Unanswered Questions
68 questions with no upvoted or accepted answers
27
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0
answers
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Is there a move-efficient way to rotate the center pieces on the Octo-Star?
I'm looking for a more efficient algorithm to rotate the center column of the Octo-Star puzzle 45 degrees.
The situation below occurs when four properly-oriented edges are next to each other, ...
- 53
22
votes
0
answers
2k
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REALLY important days in history
@Z. Dailey asks a mathematical puzzle Important days in history... and to come! with a series of dates in years 1973, 1978, 1983, 1992, 2005.
My puzzle asks the question: What is the previous date in ...
- 197
9
votes
0
answers
370
views
My drunken formula?
I know that today is an important day, but I can't remember why... All I have in my possession is this formula I wrote last night in my drunken stupor:
You go here:
$$B = 25 + \biggl(\frac{O}{...
- 10.6k
8
votes
0
answers
524
views
xkcd 2957 - A Crossword Puzzle
The latest xkcd is a crossword puzzle. I thought it might be of interest to this community.
Solve it on Penpa+
Clues:
Across
1 Famous Pvt. Wilhelm quote (10)
11 IPv6 address record (4)
15 “...
- 19.3k
8
votes
0
answers
560
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Ode to a Nightingale: a puzzling study in literary criticism
The field of literary criticism is an interesting and fruitful one, in which puzzlers might carve out a niche. This was recently brought home by a conversation I had with a sagacious old gentleman in ...
- 5,430
8
votes
0
answers
346
views
We found text from the year 2040!
Recently, the first surviving examples of text from the ███████████████e discovered! The unearthed artifacts included a collection of rectangular tablets inscribed in the hitherto unknow███████████████...
- 181
8
votes
0
answers
201
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Is it possible to create a knot that is locked only when the rope is stretched?
Is it possible to create a knot that is stable/locked when the rope is stretched?
When the tension is relived the knot should open.
- 8,333
7
votes
0
answers
264
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Visual Puzzle: The ? Model
What 12 letter word is depicted below? Please explain your reasoning.
Hint:
- 16.4k
7
votes
0
answers
899
views
They are all K-verbs
Find the missing verb.
G: Fold, Break, Pry
D: Reduce, Vibrate, Rob
B: Soak, Subtract, Thrash
J: Sleep, Squeeze, ?
Subtle Hint:
Moderate Hint:
Decisive Hint:
Very Decisive Hint:
- 5,257
7
votes
0
answers
368
views
Do you see the point?
Original puzzle by me.
Remember to always obey your superiors. The first one should be 08594.
Hint:
- 821
7
votes
0
answers
346
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Stress Not! - A North Daniels' Puzzle
Beep, beep, beep, beep...
No, this was not the sound of D.S.I North Daniels playing miniature cricket on his phone, although that would be a preferable situation to the one he is in now.
Unfortunately,...
- 705
6
votes
0
answers
229
views
What string comes next?
What string comes next:
accccfjuyz
fhqsstv
cfgiorttv
cfffgiioorsttuvz
abccffgioorttvz
aabcccdffghimooqrssttvzzz
Hint:
Hint 2:
- 593
6
votes
0
answers
307
views
What song are these lyrics from (translated into emojis) ~ 2
😁👈🤠🐎🎰
👈🎰🗺️🏘️🏘️ / 👈🎰💯⭕
🕰️👉🫱🫲🃏🃏🃏🃏🃏
👉🧠🤠👈🛏️💰👈👇
🛏️💰👈👇 (2x)
I am happy to share this wonderful song with you. You will love driving or doing any travel with this song.
The ...
- 3
6
votes
0
answers
224
views
Light the darkness
The answer is an event in Wikipedia. Find the date.
4️📅🤐⬇️🏪👀(🥘🇵🇭-S)(🎲21+A)🇺🇸
- 1,378
6
votes
0
answers
186
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How many items are there in the lab?
I am looking for how to complete the following question so that it gives a unique solution. Maybe somebody can give a visual solution.
A lab contains experimental equipment. 24 items are ready to use ...
- 117k