« first day (1982 days earlier)   

2:34 AM
2
Q: Density type puzzle

JensInspired by this puzzle I decided to make something similar. To warm up, I made something simple. It follows the rules set up by @Dmihawk except for the size: Final answer: (1,6)

 
 
4 hours later…
7:01 AM
0
Q: Double feature: Legal trouble

jafeThis puzzle is part 6 of the Double feature series (first part here). The series will continue in "Double feature: Weightier". Rules of Hitori1 Shade some cells in the grid. No number occurs in more than one unshaded cell on any row or column. Shaded cells cannot be adjace...

 
 
3 hours later…
10:05 AM
0
Q: A visual crack the code puzzle

Yash Kumar Atri Just have this now what are all these acronyms refer to and what is the code ?

0
Q: Help me solve this riddle!

Callum RandleCan you help me figure out what word this riddle is about? "Not spun, or simply woven My skin as smooth as a mirror You stain my face, contort my body I can hold the greatest power And pass it with a glance Yet you are prone to cast me off Without a second thought Although sometimes when...

 
 
1 hour later…
11:06 AM
2
Q: Paint numbers from 1 to 8 with two colours

Dmitry KamenetskyCan you paint every number from 1 to 8 with two colours, such that there are no distinct numbers $a, b, c$ of the same colour with $a+b=c$? For example, you cannot have 2, 3 and 5 of the same colour since $2+3=5$. Good luck!

 
11:47 AM
0
Q: Paint numbers from 1 to 23 with three colours

Dmitry KamenetskyCan you paint every number from 1 to 23 with three colours, such that there are no distinct numbers $𝑎,𝑏,𝑐$ of the same colour with $𝑎+𝑏=𝑐$? For example, you cannot have 2, 3 and 5 of the same colour since 2+3=5. You may need to use a computer to solve this. Here is a similar puzzle for nu...

 
 
2 hours later…
1:28 PM
0
Q: A subset of a subset of a subset of a subset of a set of $\{1,2,\cdots,10\}$

athin There is a set of $10$ first natural numbers, $S = \{1,2,\cdots,10\}$. Alice picks a subset of it, say $A \subseteq S$. Bob picks a subset of it, say $B \subseteq A$. Charlie picks a subset of it, say $C \subseteq B$. Dave picks a subset of it, say $D \subseteq C$. Ho...

 
 
1 hour later…
2:50 PM
0
Q: SAME DIGIT NUMBER PUZZLE

Sayed Mohd AliYou have 5 numbers 1, 9, 3, 5, and 7 you need to arrange these number like Rules create 2 pairs from numbers above keep one of the number in the middle then apply this law 1st pair * last pair - middle number. after arranging and applying the above rules the result should be a num...

 
Avi
3:24 PM
hmmmm
it's been 2 days and nobody has attempted my riddle
should I post a hint?
 
which one?
@Avi
 
feel free to do so ;) @Avi
 
Avi
time to come up with another stanza :(
 
Avi
3:46 PM
D: at this rate I'll forget the perfect solve
let me write it down quickly
then finish the other half of the stanza
 
Avi
4:02 PM
Posted
It's still going to be extremely difficult unless you already know the answer D:
difficult, not extremely difficult* I've seen some of the ones on here and it's not that complex, since there are no red herrings
 
 
3 hours later…
7:28 PM
(is it time for a hint on the CCCC, or not yet?)
 
0
Q: Frequent or rare?

balazs.comWhich common thing do these words have uncommonly in common? mole kiss breath Note, that until you have not found the answer, it helps you find your way back to the real world.

0
Q: What is the objective function of the magic square?

mrmarra98xIf I wanted to describe it as a minimum problem, where I want to identify the minimum value of the constant for a certain matrix order, how should I do it?

 
8:15 PM
4
Q: Hangman game backward #12

AlexTime to get back to Puzzling! Hangman game backward #12 - guess what the question was: fill in "a" - In some area it proves to be a big problem to kids / teens or even adults these day, which potentially does not exists thirty something years ago. fill in "e" - 2, 4 and 6 are the common numbe...

 
 
1 hour later…
9:16 PM
0
Q: Solve the last equation

ChowzenMy brother showed me the following puzzle from some type of (IQ?) quiz game on his phone: 1 + 2 = 21 2 + 3 = 36 3 + 4 = 43 4 + 5 = ?? I am quite sure this was the original question asked. I pondered it for a while and had a few guesses, but none were accepted as "Correct." I als...

 
 
1 hour later…
10:17 PM
0
Q: Is it necessary to state that there is a logician with a blue hat in this 100 logicians puzzle?

RobotWyrmI've been discussing the logic puzzle where 100 logicians, all wearing blue hats, are trapped in a room and told: they can leave when a bell rings if they know they know they are wearing a blue hat, they are all perfect logicians and at least one of them is wearing a blue hat. The bell rings eve...

 
10:58 PM
1
Q: Density type puzzle 2

JensHere's another puzzle of this type. Perhaps my next one will be complex enough to require the full $72$ x $72$ size. Final answer: (5,2,5)

 

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