Unanswered Questions
31 questions with no upvoted or accepted answers
12
votes
0
answers
1k
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Hidden message in rap text II: "Ya, a ray 'ave july joy!"
This puzzle is inspired by this one by @LukasRotter. Hopefully you don't mind me using similar (well, basically the same) format as yours, Mr. Rotter! ;)
The same rapper released another teaser for ...
- 346
9
votes
1
answer
2k
views
Is there another name for this puzzle? (Kyudoku, Nine Find)
Is there another name for this type of puzzle? I can only find two examples of it online:
https://www.brainzilla.com/logic/kyudoku/
http://ninefind.com/
In the game you start with a 6x6 grid filled ...
CommunityBot
- 1
8
votes
1
answer
564
views
An endless succession of harmless checks
Similarly to my previous chess instalment, this puzzle continues to explore the underlying geometry to be found in a sequence of consecutive checks. This time however, we will ditch the limiting ...
CommunityBot
- 1
8
votes
0
answers
302
views
Doubling the cube with rational Meccano strips
In three monographs published in 2006, 2008 and 2014 Gerard 't Hooft considered "Meccano mathematics": how to construct specified distances and regular polygons by a rigid system of ideal ...
- 10.2k
7
votes
1
answer
1k
views
Name and solution of puzzle to rotate all arrows to same direction
In this puzzle, when you click an arrow, all arrows immediately next to it (diagonally included), as well as the arrow you clicked itself rotate 90 degrees. The goal is to get all the of arrows to ...
CommunityBot
- 1
6
votes
0
answers
309
views
Connect dots on a grid with one continuous line (optimization)
(This question is the third puzzle of the Connect dots puzzle series. You can find the first two puzzles here and here, respectively.
The original question and photos originate from webadventurer. ...
- 1,173
6
votes
0
answers
223
views
Can you construct a nonagon with 47 rods?
Stiv's Diabolical Instruments now offers a bundle of exactly 47 equal-length rods that can be joined by hinges at their ends – and only the ends – to form planar linkages (i.e. all hinge axes are ...
- 10.2k
6
votes
0
answers
302
views
Trying to find a 2020 puzzle hunt with a puzzle based on Among Us
I am trying to find a puzzle hunt that I believe was held in 2020. It contained a puzzle based on the game Among Us with 26 characters, and you had to decide who were the imposters. The imposters all ...
- 10.9k
6
votes
0
answers
320
views
Looking for a kid's puzzle, cannot remember title
I'm looking for a kids' logical puzzle I saw in a Brazilian puzzle magazine several years ago. A farmer had a square farm with four houses and twelve trees and he wanted to divide it between his four ...
- 35.8k
5
votes
0
answers
175
views
Wooden puzzle with multiple balls on strings attached to a central hook, from which metal arms connect top and bottom
I bought this puzzle few years ago at a market. I couldn't solve it since. I started to think it was wrongly assembled, therefore can not be solved. Tried to find the solution on the internet/YouTube ...
- 10.9k
4
votes
0
answers
263
views
Identify this PC Puzzle game I played as a child?
Platform(s): I played this on Windows, probably 97 or XP
Genre: Point and click puzzle game
Estimated year of release: Definitely before 2008, probably before 2005, I would estimate late 90s- mid ...
- 10.9k
4
votes
0
answers
189
views
Odd one's out (sequence)
Once upon a time, there was a curious mathematician named Friedrich. One day, while exploring a new area of mathematics, he stumbled upon an intriguing sequence of numbers:
0, 1, 2, 2, 4, 3, 3, 4, 4, ...
- 63
4
votes
0
answers
296
views
Is there a name for crosswords where the surface of the vertical clues resemble the solutions to the horizontal and vice versa?
Occasionally a crossword (often cryptic ones) would have a twist to them, such as being a 'nina':
A Nina is a special feature of the crossword grid: a word, words or phrase hidden within a pattern of ...
- 2,805
4
votes
0
answers
374
views
Do minecart puzzles like this, with buttons that rotate track, exist?
This is the end result of me messing around with minecarts and moving floors.
The buttons change the orientation of either their nearest or their same-color track. Now I'm not asking you to solve the ...
- 143
4
votes
0
answers
175
views
Does anybody know the history of this star/triangle puzzle?
Does anybody know the history of the puzzle posted by Mario Bilotti? Who created this puzzle? Who deserves the credit?
Find 10 triangles in a five pointed star using two straight lines
- 10.9k