chest had beautiful diamonds in it. It was a ...
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1answer
122 views

You Talkin' To Me?

Five long time friends whose given names were Johnny, Vinny, Frankie, Mickey, and Bobby, and whose last names in one order or another were Morino, Bucci, Orsini, Palmacci, and Galino, although living ...
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1answer
142 views

Pizza Positioning Puzzle

Seating Arrangements Me ( I'm Johnny) and my brothers Vinny, Mickey, Smitty, Gino, and Pauly always take the same seat when we have our weekly pizza party at our favorite Pizza place - and we always ...
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768 views

Murder Mystery - Murder at The StackO Ave Tavern

Murder at The StackO Ave Tavern Each Saturday Night the local bar, "The StackO Ave Tavern", hosted a Poker Party. And each week, me and three of my buddies attended the event. Until this ...
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1answer
138 views

Setka Puzzle - Complete grid using clues and sudoku-style logic; Tom Hanks

Theme: Tom Hanks This is a Setka puzzle; you can find more (along with a more detailed explanation of the rules) at our website, linked from our profile. How to play Setka, the short version: ...
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161 views

Great POTW Bake-Off

Pepper, Belle, Emerson, and Ralphie have just competed in POTW’s Annual Bake-Off. Pepper, Belle, Emerson, and Ralphie each came in first, second, third, or fourth in the competition. There were no ...
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94 views

How can I find which sport/hobby corresponds to which friend when a set of given clues is provided?

Marina, Mike, Roger, Phillip and Justin has each only one hobby from the following list: motocross, badminton, swimming, athletics and karate, but not necessarily in that order. It is known that: ...
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2answers
147 views

How can I find which person belongs to a specific occupation when the clues involve degree of friendship or acquaintance?

The riddle is as follows: Brenda, Lara, Mie and Nancy have each one profession. These professions are, baker, graphics designer, photographer and cosmetologist. But not necessarily in that ...
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1answer
71 views

Setka - Complete grid using clues and sudoku-style logic; Theme - Fear Itself

This is a Setka puzzle; you can find more (along with a more detailed explanation of the rules) at our website, linked from our profile. Theme: Fear Itself How to play Setka, the short version: ...
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1answer
156 views

Puzzle - Snow Day Event

Daisy, Delilah, Donny, and Duke have each decided to participate in the snowperson building event. In decorating their snowperson, each of them has chosen a different colour of the scarf from purple, ...
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1answer
340 views

Montague Island Mysteries Logic-Grid Puzzles

I'm working through the logic-grid puzzles in the book called "Montague Island Mysteries" by R. Wayne Schmittberger. The particular puzzle I'm on is Puzzle 5.3 where breakfast guests choose food ...
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Stuck - Favorite TV Show Logic grid (repost) [duplicate]

I was asked to repost and offer the source. I found this on:https://slideplayer.com/slide/8573924/ Four friends (Al, Gary, Mike, & Roger) each have a favorite TV show. Oddly enough, while the ...
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3answers
162 views

Stuck - Favorite TV Show Logic grid

Four friends (Al, Gary, Mike, & Roger) each have a favorite TV show. Oddly enough, while the four are close friends, their interest in TV shows is so different that none of the friends has the ...
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1answer
349 views

Lenny’s Logical Internship

Lenny recently applied for an internship at Logicorp™, a company built around using logical reasoning to solve any sort of problems their clients face. The interview was long and difficult, and Lenny ...
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2answers
485 views

Setka - Complete grid using clues and sudoku-style logic; Theme - Halftime

This is a Setka puzzle; you can find more (along with a more detailed explanation of the rules) at our website, linked from our profile. How to play Setka, the short version: Answer each clue using ...
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247 views

What is the answer? [closed]

Question 2 If two words are next to each other, they must share at least one letter and not be the same length. There are six words below and the word on the far left is "CAT." Place all the words in ...
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1answer
210 views

Circular arrangement with professions and age based puzzle [closed]

Eight people, named A, B, C, D, E, F, G, and H; who work as a dancer, singer, lawyer, painter, doctor, teacher, architect, and professor; are 25, 40, 45, 29, 66, 24, 21, and 34 years old; although ...