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28 May, 2018 @ 2:20pm
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armin.rigo
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Description
Make a very long chain of various metals. The basic materials are the classic ones, but the problem is to know exactly which kind of metal to put where. This information is encoded inside another very long reagent, of the same length. The number of Air atoms over each Salt atom is equal to the number of times the Lead must be transmuted.

Yes I know the information could in theory be re-encoded in the instructions, but the length makes it impractical. If tempted, imagine that this length is not 42 but 250. The puzzle is actually generated by a Python script picking random numbers. I tried with lengths greater than 42 at first, but it takes too long to run the puzzle to completion...
22 Comments
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garr890354839 13 Oct, 2022 @ 3:25pm 
@emlun I figured out a method that just sets up for up to 5 extra atoms up top. The fact that they are air atoms makes no difference, I just make it deal with the potential 5 atoms, then discard what is left.
Haxton 18 Dec, 2021 @ 6:20pm 
Full throughput: 620/2577/473 [imgur.com]
emlun 30 Aug, 2021 @ 4:56pm 
Very cool puzzle! I might take some inspiration from this to make something similar...

My first (successful) attempt clocks in at 480G / 4292C / 1895A but cheats a bit by discarding the reagents into an infinite chain after reading them.

@garr890354839 Think about if there's something you can do that behaves differently depending on whether there's an atom present or not.
garr890354839 12 Jan, 2021 @ 8:41pm 
How do you not hard-code something like this?
sirenhound 12 Jul, 2020 @ 4:26am 
I got the general case down to 555/4561/424 https://i.imgur.com/r6T1emq.gifv
Then I improved it to make a tighter gif 570/4553/418 https://i.imgur.com/cU61fwL.gifv
Then I figured I could save money by ditching the obliterator and going with an infinite tail.
I saved 40g but paid for it with a huge increase in area (and huge decrease in frame rate)
530/4553/1309
Dendrite 22 Jun, 2020 @ 10:53am 
@armin.rigo yeah, I found an alternative editor on github, that worked.
armin.rigo  [author] 22 Jun, 2020 @ 1:40am 
@FractalusRex: in general, using the "ompuzzle" web editor. In this case, it's a custom Python script that produces the puzzle file directly: https://gist.github.com/arigo/cc4c014d473e4621293094801ce67f8c
Dendrite 21 Jun, 2020 @ 2:01pm 
Looks interesting.

One question though, how do you get the product requirement and the reagent to be that large? The editor only allows up to a width of 9, right?
Hoshtog Swog 11 Jun, 2020 @ 5:09am 
I got it 430/9628/539 for arbitrary inputs, and 175/1504/59 by cheating and hard-coding it, I love this puzzle!
Genuine. [cdn.discordapp.com]
Cheating [cdn.discordapp.com]
Topomouse 29 May, 2020 @ 2:30pm 
This was a very interesting puzzle. It took me a while and looking at other people solutions to understand what was asked since I did not think it was possible to do this.
I think this helped me really undestand what a Turing-Complete mechanism is.