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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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Binary Bob's Programming Language Puzzle

Binary Bob Needs Your Assistance Bob's Dilemma Binary Bob is considering going back to school to learn computer programming, however, Bob has been given some jumbled course information. Bob needs ...
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Shopping Spree - Simple Logic Puzzle

The Hello World of Grid Based Logic Puzzles Shopping Spree Bill and Mary went shopping. They brought home a TV, and a new Tablet, one cost 100, the other 200. One transaction was paid in cash, the ...
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Can you help our Puzzle Heroe's with their amnesia?

DISASTER HAS STRUCK!!! Our Stack O' Puzzle Heroe's have amnesia! It happened last night, when each one of the puzzle heroes' arch-nemesis defeated them all by giving them all AMNESIA! They all lost ...
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Logic grid puzzle question: What can I infer from these two negative matches?

I recently ran across a "hint" on a logic puzzle that left me even more puzzled than before. In this puzzle: The hint says that the two negative matches for "Brown" should tell me something about "...
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344 views

Thieves and coffee

A thief has stolen people's coffees, and switched around the prices. Can you help the store manager? These people want a refund. Try to find out which person ordered which coffee, and the ...
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1answer
218 views

5 ferries, their capacities and ticket price

Five ferries - King's Way, Speedster, Sea Monster, Astar and Blue Surfer operate to Manuchan Island. The capacities of these ferries are 25, 30, 40, 50 and 60, not necessarily in the same order. Each ...
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1answer
129 views

A Tournament to Remember

The King: Recently we had a big tournament, worth being immortalized in the chronicles of my kingdom. Unfortunately, the court scribe misplaced the record of the final event, and we need to restore it....
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0answers
190 views

Looking for a logic game 5 people 5 cities

I am looking for a logic game where there are 5 people and 5 cities. They have to travel around the 5 cities but in each city there can only be one person. They move around but they can never be in ...
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1answer
255 views

What two numbers need to be removed?

What two numbers need to be removed? The first one from the left circle, the second one from the right.
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1answer
312 views

A Grave Issue Discovered

In the town of Fairfield (There are 35 Fairfield's in America), there is a graveyard. In 1874, the mayor, Arthur Hither, declared that 25 new graves be created, in a square. Five years later, he was ...
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2answers
453 views

Who owned each heirloom?

At the dinner party were Lady Winslow, Doctor Marcolla, Countess Contee, Madam Natsiou and Baroness Finch. The women sat in a row. They all wore different colors and Doctor Marcolla wore a jaunty ...
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141 views

How to solve this problem easily and quickly [duplicate]

I am unable to make the arrangements when the condition with NOT are given (for example : R does not like cream and black color). Please provide me a way/solution in which such conditions can be ...
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14 crosses in a 6 by 6 grid

Can you put 14 crosses in a 6 by 6 grid so that there are an even number of crosses on each row and column? An elementary school teacher asked me for help with this. Below is a photo of the book they ...
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2answers
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Find the Distance

The distances from you to some certain cities are written below: BERLIN 200 miles PARIS 300 miles ROME 400 miles AMSTERDAM 300 miles CARDIFF ??? miles ...
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1answer
675 views

A murder mystery I’ll host at a bar

I’m hosting game night at my regular bar, and I’m gong to stage a murder mystery. Each of the suspect will make 4 statements, one of which is known to be a lie. I tried to construct it as soundly as ...
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2answers
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Who killed Boggs? A chandelier’s view

Source: Condensed from "Murder Ink" by Dilys Winn Boggs has been found dead in the club lounge, his iced tea poisoned. Four men, seated on a sofa and two chairs in front of the fireplace, are ...
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2answers
2k views

Cat Breeds - Logic Grid Puzzle

You can play this game here: https://www.brainzilla.com/logic/logic-grid/cat-breeds/ Also available as PDF here. Figure out the age and favorite food of four cats from different breeds. Each cat is ...
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3answers
1k views

Interesting logic puzzle grid problem

Here is a very challenging logic deduction puzzle This is not for a graded homework assignment, however it was given to me by a professor for fun. If you post an answer, please discuss how you ...
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2answers
949 views

Logic Puzzle from the International Space Station

Here is a logic puzzle I can't solve. Can someone please help me to solve it?
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1answer
214 views

The Gardener's Route

Tell me the method for solving such grid problems in detail. I need a solution for The Gardener's problem.Tell me any method to construct the grid.
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1answer
1k views

Floor arrangement based puzzle with two variables

I am trying to solve a mathematical arrangement based puzzle and not able to do it, need help of you guys. Question is relevant to competitive exams in India. Here is the puzzle:- M, N, O, P, Q, ...
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2answers
2k views

How do I reduce a negative hint with multiple possibilities?

This is a hypothetical question about grid-style logic puzzles. I know that when there are positive clues, you reduce the puzzle by eliminating possibilities that don't come in pairs; for example, if ...
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1answer
932 views

Grid based color changing puzzle

I am trying to identify the minigame used in the game Fontanero (the code for it is here). It consists of a 3x3 grid of squares, and each square is red or green. You can click on a square to invert ...
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5answers
956 views

logic game - how would you solve it?

We had the annual team-building event last Thursday, and one of the activities involved solving the logic game/puzzle I transcribed below - which, as I just learned, is similar to the 'Zebra puzzle' ...
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Find the missing number : [closed]

Find the missing number in the following table. Answer Options are: 25 27 32 30
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1answer
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Beating at Eating, a logic-grid puzzle for literal logicians

$\begin{array}{r|lll} &\text{Name}&\text{Surname}&\text{Dessert}\\ 1&\text{Agatha}&\text{Greed}&\text{cream puffs}\\ 2&\text{Bugsy}&\text{Forager}&\text{trifle}\\ 3&...
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1answer
296 views

How the snake laid down in the ground

This my puzzle is inspired by this puzzle. A sleeping snake has 36 consecutively numbered segments. It is hidden in a 6x6 gridded square ground. Each snake's segment fits exactly in 1 grid square. ...
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2answers
249 views

Equivalent Grids

The two grids below are essentially equivalent. A specific color belongs to a specific catagory (four solid colors). Exception is the center box with 2 colors. Should be easy to fill out all the boxes ...
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1answer
576 views

Days and Lectures logic puzzle

A school is organizing guest lectures on three different subjects: Robotics English General Aptitude The event is taking place over three days.The eight lectures are named P,Q,R,S,T,U,V and W, ...
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363 views

Floor arrangement in persons and pet

I have tried this puzzle, but getting possibilities are more First I have placed the positive scenarios in the floor arrangement Q Lives on the floor 5 and top most floor is parrot Then i arranged ...
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1answer
356 views

Floppies puzzle

This is one of those grid puzzles that I simply cannot fix. Here is the puzzle: One of the most popular features of the children's TV show Pumpernickel Place is the antics of the Floppies, ...
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1answer
929 views

Hardware Store - Logic grid, zebra puzzle style

You can play it online here: https://www.brainzilla.com/logic/zebra/hardware-store/ ...
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1answer
205 views

Conference Topics Puzzle

Tom and four others spoke at a recent astrophysics conference, each presenting a paper on a different topic. Can you find the order in which the five talks were given, the full name of each speaker (...
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4answers
1k views

Art Accident at Airport!

There was an accident at the airport! A hanging art installation fell and landed on some passengers. In addition to tearing up all their tickets and mixing up their luggage, six people sustained ...
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2answers
663 views

Fill the squares with the right tetrominoes

Fill the squares with the right tetrominoes, so each tetromino contains numbers 1 to 4. Example :
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1answer
537 views

solving a logic grid puzzle

This is a puzzle from mysterymaster. Five students of twentieth-century literature (Oscar, Peter, Shirley, and two women named Ruth) elected to write their term papers each on a different work of ...
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1answer
758 views

Difference grid

Rule : A cross sign means one rectangle's number is the multiple of another one. A line sign means one rectangle's number is adjacent to another one. Example : The Puzzle : The numbers must be ...
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1answer
232 views

Baggage Mishap Puzzle

This is a puzzle from Braingle: Savannah got distracted when her shuttle arrived at Earth Central Airport. Now she's at Lost & Found with four other travelers all waiting to retrieve one lost ...
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3answers
1k views

Introducing Domidoku!

Come one, come all! Come see the new type of logic puzzle, the Domidoku! Here's a sample for all to try! The process is simple! First you solve the Sudoku and then you solve the Dominosa! ...
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Travel Agency - A Zebra Puzzle (Einstein's Riddle) variation

You can play it online here: https://www.brainzilla.com/logic/zebra/travel-agency/ ...
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1answer
265 views

Five coins on a 15x15 board

[Note: this puzzle is derived from a coding contest question at HackerRank. The question is no longer in active use there. It was originally posted with content copied-and-pasted directly from there, ...
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1answer
365 views

Raven's matrices

Is anyone able to solve this matrix? It came up on a practice aptitude test I'm taking and this one in particular had me stumped. Thanks!
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1answer
2k views

Meeting Room - a harder variation of the classic Zebra Puzzle

You can play it online here: https://www.brainzilla.com/logic/zebra/meeting-room/ ...
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2answers
295 views

Adventure of LALO : Open the Stargate Portal

While exploring a remote island under the project "Search for Knowledge Program", Archaeologist "LALO" has found a hidden stargate which will open a portal to the Knowledge Dimension. In order to ...
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4answers
726 views

Logic problem about five thieves

The teacher of my nephew (15y) proposed the following puzzle to the students. I solved it, but I found it extremely difficult, in particular for teenagers. Perhaps there is a simpler solution than ...
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3answers
1k views

A Day at the Zoo

You find a note on your door when returning home. It tells you to check your email and find the hidden message. Upon inspection, there is a mysterious email in your inbox. From: ...
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1answer
1k views

How do I solve this logic puzzle?

I am trying to improve my logical thinking and I came across this puzzle problem. I need some help solving the puzzle below. Two weeks ago, four enthusiasts made sightings of objects in the sky in ...
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3answers
386 views

The mysterious theft in the Nigerian ship

The Nigerian captain Abomeli Iweala was carrying his ship across the Atlantic Ocean, taking with him five foreigners who worked for him. One day the alarm bell rang, and when the captain arrived he ...
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4answers
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Trick or Treating in Trutham-And-Ly

An entry in the 19th fortnightly challenge... Trutham-And-Ly, you may remember, is a small town in the north of Logistan. It is divided into two districts, Trutham and Ly, separated by a small stream....
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2answers
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Can you solve the 7x7 (sudoku-ish) centered sums puzzle

I have come across this puzzle a few times in competitions and rally's, and it has troubled me because I cannot seem to find a good approach to solving it, either programmatically or numerically. And ...