Still Life Synthesis Thread

For discussion of specific patterns or specific families of patterns in Conway's Game of Life, both newly-discovered and well-known.
J-NF373
Posts: 8
Joined: February 19th, 2026, 1:48 pm
Location: Bonerville, Antarctica
Contact:

Re: Still Life Synthesis Thread

Post by J-NF373 »

4glider synthesis for bakery

Code: Select all

4bobo$4b2o$5bo$7bobo$8b2o$8bo2$3o$2bo$bo9b3o$11bo$12bo!
:D J-NF373 :D
User avatar
johamwit
Posts: 115
Joined: September 12th, 2021, 6:58 am

Re: Still Life Synthesis Thread

Post by johamwit »

J-NF373 wrote: April 26th, 2026, 9:21 am 4glider synthesis for bakery

Code: Select all

4bobo$4b2o$5bo$7bobo$8b2o$8bo2$3o$2bo$bo9b3o$11bo$12bo!
Uh… teleportation needed
Oh my God! -- it's full of search space!
User avatar
synperiplanar
Posts: 258
Joined: February 22nd, 2023, 4:01 pm
Location: Haha sometimes

Re: Still Life Synthesis Thread

Post by synperiplanar »

Timelord Missionary wrote: March 13th, 2026, 4:00 pm
I6_I6 wrote: March 13th, 2026, 3:36 pm xs35_039e0u1lmzxcab43z6513 in 9G from soup:

Code: Select all

x = 103, y = 33, rule = B3/S23
85bo$84bo$84b3o2$82bo$83bo8bo$81b3o9b2o$92b2o$102bo$100b2o$101b2o$93b
o$93b2o$92bobo$2bo$2o$b2o$81b2o11bo$81b2o10bobo$2bo90bobo$2b2o90bo$bo
bo4$66bo$66b2o$65bobo3$32b2o$32bobo$32bo!
Nice find! Isn't the right object at generation 42 a variation of Get_SmackeTWO's profile pic?

Code: Select all

x = 26, y = 36, rule = B3/S23
$8b2o$8bobo$9bobo$11b2o$5b3obo$4bob2obo9b2o$4bo5bo7bob2o$3b3ob2ob2o6b
o2bo$2b3o4bobo6bo4bo$3b2o5b3o5bo3b2o$2bo9bo$22bo$20bo10$14b2o$13bob2o
$13bo2bo$13bo4bo$13bo3b2o$17bo!
I wonder how Get_Smacked discovered this object...
sorry for the late reply but i was looking for some common xs56 in the C2 symmetries and consistently found stabilizations of this induction coil so i checked the soups and noticed they all shared a common predecessor
heres a synthesis i discovered while looking for the same induction coil in D2_+1
get_snackeTWO wrote: March 31st, 2023, 12:22 pm decently old, but a 13G synthesis for xs56_ml1u0e93z034baczgs2t53z6a87079c (final step by galoomba):

Code: Select all

#C [[ GRID MAXGRIDSIZE 14 THEME Catagolue ]]
#CSYNTH xs56_ml1u0e93z034baczgs2t53z6a87079c costs 13 gliders (true).
#CLL state-numbering golly
x = 196, y = 59, rule = B3/S23
185bo$185bobo$185b2o11$44bo141bo$44bo46b3o92bo$44bo141bo$89bo5bo$
40b3o3b3o7bo32bo5bo86b3o3b3o$56bobo30bo5bo71bo3bobo$4bo39bo11b2o
42bo64bobo3b2o13bo7bo$3bo40bo46b3o5bobo64b2o4bo13bo6bobo$3b3o38bo
8b2o44bobo84bo6bobo$53bobo44bo93bo$o6bobo43bo$b2o4b2o$2o6bo92bo$
101bobo90bo$44bo56b2o83bo6bobo$44bo46b3o72b2o4bo13bo6bobo$44bo59b
2o59bobo3b2o13bo7bo$89bo5bo8bobo60bo3bobo$40b3o3b3o40bo5bo8bo77b3o
3b3o$89bo5bo$44bo141bo$44bo46b3o92bo$44bo141bo21$137b3o$139bo$138b
o!
edit two and a half years later: what i meant is that i found the base reaction for the final step and constructed the seed but galoomba put the final step together
other searches related to the induction coil:
GUYTU6J wrote: May 16th, 2023, 12:14 pm
get_snackeTWO wrote: May 16th, 2023, 8:30 am ... could someone find me a synthesis of either of these three predecessors of the induction coil (in which all gliders are coming from the bottom side of the coil)?
I cannot see immediately how to work with these predecessors, and so I need to try some more soups out. For instance, this soup suggests a 2-stage 7-glider recipe (which does not meet your requirement though):

Code: Select all

x = 59, y = 27, rule = B3/S23
54bo$52b2o$53b2o$5bo41bo8b2o$5bobo38bobo7bobo$2bo2b2o40b2o7bo$obo$b2o$
46b2o$45bo2bo$8b3o35b2o5b2o$8bo43b2o$9bo44bo$49b2o$48bobo$50bo5$42b2o$
41bobo$43bo2$52b2o$52bobo$52bo!
The upper left corner reacts with a pre-block supplier too.

Code: Select all

x = 89, y = 35, rule = B3/S23
67bo$65bobo$66b2o20bo$21bo59bo4b2o$19b2o6bo51b2o6b2o$20b2o3b2o53b2o$
26b2o2$13bo59bo$11b2o58b2o$12b2o58b2o$6bo8b2o49bo8b2o$5bobo7bobo47bobo
7bobo$6b2o7bo50b2o7bo3$5b2o58b2o$4bo2bo56bo2bo$5b2o5b2o51b2o5b2o10b2o$
11b2o10b2o46b2o11bobo$13bo8b2o49bo10bo$8b2o14bo43b2o$7bobo57bobo$9bo
59bo5$b2o58b2o$obo57bobo$2bo59bo2$11b2o58b2o$11bobo57bobo$11bo59bo!
and now that raises a question: can we find syntheses as simple as that for the other symmetrical mirrorings of the induction coil that exist (and maybe even the shifted version)?

Code: Select all

x = 65, y = 53, rule = B3/S23
b2o3b2o10b2o3b2o13b2o3b2o$bobobo2bo9bobobo2bo12bobobo2bo9b2o3b2o$3bob
ob2o11bobob2o14bobob2o9bobobo2bo$2b2obo13b2obo16b2obo14bobob2o$5bob2o
13bob2o16bob2o10b2obo$5bobo14bobo17bobo14bob2o$4b2obo13b2obo16b2obo14b
obo$3bo2bo13bo2bo16bo2bo14b2obo$3b3o14b3o17b3o14bo2bo$57b3o$3b3o16b3o
13b3o19b3o$2bo2bo15bo2bo12bo2bo18bo2bo$bob2o15bob2o12bob2o18bob2o$bob
o16bobo13bobo19bobo$2obo15b2obo12b2obo18b2obo$3bob2o15bob2o12bob2o18b
ob2o$2obobo13b2obobo10b2obobo16b2obobo$o2bobobo11bo2bobobo8bo2bobobo14b
o2bobobo$b2o3b2o12b2o3b2o9b2o3b2o15b2o3b2o16$2o3b2o$obobo2bo$2bobob2o
$b2obo$4bob2o$4bobo$3b2obo$2bo2bo$2b3o2$4b3o$4bo2bo$5b2obo$6bobo$6bob
2o$3b2obo$4bobob2o$2bobobo2bo$2b2o3b2o!
WHAT A MOMENT
Chris857
Posts: 745
Joined: June 10th, 2020, 11:26 pm

Re: Still Life Synthesis Thread

Post by Chris857 »

mattiward wrote: October 4th, 2025, 6:36 pm

Code: Select all

x = 39, y = 13, rule = LifeHistory
16.3D$15.D3.D$19.D$17.2D$17.D19.A$36.A.A$3.2E12.D4.D10.2E2.A$3.E19.D
9.E$2E.E2.E5.13D5.2E.E2.E$.E2.3E16.D7.E2.3E$.E20.D8.E$2.3E27.3E$4.E
29.E!
Can this be done without altering the Butterfly on Cover (yellow)?
It doesn't meet the request on a couple fronts, but I ran across the below in the synthesis of 33P4H1V1 where the tub ends up in a similar location, though the butterfly-like portion is half-tub-like and it inserts the tub by modifiying the main still life. But it reminded me of this question.

Code: Select all

x = 83, y = 28, rule = B3/S23
o$b2o$2o6$68bobo$68b2o$69bo10bobo$56bo16bo6b2o$9bo44bobo16bobo5bo$10b
o3bo40b2o16b2o$8b3o2b2o$13bobo$52b3o$54bo$19b3o31bo8b2obo$4bo14bo41bo
2b2o12bo$3bobo14bo39bobo14b2o$2o2bo52b2o2bo15bobo$ob2o3bo49bob2o3bo$4b
4o53b4o$4bo56bo$5bo56bo$2b3o54b3o$2bo56bo!
Timelord Missionary
Posts: 254
Joined: May 8th, 2022, 8:20 pm

Re: Still Life Synthesis Thread

Post by Timelord Missionary »

Chris857 wrote: April 29th, 2026, 11:21 am
mattiward wrote: October 4th, 2025, 6:36 pm Can this be done without altering the Butterfly on Cover (yellow)?
It doesn't meet the request on a couple fronts, but I ran across the below in the synthesis of 33P4H1V1 where the tub ends up in a similar location, though the butterfly-like portion is half-tub-like and it inserts the tub by modifiying the main still life. But it reminded me of this question.

Code: Select all

x = 83, y = 28, rule = B3/S23
o$b2o$2o6$68bobo$68b2o$69bo10bobo$56bo16bo6b2o$9bo44bobo16bobo5bo$10b
o3bo40b2o16b2o$8b3o2b2o$13bobo$52b3o$54bo$19b3o31bo8b2obo$4bo14bo41bo
2b2o12bo$3bobo14bo39bobo14b2o$2o2bo52b2o2bo15bobo$ob2o3bo49bob2o3bo$4b
4o53b4o$4bo56bo$5bo56bo$2b3o54b3o$2bo56bo!
Just doing some research, an intermediate stage would look like this:

Code: Select all

x = 13, y = 14, rule = B3/S23
2$7bo$7b3obo$10b2o$7b2o$7bo$4b2obo2bo$5bo2b3o$5bo$6b3o$8bo!
and the process we would take to get there would be this:

Code: Select all

x = 79, y = 19, rule = B3/S23
71bobo$72b2o3bo$72bo5bo$76b3o2$39bo$37b2o32bo$38b2o30bobo3b2o$6bo4bo58b
2o3b2o$4bobo3bo66bo$5b2o3b3o23b2o32b2o$36bo33bo$33b2obo2bo27b2obo2bo$
34bo2b3o28bo2b3o$12b2o20bo33bo$3o8b2o22b3o31b3o$2bo2bobo5bo23bo33bo$b
o3b2o$6bo!
The conversion from hook to tub has already been demonstrated, but at the current time, I can't think of anything that would remove the tail. That sounds like a job for another person.

[EDIT]: Here's a wildly impractical proof-of-concept:

Code: Select all

x = 33, y = 22, rule = B3/S23
5bobo$6b2o$6bo2$obo$b2o$bo2$16b2o9bobo$11b2obo2bo9b2o$12bob2o12bo$11b
o$10bo$11b3obo$14b2o$11b2o$11bo11b2o$8b2obo2bo8bobo5bo$9bo2b3o8bo6b2o
$9bo20bobo$10b3o$12bo!
Helloshe, I like pentadecathlons and small-period motifs.
I may not be very skilled in search programs, but I have many ideas.
Soli Deo Gloria!
User avatar
KtT
Posts: 600
Joined: December 17th, 2022, 9:29 am

Re: Still Life Synthesis Thread

Post by KtT »

Timelord Missionary wrote: April 29th, 2026, 1:43 pm [EDIT]: Here's a wildly impractical proof-of-concept:

Code: Select all

x = 33, y = 22, rule = B3/S23
5bobo$6b2o$6bo2$obo$b2o$bo2$16b2o9bobo$11b2obo2bo9b2o$12bob2o12bo$11b
o$10bo$11b3obo$14b2o$11b2o$11bo11b2o$8b2obo2bo8bobo5bo$9bo2b3o8bo6b2o
$9bo20bobo$10b3o$12bo!
Completed (xs20_gs2ib8ozx3204a4 in 35G):

Code: Select all

x = 593, y = 54, rule = B3/S23
488bo$487bo$260bo226b3o43bobo$260bobo6bo108bo71bo45bo37b2o$194bo65b2o
5b2o107bobo38bo33bo43bo38bo$75bo39bo35bo40b2o74b2o70bo36b2o37bo32b3o43b
3o$73bobo37b2o34bobo41b2o109bo35bobo73b3o69bobo37bobo$74b2o38b2o34b2o
150bobo35b2o146b2o39b2o$303b2o39bo144bo39bo$343bo$6bo336b3o241bobo$4b
obo580b2o$5b2o581bo14$322b2o69bo74b2o90b2o$248b2o72bobo64b2obobo69b2o
bobo85b2obo2bo$249bo74bo65bob2o71bob2o87bob2o$90bo81b2o74bo74bo65bo74b
o90bo$89bobo80bo74bo74bo65bo74bo90bo$90b2o81b3obo70b3obo70b3obo61b3ob
o70b3obo86b3obo$176b2o73b2o73b2o64b2o73b2o89b2o$20b2o68b2o81b2o73b2o73b
2o64b2o73b2o89b2o$20bo69bo82bo74bo74bo65bo74bo90bo$17b2obo2bo63b2obo2b
o76b2obo2bo68b2obo2bo68b2obo2bo59b2obo2bo68b2obo2bo84b2obo2bo$18bo2b3o
64bo2b3o77bo2b3o69bo2b3o69bo2b3o60bo2b3o69bo2b3o85bo2b3o$18bo69bo82bo
74bo74bo65bo74bo90bo$19b3o67b3o80b3o72b3o72b3o63b3o72b3o88b3o$21bo69b
o82bo74bo74bo65bo74bo26b3o61bo$228bo41bo221bo$40b2o153bo32b2o39b2o222b
o$40bobo73b2o34b2o40b2o31bobo39bobo$40bo75bobo34b2o39bobo$116bo35bo338b
2o$2o489bobo$b2o488bo$o3$583b2o$583bobo5bo$583bo6b2o$590bobo!
Timelord Missionary
Posts: 254
Joined: May 8th, 2022, 8:20 pm

Re: Still Life Synthesis Thread

Post by Timelord Missionary »

Immediate reduction to 29 gliders:

Code: Select all

x = 63, y = 37, rule = B3/S23
6$10bo$8bobo36bo$9b2o37bo$46b3o2$6bo12bo29bo$4bobo12b3o27bo5bo$5b2o7b
o7bo18bo7bo5b3o$11bobobob3o2bo16bobo16bo$11b2o2bobo2bob2o16b2o11b3o2b
o$15bo4bo22bo9bo2bob2o$11b2o3bo2b2o21bobo11bo$10bobo2b2o26b2o7bo2b2o$
11bo39bobo$52bo3$16b2o$15b2o$17bo2$13b2o$12bobo$14bo$17b2o$17bobo$17b
o!
EDIT: Down to 28 gliders:

Code: Select all

x = 20, y = 27, rule = B3/S23
6bo$4bobo$5b2o3$2bo12bo$obo12b3o$b2o7bo7bo$7bobobob3o2bo$7b2o2bobo2bo
b2o$11bo4bo$7b2o3bo2b2o$6bobo2b2o$7bo3$2b2o$3b2o7b2o$2bo8b2o$13bo2$9b
2o$8bobo$10bo$13b2o$13bobo$13bo!
I found it by using a technique called "throwing stuff at a wall and seeing what sticks".
Helloshe, I like pentadecathlons and small-period motifs.
I may not be very skilled in search programs, but I have many ideas.
Soli Deo Gloria!
User avatar
EvinZL
Posts: 1068
Joined: November 8th, 2018, 4:15 pm
Location: here

Re: Still Life Synthesis Thread

Post by EvinZL »

25 gliders:

Code: Select all

x = 22, y = 25, rule = B3/S23
19bo$14bo4bobo$13bo5b2o$2bo2bo7b3o$obo2bobo$b2o2b2o7$5b2o$6bo$5bo$4bo$
5b3obo$8b2o$5b2o$5bo$2b2obo2bo$3bo2b3o$3bo$4b3o$6bo!
User avatar
I6_I6
Posts: 999
Joined: July 26th, 2025, 8:44 pm
Location: Here, there, somewhere, anywhere, everywhere.
Contact:

Re: Still Life Synthesis Thread

Post by I6_I6 »

45-degree MWSS-to-G in 30G:

Code: Select all

x = 570, y = 38, rule = B3/S23
383bo184bo$384bo182bo$382b3o182b3o$6bobo$7b2o$7bo7bo374bo170bo$14bo
373b2o172b2o$14b3o366bobo3b2o170b2o3bobo$384b2o180b2o$3bo380bo182bo$4b
o6bo377bo172bo$2b3o7b2o38bo36bo50bo47bo48bo151bobo38b2o62b2o52b2o10bob
o$11b2o38bobo34bobo48bobo45bobo46bobo50bo54bo37bo6b2o36bo3bo59bo3bo49b
o3bo11b2o$51bobo34bobo48bobo45bobo46bobo49bobo52bobo35bobo42bobo2bobo
56bobo2bobo46bobo2bobo$49b3ob2o31b3ob2o45b3ob2o42b3ob2o43b3ob2o48bobo
52bobo35bobo42bobo3b2o56bobo3b2o6bo39bobo3b2o$11bo36bo36bo50bo47bo48bo
52b3ob2o49b3ob2o32b3ob2o39b3ob2o58b3ob2o10bobo35b3ob2o9bo$b2o7b2o37b3o
b2o31b3ob2o45b3ob2o42b3ob2o43b3ob2o45bo54bo37bo44bo63bo16b2o35bo14bobo
$obo7bobo38bob2o33bob2o47bob2o44bob2o45bob2o46b3ob2o49b3ob2o32b3ob2o
39b3ob2o58b3ob2o48b3ob2o8bobo$2bo285bob2o51bob2o34bob2o41bob2o60bob2o
13b2o35bob2o9bo$507bobo$198bo48bo56bo202bo$100bo48b3o46bo48bo41b2o11bo
bo39b2o36b2o43b2o15bo46b2o52b2o$48bo50bo98bo48bo40bobo12b2o38bobo35bob
o42bobo14bo4bobo39bobo51bobo$49bo37b2o10b3o36b2o7bo5bo32b2o47b2o48bo2b
o51bo2bo34bo2bo41bo2bo16b3o2b2o37bo2bo50bo2bo$47b3o3bo33bobo48bobo6bo
5bo32bobo5b3o3b3o32bobo5b3o3b3o32bobob2o16b2o31bobob2o32bobob2o39bobob
2o21bo36bobob2o13b2o33bobob2o13b2o$52b2o34bo14b3o33bo7bo5bo33bo48bo47b
2o2bo16bo2bo30b2o2bo33b2o2bo40b2o2bo59b2o2bo14bo34b2o2bo14bo$52bobo48b
o94bo48bo40bobo7b2o6b2o35bobo35bobo42bobo61bobo13b3o35bobo13b3o$104bo
44b3o41bo4bo42bo5bo41b2o7b2o44b2o36b2o43b2o18b2o42b2o15bo36b2o15bo$
193bo4bo42bo5bo198b2o5b2o$193bo47bo60b3o143bo4bobo$285b2o53b2o111bo$
143b2o44b3o3b3o39b3o45b2o13bo5bo33b2o$142bobo55b2o98bo5bo$144bo48bo6bo
bo38bo10b2o46bo5bo36b3o$193bo6bo40bo9b2o90bo$146b2o45bo47bo11bo48b3o
39bo$146bobo$146bo!
It can be built by slmake (that's where I got the component), which implies a synthesis, but there wasn't a proper synthesis on catagolue, so I made one. It's not a very efficient synthesis though; I'm sure it can be reduced by a glider or two.

Code: Select all

#C [[ THEME Golly ]]
x = 27, y = 15, rule = LifeHistory
8.A$A6.A.A$3A4.BA2B.B2D$3.A4.2B.2B2DB$2.2A2.3B.6B2.3B$2.20B$4.19B$4.2B
C10BD4B$4.2B2C10BD4B$4.B2C11B2D3B$4.13B2D4B$5.12BD3B.B2A$6.13B3.BA.A$
6.3B.B3.B10.A$25.2A!
RuleEdit: A .rule file editing tool
User avatar
hibiscus
Posts: 427
Joined: August 26th, 2023, 3:30 am

Re: Still Life Synthesis Thread

Post by hibiscus »

xs40_rb8br0rb8brz0124303421 (no synthesis on cata) in 16G:

Code: Select all

x = 113, y = 49, rule = B3/S23
98bo$99bo$97b3o5$101bo8bo$60bo41bo7bobo$60bobo37b3o7b2o$60b2o$55bo$53b
obo$54b2o$94b2o12bo$94b2o12bobo$108b2o4$61b2o36b2o$61bobo35bobo$11b3o
48b2o36b2o$13bo$12bo$15b2o4bo$15bobo2b2o40b2o36b2o$15bo4bobo38bobo35bo
bo$61b2o36b2o4$108b2o$94b2o12bobo$94b2o12bo$54b2o$3o50bobo$2bo52bo$bo
58b2o$60bobo37b3o7b2o$60bo41bo7bobo$101bo8bo5$97b3o$99bo$98bo!
Edit (2026/05/02 22:01): -2G (now 14G)

Code: Select all

x = 78, y = 73, rule = B3/S23
10$31bo$32bo$30b3o2$17bo$18b2o$17b2o$34bo8bo$35bo7bobo$33b3o7b2o5$41b
o$41bobo$41b2o4$32b2o$32bobo$33b2o4$33b2o$32bobo$32b2o4$41b2o$41bobo$
41bo5$33b3o7b2o$35bo7bobo$34bo8bo$17b2o$18b2o$17bo2$30b3o$32bo$31bo!
Last edited by hibiscus on May 2nd, 2026, 4:01 pm, edited 1 time in total.

Code: Select all

#C [[ ZOOM 8 TRACK -3/87 -1/87 ]]
x = 4, y = 5, rule = B35ay/S2-i3-e4ey5j
2bo$b2o$2obo$bobo$2b2o!
29.09.26
splitterrules
Posts: 106
Joined: April 11th, 2025, 6:11 pm

Re: Still Life Synthesis Thread

Post by splitterrules »

Here are some simple predecessors for a 30-bit still life.

Code: Select all

x = 84, y = 28, rule = B3/S23
64bo$62bobo$63b2o5$bo$2bo$3o73bo2bo$75bo2b2o$75b2o$8b2o65b3o$6bob2o60b
2o$6b2o62b2o10b2o$10bo71b2o$6bo3bo9bo59b2o$6bo2b2o10bo58b2o$19b3o2$25b
2o$27bo$27b2o$24b4o2$29b2o$29bo$29bo!
User avatar
I6_I6
Posts: 999
Joined: July 26th, 2025, 8:44 pm
Location: Here, there, somewhere, anywhere, everywhere.
Contact:

Re: Still Life Synthesis Thread

Post by I6_I6 »

splitterrules wrote: May 2nd, 2026, 3:39 pm Here are some simple predecessors for a 30-bit still life.

Code: Select all

x = 84, y = 28, rule = B3/S23
64bo$62bobo$63b2o5$bo$2bo$3o73bo2bo$75bo2b2o$75b2o$8b2o65b3o$6bob2o60b
2o$6b2o62b2o10b2o$10bo71b2o$6bo3bo9bo59b2o$6bo2b2o10bo58b2o$19b3o2$25b
2o$27bo$27b2o$24b4o2$29b2o$29bo$29bo!
Astonishingly, a part of one of those predecessors happens to have a 3G synthesis:

Code: Select all

#C [[ STOP 8 ]]
x = 11, y = 8, rule = B3/S23
obo$b2o6bo$bo6bo$8b3o2$4b2o$3bobo$5bo!
Now we need to figure out a way to squeeze in that Z-tetromino.

Code: Select all

#C [[ THEME Golly ]]
x = 27, y = 15, rule = LifeHistory
8.A$A6.A.A$3A4.BA2B.B2D$3.A4.2B.2B2DB$2.2A2.3B.6B2.3B$2.20B$4.19B$4.2B
C10BD4B$4.2B2C10BD4B$4.B2C11B2D3B$4.13B2D4B$5.12BD3B.B2A$6.13B3.BA.A$
6.3B.B3.B10.A$25.2A!
RuleEdit: A .rule file editing tool
Chris857
Posts: 745
Joined: June 10th, 2020, 11:26 pm

Re: Still Life Synthesis Thread

Post by Chris857 »

I6_I6 wrote: May 2nd, 2026, 2:35 pm 45-degree MWSS-to-G in 30G:


It can be built by slmake (that's where I got the component), which implies a synthesis, but there wasn't a proper synthesis on catagolue, so I made one. It's not a very efficient synthesis though; I'm sure it can be reduced by a glider or two.
29G

Code: Select all

x = 54, y = 59, rule = B3/S23
47bo$47bobo$47b2o13$17b2o$14bo3bo$13bobo2bobo$13bobo3b2o$11b3ob2o$10b
o$11b3ob2o$13bob2o3$14b2o$13bobo$10bo2bo$9bobob2o$9b2o2bo$13bobo$14b2o
19$52bo$51b2o$51bobo4$b2o$obo$2bo!
User avatar
KtT
Posts: 600
Joined: December 17th, 2022, 9:29 am

Re: Still Life Synthesis Thread

Post by KtT »

xs30_69b8r3on96z039c in 13G from soup, down from 27G:

Code: Select all

x = 228, y = 151, rule = B3/S23
225bo$225bobo$225b2o66$2bo$obo$b2o4$27b2o42b2o79b2o$27b2o42b2o79b2o$33b
2o42b2o79b2o$32bo2bo40bo2bo77bo2bo$33bobo41bobo78bobo$34bo43bo80bo7$169b
o$67bo80bo20bo$66bobo78bobo19bo$66bobo78bobo$67bo80bo4$185b2o$185bobo
$147b2o36bo$148b2o$147bo2$143b2o$144b2o$143bo4$4b2o$3bobo$5bo$110b2o$
110bobo$110bo$68b3o$70bo$69bo4$207b2o$207bobo$207bo28$202b2o$202bobo$
202bo!
User avatar
I6_I6
Posts: 999
Joined: July 26th, 2025, 8:44 pm
Location: Here, there, somewhere, anywhere, everywhere.
Contact:

Re: Still Life Synthesis Thread

Post by I6_I6 »

KtT wrote: May 3rd, 2026, 6:03 am xs30_69b8r3on96z039c in 13G from soup, down from 27G:

Code: Select all

x = 228, y = 151, rule = B3/S23
225bo$225bobo$225b2o66$2bo$obo$b2o4$27b2o42b2o79b2o$27b2o42b2o79b2o$33b
2o42b2o79b2o$32bo2bo40bo2bo77bo2bo$33bobo41bobo78bobo$34bo43bo80bo7$169b
o$67bo80bo20bo$66bobo78bobo19bo$66bobo78bobo$67bo80bo4$185b2o$185bobo
$147b2o36bo$148b2o$147bo2$143b2o$144b2o$143bo4$4b2o$3bobo$5bo$110b2o$
110bobo$110bo$68b3o$70bo$69bo4$207b2o$207bobo$207bo28$202b2o$202bobo$
202bo!
-1G to 12G:

Code: Select all

x = 167, y = 89, rule = B3/S23
165bo$164bo$164b3o56$6b2o42b2o56b2o$6b2o42b2o56b2o$12b2o42b2o56b2o$11b
o2bo40bo2bo54bo2bo$12bobo41bobo55bobo7b3o$13bo43bo57bo4bo3bo$120b2o3b
o$119bobo2$116bo$116b2o$o114bobo$b2o122bo$2o44bo57bo20bo$45bobo55bobo
19bo$46b2o56b2o$2b2o$2bobo65b3o$2bo67bo$66b2o3bo$65bobo$67bo7$146b3o$
146bo$147bo!

Code: Select all

#C [[ THEME Golly ]]
x = 27, y = 15, rule = LifeHistory
8.A$A6.A.A$3A4.BA2B.B2D$3.A4.2B.2B2DB$2.2A2.3B.6B2.3B$2.20B$4.19B$4.2B
C10BD4B$4.2B2C10BD4B$4.B2C11B2D3B$4.13B2D4B$5.12BD3B.B2A$6.13B3.BA.A$
6.3B.B3.B10.A$25.2A!
RuleEdit: A .rule file editing tool
Chris857
Posts: 745
Joined: June 10th, 2020, 11:26 pm

Re: Still Life Synthesis Thread

Post by Chris857 »

hibiscus wrote: May 2nd, 2026, 3:18 pm xs40_rb8br0rb8brz0124303421 (no synthesis on cata) in 16G:
Edit (2026/05/02 22:01): -2G (now 14G)
12G - there was a 4G way to do the two wings on catagolue

Code: Select all

x = 64, y = 83, rule = B3/S23
48bobo$48b2o$49bo$62bo$61bo$61b3o$o$b2o42bobo$2o43b2o$46bo15$47bobo$47b
2o$7bobo38bo$8b2o$8bo$17bo$18bo$16b3o28bo$45b2o$46b2o40$46bo$2o43b2o$
b2o42bobo$o$61b3o$61bo$62bo$49bo$48b2o$48bobo!
User avatar
synperiplanar
Posts: 258
Joined: February 22nd, 2023, 4:01 pm
Location: Haha sometimes

Re: Still Life Synthesis Thread

Post by synperiplanar »

century + glider + ??? = xs20_0g0si5dicz343 (currently 16G)

Code: Select all

x = 9, y = 15, rule = B3/S23
4bo$5bo$3b3o3$6b2o$5b2o$2bo3bobo$2b2o3b2o$bo$bo$obo$4bo$3bo$2bo!
these gosh darn ???s keep ruining my potentially goated syntheses... if we could find a better and more recognizable object, it might be more plausible

...LLS search maybe?
WHAT A MOMENT
User avatar
KtT
Posts: 600
Joined: December 17th, 2022, 9:29 am

Re: Still Life Synthesis Thread

Post by KtT »

xs32_cimg6t1e8gzx124303496 in 10G from soup:

Code: Select all

x = 143, y = 39, rule = B3/S23
36b2o76b2o$35bo2bo74bo2bo$36b2o76b2o$32b2o71bo4b2o$32bobo69bobo3bobo$
33b2o69bobo4b2o$105bo3$107b2o$107b2o19$53bo$52b2o$52bobo$126b2o$bo124b
obo$b2o123bo14b2o$obo50b3o84b2o$53bo33b2o53bo$54bo31bobo$88bo!
User avatar
I6_I6
Posts: 999
Joined: July 26th, 2025, 8:44 pm
Location: Here, there, somewhere, anywhere, everywhere.
Contact:

Re: Still Life Synthesis Thread

Post by I6_I6 »

xs31_oka9jz6aq5iq23z023 in 167G:

Code: Select all

x = 12, y = 14, rule = B3/S23
5b2o$5bo$2b2obo$2bo2bobo2b2o$4bobobo2bo$4obo2bobo$o2bobobobo$5bobo$5b
obo$6bo2$9b2o$8b2o$10bo!

Code: Select all

#C [[ THEME Golly ]]
x = 27, y = 15, rule = LifeHistory
8.A$A6.A.A$3A4.BA2B.B2D$3.A4.2B.2B2DB$2.2A2.3B.6B2.3B$2.20B$4.19B$4.2B
C10BD4B$4.2B2C10BD4B$4.B2C11B2D3B$4.13B2D4B$5.12BD3B.B2A$6.13B3.BA.A$
6.3B.B3.B10.A$25.2A!
RuleEdit: A .rule file editing tool
User avatar
KtT
Posts: 600
Joined: December 17th, 2022, 9:29 am

Re: Still Life Synthesis Thread

Post by KtT »

xs19_64k6pajozw11 in 10G from soup, down from 19G:

Code: Select all

x = 129, y = 55, rule = B3/S23
39bobo$39b2o31bobo$40bo32b2o$73bo$obo$b2o103bobo$bo80bobo22b2o$83b2o22b
o$83bo2$6bo$7bo$5b3o11$8bo103bobo$8bo99bo2bob2o$8bo94b2o3b4o$102bo2bo
6b2obo11b2o$103bobo4bobob2o11b2o$104bo5b2o4$12b3o92b2o$106bo2bo$106bo
2bo$107b2o17$4bo$4b2o$3bobo!
2026-06-14:
xs29_mllm0ek13z1wd871 in 11G from soup, down from 129G:

Code: Select all

x = 240, y = 58, rule = B3/S23
145bo$146bo$144b3o$149bo$150bo$148b3o$bo$2bo$3o13$212b2o$213bo$208b2o
bo$206b3ob3o$91bo70bo42bo$29b3o58bobo8b3o57bobo8b3o30b2ob2ob2o3b2o$91b
2o69b2o45bobobo2b2o$209bobobo$208b2ob2o$28b2o70b2o69b2o$27bo2bo68bo2b
o67bo2bo$28b2o70b2o69b2o$161b2o$161b2o3$143b2o$142bobo$144bo6$36b2o$35b
2o$37bo$237b2o$237bobo$237bo2$109b2o$109bobo$109bo$69b2o$68bobo$70bo!
Old synthesis for safekeeping:

Code: Select all

#C [[ GRID MAXGRIDSIZE 14 THEME Catagolue ]]
#CSYNTH xs29_mllm0ek13z1wd871 costs 129 gliders (true).
#CLL state-numbering golly
x = 1465, y = 92, rule = B3/S23
210bo$208b2o$209b2o9$258bo$259bo$207bo49b3o$207bobo$162bobo42b2o$
163b2o$163bo8$156bo34bobo150bo$157b2o32b2o150bo$156b2o34bo150b3o$
1370bobo$1371b2o$1163bobo5bobo197bo$1164b2o6b2o52bo$1164bo7bo51bob
o150bobo$48bo217bobo946bo9b2o3bobo144b2o$46bobo218b2o514bo429bobo
4bobo7b2o146bo$10bo36b2o218bo516bo95bo289b2o42b2o5b2o8bo$9bo591bo
180b3o93b2o158bo86bo4bo40b2o48bo$9b3o588bo186bo91b2o156bo88bo2bo
40bo$2bo48bobo332bo207bo5b3o92bo92bo248b3o84b3o2b3o288bo$obo49b2o
333bo207b2o97bo91b3o630bo$b2o49bo26bo305b3o206b2o98b3o336b3o383b3o
$13bo51b2o10b2o42b2o66b2o108b2o99b2o42b2o36b2o54b2o49b2o12b3o33b2o
47b2o47b2o43b2o6b3o40b2o46b2o55b2o57b2o36bo4b2o45b2o38b2o140b2o45b
2o43b2o49b2o42b2o$9bo3bobo39bo10bo11b2o42bo67bo20b2o85bobo98bobo
41bobo35bobo53bobo14bo33bobo12bo34bobo2bo43bobo2bo43bobo42bobo6bo
41bobo38bo6bobo54bobo47bobo6bobo35bo4bobo42b2o2bo39bo49bo42b2o4bo
41bo4bo41bo4bo39bo4bo45bo4bo38bo$7b2o4b2o41bo9bob2o45bo6bob2o64bob
2o17bobo83bo2bob2o94bo2bob2o37bo2bob2o31bo2bob2o49bo2bob2o10bo33bo
2bob2o10bo32bo2bobobo41bo2bobobo41bo2bob2o38bo2bob2o4bo39bo2bobobo
32bobo5bo2bobobo49bo2bobobo12bo31b2o5bo2bobobo35bo2bobobo38bo3bobo
bo30bo2bobobobo39bo2bobobobo39bo2bobobobo40bobobobo40bobobobo38bob
obobo44bobobo39bob2o$8b2o44b3o7b2obobo43bobo4b2obobo51bo10b2obobo
17bo71bo12bob2obobo93bob2obobo36bob2obobo30bob2obobo48bob2obobo10b
3o30bob2obobo4bobo35bob2obobo3bo5bo31bob2obob2o40bob2obobo37bob2ob
obo37bo5bob2obob2o33b2o5b3obob2o3bo33bo11b3obob2o6bo3b2o32bo6b3obo
b2o35b3obob2o32bo6b3obob2o30b5obob2o39b5obob2o41b3obob2o39b3obob2o
39b3obob2o37b3obob2o43b3obobo37b3ob3o$63bo3bo46b2o3bo3bo53bobo7bo
3bo92bo12bo3bo96bo3bo39bo3bo32bo4bo50bo4bo45bo4bo6b2o36bo4bo4bo5bo
32bo4bo43bo4bo39bo4bo40bo4bo4bo47bo5bo32bobo15bo7b2o5b2o42bo42bo
33bobo10bo39bo48bo34b2o12bo46bo46bo44bo10b2o38bobo44bo$63b2ob2o50b
obobobo52b2o9bobobo89b3o6bo6bobobo96bobobo39bobobo32b2obobo50b2obo
bo45b2obobo6bo37b2obobo3b3o3b3o31b2ob2o44b2ob2o40b2ob2o38b3o5b2ob
2o43b2ob2o5b3o31b2o11b2ob2o8b2o44b2ob2o38b2ob2o34b2o6b2ob2o35b2ob
2o44b2ob2o33bobo8b2ob2o42b2ob2o42b2ob2o40b2ob2o9b2o35b2ob2ob2o36b
2ob2ob2o$7b2o105b2o3b2ob2o63b2ob2o100bo4b2ob2o95bobob2o38bobob2o
34bob2o52bobobo46bobobo45bobobo44bobo46bobo42bobo48bobo34b3o8bobo
52bobobo49b2o3bobobo40bobo44bobo37bobo46bobo36bo9bobo38bo5bobo42bo
bobo40bobobo12bo33bobobo39bobobo$7bobo103bobo174b3o91bobo3bo6b2o
41bobo38bo5bo36bo12bo2bo47bo2bo46bo2bo45bo2bo45bo2bo41bobo48bobo
36bo8bobo53bo2bo50b2o3bo2bo39bo2bo38b2o3bo2bo36bo2bo45bo2bo45bo2bo
36bobo4bo2bo43bo2bo3bobo35bo2bo47bo2bo40bo2bo$7bo107bo61b2o206b2o
4b2o44bo3bo38b2o5b2o36b2o3b2o4b2o51b2o6b2o40b2o9b2o36b2o38bo8b2o
43bo43b2o5bo36bo10bo57b2o48bo6b2o41b2o40b2o3b2o38b2o47b2o47b2o38b
2o5b2o45b2o4b2o39b2o49b2o42b2o$13b2o161b2o207bo4b2o43bobo48bobo2b
3o30b2o4bobo63b2o52bobo76bo95bobo252bo244bo$12b2o164bo114b3o140b2o
53bo38bo67bo51bo76b3o97bo336b3o97b2o$14bo57b3o220bo4b2o190bo441bo
231bo97bobo62b2o121b2o$72bo221bo4b2o138b2o87bo114bo290b2o3b2o224bo
98bo63b2o43b2o78b2o$68b2o3bo202b2o3b2o18bo88b3o46bobo2b2o82b2o9bo
102b2o86b2o201bobo3bobo376b2o10bo42bobo76bo$67bobo10b3o192bobo4b2o
108bo46bo3b2o82bobo9b2o7b2o92bobo84bobo207bo369b2o7bobo52bo6b2o74b
2o$69bo10bo196bo3bo109bo53bo92bobo7bobo180bo140b2o434bobo7bo60b2o
75bobo$55b2o24bo466bo186b3o133bobo77b2o357bo60bo9bo74bo$54bobo342b
2o336bo135bo71b2o3b2o419b2o$56bo341b2o249bo86bo9b3o132bo63bobo4bo
362b3o9b2o41bobo$400bo127b3o117b2o96bo134b2o62bo371bo9bobo$530bo
117bobo80b3o13bo132bobo433bo10bo$529bo203bo$732bo3$160b2o$161b2o$
160bo4$159b2o$160b2o$159bo3$319bo31b2o$318b2o19b3o9bobo$313b2o3bob
o18bo11bo$266b3o43b2o26bo$268bo45bo$267bo77b2o$345bobo$257bo87bo$
257b2o$244b3o9bobo$246bo$245bo$256b2o$255bobo$257bo!
Chris857
Posts: 745
Joined: June 10th, 2020, 11:26 pm

Re: Still Life Synthesis Thread

Post by Chris857 »

As part of synthesizing a p29 honey farm hassler, I found/have this edgy BTS synthesis that I don't see elsewhere on the forums (good clearance on the bookend side). No idea how/when I found it (it's just been hanging out in my collection), but it looks like a soup result. (edit: went through the soups on catagolue since there aren't that many, but I don't think I see this reaction. huh.)

Code: Select all

x = 140, y = 146, rule = LifeHistory
33.2A$33.A.A$35.A$31.4A.2A$31.A2.A.A.A$36.A.A$36.A2.2A$35.2A4.A$37.5A
$24.A12.A4.2A$23.A.A4.A9.2A2.A$24.A3.2A.2A8.A.2A$30.A10.A$40.2A3$22.2A
4.A7.2A$16.2A4.2A2.2A.2A5.2A$17.A10.A$16.A$16.2A2.2A$19.A.A11.2A$14.4A
.A13.A$14.A2.A.2A13.3A45.A$26.3A7.A45.A.A$82.2A$79.A$78.A$78.3A2$33.2A
$32.A2.A$32.A2.A62.A$33.2A61.2A$33.2D62.2A8$8.A7.3A$8.3A13.2D.D2.D21.
2A$11.A13.D.4D6.D5.2A6.A2.A$10.2A11.D.D10.D.D4.2A6.A2.A5.2D$23.2D2.2D
7.D.D13.2A5.D2.D$28.D8.D20.2D.2D$16.A10.D32.D17.D$7.2A5.2A.2A2.2A4.2D
49.D$7.2A7.A4.2A55.D2$74.3D3.3D$3.2A$3.A10.A63.D$2A.A8.2A.2A3.A57.D$A
2.2A9.A4.A.A56.D$.2A4.A12.A$3.5A$3.A4.2A$4.2A2.A$6.A.A$6.A.A.A2.A$7.2A
.4A$9.A$9.A.A70.2A$10.2A69.2A$83.A6$99.3A$99.A$100.A29$126.3A$126.A$127.
A37$138.A$137.2A$137.A.A!
User avatar
ElijahKen
Posts: 273
Joined: March 9th, 2024, 7:32 pm

Re: Still Life Synthesis Thread

Post by ElijahKen »

ElijahKen wrote: December 27th, 2025, 8:35 pm Here is a 2g reduction to the table-on-table to hat component, which previously cost 79g, and now costs 53g:
<snip>
Can it be reduced more? The base reaction is very simple:

Code: Select all

x = 15, y = 16, rule = B3/S23
2o11b2o$2o11b2o$o13bo$4b2o3b2o$2bobo2bo2bobo$2o3b5o3b2o2$5b2ob2o$6bobo
$6bobo$4b2o2bob2o$5bobobobo$4bo2bo$4b2o2bo$9bo$8b2o!
This component was used to synthesize xs22_8o6heg8oz3201ac.
Using spark search, I found a much simpler way of doing this reaction, yielding a 26 glider reduction to xs22_8o6heg8oz3201ac:

Code: Select all

x = 37, y = 23, rule = B3/S23
22bo$20b2o$7bo13b2o4bo$8b2o15b2o$7b2o17b2o2$3bo27bo$4b2o23b2o$3b2o25b
2o2$14b2o3b2o$14bo2bo2bo$15b5o$7b2o17b2o$6bobo6b2ob2o6bobo$8bo7bobo7bo
$3o13bobo$2bo11b2o2bob2o13b2o$bo13bobobobo12b2o$14bo2bo18bo$14b2o2bo$
19bo$18b2o!
EDIT:
An additional 1g reduction to the final step, shown with the full table-on-table-to-hat component (aka tables-to-hat component):

Code: Select all

x = 134, y = 22, rule = B3/S23
2bo$obo8b2o48b2o51b2o$b2o8bo49bo52bo$12bo2b2o45bo2b2o48bo2b2o$13bo2bo
46bo2bo49bo2bo$3bo5bobobobo7bo35bobobobo34bo11bobobobo13bo$4bo4b2obo2b
2o5bo36b2obo2b2o34bo10b2obo2b2o11bo$2b3o7bobo7b3o37bobo34b3o13bobo13b
3o$12bobo47bobo42bo7bobo7bo$11b2ob2o45b2ob2o39bobo6b2ob2o6bobo$62bobo
41b2o17b2o$2b2o19b2o37bobo49b5o$3b2o17b2o37b2ob2o47bo2bo2bo$2bo21bo88b
2o3b2o$7b2o9b2o$6bobo9bobo81b2o25b2o$8bo9bo44bo39b2o23b2o$3o21b3o36b2o
37bo27bo$2bo21bo32b2o3bobo$bo23bo32b2o7b3o36b2o17b2o$57bo9bo39b2o15b2o
$68bo37bo19bo!
The previous steps of xs22_8o6heg8oz3201ac:

Code: Select all

x = 354, y = 52, rule = B3/S23
321bo$322b2o$173bo147b2o$174b2o59bo80bo$173b2o58b3o78b3o$232bo80bo$232b
2o74bobo2b2o$171b2o136b2o$170bobo136bo$11b2o53b2o57b2o45bo5b2o56b2o79b
2o$11bo54bo58bo52bo57bo80bo$12bo2b2o50bo2b2o54bo2b2o48bo2b2o53bo2b2o76b
o2b2o$13bo2bo51bo2bo55bo2bo49bo2bo43bo10bo2bo7bo69bo2bo$9bobobobo48bo
bobobo52bobobobo46bobobobo42bobo6bobobobo8bobo57bo5bobobobo7bo$9b2obo
2b2o47b2obo2b2o51b2obo2b2o45b2obo2b2o42b2o6b2obo2b2o7b2o57bobo4b2obo2b
2o5bobo$12bobo52bobo56bobo50bobo55bobo68bobo7bobo7bobo$12bobo52bobo56b
obo50bobo41b2o12bobo12b2o55bo8bobo8bo$5bo5b2ob2o5bo44b2ob2o54b2ob2o48b
2ob2o39bobo11b2ob2o11bobo62b2ob2o$6bo13bo203bo27bo$4b3o4b5o4b3o38b2o3b
5o3b2o44b2o3b5o3b2o38b2o3b5o3b2o43b2o3b5o3b2o66b2o3b5o3b2o$10bo2bo2bo
40b2o2b2o2bo2bo2bo2b2o2b2o36b2o2b2o2bo2bo2bo2b2o2b2o30b2o2b2o2bo2bo2b
o2b2o2b2o35b2o2b2o2bo2bo2bo2b2o2b2o43bo14b2o2b2o2bo2bo2bo2b2o2b2o14bo
$b2o7b2o3b2o7b2o31b2o6b2o3b2o6b2o36b2o6b2o3b2o6b2o30b2o6b2o3b2o6b2o35b
2o6b2o3b2o6b2o43b2o7bo5b2o6b2o3b2o6b2o5bo7b2o$obo21bobo265bobo5bobo33b
obo5bobo$2bo21bo108b2o38b2o11b2o43b2o11b2o55b2o9b2o11b2o9b2o$133bobo36b
obo11bobo41bobo11bobo64bobo11bobo$134bo38bo13bo43bo13bo66bo13bo$71b3o
48b3o$73bo48bo173b3o8bo32b3o$72bo3bo42bo3bo174bo6bobo32bo$76b2o40b2o177b
o8b2o33bo$75bobo40bobo$80b3o30b3o$80bo34bo$81bo32bo$286b2o63b2o$285bo
bo63bobo$287bo10b3o37b3o10bo$300bo9b2o26bo$299bo11b2o6b2o18bo$310bo7b
obo$320bo2$301b2o33b2o$300bobo33bobo$302bo33bo5$295b2o45b2o$296b2o43b
2o$295bo47bo!
The old table-on-table-to-hat component was also used to synthesize xs22_mk213kk8z14b43, so using the new component yields a 59 glider reduction:

Code: Select all

x = 134, y = 20, rule = B3/S23
11b2ob2o45b2ob2o48b2ob2o$12bobo2bo44bobo2bo47bobo2bo$11bo3b2obo42bo3b
2obo45bo3b2obo$3bo6bo6bo5bo36bo6bo32bo12bo6bo11bo$4bo5b2o3b2o5bo37b2o
3b2o34bo11b2o3b2o11bo$2b3o7bobo7b3o37bobo34b3o13bobo13b3o$12bobo47bob
o42bo7bobo7bo$11b2ob2o45b2ob2o39bobo6b2ob2o6bobo$62bobo41b2o17b2o$2b2o
19b2o37bobo49b5o$3b2o17b2o37b2ob2o47bo2bo2bo$2bo21bo88b2o3b2o$7b2o9b2o
$6bobo9bobo81b2o25b2o$8bo9bo44bo39b2o23b2o$3o21b3o36b2o37bo27bo$2bo21b
o32b2o3bobo$bo23bo32b2o7b3o36b2o17b2o$57bo9bo39b2o15b2o$68bo37bo19bo!
mattiward wrote: August 13th, 2025, 1:54 pm Here are some conversions that I would like to have solved:

Code: Select all

x = 44, y = 38, rule = LifeHistory
5.A2.A28.2A$5.4A28.2A2$5.4E17.D8.4E$4.E4.E17.D6.E4.E$4.E.2E.E5.14D5.E
.2E.E$.2E.E.2E.E.2E14.D3.2E.E.2E.E.2E$.2E.E4.E.2E13.D4.2E.E4.E.2E$5.
4E26.4E2$7.2E28.2E$7.2E28.2E20$5.2A.2A26.A$6.A.A16.D9.A.A$6.A.A17.D8.
A.A$2.2E.2A.2A.2E3.12D3.2E.2A.2A.2E$2.E9.E13.D4.E9.E$E.E9.E.E10.D3.E.
E9.E.E$2E11.2E14.2E11.2E!
These conversions should be done without altering the yellow regions.
The bottom one can now be solved in 25 gliders total, using some extra cleanup to prevent collisions:

Code: Select all

x = 148, y = 21, rule = B3/S23
75bo40bo19bo$64bo9bo42b2o15b2o$8bo23bo32b2o7b3o39b2o17b2o$9bo21bo32b2o
3bobo$7b3o21b3o36b2o40bo27bo$15bo9bo44bo34bo7b2o23b2o7bo$13bobo9bobo78b
2o4b2o25b2o4b2o$14b2o9b2o78b2o39b2o$9bo21bo91b2o3b2o$10b2o17b2o37b2ob
2o50bo2bo2bo$9b2o19b2o37bobo52b5o$69bobo44b2o17b2o$18b2ob2o45b2ob2o42b
obo6b2ob2o6bobo$19bobo47bobo45bo7bobo7bo$9b3o7bobo7b3o37bobo38b2o13bo
bo13b2o$11bo3b2ob2ob2ob2o3bo35b2ob2ob2ob2o33bobo9b2ob2ob2ob2o9bobo$10b
o4bo9bo4bo34bo9bo35bo9bo9bo9bo$5b2o6bobo9bobo6b2o27bobo9bobo41bobo9bo
bo$2o4b2o5b2o11b2o5b2o4b2o22b2o11b2o41b2o11b2o$b2o2bo29bo2b2o$o39bo!
(Edit 2: corrected 71 to 59)
Edit 3: Reduced above extra cleanup by 3g.
Last edited by ElijahKen on July 10th, 2026, 4:15 pm, edited 1 time in total.
Engineering macro-spaceships is hard.
User avatar
PK22
Posts: 613
Joined: January 25th, 2025, 11:38 am
Location: United Kingdom
Contact:

Re: Still Life Synthesis Thread

Post by PK22 »

xs17_c842hjz31243 in 15G, thanks to a soup-based 1G reduction to xs14_253gjl8zx1:

Code: Select all

x = 111, y = 57, rule = B3/S23
43bobo$43b2o$44bo3$23bo$24b2o64bobo$23b2o66b2o$91bo6bo10bo$98bobo7bo$
98b2o8b3o$93bo$94bo$92b3o2$106bo$105bo$105b3o$89b2ob2o$90bobobo$89bo3b
o7bo$88bo10b2o$89b3o8b2o$91bo$27b3o$29bo68bo$28bo69b2o$97bobo$32bo73b
3o$32b2o72bo$31bobo73bo$36b3o9bo$38bo8b2o$37bo9bobo21$bo$b2o$obo!
This reduces the maximum cost of 17-cell pseudo still lifes to 15G.
User:PK22
Learning miscellaneous programming languages.
User avatar
ElijahKen
Posts: 273
Joined: March 9th, 2024, 7:32 pm

Re: Still Life Synthesis Thread

Post by ElijahKen »

-17g to xs22_g88g0s93z1qhe21 by cooking up a new component with hints from LLS and spark search:

Code: Select all

x = 147, y = 29, rule = B3/S23
108bobo$109b2o34bo$109bo34bo$137bo6b3o$137bobo$57bo53bobo18bobo2b2o$
58b2o52b2o18b2o$57b2o53bo20bo$66bobo37bo$66b2o39b2o$67bo38b2o2$9bo112b
2o$7b2o113b2o$8b2o131bo$140bo$59bo58bo21b3o$6bo51bobo56bobo$5bo7b2o44b
2o57b2o$2bo2b3o5bobo48b2o57b2o$obo12bo48bobo56bobo$b2o11b2obo48bo58bo$
13bo2bobo46b2obo55b2obo$13bobo2bo45bo2bobo53bo2bobo$12b2o2b2o46bobo2bo
53bobo2bo7b2o$13bo49b2o2b2o53b2o2b2o8bobo$12bo51bo58bo12bo$12b2o49bo
58bo$63b2o57b2o!
Old steps (30g total, just to flip that one hook!):

Code: Select all

x = 204, y = 72, rule = B3/S23
154bo$154bobo$144bo9b2o$143bo$143b3o$153bo$93bo53bo5bobo$91bobo52bo6b
2o$92b2o52b3o5$94bo$95b2o$94b2o63bo$157b2o$152bobo3b2o$152b2o$120bo32b
o$121b2o$120b2o2$135bobo$135b2o$124bo11bo$124bobo4bo$2bo109bo11b2o4bo
$3b2o108bo16b3o$2b2o107b3o2$11bo114bo$10bo44bo69bo76bo$10b3o41bo70b3o
73bo$54b3o73bo61bobo6b3o$59bo69b2o62b2o$58b2o69bobo61bo4b2o$11b2o4bo40b
obo64bo9bo63bo$10b2o4b2o36bo69bobo7b2o62bo$4b2o6bo3bobo34bobo67bobo8b
obo61b2o$3bobo46bobo67bobo68b2o5bo$3bo48bo69bo16b2o53b2o4bo$bob2o45bo
b2o66bob2o14b2o53bo4bob2o$obo2bo43bobo2bo64bobo2bo15bo56bobo2bo$o2bob
o43bo2bobo64bo2bobo72bo2bobo$b2o2b2o43b2o2b2o64b2o2b2o72b2o2b2o$5bo48b
o69bo77bo$6bo8b3o37bo69bo77bo$5b2o8bo38b2o68b2o76b2o$16bo4$92bo$92b2o
$91bobo11$155bo$154b2o$154bobo$160bo$159b2o$159bobo!
Engineering macro-spaceships is hard.
Chris857
Posts: 745
Joined: June 10th, 2020, 11:26 pm

Re: Still Life Synthesis Thread

Post by Chris857 »

ElijahKen wrote: July 10th, 2026, 4:52 pm -17g to xs22_g88g0s93z1qhe21 by cooking up a new component with hints from LLS and spark search:
Scrolling down through the top 25 or so most expensive 22-bitters, and with a slightly more clearance banana spark and 4G boat+block, I think this should reduce xs22_g88g0s93z1qhe21 yet another 1G, and:
xs22_g88g0tbz1qhe21 down 18G (97G to 79G)
xs22_g88ciarz1101qm down 25G (122G to 97G)
xs22_g88ciarz110pi6 down 16G (118G to 102G) - the carrier was annoying clearance-wise, so I started from the one right before and modified the snake [edit: 101G I guess with a cheaper snake->carrier]
xs22_314u08k4ozxc9701 down 18G (101G to 83G) [looks like something wild happened and its only 71G]
and I noticed I repeated xs22_g88g0tbz1qhe21 three times, so I think that showed up in the chain for several of the expensive SLs

Code: Select all

x = 298, y = 446, rule = B3/S23
6bo$bo5bo$2bo2b3o$3o9$130bobo$131b2o34bo$131bo34bo$159bo6b3o$159bobo$
133bobo18bobo2b2o$134b2o18b2o$134bo20bo$128bo$129b2o$128b2o2$144b2o$144b
2o$163bo$162bo$140bo21b3o$139bobo$140b2o$25b2o118b2o$25bobo117bobo$27b
o119bo$26b2obo116b2obo$25bo2bobo114bo2bobo$25bobo2bo114bobo2bo7b2o$24b
2o2b2o114b2o2b2o8bobo$2bo22bo119bo12bo$2b2o20bo119bo$bobo20b2o118b2o2$
5b3o$7bo$6bo66$6bo$bo5bo$2bo2b3o$3o8$257bo$130bobo122bobo38bo$131b2o123b
2o37bo$131bo163b3o$159bo$159bobo$133bobo18bobo2b2o$134b2o18b2o$134bo20b
o139bo$128bo165bo$129b2o163b3o$128b2o28bo$158bobo$144b2o12b2o$144b2o149b
obo$295b2o$296bo$140bo$139bobo$140b2o$25b2o118b2o121b2o$25bobo117bobo
119bobo$27bo119bo119bo$26b2obo116b2obo116b2obo$25bo2bobob2o111bo2bobo
b2o111bo2bobob2o$25bobo2b2obo111bobo2b2obo9bo101bobo2b2obo$24b2ob2o115b
2ob2o13b2o100b2ob2o$2bo159bobo$2b2o$bobo2$5b3o$7bo161bo$6bo161b2o$168b
obo14$294b2o$294bobo$294bo29$6bo$bo5bo$2bo2b3o$3o9$130bobo$131b2o$131b
o$159bo$159bobo$133bobo18bobo2b2o$134b2o18b2o$134bo20bo$128bo$129b2o$
128b2o28bo$158bobo$144b2o12b2o$144b2o3$140bo$139bobo$140b2o$25b2o118b
2o$25bobo117bobo$27bo119bo$26b2obo116b2obo$25bo2bobo114bo2bobo$25bobo
2bo114bobo2bo12bo$24b2o2b2o114b2o2b2o12b2o$2bo22bo119bo16bobo$2b2o20b
o119bo$bobo20b2o118b2o2$5b3o$7bo161bo$6bo161b2o$168bobo55$6bo$bo5bo$2b
o2b3o$3o9$140bobo$141b2o$141bo$169bo$169bobo$143bobo18bobo2b2o$144b2o
18b2o$144bo20bo$138bo$139b2o$138b2o28bo$168bobo$154b2o12b2o$154b2o3$150b
o$149bobo$150b2o$25b2o128b2o$25bobo127bobo$27bo129bo$26b2obo126b2obo$
25bo2bobo124bo2bobo$25bobo2bo124bobo2bo12bo$24b2o2b2o124b2o2b2o12b2o$
2bo19bo2bo126bo2bo16bobo$2b2o18b2o128b2o$bobo2$5b3o$7bo171bo$6bo171b2o
$178bobo55$6bo$bo5bo$2bo2b3o$3o9$150bobo$151b2o$151bo$179bo$179bobo$153b
obo18bobo2b2o$154b2o18b2o$154bo20bo$148bo$149b2o$148b2o28bo$178bobo$164b
2o12b2o$164b2o3$160bo$159bobo$160b2o$25b2o138b2o$25bobo137bobo$27bo139b
o$26b2obo136b2obo$25bo2bobo134bo2bobo$25bobo2bo134bobo2bo12bo$24b2o2b
2o134b2o2b2o12b2o$2bo22bo139bo16bobo$2b2o20bo139bo$bobo20b2o138b2o2$5b
3o$7bo181bo$6bo181b2o$188bobo!
Post Reply