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hey, i examined this rule almost 4 years ago, in /forums/viewtopic.php?p=162133#p154145 (the thread for B3ai4/S23; many patterns discovered there will be polyglottic to the +S6a version, see also my page User:DroneBetter/B3ai4/S23 with a pattern collection) :mrgreen:

(thank you to hotcrystal0 for ...

i decided to turn some modern search programs to User:Ultimium/LeapLife Spaceship Search Status Page , and in the process found a c/5d half-barberpole phoenickstretcher(phoenix-wickstretcher portmantleauplife) which doesn't seem to have been discussed here thus far.

the wiki mentions a c/4d ...

some stator reductions to Sokwe's signal loops (that are trivial to minimise with present-day tools) for posterity/citation purposes:

(What in the 10-year necropost? :o )
How did you do those? With a script? If so, which one? AFAIK, Sokwe's stator reducer only works for B3/S23.

I use CGOL ...

some stator reductions to Sokwe's signal loops (that are trivial to minimise with present-day tools) for posterity/citation purposes:

x = 100, y = 88, rule = B3/S234
52b2o$51bo2bo2b2o$50bob2obo2bo$50bo4b3o$43b2o3b2ob5o5bo$43bo2b3obo3bo
4b3o$42b2ob2o5b2o2bo2bo2b2o$45bo5b2ob3o3bo2b3o ...

on 2026-02-21 at 00:40:03 UTC, siffrin normal discovered siffrin's p103 , beating out the previous SKOP (180-cell dependent-syringe-based adjustable glider loop) with only 68 cells.
x = 42, y = 42, rule = B3/S23
15bo$14bobo$15bo6$15b3o$15b2obo$15b2o2bo$16bob2o$15b3o2$bo$obo5b3obo$bo6b5o$8bo3bo ...

Is there a better p10 that could fit to reduce guntrue_1550 more? (4224 -> 3968)

x = 62, y = 63, rule = B3/S23
41bo3b2ob2o$40bobobobobo$39bo2bobo3bo$40b3obo3bob2o$40bo2b2obobobobo$35b2o7bobobo3bo$35bobo7b2o2bo2b2o$36b2o5bo3b3o3bo$37bo5b4o6bob2o$31b2o8b2o4bo4b2obo$31bo4b2o4bob3o6bo3bo2bo ...

hello amling ^^

Sokwe (not themself knowing) suggested I ask you how to go about setting up an LLSSS search whose end is not an agar but a specific slice

in particular, I am still wanting a c/4d in Day & Night's chequerboard dual (containing a bubble of ordinary Day & Night universe inside it, so ...

some things in Day & Night that I think would be promising

no 2c/7d is known in Day & Night, and the highest symmetric diagonal width searched up to is 23 half-diagonals (took 17498s in rlifesrc to obtain this partial)
..oo.oooo...
.ooo.oooooo..
oooo.o.ooo..o.
ooo.o.ooooo.o..
...o.ooo.oooo...
ooo ...

nickpoyntz (from the Catagolue comments) synthesised the quadruple eater 2 ( xs52_br0raar0rbzqr0raar0rq ; stabilisation of single unit of the tablecloth agar) in 50 gliders on March 9, which it seems hadn't propagated to here
I found a (manual, doubtless still optimisable) reduction of the cleanup ...

some more results from another year of occasional sporadic searching:
the thinnest possible c/3, which seems to be the smallest of any speed by population x = 22, y = 7, rule = B35678/S4678
3b3o2b6o2b3o$b5ob3o2b3ob5o$b7o6b7o$ob2obo3bo2bo3bob2obo$bob5o6b5obo$bobo14bobo$4b2o10b2o!
[[ TRACK 0 -1/3 ...

small c/4 that I think went under the radar x = 10, y = 9, rule = B34/S35
b3o2b3o$bo2b2o2bo$bobo2bobo$10o$b3o2b3o$2o6b2o$3b4o$4bo$4bo!
[[ TRACK 0 -1/4 ]]
more interestingly, first known 2c/5 at w27o (the thinnest possible symmetric) and 962 cells (the shortest possible at its width) x = 27, y = 119 ...

I'm afraid LLSSS in non-floating width mode is not exhaustive for symmetrical diagonals.

My copy (cloned at 2025-02-21) terminates with no spaceships found with the command ./rlife llsss --rule 'B3/S12' --left-edge odd --filters wcaf c4d-f2b @zero:12 in 75 seconds; the search area is 24 half ...

I rigged up the G label weights and @maxpop and pushed it all. Perhaps consider it provisional while we decide if we like it.

Now the original search up-thread can be run as:


$ rlife llsss-recentering-wao c3-f2b '@maxpop:asym' --max-pop 00:30 --ends none XX

this command seems to break when ...

B/S235 has W110 stripe; 32x128 tile
with help from a slightly smaller crossover component (from redstoneboi/shatterbox in the lounge) and a lot of rearrangement, it can be reduced to 17×51! x = 70, y = 136, rule = B/S235:T0,136
17bobo2bo8b2o4b2o2b3ob9o$16b3ob2obobob2obobo9bobo9bo2b2o ...

two new speeds found!
221-cell smallest glide-symmetric c/6d by bounding box (among the thinnest at 18 half-diagonals) with a forked front, and likewise 33-cell symmetric c/7d (at 13 h.d.), both found with rlifesrc. x = 56, y = 46, rule = B34/S35
38b4o$39b3o$37bo3bo$35bobo$36bob2o$34bo2b2o7bo ...

Not sure where to post this, but here is a list of potentially-apgsearchable OT rules. This list is neither complete nor accurate (with regards to apgsearchability of each rule)*. [...]

To do this, I used Golly to generate 64 50%-filled 16x16 soups in every one of the 2^14 rules where the lowest ...

[...] now there's a variant with just fishhook eaters replacing the Catalysts of Complication (xs16_8o1vg4cz23). 80G, I think:
x = 1518, y = 211, rule = B3/S23
415bo$416bo$414b3o6$1198bo$1199bo$1197b3o2$1208bo$1209bo$1207b3o23$1211bo4bo$1212bo4bo$1210b3o2b3o6$1325bo$1324bo$745bo578b3o$743b2o ...

some news about Gray counter s over the past ~year

in a Shinjuku contribution from 2024-01-14, xs18_039u08kcz2521 (which can be converted in 2 gliders to xs17_039u08k8z2521 , then in 5 to xs18_25a8c8a52zx252 , in 4 to xs22_8k80j2ak8zw19l91 and in 9 to xp4_wgiligz25a888a52zx252 (the Gray counter ...

longest 2c/5 w28e and w29o partials found with rlifesrc x = 28, y = 86, rule = B34ar5in/S2i3-i4-nwz5ceny6cei7e8
.......oooo.oooo.oooo.......$
......oo.o.o....o.o.oo......$
......o....oo..oo....o......$
....o.oo.oooo..oooo.oo.o....$
...oooo.o..oooooo..o.oooo...$
...o....o....oo....o....o...$
....ooo ...

shortest w11o c/11 (Cole's page said w10e was more promising than w9o, maybe w12e will lead to a smaller one) x = 11, y = 130, rule = B34ar5in/S2i3-i4-nwz5ceny6cei7e8
b2o5b2o$b2o5b2o2$4o3b4o$b2o5b2o$4o3b4o$3bo3bo$ob2o3b2obo$bo2bobo2bo$b3o3b3o2$b3o3b3o$bo3bo3bo$bobo3bobo$4bobo2$bo2b3o2bo$2b3ob3o ...

What I believe are the smallest known examples of each irreducible speed:
x = 342, y = 81, rule = B3678/S34678
b4ob2o12bo8bo17b2o2b2o2b2o16bo5bo10b4o6b4o7bo4bobo4bo8bo2bo5bo2bo12bo11bo5bo14b2o14b3o2b3o13b3o15b2o30b2o27b3o2b2o21bo ...

collection of 2c/4's; Cole's original, gutter-preserving and odd glide, and even symmetric/glide, all minimal-width (per both qfind and rlifesrc) x = 123, y = 26, rule = B34ar5in/S2i3-i4-nwz5ceny6cei7e8
86b4o21b2o$84b3o2b3o17b6o$5b4o14b4o7b4o14b4o9b4o14b2o2b2o2b2o14b2ob2obob2o ...

I have expanded Cole's table for this rule in User:H. H. P. M. P. Cole/qfind results to include a gutter-symmetric column and distinguish strictness, and found some more things

new entries of existing speed/period: c/3 strict w9o and w9g, 2c/6 w11g, 3c/9 w6a, c/5 strict w13o, 2c/10 w6a and w13g, c ...

I am not sure I follow, perhaps an example and how you imagine it going when run would help?
50P9 has a small rotor and a large stator; in the case of wanting to weld multiple, one would be able to input a significantly smaller pattern (with constant cells placed in the neighburhood of all non ...

Moosey wrote: August 7th, 2024, 11:54 am@drone just to keep to the facts: this was a different user actually

oh dear, due to its repeated quotation I had assumed the message to be a Cole message that I couldn't find due to a deletion from Cole or a moderator, sorry