25CFFGHJNRSSUXXYZacgnrsuy <--- 25 ASCII characters

.n. .a. .a. .a. .a. 466
.b. .b. .b. .b. .F. 413
.c. .c. .S. .c. .c. 422
.d. .Y. .d. .d. .d. 392
.e. .e. .e. .X. .e. 476
451 477 449 343 449

If you get them in the right places aaaaa, bbbbb, ccccc, ddddd, eeeee will be giveaway codes (eg
http://www.steamgifts.com/giveaway/aaaaa)

Edit: Each of the 25 ASCII characters goes in one location, the numbers give you a clue what goes where.

Edit2: Ends around 6:40pm 9th April.

Edits: I've added characters to the grid.

Edit: The numbers show you what the characters in each row & column add up to.

Edit: Added 5 (or 6) characters, at least one from each column & row.

12 years ago*

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My mind is full of fuck

12 years ago
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+1

12 years ago
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wtf?

12 years ago
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I know ASCII and this doesn't make any sense to me

12 years ago
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I have no idea what I'm reading.

EDIT: Okay, I actually get part of it. It's awkward and pretty unlikely that anyone will get this, but hey. I can try.

12 years ago
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I would agree, how do we know what order to put them in?

12 years ago
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The numbers tell you

12 years ago
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I see now, easier to see if you imagine a grid

12 years ago
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fuck, i never understand these encoding decoding puzzles >.<

12 years ago
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Know dem feelz.

12 years ago
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Interesting, I think I know what to do. Now if only I weren't so lazy. :-] Thanks!

(Oh man, why did I have to forget everything I knew about constrained programming in Prolog...)

12 years ago
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Just to make sure:

451 477 449 343 449

449 comes twice, this is intended or is it a typo?

12 years ago
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its intended

12 years ago
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[removed]

[do not spoil]

12 years ago
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Thanks for the puzzle, but I feel the numbers needs to be changed first.. no idea what I'm doing X.x

12 years ago
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AzureKyte has written the easiest part, the hardest part is to put the numbers in a grid correctly, like in a sudoku puzzle. I've put some lines together, but I'm too lazy to finish it and check. You also have to convert the dec values to hex to form a correct CD key template, I guess. So gl guys.

12 years ago
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I'll try it but please tell me it's not Lucid or Faerie Solitaire x5...

12 years ago
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They're all Steam inventory items (not keys or bundles). One almost has an Easter theme.

12 years ago
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Chuckie Egg?

12 years ago
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i think you'd be proud of the Google spreadsheet i've made... it even makes the URLs for me! :P
but i still haven't solved it yet and dunno if i'll have time... i shoulda written a program instead of the spreadsheet, I think.

12 years ago
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first puzzle where i know what to do xD but im too lazy now :P

12 years ago
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+1

12 years ago
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meh too easy solving now

scratch that... not that easy but solving
... aaand am stuck ...

aaand unstucked by edit 3

12 years ago
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u wrote "Ends around 6:40pm 9th April." -- but what time zone? I'd appreciate the answer, because I'm too lazy now to solve ur "puzzle" ;)

12 years ago
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SteamGift's timezone. It says another 20 hours.

12 years ago
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I've solved it, everything adds up to what it's supposed to but none of the codes are valid. So it would appear that there are multiple solutions or you've made a mistake somewhere when you made it.

12 years ago
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multiple solutions seems likely when you look at the raw numbers: 3'160'080 combinations to match 9 sums and bruteforcing will take some time

12 years ago
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Yeah this is VERY hard.

12 years ago
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You haven't defined enough parameters - multiple valid solutions exist. I've found a few that solve the conditions given fine but do not yield valid codes (even ignoring the order 2 degeneracy from the columns). Ah, the joys of linear algebra...

12 years ago
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I would say that one from each row/column should make it a lot easier to solve with the intended answers

12 years ago
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+1

12 years ago
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man, it is like solving sudoku without any numbers in the grid....

btw can u solve it urself with only one letter?

12 years ago
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I don't think you realize how hard this is..

12 years ago
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"Larger cases are really difficult to solve. For example, as far as I know, nobody knows the number of essentially different 5 × 5, uniquely solvable open [Puzzle name here]. For the 4 × 4 case, the corresponding number is 5327 according to enumeration made by [Guys name here]."

12 years ago
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Looks tough, but I'll give it a a go, thanks.

12 years ago
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Not close to solving it, but liking this. Nice puzzle :)

12 years ago
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Thanks for the puzzle :)
Not close to solving it but trying.

12 years ago
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I have 1488 possible combinations. LOL

12 years ago
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you know.... crap this i got work tomorow
500k+ possible possitions

871 = S
but it makes no sense

12 years ago
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Closed 12 years ago by TheGreatGooglyMoogly.