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L.A. Noire Giveaway: SOLVED ALREADY, FIRST CONTACT ASSURED

Donkey KongDonkey Kong Putting Nintendo out of business with AI nipsRegistered User regular
edited May 2011 in Debate and/or Discourse
WINNER FOUND :
GenlyAi
Solution submitted at 10:44AM forum time

Runners up:
Irond Will - 12:00 PM
Nytewarrior - 12:09 PM

Thanks to everyone who participated!
The official explanation and solution will be posted in a spoiler below.
Alien Math Homework

ATTENTION CITIZEN,

I am Dr. S, lead investigator for NASA's Extraterrestrial Contact Taskforce. We have an urgent matter that requires the attention of all who might be of assistance. One of our researchers has intercepted what appears to be the math homework of a young extraterrestrial, vacationing with his family on Europa. Unfortunately, the youngster has failed to answer two of the questions on his assignment! Details from the transmission suggest that such omissions mean the little slacker will need immediate tutoring back on his home planet, cutting his family's vacation short and eliminating any chance we have to assemble a first contact mission.

We must decode this homework assignment, fill in the gaps, and retransmit before our chance to join the intergalactic community slips away!

The decoded transmission follows. Please help us. We will make it worth your while with a copy of L.A. Noire, the cinematic detective mystery game by Team Bondi and Rockstar Games. A $50 value!

Sincerely,
Dr. Jet Starman
NASA Extraterrestrial Task Force

BEGIN HOMEWORK ASSIGNMENT TRANSMISSION
PART 1: COMPLETED PROBLEMS
e1.png
e2.png
e3.png
e4.png
e5.png
e6.png
e7b.png
e8.png

PART 2: INCOMPLETE PROBLEMS
p1.png
p2.png

SUBMISSION:
Send me, Donkey Kong, your solutions to the two incomplete problems by Private Message. If you are the first to provide the correct solutions, you will win a copy of L.A. Noire for XBox 360. Limit: One solution PM per 8 hours (to prevent guessing, my box from filling up). If you send two in a row, the second will still count, but I'll pretend like I didn't get it for another 8 hours. Feel free to discuss the puzzle publicly in this thread but keep in mind that everyone reading is your competition.

Feel free to make an image solution or use text in a format like this, with dashes indicating blanks:
RG
-R
G-

RULES:
Offer valid only in the United States and Canada. (There may be a slight delay shipping to Canada) XBox 360 version. Item will be shipped as soon as possible. Puzzle may be adjusted if errors are found or the difficulty is too high.

Thousands of hot, local singles are waiting to play at bubbulon.com.
Donkey Kong on

Posts

  • JacobkoshJacobkosh Gamble a stamp. I can show you how to be a real man!Moderator mod
    edited May 2011
    If anyone's curious, Donkey Kong has obtained mod permission to post this. This is completely legit.

    Jacobkosh on
  • FeralFeral MEMETICHARIZARD interior crocodile alligator ⇔ ǝɹʇɐǝɥʇ ǝᴉʌoɯ ʇǝloɹʌǝɥɔ ɐ ǝʌᴉɹp ᴉRegistered User regular
    edited May 2011
    I don't care too much about the Xbox game, but I'm interested in the puzzle.

    I understand all the operations except this one. I think that if I can figure this piece out, I'll have the solution.

    e4.png

    I'm not sure what happens when two red tiles in the same location are added. I see what happens when you add two green tiles when the green tiles are in a corner location, but not when they're in the middle of a column.

    So this example is introducing two new operations simultaneously and it is befuddling me.

    Feral on
    every person who doesn't like an acquired taste always seems to think everyone who likes it is faking it. it should be an official fallacy.

    the "no true scotch man" fallacy.
  • emnmnmeemnmnme Registered User regular
    edited May 2011
    It must not have anything to do adding the on/off red/green tiles even though there's a plus sign in between the tile sets.

    emnmnme on
  • DasUberEdwardDasUberEdward Registered User regular
    edited May 2011
    Good thing I don't have a 360 or else i'd spend all day on this.

    DasUberEdward on
    steam_sig.png
  • FeralFeral MEMETICHARIZARD interior crocodile alligator ⇔ ǝɹʇɐǝɥʇ ǝᴉʌoɯ ʇǝloɹʌǝɥɔ ɐ ǝʌᴉɹp ᴉRegistered User regular
    edited May 2011
    I don't want the game and I'm still gonna spend all day on this!

    Feral on
    every person who doesn't like an acquired taste always seems to think everyone who likes it is faking it. it should be an official fallacy.

    the "no true scotch man" fallacy.
  • OrganichuOrganichu poops peesRegistered User regular
    edited May 2011
    win and then give the game to me!

    every conditional value i try just makes my head hurt and i'm guessing the solution's actually more difficult than the rules and methods i'm imagining

    Organichu on
  • DeebaserDeebaser on my way to work in a suit and a tie Ahhhh...come on fucking guyRegistered User regular
    edited May 2011
    Last time I solved a puzzle like this I was conscripted by the intergalactic math club to fight the evil derivitors of Sohcahtopia.

    Pass

    Deebaser on
  • Donkey KongDonkey Kong Putting Nintendo out of business with AI nips Registered User regular
    edited May 2011
    Something I might have made clearer in an example that is just now occurring to me.

    FIRST HINT:
    Alien addition is commutative
    A+B=B+A

    Donkey Kong on
    Thousands of hot, local singles are waiting to play at bubbulon.com.
  • emnmnmeemnmnme Registered User regular
    edited May 2011
    My guess now is it's like Roman numerals where you substitute letters for numbers, except here you substitute the position and color of a tile for a number.

    emnmnme on
  • emnmnmeemnmnme Registered User regular
    edited May 2011
    We won't let you down, Dr. Jet Starman!

    emnmnme on
  • One Thousand CablesOne Thousand Cables An absence of thought Registered User regular
    edited May 2011
    Good lord, trying to figure this out makes me feel so stupid.

    Edit: I blame the schools. They should teach more alien math.

    One Thousand Cables on
  • emnmnmeemnmnme Registered User regular
    edited May 2011
    The figures on the far right of these equations are sums, right? Like, this isn't a crazy version of Lights Out but we're actually adding quantities together ... yes? Because figure 7 is baffling. Solid grid of greens seems like the greatest (or smallest) quantity possible.

    emnmnme on
  • SyrdonSyrdon Registered User regular
    edited May 2011
    Every time I try to run these I seem to get stuck around figure 6 or 7. I think I can make at least some of the last two work if I assume that red implies a decimal shift, but then figures 1 and 2 break down. It looks like it might be basically position based addition, but I can't make that work in my head right now.

    edit: I think we have to assume that the operators given are the correct operators, although we should note that they may function oddly. For example, when I add "foo" and "bar", should I get 6 charecters or 3 ("foobar" or whatever adding their numeric position in the alphabet generates for letters).

    Syrdon on
  • mrflippymrflippy Registered User regular
    edited May 2011
    I keep getting hung up on the fact that we're assuming this is math, when in fact it could be something completely different because we're dealing with aliens here you know.

    mrflippy on
  • emnmnmeemnmnme Registered User regular
    edited May 2011
    mrflippy wrote: »
    I keep getting hung up on the fact that we're assuming this is math, when in fact it could be something completely different because we're dealing with aliens here you know.

    Does adding 3 lower left Greens equal one mid right green?

    emnmnme on
  • mrflippymrflippy Registered User regular
    edited May 2011
    emnmnme wrote: »
    mrflippy wrote: »
    I keep getting hung up on the fact that we're assuming this is math, when in fact it could be something completely different because we're dealing with aliens here you know.

    Does 3 lower left Greens equal one mid right green?

    As far as I can tell, yes.

    mrflippy on
  • Munkus BeaverMunkus Beaver You don't have to attend every argument you are invited to. Philosophy: Stoicism. Politics: Democratic SocialistRegistered User, ClubPA regular
    edited May 2011
    Oh God.

    I figured it out, but I don't have enough time to figure it out.

    Munkus Beaver on
    Humor can be dissected as a frog can, but dies in the process.
  • emnmnmeemnmnme Registered User regular
    edited May 2011
    mrflippy wrote: »
    emnmnme wrote: »
    mrflippy wrote: »
    I keep getting hung up on the fact that we're assuming this is math, when in fact it could be something completely different because we're dealing with aliens here you know.

    Does 3 lower left Greens equal one mid right green?

    As far as I can tell, yes.

    Then it's math. We just have to decode what the symbols mean. I'm still thinking Roman numerals.

    emnmnme on
  • Munkus BeaverMunkus Beaver You don't have to attend every argument you are invited to. Philosophy: Stoicism. Politics: Democratic SocialistRegistered User, ClubPA regular
    edited May 2011
    I don't have time to do this so.

    Each square represents a number. Green is positive, red is negative, white is null. Bottom left is 1, middle right is 3. Middle left is 3 times the value of upper right.

    Cheers!

    EDIT: Also, middle left is the highest number on the board.

    Munkus Beaver on
    Humor can be dissected as a frog can, but dies in the process.
  • emnmnmeemnmnme Registered User regular
    edited May 2011
    I don't have time to do this so.

    Each square represents a number. Green is positive, red is negative, white is null. Bottom left is 1, middle right is 3. Middle left is 3 times the value of upper right.

    Cheers!

    EDIT: Also, middle left is the highest number on the board.

    That doesn't work for figure 7, which starts with all tiles as solid green.

    emnmnme on
  • Donkey KongDonkey Kong Putting Nintendo out of business with AI nips Registered User regular
    edited May 2011
    SECOND HINT:
    All greens is the highest value, if you want to look at it that way. There is nothing wrong with solved example 7.

    Donkey Kong on
    Thousands of hot, local singles are waiting to play at bubbulon.com.
  • Donkey KongDonkey Kong Putting Nintendo out of business with AI nips Registered User regular
    edited May 2011
    Congrats to GenlyAi, who submitted a correct solution at 10:44AM forum time.

    Thanks to everyone who participated. I didn't imagine it would be over in under 4 hours!

    Donkey Kong on
    Thousands of hot, local singles are waiting to play at bubbulon.com.
  • FeralFeral MEMETICHARIZARD interior crocodile alligator ⇔ ǝɹʇɐǝɥʇ ǝᴉʌoɯ ʇǝloɹʌǝɥɔ ɐ ǝʌᴉɹp ᴉRegistered User regular
    edited May 2011
    Congrats to GenlyAi, who submitted a correct solution at 10:44AM forum time.

    Thanks to everyone who participated. I didn't imagine it would be over in under 4 hours!

    Would you post a key.... or explanation?

    Feral on
    every person who doesn't like an acquired taste always seems to think everyone who likes it is faking it. it should be an official fallacy.

    the "no true scotch man" fallacy.
  • Donkey KongDonkey Kong Putting Nintendo out of business with AI nips Registered User regular
    edited May 2011
    Solution:
    There are a bunch of ways to look at it but here is the simplest to explain:

    Each position in the grid represents a value. Its color is its sign. White means zero. The number represented by each grid is the sum of its components. This is the official key:
    solution1.png

    However, given the nature of the problem, any multiple of these numbers will work. In fact, the whole problem is underdetermined by the number of clues given (as our winner noticed), so there are a very large number of possible solutions. The GenlyAI's winning solution wasn't even the official one:

    GenlyAI.png

    It does, however, conform to every clue and properly resolve the relations in the final two unsolved questions.

    Addendum: The official solution is actually wrong due to... and don't hit me, a problem with clue number 7. I've inserted a revised clue 7 into the OP for history's sake. Please note that Genly's solution works despite this flaw. I verified it independently. Note that for his to work, you must consider the original clue 7:
    e7.png

    Donkey Kong on
    Thousands of hot, local singles are waiting to play at bubbulon.com.
  • SentretSentret Registered User regular
    edited May 2011
    Hrm. That is a little frustrating. When I came to the point in the process where I realized there were multiple possible choices for the top left and bottom left cell, I assumed that I was missing something, rather than that the problem was solved.

    These aliens must have a very difficult time doing science.

    Sentret on
  • tuxkamentuxkamen really took this picture. Registered User regular
    edited May 2011
    EDIT: Ignore me. I should ignore myself, too.

    tuxkamen on

    Games: Ad Astra Per Phalla | Choose Your Own Phalla
    Thus, the others all die before tuxkamen dies to the vote. Hence, tuxkamen survives, village victory.
    3DS: 2406-5451-5770
  • Donkey KongDonkey Kong Putting Nintendo out of business with AI nips Registered User regular
    edited May 2011
    tuxkamen wrote: »
    whatever was here before the edit

    Yes, you can locate my shame in an addendum to the solution. Genly's solution, however, does solve all the clues, 7 included, and resolve the problems.

    Sentret:
    A solution does exist (or at least should have if the original clue #7 had been correct) where the number system defines all integers in its range. Regardless, any solution that works would have been fine.

    Donkey Kong on
    Thousands of hot, local singles are waiting to play at bubbulon.com.
  • tuxkamentuxkamen really took this picture. Registered User regular
    edited May 2011
    Suddenly things become clear.

    (I was a little surprised that my notes from this morning were suddenly incorrect.)

    tuxkamen on

    Games: Ad Astra Per Phalla | Choose Your Own Phalla
    Thus, the others all die before tuxkamen dies to the vote. Hence, tuxkamen survives, village victory.
    3DS: 2406-5451-5770
  • mrflippymrflippy Registered User regular
    edited May 2011
    I guess I shouldn't have spent so much time working with #7...

    mrflippy on
  • Donkey KongDonkey Kong Putting Nintendo out of business with AI nips Registered User regular
    edited May 2011
    Yeah, bonus points all around to GenlyAI for finding a working solution to the problem as given when I didn't even have one!

    And more to Irond Will for not only coming up with the official solution but also pointing out exactly where clue 7 was broken.

    Donkey Kong on
    Thousands of hot, local singles are waiting to play at bubbulon.com.
  • GenlyAiGenlyAi Registered User regular
    edited May 2011
    Sentret wrote: »
    Hrm. That is a little frustrating. When I came to the point in the process where I realized there were multiple possible choices for the top left and bottom left cell, I assumed that I was missing something, rather than that the problem was solved.

    These aliens must have a very difficult time doing science.

    I got to a similar point myself, but then decided "fuck it", and chose one arbitrarily. If it weren't for my well-developed sense of arbitraricity, I can't imagine where I'd be in this crazy life.

    GenlyAi on
  • SentretSentret Registered User regular
    edited May 2011
    Victory goes to the bold. Congrats by the way. :)

    Sentret on
  • Fizban140Fizban140 Registered User, __BANNED USERS regular
    edited May 2011
    Anyone care to explain what the hell is going on? How do you solve something like that, what is it? Is it even math?

    Looking at it as far as I can tell green is positive and red is negative, blank is 0? I have no idea.

    Fizban140 on
  • Solomaxwell6Solomaxwell6 Registered User regular
    edited May 2011
    Fizban140 wrote: »
    Anyone care to explain what the hell is going on? How do you solve something like that, what is it? Is it even math?

    Looking at it as far as I can tell green is positive and red is negative, blank is 0? I have no idea.

    Donkey Kong posted a solution on the previous page. For the steps to actually solve it:
    First you have to realize that each square represents a certain value. A green is positive number and a red is negative number. White means that space isn't counted.

    Let's think of the values as variables:
    ab
    cd
    ef

    So you look at the completed problems and see
    1. 0 + e = e <- Not particularly helpful, but it's a hint to the right direction
    2. e + -e = 0 <- Again, just a hint
    3. e + e = d-e <-Here's something that can actually help. Let's use a little math on this.
    3. e+e+e=d
    3. 3e=d <- So now we have the workings of a solution! I arbitrarily assigned the values e=1 and d=3 at this point. It turns out that that does work out and is part of the official solution. If I got stuck, I would've gone back and just continued using them as variables.
    4. d-e + d-e = d+e <- Not very helpful if you've already figured out what's going on, but it helps to confirm the rules of the game. My first guess for how the game works (ternary, with green=n and red=2n) failed on this part.
    4. 2d -2e = d+e
    4. d = 3e
    4. 3 = 3

    And you basically go through each of the problems like that. I had to make another arbitrary choice for a (selected 9, since it looked like a ternary variant by that point). The thing that helped me come to the "official" solution rather than picking another arbitrary value was how much it reminded me of negabinary. It's not quite the same thing, but similar enough to really help me make the mental leap towards "weird negative ternary thing." This numbering system probably has an official name, but I've never heard of it before.


    DK: Thanks! I unfortunately arrived at this way after the contest ended, but it was fun to figure out! I got it really quickly, but only because my second guess about how it worked was spot on.

    Solomaxwell6 on
  • Fizban140Fizban140 Registered User, __BANNED USERS regular
    edited May 2011
    Is there a name for this and is anything like this taught in a math class? Seems kind of like a matrix I guess. Just trying to figure out a systematic way to solve it but it feels like a lot of trial and error.

    Fizban140 on
  • SageinaRageSageinaRage Registered User regular
    edited May 2011
    I guess at it's core it's a very convoluted algebra. The positions don't mean anything beyond the values, and the colors are just plus/minus. So you could convert the whole thing into algebra strings.

    To actually find that it's just algebra, yeah, lots of trial and error. That's how math proofs are made.

    SageinaRage on
    sig.gif
  • GenlyAiGenlyAi Registered User regular
    edited May 2011
    Yup, that's how I approached it as well. Use the first few to take a guess at the system, then write down equations for the rest, solving for the "value" of each square. You find that you still have a couple degrees of freedom after doing this, so I just picked some arbitrary values and moved on.

    One thing a couple people have implied but nobody's said explicitly is that that the two numbers you need to represent for the answers can't necessarily be represented for a given valid solution of the "clue" equations. According to DK, what makes the official solution special is that it can represent every integer over its range. In that sense, I was lucky that I picked a solution where the answers could be represented.

    GenlyAi on
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