Search Results
| Search type | Search syntax |
|---|---|
| Tags | [tag] |
| Exact | "words here" |
| Author |
user:1234 user:me (yours) |
| Score |
score:3 (3+) score:0 (none) |
| Answers |
answers:3 (3+) answers:0 (none) isaccepted:yes hasaccepted:no inquestion:1234 |
| Views | views:250 |
| Code | code:"if (foo != bar)" |
| Sections |
title:apples body:"apples oranges" |
| URL | url:"*.example.com" |
| Saves | in:saves |
| Status |
closed:yes duplicate:no migrated:no wiki:no |
| Types |
is:question is:answer |
| Exclude |
-[tag] -apples |
| For more details on advanced search visit our help page | |
Results tagged with logical-deduction
Search options not deleted
user 80061
A puzzle that requires formal logical deduction to arrive at the solution. This suggests more than merely reasoning through clues to find an answer (you might want [situation] for that).
4
votes
Who stole the cake?
In answering this question, I have made a number of assumptions:
A) That the cake was stolen by exactly one person.
B) The thief was one of five people interviewed.
C) That the lies spoken are actuall …
- 21.3k
2
votes
1
answer
184
views
When Mo and Bo met Jo, Mo asked, “Are Bo and I both negative?” What can be deduced about Mo ...
Beginner puzzle (suitable for people who are new to puzzle solving).
A certain city has two types of people: the ‘positives’, who only ask questions for which the correct answer is “yes” and the ‘neg …
- 21.3k
10
votes
6
answers
3k
views
Knights and knaves not on an island
On a fictional island there were two types of people: knights who always told the truth, and knaves, who always lied. They got irritated by people asking them so many questions so they all moved to a …
- 21.3k
1
vote
Looking for the name of a specific numerical logic puzzle. Involves swapping digits for shapes
You can find some of these puzzles here:
https://puzzling.stackexchange.com/questions/tagged/alphametic
- 21.3k
-1
votes
1
answer
286
views
Benny, Denny, Kenny and Lenny: Who lies and who tells the truth?
To allow new users to solve this puzzle and earn reputation points, I encourage all users whose reputation is 200 or more to not post an answer until 48 hours after this question is posted. Thank you! …
- 21.3k
11
votes
2
answers
2k
views
How many Friends are there in the circle?
On the island of Friends and Foes, every citizen is either a Friend (who always tells the truth) or a Foe (who always lies). Seven citizens are sitting in a circle. Each declares “I am sitting between …
- 21.3k
9
votes
2
answers
489
views
Three of my Find-the-stars puzzles
Find-the-stars instructions:
A Find-the-stars puzzle is played on a square grid that is initially empty except some squares contain arrows.
The goal of the puzzle is to fill some empty squares with st …
- 21.3k
6
votes
1
answer
252
views
My Fill-the-circles puzzles (Set # 1)
In each puzzle, fill the circles with the numbers 1, 2, 3, ... n, where n is the number of circles in such a way that consecutive numbers are NOT in circles that are joined with a line.
- 21.3k
3
votes
1
answer
196
views
My Fill-the-circles puzzles (Set #2)
In each puzzle, fill the circles with the numbers 1, 2, 3, ... n, where n is the number of circles in such a way that consecutive numbers are NOT in circles that are joined with a line.
I designed all …
- 21.3k
2
votes
1
answer
146
views
My Fill-the-circles puzzles (Set #3)
In each puzzle, fill the circles with the numbers 1, 2, 3, ... n, where n is the number of circles in such a way that consecutive numbers are NOT in circles that are joined by a line.
- 21.3k
4
votes
1
answer
218
views
Fill the circles with the numbers 4, 5, 6, ... 10
Using all the numbers 4, 5, 6, ... 10 exactly once, fill each empty circle with a number so that if two numbers are in circles that are joined by a line then their difference (in absolute value) is at …
- 21.3k
4
votes
3
answers
838
views
Eliminate some numbers so that each of the three rows contains the numbers 1 through 9 each ...
Beginner puzzle
This puzzle is intended to be suitable for people who are new to puzzle solving.
Clarification: Both experienced solvers and new solvers are welcome to post solutions to this puzzle.
…
- 21.3k
0
votes
1
answer
196
views
Identify the truth teller, the liar and the spy
Beginner puzzle
This puzzle is intended to be suitable for people who are new to puzzle solving.
Clarification: Both experienced solvers and new solvers are welcome to post solutions to this puzzle.
…
- 21.3k
0
votes
1
answer
201
views
How many of the four Knaves were telling the truth?
Beginner puzzle
This puzzle is intended to be suitable for people who are new to puzzle solving.
Clarification: Both experienced solvers and new solvers are welcome to post solutions to this puzzle.
…
- 21.3k
32
votes
2
answers
2k
views
What is the color of the final disc(s)?
A bag contains 7 red discs, 8 blue discs and 9 yellow discs. Two discs are drawn at random from the bag. If the discs are the same colour then they are put back into the bag. However, if the discs are …
- 21.3k