« first day (2206 days earlier)      last day (73 days later) » 

1:05 AM
Q: Creating the hardest 7x7 maze

Dmitry KamenetskyThis puzzle is based on Creating the hardest 6x6 maze You are given an empty 7x7 grid. You are allowed to paint some of its cells as walls (black), while the remaining cells stay empty (white). A robot is programmed to start in the centre cell (4th row and column) and visit all the corners^ usin...

1:52 AM
Q: Missing number in a set of four segment circles

Sharanya DuttaThis is a puzzle posted on a social networking site that I have been trying hard since yesterday to solve: My approach has been to find out a mathematical function with the numbers in the yellow, green and purple segments as its arguments and the number in the blue segment as its output. Howev...

1 hour later…
3:11 AM
I scored 365
okay, congratulations?
1 hour later…
4:15 AM
Let us know when it's 365.25
5:02 AM
Q: A mouse and a maze on a n x n grid

u_ndefinedI went back in an old Flash game and was intrigued by this problem. Rules There is an $n\times n$ grid and a mouse entering on the entrance cell and exiting on the exit cell. The entrance cell and the exit cell is found outside on the grid, on the top and bottom side respectively. Y...

5:49 AM
Q: Equipped for sailing

jafe Across 1/13/20. State of Colorado engaged in attempt to pursue mostly American parties, often involving heroin (10,8,2,3,5) 10. "Terminal engineer, too, must… (7) 11. …ultimately possess baby's bed", express fringe writers (7) 12. Exhume and mount decayed body's head (6) 13. (See 1 across) 14. ...

1 hour later…
7:01 AM
Q: The obscure message

John BrookfieldsI created this puzzle. Find the message. q螣 s䈚 q蟝 v쀎 q蟾 q蠸 q襪 q褰 q弧 q螣 q襪 q蛡 q袈 q蟝 Hint 1: Hint 2:

1 hour later…
8:23 AM
ughh, bad timing
jafe's crossword is minutes before the weekly event I have to attend :P
again, I'm still gonna continue it on my own tho
2 hours later…
9:56 AM
aaand done, that took faster than the previous crossword lol
10:13 AM
Q: Fun with Flags part 10: don't lose count

sarsaparillaIn a Formula 1 race, the chequered flag was waved so violently that the black and white patches got mixed up. Who was waving the flag, when and where? Other (independently solvable) puzzles of this type: 1, 2, 3, 4, 5, 6, 7, 8, 9.

11:05 AM
crosswordese word of the day: "runner" meaning "river"
which i suppose is not any more unfair than "flower"
11:25 AM
Q: unsqueeze and paint me!

coredumpTo unsqueeze me, look and say. Paint not with colors but with array. 11131b4d1c 11121015211514 11121015211514 11121015211514 11121015211514 111318193d1c 111019101534 111019101534 111019101534 111019101534 111019101534 111319113d1c I am a 7-digit number. Who am I?

2 hours later…
12:59 PM
Question, I've been absent a couple years - is the Riddle Sandbox still a thing people use or do people usually just post to main for feedback?
1:26 PM
I think latter is done more often than the former, but there's no stopping you from posting in riddle sandbox
1:45 PM
Cool, thanks!
... Though whether anyone will actually see what you post is another matter.
1 hour later…
3:03 PM
@Reibello welcome
forgot to say it HAHAHA
2 hours later…
5:05 PM
Q: Where did I go on this trip?

Beastly GerbilI went on a trip yesterday. However I can't quite remember where I went. All I have is my diary entry for yesterday, but I'm struggling to make out where it was I went still. Maybe you can help? Having arrived at the start, I was ready to start my journey. I found a vessel, and began. ...

5:16 PM
I have no idea if I've got the difficulty right on this one hopefully it's not too easy/hard :P
3 hours later…
8:17 PM
Q: Derive functional form of integer sequence generated by algorithm

Davor JosipovicI'll give the algorithmic way of making the sequence first. Here we go: n is just a helper variable that cuts off the sequence at some point. n = 5 x = (1:n %/% 2)*(-1)^(1:n) y = x Note that %/% indicates integer division. This is how x looks like: > x [1] 0 1 -1 2 -2 Now we cross-join...

9:05 PM
Q: The cryptic treasure hunt

John BrookfieldsI created this puzzle. This may be really challenging. But I assure you that there is a solid logic behind. 1: Ucbemfol.jcancyf 2: Mwamebyr;assdpwhbporcrof; File 3: TrpewylRam File 4: Whagurghfiycaguykytghfgpfarlpf? Hint 1: Hint 2: Hint 3: (Cryptic) My other puzzles can be found...

2 hours later…
10:42 PM
Q: Homeworlds: War Games

QuuxplusoneHere's my second Homeworlds problem! (My first was Homeworlds: Mini Doomsday Machine.) Lee (0,g3b2) y2g1- Ray (1,r2) r2-y3y3y3 DS1 (y1) -y1g3 Y (y2) r1-y1 G (g2) r2-g2 R (r3) g1-r1 B (b3) r1-b1 The stash contains r3r3 y2 g3g2g1 b3b3b2b2b1b1. So... it is down to me, and it is down to you....


« first day (2206 days earlier)      last day (73 days later) »