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1500 questions
26
votes
9 answers
A single word - what am I?
A musician oft rehearsed
Together with his part reversed
But he was not himself as such
A single word - two's much too much
abligh
- 1,067
- 7
- 13
26
votes
4 answers
This image contains a "Great Discovery"
The Puzzle:
Source material taken from here
As discussed on Numberphile, here is John Herschel's doodle, sent to his friend Charles Babbage.
John H.
John Herschel was an English polymath, mathematician, astronomer, chemist, inventor, and…
Ovi
- 403
- 3
- 7
26
votes
8 answers
How many cubes can we fit in?
You have a bag with many 3x3 Rubik's cubes . After solving all but one of them, you decide to play a new game.
You take the unsolved cube, and start placing solved ones around it.
The question: What is the maximum number of solved cubes that can…
ABcDexter
- 7,262
- 4
- 42
- 84
26
votes
4 answers
Reverse Puzzling 4
[This continues prior Reverse Puzzling here, here and here]
George rubbed his hands together with glee. "So this is Andrea's puzzle, is it?"
"Yes," I answered. "It's the first of them, anyway."
"It's not very big, so it shouldn't be too hard. How…
Dr Xorile
- 23,406
- 3
- 47
- 125
26
votes
4 answers
Many feet - can you tell me my name?
Consider the following:
One foot
Three feet
Four feet
These are (in no particular order): my purpose, what I am, and what I have. Wait, one of those is a misspelling!
Can you tell me my name?
Tonkleton
- 1,985
- 13
- 24
26
votes
2 answers
A Puzzle That Marches Swiftly To The Median
James Bond enters M's office.
BOND: I came as quickly as I could, sir. What's the emergency?
M: It's those fiendish SMERSH agents again. They've stolen my chess pieces.
BOND: They've stolen *what* now?
M: And they've hidden them…
Hugh Meyers
- 23,712
- 1
- 52
- 171
26
votes
1 answer
Gate To Enlightenment
Here we are. The hidden entrance to the headquarters of the forgotten Brotherhood of Maat.
Won't budge.
At least the door matches the old sketch from the manuscript.
I'll bet these two seals I found nearby can shed some light on the…
Yehuda Shapira
- 1,659
- 12
- 25
26
votes
1 answer
What is James's middle name?
There once was a man called James
who liked to use different names
If you're slick and astute
by removing the fruit
your favorite flava remains
What was his middle name?
jhabbott
- 2,728
- 13
- 23
26
votes
1 answer
Is there an algorithm to decide that the nonogram puzzle is unique
A good nonogram puzzle has a unique solution. However, some nonograms do not. For example, this puzzle:
211
1311231
1
3
2 1
1 1
1 2
3
1
Has at least two solutions, shown below:
211
…
Xwtek
- 584
- 4
- 13
26
votes
3 answers
Tell me who I am: To lead, she leads, daughter my
I am not married, but a daughter have I
And to lead, she leads, daughter my
I was part of the li'l boy that once rocked history
I am just you, I ain't a mystery
Who am I?
iamwhoiam
- 1,348
- 14
- 26
26
votes
2 answers
Where has the last dollar gone?
Lately I have found different versions of this puzzle, I was wondering if it has a name or belongs to a specific kind, so that I can understand it better.
Here it is:
Peter got \$10 from his father, \$10 from his mother and went to buy some
…
abx78
- 371
- 2
- 6
26
votes
5 answers
Famous Last Words (or Escape the Concatenation Camp)
Word War II has been raging for years, and many innocent words have been rounded up into concatenation camps (which is certainly a death sentence). Thus far, you've managed to evade detection but many of your friends have not been so lucky.
Though…
Alconja
- 37,250
- 16
- 116
- 164
26
votes
1 answer
Find the number code in the picture
This puzzle belongs to the puzzle series: hyper-modern art
The two friends in the gallery of hyper-modern art are moving on to the next room.
"My head still aches from the colourful pixels under this microscope. Could we take a little rest…
BmyGuest
- 18,141
- 1
- 69
- 147
26
votes
6 answers
Maze Solving Robot
Archie the archeologist has discovered an Egyptian temple, and plans to send in a robot to explore it. He uncovered the ancient engineers' papyruses which explain almost everything about the temple's layout. However, the engineers left out one…
Mike Earnest
- 32,336
- 6
- 92
- 237
26
votes
2 answers
Mathematical Rebus II
Mathematical Rebus I
Mathematical Rebus III
$$\det\frac{\partial(x,y)}{\partial(r,\varphi)}\\
\sum_{n=2}^\infty \ddot{\frac{t^n}{n!}} $$
Masclins
- 2,726
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- 39