OCA Discovery of the Year 2018

For discussion of other cellular automata.
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Rhombic
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Joined: June 1st, 2013, 5:41 pm

OCA Discovery of the Year 2018

Post by Rhombic » January 1st, 2019, 6:46 pm

Happy new year, fellow lifers.
The OCA "D"OTY has certainly not been around that long; if I remember correctly, last year was the first one, organised and its results announced by yours truly.
We followed the same voting system as with the CGoL POTY, which I think worked very well and showed a fairly accurate representation of the general agreement. That is the one star, two stars, three stars voting system (where you can vote for as many candidates as you want).
For reference, here is the voting for the OCA DOTY from last year. Here are the candidates.

General Rules
It is probably good to favour engineered patterns, solved problems or conceptual ideas (such as the winner from last year) and projects that require addressing a challenge. The candidates should either be interesting enough in their own right for any reason (examples from CGoL include Copperhead) or have the potential to make an impact in some way in the future (such as the Snark).

Rules are allowed as candidates. However, please don't mindlessly nominate rules unless they have been VERY prolific and their dynamics have been explored in depth. A good example is Snowflakes, which was part of the competition last year*.


Nominations open until 15/01/2019 00:00 GMT at the earliest.



* It was actually hard to imagine that Snowflakes would have been developed so much during 2018 though! If the main project that was underway with all the SS constructions had been completed by now, it would be a strong contender.
SoL : FreeElectronics : DeadlyEnemies : 6a-ite : Rule X3VI
what is “sesame oil”?

Ian07
Posts: 354
Joined: September 22nd, 2018, 8:48 am

Re: OCA Discovery of the Year 2018

Post by Ian07 » January 1st, 2019, 7:03 pm

I've only really been here for the latter half of the year, but I'd definitely like to nominate AforAmpere's adjustable slope ships.

AforAmpere
Posts: 1050
Joined: July 1st, 2016, 3:58 pm

Re: OCA Discovery of the Year 2018

Post by AforAmpere » January 1st, 2019, 7:05 pm

#02 2718281828's RROs are really cool.

#03 Danny's tlife puffer, and AbhpzTa's ship from it.

#04 Other adjustable ships by AbhpzTa, muzik, wildmyron, 2718281828, and me.

#05 The slowest ships ever, by LittlePeng9, translated into a RULETABLE, and into spaceships by me.
I and wildmyron manage the 5S project, which collects all known spaceship speeds in Isotropic Non-totalistic rules.

Things to work on:
- Find a (7,1)c/8 ship in a Non-totalistic rule
- Finish a rule with ships with period >= f_e_0(n) (in progress)

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77topaz
Posts: 1345
Joined: January 12th, 2018, 9:19 pm

Re: OCA Discovery of the Year 2018

Post by 77topaz » January 2nd, 2019, 12:21 am

I can't really think of many individual OCA patterns that would notable enough besides the already nominated adjustable-slope ships, but there were numerous interesting rules. The ones most fitting the "specifications" would probably be:
Other rules I think would be worth nominating but should maybe be seconded by someone include:
AforAmpere wrote:#04 Other adjustable ships by AbhpzTa, muzik, wildmyron, 2718281828, and me.
Isn't this essentially the same as the "adjustable ships" entry from the 2017 competition (#01)? The #05 entry is pretty similar to 2017's #06, also.

Saka
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Joined: June 19th, 2015, 8:50 pm
Location: In the kingdom of Sultan Hamengkubuwono X

Re: OCA Discovery of the Year 2018

Post by Saka » January 2nd, 2019, 1:16 am

Id like to nominate Wright's bf (esolang) CA, found at
viewtopic.php?f=11&t=3277#p62509
Airy Clave White It Nay

Code: Select all

x = 17, y = 10, rule = B3/S23
b2ob2obo5b2o$11b4obo$2bob3o2bo2b3o$bo3b2o4b2o$o2bo2bob2o3b4o$bob2obo5b
o2b2o$2b2o4bobo2b3o$bo3b5ob2obobo$2bo5bob2o$4bob2o2bobobo!
(Check gen 2)

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Macbi
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Joined: March 29th, 2009, 4:58 am

Re: OCA Discovery of the Year 2018

Post by Macbi » January 2nd, 2019, 4:29 pm


Naszvadi
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Re: OCA Discovery of the Year 2018

Post by Naszvadi » January 2nd, 2019, 6:59 pm

Mine:

Weak Turing-completeness - weak(?er?)-universality - but at least proving logic universality of the following Glider supporting rules with explicit meta unit cell constructions - meta-polyglots, for the first, there is a custom software: Two isotropic rules:

The following one based on some cool results of AbhpzTa from ../forums/viewtopic.php?f=11&t=376&start=725#p55465
LaundryPizza03 published some good logic partials and some gates, and only a gun had been needed as a timer in order to construct a Rule-110 unit cell in rule I propose all of the above merged to an entry.

Remark: AbhpzTa's XOR reaction is especially cool in one of the mentioned rules above.

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Redstoneboi
Posts: 344
Joined: May 14th, 2018, 3:57 am

Re: OCA Discovery of the Year 2018

Post by Redstoneboi » January 5th, 2019, 4:34 am

this JvN loop based replicator, based on fluffykitty's idea, optimized by me:

Code: Select all

x = 12314, y = 21, rule = JvN29
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IMIM2IMI5M3I4M2I2MI5M5IM3IMI5M5I3MI2MJ!
c(>^w^<c)~*
This is 「Fluffy」
「Fluffy」is my sutando.
「Fluffy」has the ability to engineer r e p l i c a t o r s.
「Fluffy」likes to watch spaceship guns in Golly.
「Fluffy」knows Natsuki best girl.

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77topaz
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Re: OCA Discovery of the Year 2018

Post by 77topaz » January 12th, 2019, 6:02 pm

77topaz wrote:Other rules I think would be worth nominating but should maybe be seconded by someone include:
Since there haven't been very many other entries, I've decided I'll nominate these four as well! :)

wildmyron
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Re: OCA Discovery of the Year 2018

Post by wildmyron » January 15th, 2019, 12:30 am

toroidalet's methuselah in a 2-state isotropic rule, estimated by calcyman to last at least 2^2^50 generations. I'm not sure if it's known for certain that the pattern will stabilise, so if that's a problem for the competition then I'd like to nominate the pattern which lasts approximately 3.455*10^532 generations instead.

Edit:

AforAmpere's discovery of 8c/9 spaceships in a 2-state, isotropic rules (without B0) - I believe this is the fastest sub-lightspeed orthogonal spaceship known in this rulespace.
The latest version of the 5S Project contains over 221,000 spaceships. Tabulated pages up to period 160 are available on the LifeWiki.

Naszvadi
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Re: OCA Discovery of the Year 2018

Post by Naszvadi » January 19th, 2019, 4:22 pm

Where can we vote for the above list - don't even know if it is finalized yet?

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Rhombic
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Re: OCA Discovery of the Year 2018

Post by Rhombic » January 19th, 2019, 9:44 pm

Naszvadi wrote:Where can we vote for the above list - don't even know if it is finalized yet?
Sorry, I have been quite busy!!
If nobody has any further suggestions I will create the voting post in about 16 hours or so.
SoL : FreeElectronics : DeadlyEnemies : 6a-ite : Rule X3VI
what is “sesame oil”?

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toroidalet
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Re: OCA Discovery of the Year 2018

Post by toroidalet » January 19th, 2019, 10:26 pm

wildmyron wrote:I'm not sure if it's known for certain that the pattern will stabilise, so if that's a problem for the competition then I'd like to nominate the pattern which lasts approximately 3.455*10^532 generations instead.
I'm pretty sure that it stabilizes due to simulations where the fuses were prematurely terminated, although I haven't run it to completion, even the first part, for obvious reasons. However, I am confident that after the main really long domino pair sequence burns down, it creates another fuse and burns through that. A compromise is the second one posted, which will also stabilise eventually, after somewhere on the order of 2^200,000 generations based on a rough and inaccurate estimate of burning through 100,000 duoplets.
77topaz wrote:Isn't this essentially the same as the "adjustable ships" entry from the 2017 competition (#01)?
I think the main point of this one was the discovery of many new displacements and periods of adjustable ships, culminating in the adjustable-slope ships and the adjustable-displacement ships (2019).

AforAmpere
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Re: OCA Discovery of the Year 2018

Post by AforAmpere » January 19th, 2019, 10:30 pm

toroidalet wrote: I think the main point of this one was the discovery of many new displacements and periods of adjustable ships, culminating in the adjustable-slope ships and the adjustable-displacement ships (2019).
Yeah, I could not have found the adjustable-slope ships without the work done just before it. Unless we want to consider that part of the same nomination as the adjustable slope ships. That is why I nominated all of the other work people had done, which I feel was crucial to the subject as well.
I and wildmyron manage the 5S project, which collects all known spaceship speeds in Isotropic Non-totalistic rules.

Things to work on:
- Find a (7,1)c/8 ship in a Non-totalistic rule
- Finish a rule with ships with period >= f_e_0(n) (in progress)

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Rhombic
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Re: OCA Discovery of the Year 2018

Post by Rhombic » January 28th, 2019, 3:21 pm

I am currently snowed under with work so, if someone else would volunteer to prepare the competition, I would be very grateful.
SoL : FreeElectronics : DeadlyEnemies : 6a-ite : Rule X3VI
what is “sesame oil”?

wildmyron
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Re: OCA Discovery of the Year 2018

Post by wildmyron » January 29th, 2019, 12:23 am

Sorry, not volunteering to prepare the competition, but if it's still possible to nominate a late entry, I'd like to do so: Thanks to Moosey for reminding me about these spaceships.
The latest version of the 5S Project contains over 221,000 spaceships. Tabulated pages up to period 160 are available on the LifeWiki.

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77topaz
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Re: OCA Discovery of the Year 2018

Post by 77topaz » January 29th, 2019, 1:07 am

Rhombic wrote:I am currently snowed under with work so, if someone else would volunteer to prepare the competition, I would be very grateful.
I could do it, especially since I already have a spreadsheet set-up for the CGoL POTY 2018 competition that I could reuse.

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Rhombic
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Re: OCA Discovery of the Year 2018

Post by Rhombic » February 3rd, 2019, 8:06 am

77topaz wrote:
I could do it, especially since I already have a spreadsheet set-up for the CGoL POTY 2018 competition that I could reuse.
Yes please :)
SoL : FreeElectronics : DeadlyEnemies : 6a-ite : Rule X3VI
what is “sesame oil”?

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77topaz
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Re: OCA Discovery of the Year 2018

Post by 77topaz » February 3rd, 2019, 7:51 pm

Okay, then, are we all in agreement to have this be the list of entries?
Unless anyone has any further entries, I'll go ahead and create the voting thread soon.

(EDIT: For some reason I thought Oscar Cunningham was named Alexander. :?)
Last edited by 77topaz on February 3rd, 2019, 10:57 pm, edited 1 time in total.

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Moosey
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Re: OCA Discovery of the Year 2018

Post by Moosey » February 3rd, 2019, 8:02 pm

I would also nominate the dominoplex orthogonoid.
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AforAmpere
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Re: OCA Discovery of the Year 2018

Post by AforAmpere » February 3rd, 2019, 8:24 pm

That was discovered in 2019. Also, I think that list is good 77topaz, unless anyone disagrees. I think everything in this list is great, so it will be hard to decide.
I and wildmyron manage the 5S project, which collects all known spaceship speeds in Isotropic Non-totalistic rules.

Things to work on:
- Find a (7,1)c/8 ship in a Non-totalistic rule
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77topaz
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Re: OCA Discovery of the Year 2018

Post by 77topaz » February 3rd, 2019, 9:19 pm

AforAmpere wrote:That was discovered in 2019. Also, I think that list is good 77topaz, unless anyone disagrees. I think everything in this list is great, so it will be hard to decide.
Okay, I've created the voting thread; it can be found here.

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