4:27 AM
C4 hint 3: The answer isn't in Qat. But a search reveals that it does appear in a number of reports and scientific papers. It seems most of them have to do with nutrition.

2 hours later…
6:23 AM
i'm getting increasingly confident that it's de + [some word for "layer"] + (e)d

3 hours later…
8:54 AM
@msh210 DESTARKED?

@DanielS YMMV but I don't see anything promising at that link. Anyway, that's not my intended solution.
The word I'm thinking of is significantly more common than that.

9:31 AM
more common than destarked doesn't exactly narrow it down
hmm maybe it's just [some word for "layer" starting with DE] + ED and the def is simply "with layers"

9:53 AM
@Jafe heh, true

3 hours later…
12:36 PM
0

I consider it an amazing though very challenging puzzle: 1 2 3 4 5 = 5 4 3 2 1 One must insert exactly five pluses (i.e. five addition signs) somewhere between those ten displayed figures in such way that it becomes a true mathematical equality. Also, you can't rearrange/transpose the figures; no...

12:59 PM
0

How many times does the digit \$0\$ occur in the list of numbers from \$1\$ to \$10^{100}\$, inclusive? Computers are allowed, but can you solve it without one?

2 hours later…
2:55 PM
-2

Combine digits you have into numbers and perform mathematical operations with them to get the rest of the digits. You may use all mathematical operations. You start with 0. Example: You have digits 0, 1, 8. You perform the following operation: 10 - 8 = 2. You have obtained 2. Rules: You may us...

1 hour later…
4:12 PM
Words that might mean something like "with layers rubbed away", and fit the clues: DESQUAMED, DEMUCOSED.
DEBRIDED seems promising, but is only 8 letters (and is in Qat).
I can't figure out any wordplay that might fit with these, though.
Also DELIBRATED (10 letters).
DESKINNED can mean both "removed the outer layer" and "dethroned".
DENUDATED is a good one, but it is in Qat.

1 hour later…
6:01 PM
DIMINUTED could be the solution, if you look at it as a double-def. Something with layers rubbed away is made smaller, and the fourth book of A Song of Ice and Fire was reportedly cut down significantly from its original length... #GraspingAtStraws
Although I'm not at all convinced that "Ice and Fire" in the C4 has anything to do with A Game of Thrones.

6:31 PM
None of the aforementioned is my intended solution. This is, however, a ddef.

6:50 PM
0

This puzzle is part of the Puzzling Stack Exchange Advent Calendar 2023. The accepted answer to this question will be awarded a bounty worth 50 reputation.< Previous Door Next Door > It's the annual charity softball game at the North Pole. With this year's game falling on December 6 - Finnish Ind...

@msh210 The solution is DEBRANNED. (A Feast for Crows, the fourth book in the Song of Ice and Fire series, does not feature one of the main characters, Bran, at all.)

7:36 PM
0

I'm wondering if it is possible to make a 3x8 grid using 6 tetrominoes, 2 Is, 2 Ls a Z skew and square tetronimoe. I believe it may be impossible but would like to know why. Thank you

7:59 PM
@GentlePurpleRain It is indeed. Well done.

8:19 PM
CCCC: 15 yards is a league? (3)

8:50 PM
@GentlePurpleRain assuming the ? will allow us to split up the 1 and 5, we're looking at I + V + Y (as in the ivy league)

9:10 PM
@juicifer Correct.
And I figured if one can do things like "demigods" clueing GO (half of GODS), then 15 could clue I V, and the space is not necessary.

CCCC: 1,100 yards is distant (3)

i + c + y :)

yup!

9:26 PM
@Sphinx does anyone know if the solution provided is unique for this problem?

1 hour later…
10:46 PM
CCCC: Art gallery they left unfinished following 1900 opening (3,7)