Still Life Synthesis Thread

[get_Snacked]

what could i do to get a dot here at generation 10?

Code: Select all

x = 13, y = 14, rule = LifeHistory
6.2A$2.2A3.A$2.A2.A$4.3A$7.A$6.2A$A8.D$.2A$2A2$10.A$5.2A3.A.A$4.A.A3.
2A$6.A!

[Chris857]

what could i do to get a dot here at generation 10?

Code: Select all

x = 13, y = 14, rule = LifeHistory
6.2A$2.2A3.A$2.A2.A$4.3A$7.A$6.2A$A8.D$.2A$2A2$10.A$5.2A3.A.A$4.A.A3.
2A$6.A!

This might be pretty minimal at only 3G to get a suitable spark. Which lowers xs20_g39c826z11dic from 14G to 11G.

Code: Select all

x = 68, y = 57, rule = LifeHistory
15$59.A$53.A5.A.A$51.2A6.2A$52.2A2$20.A.A$21.2A$21.A$36.2A12.A$32.2A
3.A11.A$32.A2.A13.3A$34.3A$37.A$36.2A$39.2D.2D9$56.2A$56.A.A$56.A4$
25.3A$27.A$26.A!

Previous synth

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x = 172, y = 33, rule = B3/S23
33bo$33bobo$33b2o10$158bo$12bobo141bobo$12b2o143b2o$6bo6bo3bo143bobo$
7bo9bobo51b2o50b2o36b2o6b2o$5b3o9b2o53bo51bo37bo7bo$12bo57bo51bo45bo$
10bobo54bo2b2o47bo2b2o34b2o4b2o2b2o$11b2o53bobobo2bo44bobobo2bo31bobo
4bobobo2bo$66bobo3b2o44bobo3b2o33bo6bo3b2o$obo64b2o50b2o45b2o$b2o$bo8b
o61b2o42b2o$8b2o62b2o41bobo$3bobo3b2o65b2o39bo$4b2o70bobo$4bo71bo2$109b
2o$110b2o$109bo!

[carsoncheng]

5G amphisbaena by Alex Greason:

Code: Select all

x = 19, y = 13, rule = B3/S23
10bo$10bobo$10b2o$16bo$obo4b2o7bobo$b2o3bobo7b2o$bo6bo4$11b3o$11bo
$12bo!

This completes 11-in-5.

[iNoMed]

6G snake bridge snake (reduced from 7G), found with a heavily-modified moog_stdin result:

Code: Select all

x = 31, y = 50, rule = B3/S23
14bo$13bo$13b3o23$2bo$obo4b3o$b2o4bo$8bo2$17b2o$17bobo$17bo3$4bo$4b2o$
3bobo10$28b3o$28bo$29bo!

6G honeybarge (reduced from 7G), found with a lightly-modified moog_stdin result:

Code: Select all

x = 37, y = 41, rule = B3/S23
bo$2bo$3o5$3bo$bobo$2b2o4$bo$b2o$obo5$34bo$33b2o$33bobo7$20b3o$20bo$
21bo7$34b2o$34bobo$34bo!

Both of these are intended to help with a hypothetical "12 in 6" project, bringing the number of 7G xs12s from 8 to 6.

[confocaloid]

what could i do to get a dot here at generation 10?

Code: Select all

x = 13, y = 14, rule = LifeHistory
6.2A$2.2A3.A$2.A2.A$4.3A$7.A$6.2A$A8.D$.2A$2A2$10.A$5.2A3.A.A$4.A.A3.
2A$6.A!

This might be pretty minimal at only 3G to get a suitable spark. Which lowers xs20_g39c826z11dic from 14G to 11G.

Code: Select all

x = 68, y = 57, rule = LifeHistory
15$59.A$53.A5.A.A$51.2A6.2A$52.2A2$20.A.A$21.2A$21.A$36.2A12.A$32.2A
3.A11.A$32.A2.A13.3A$34.3A$37.A$36.2A$39.2D.2D9$56.2A$56.A.A$56.A4$
25.3A$27.A$26.A!

[...]

This applies to at least three 13-bit still lives: xs20_g39c826z11dic (posted above), xs20_g39c84cz11dic (11G, down from 12G), xs20_354mhrz0696 (10G, down from 11G)

Code: Select all

x = 202, y = 32, rule = B3/S23
39bo79bo79bo$33bo5bobo71bo5bobo71bo5bobo$31b2o6b2o70b2o6b2o70b2o6b2o$
32b2o78b2o78b2o2$obo77bobo77bobo$b2o78b2o78b2o$bo79bo79bo$16b2o12bo65b
2o12bo79bo$12b2o3bo11bo67bo11bo63b2o2b2o10bo$12bo2bo13b3o60b2obo13b3o
61bo2bobo10b3o$14b3o75bob3o77b3o$17bo79bo79bo$16b2o78b2o78b2o10$36b2o
78b2o78b2o$36bobo77bobo77bobo$36bo79bo79bo4$5b3o77b3o77b3o$7bo79bo79bo
$6bo79bo79bo!

edit: processed in https://gitlab.com/hatsya/open-source/c ... 5719759879

Previous syntheses:

Code: Select all

#C [[ GRID MAXGRIDSIZE 14 THEME Catagolue ]]
#CSYNTH xs20_g39c84cz11dic costs 12 gliders (true).
#CLL state-numbering golly
x = 117, y = 19, rule = B3/S23
64bo$62b2o$46bo16b2o$44bobo$45b2o2$56bo$57b2o$12bo43b2o53b2o$6b3o
2bo54bo2b2o33bo6bo3b2o$2bo3bo4b3o49bobobo2bo31bobo4bobobo2bo$obo4b
o46b2o7b2o2b2o34b2o4b2o2b2o$b2o52b2o10bo45bo$54bo13bo38bo6bo$5b2o
5bo54b2o37b2o5b2o$4b2o5b2o93bobo$6bo4bobo88b2o$101bobo$103bo!

Code: Select all

#C [[ GRID MAXGRIDSIZE 14 THEME Catagolue ]]
#CSYNTH xs20_354mhrz0696 costs 11 gliders (true).
#CLL state-numbering golly
x = 122, y = 22, rule = B3/S23
31bobo$31b2o86bo$32bo86bobo$6bo112b2o$4bobo107bobo$5b2o108b2o$69b
2o36b2o6bo$69bobo35bobo$71bo2b2o33bo2b2o4b2o$70b2obobo32b2obobo4bo
bo$64bo5bo2bo33bo3bo6bo$b2o62b2o4bobo33b2ob2o$obo61b2o6bo$2bo15bo$
13bo4bobo$13b2o3b2o$12bobo3$70bo3b3o$70b2o2bo$69bobo3bo!

[HerscheltheHerschel]

Does this still life has a synthesis? Just a question.

Code: Select all

x = 21, y = 23, rule = B3/S23
2o6bo$bo6b3o$bobo7bo$2bobo5bobo$3bobo3bobo$4bo2bo2bo$5b5o2$7bo$6bobo$
6bo2bob2o$7bobobobo$8b2obo2bo$12bobo$13bo2$11b5o$10bo2bo2bo$9bobo3bob
o$8bobo5bobo$9bo7bobo$10b3o6bo$12bo6b2o!

[confocaloid]

Does this still life has a synthesis? Just a question. [...]

If you mean a completed synthesis, then Catagolue has an "Identify" form that can be used to get this sort of information: https://catagolue.hatsya.com/object
Paste the RLE into the form and press the "Identify" button. In this case, it leads to the object page xs70_ydg8ka23zwg8gy1okia40v4hwo8z470129u08kia6y012521zggka521z1 which does not show any displayed synthesis. That means nobody completed a synthesis for this specific still life. (Of course, the same is true for almost all large still lives. Large low-period objects are usually synthed only when they have some kind of use in bigger patterns.)

[affamatodidio]

Re-posting this 60 glider improvement.

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x = 60, y = 33, rule = B3/S23
57bobo$57b2o$58bo4$3bobo$4b2o$4bo4$bo$2bo$3o10$30bo$30bobo$30b2o$22bo
$23b2o$22b2o$32bo$31bo$31b3o!

66g -> 6g.
Went unnoticed.

[confocaloid]

Went unnoticed.

BTW you can submit syntheses yourself via the form at the end of the page https://catagolue.hatsya.com/syntheses
(I just submitted this synthesis, though, so it should be processed and appear at xs21_32qj9q32ac a few hours later).
Edit: the submitted synthesis was processed in https://gitlab.com/hatsya/open-source/c ... 5756233551

[affamatodidio]

Code: Select all

x = 55, y = 84, rule = B3/S23
5bo$3bobo$4b2o2$53bo$52bo$52b3o27$33bo$28bo3bobo$28bo4b2o$28bo$7bo$8b
o15b3o3b3o$6b3o$10b3o$12bo30bo$11bo30bo$42b3o$46b3o$22b3o3b3o15bo$47b
o$26bo$20b2o4bo$20bobo3bo$21bo27$3o$2bo$bo2$49b2o$49bobo$49bo!

[affamatodidio]

Pathway to unsynthed xs22

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x = 49, y = 87, rule = B3/S23
bo$2bo$3o44$40b2o$39bo2bo3b2o$40b2o3bo2bo$45bo2bo$46b2o3$39b2o$24b2o12b
obo$24b2o12bobo$38b2o3$35b2o$34bo2bo$35b2o23$17b3o$19bo$18bo!

Different unsynthed xs22

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x = 26, y = 18, rule = B3/S23
17bo$17bo5b2o$17bo4bo2bo$22bobo$23bo7$12bo$bo8b4o$obo6bo$obo5bo3bo$bo
6bo3bo$9bobo$10bo!

https://catagolue.hatsya.com/object/xs2 ... 9mic/b3s23 is promising


solved one

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x = 173, y = 88, rule = B3/S23
63bo$63bobo$63b2o12$97bobo$98b2o$98bo4$117bo$118bo$116b3o4$2bo$obo$b2o
4$37bo$36bo$36b3o6$127bo$127bobo$127b2o$124bo$118b2o5bo$119b2o2b3o$118b
o2$135b2o$135bo$132b2obobo$132bobob2o$11bobo120bo$12b2o119b2o$12bo3bo
bo$16b2o133bo$17bo126b3o2b2o$144bo5b2o$145bo$141b2o$140bobo$142bo18$151b
3o$151bo$152bo4$171bo$170b2o$170bobo!

[affamatodidio]

Code: Select all

x = 29, y = 26, rule = B3/S23
19bo$20b2o$19b2o7$28bo$28bo$10b2o6b3o7bo$8b2obo8bo$8bo8bob2o$o7b3o6b2o
$o$o7$8b2o$7b2o$9bo!

Freebie xs22 for anyone who wants to put effort in, above

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x = 33, y = 30, rule = B3/S23
22bo$21bobo3bo$14bobo5bobobobo$15b2o6b2obobo$15bo11bo2$31b2o$19b2o10b
2o$18b2o$17b2o$18b2o2$7b2o13b2o$7b2o13b2o3$9b2o13b2o$9b2o13b2o2$13b2o
$14b2o$13b2o$2o10b2o$2o2$5bo11bo$4bobob2o6b2o$4bobobobo5bobo$5bo3bobo
$10bo!

[qqd]

Code: Select all

x = 29, y = 26, rule = B3/S23
19bo$20b2o$19b2o7$28bo$28bo$10b2o6b3o7bo$8b2obo8bo$8bo8bob2o$o7b3o6b2o
$o$o7$8b2o$7b2o$9bo!

Freebie xs22 for anyone who wants to put effort in, above

Code: Select all

x = 33, y = 30, rule = B3/S23
22bo$21bobo3bo$14bobo5bobobobo$15b2o6b2obobo$15bo11bo2$31b2o$19b2o10b
2o$18b2o$17b2o$18b2o2$7b2o13b2o$7b2o13b2o3$9b2o13b2o$9b2o13b2o2$13b2o
$14b2o$13b2o$2o10b2o$2o2$5bo11bo$4bobob2o6b2o$4bobobobo5bobo$5bo3bobo
$10bo!

I think this is feasible for xs22_0g89f0kcz320f91:

Code: Select all

x = 209, y = 32, rule = LifeHistory
206.A$206.A.A$153.A52.2A$151.A.A$152.2A$89.A$89.A.A$4.A.A82.2A$5.2A
192.A$5.A192.A.A$198.A.A$199.A$195.2A$141.E19.3A31.A.A$64.2A75.2E.2A
11.E40.A$64.2A75.E2.2A10.E36.4A.A2.A$9.A61.2A18.3A46.E10.2A2.E37.A2.A
.4A$10.2A59.2A18.A47.E11.2A.2E40.A$9.2A42.3A36.A40.3A19.E41.A.A$13.3A
182.2A$15.A179.A$14.A179.A.A$194.A.A$195.A$.A$.2A$A.A$143.2A$143.A.A$
143.A43.2A$186.A.A$188.A!

[GUYTU6J]

Freebie xs22 for anyone who wants to put effort in, above

13G xs22_0g89f0kcz320f91

Code: Select all

x = 29, y = 44, rule = B3/S23
19bo$17bobo$18b2o4$24bo$22bobo$23b2o$13bobo$14b2o$14bo7$obo23b3o$b2o
23bo$bo19b3o3bo$23bo$22bo2$10b2o$9bobo$11bo$5b3o$7bo$6bo12b3o$19bo$20b
o3$b2o$2b2o$bo5$25b2o$25bobo$25bo!

xs16_drz32qm in 10G based on this soup with a gencols-made cleanup

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x = 38, y = 47, rule = B3/S23
33bobo$33b2o$34bo2$17bo$16bobo$15bo2bo$16b2o4$34b2o$25bobo5b2o$25b2o8b
o$26bo3$35b3o$35bo$36bo5$21bo$20bo$20b3o4$23b2o$23bobo$23bo4$23b3o$23b
o$24bo6$3o$2bo$bo!

Any progress for 16-in-11?
EDIT next day:
xs16_0g8421eg84cz32 in 9G based on this soup

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x = 87, y = 23, rule = B3/S23
5bo$3bobo$4b2o7bo$14b2o12bobo$13b2o13b2o$29bo4$82bo$80b2o$81b2o$76b2o$
75bobo$20b3o53bo$20bo60b3o$16b2o3bo63b2o$2o13bobo68bo$b2o14bo9b3o49bo
5bo$o26bo48bobobo3bo$19b2o7bo47b2o2bo2bo$19bobo58bobo$19bo61bo!

Applying known fast components gives four more

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x = 210, y = 96, rule = B3/S23
5bo119bo$3bobo117bobo$4b2o7bo110b2o7bo$14b2o12bobo103b2o12bobo$13b2o
13b2o103b2o13b2o$29bo119bo3$155bo$82bo72bobo44bo$80b2o73b2o43b2o$36bo
44b2o118b2o$36bobo37b2o118b2o$36b2o37bobo117bobo$20b3o53bo63b3o53bo$
20bo60b3o56bo16bo43b3o$16b2o3bo63b2o49b2o3bo13b2o48b2o$2o13bobo68bo33b
2o13bobo18b2o48bo$b2o14bo9b3o49bo5bo35b2o14bo9b3o49bo5bo$o26bo48bobobo
3bob3o31bo26bo48bobobo3bob3o$19b2o7bo47b2o2bo2bo2bo2bo49b2o7bo47b2o2bo
2bo2bo2bo$19bobo58bobo3bo2bo49bobo58bobo3bobo$19bo61bo5b2o50bo61bo5bo
6$154b2o$154bobo$35bo118bo$34b2o$34bobo121b2o$158bobo$158bo26$5bo119bo
$3bobo117bobo$4b2o7bo110b2o7bo$14b2o12bobo103b2o12bobo$13b2o13b2o103b
2o13b2o$29bo119bo4$82bo71bo47bo$80b2o72bobo43b2o$81b2o71b2o45b2o$35bo
40b2o118b2o$35bobo37bobo117bobo$20b3o12b2o39bo63b3o53bo$20bo60b3o56bo
60b3o$16b2o3bo63b2o49b2o3bo14bo48b2o$2o13bobo68bo33b2o13bobo16b2o50bo$
b2o14bo9b3o49bo5bo35b2o14bo9b3o5b2o42bo5bo$o26bo48bobobo3bo35bo26bo48b
obobo3bo$19b2o7bo47b2o2bo2bob3o51b2o7bo47b2o2bo2bob3o$19bobo58bobo2bo
2bo50bobo58bobo2bo2bo$19bo61bo3bo2bo50bo61bo3bobo$86b2o118bo6$153b2o$
153bobo$34bo118bo$33b2o$33bobo121b2o$157bobo$157bo!

[affamatodidio]

Freebie xs22 for anyone who wants to put effort in, above

13G xs22_0g89f0kcz320f91

Code: Select all

x = 29, y = 44, rule = B3/S23
19bo$17bobo$18b2o4$24bo$22bobo$23b2o$13bobo$14b2o$14bo7$obo23b3o$b2o
23bo$bo19b3o3bo$23bo$22bo2$10b2o$9bobo$11bo$5b3o$7bo$6bo12b3o$19bo$20b
o3$b2o$2b2o$bo5$25b2o$25bobo$25bo!

xs16_drz32qm in 10G based on this soup with a gencols-made cleanup

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x = 38, y = 47, rule = B3/S23
33bobo$33b2o$34bo2$17bo$16bobo$15bo2bo$16b2o4$34b2o$25bobo5b2o$25b2o8b
o$26bo3$35b3o$35bo$36bo5$21bo$20bo$20b3o4$23b2o$23bobo$23bo4$23b3o$23b
o$24bo6$3o$2bo$bo!

Any progress for 16-in-11?

Promising for 16-in-11:

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x = 24, y = 14, rule = B3/S23
o$b2o$2o2$15b3o$14bo3bo$13bo5bo$14bo3bo3bo$10b2o3b3o3bobo$10b2o9bobo$
6bo15bo$6bo$6bo$14b3o!

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x = 15, y = 21, rule = B3/S23
8bo$7bobo$7bobo$8bo2$o$o7bo$o6b3o$6bob3o$6bo3b2o$2b2o3b3obo$2b2o4b3o4$
5bo6bo$4bobo4bobo$4bo2bo3bo2bo$5b2o4bo2bo$11bobo$11b3o!

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x = 12, y = 20, rule = B3/S23
5b2o$5b2o5$8b2o$7bob2o$10bo$3o6b2o4$7b2ob2o$8b3o$9bo4$9b3o!

Code: Select all

x = 16, y = 27, rule = B3/S23
b2o$o2bo$b2o8$6b3o4b2o$5bo2bo4b2o$4bo$5bo2bo$6b3o2$13bo$12b3o$11b2ob2o
$12b3o$3b2o8bo$3bobo$4b2o2$13b2o$13bobo$14b2o!

Code: Select all

x = 29, y = 22, rule = B3/S23
4bo$4bo$4bo8bo$12b3o$3o9bobo$11b2o13b2o$4bo20bo2bo$4bo20bo2bo$4bo21b2o
3$15b2ob2o$15bo3bo$15bo3bo$16bobo$17bo4$17bo$17bo$17bo!

https://catagolue.hatsya.com/object/xs1 ... z023/b3s23 has 106 c1 soups
https://catagolue.hatsya.com/object/xs1 ... z146/b3s23 has 26 c1 soups

[affamatodidio]

Unsynthed xs22:

Code: Select all

x = 33, y = 17, rule = B3/S23
b2o3bo$o2bobobo$obo3b2o4bo$bo9bobo$10bo3bo$11bobo$12bo4$20bo$19bobo$18b
o3bo$19bobo9bo$20bo4b2o3bobo$25bobobo2bo$26bo3b2o!

All of these have tons of soups, I'll comb through them.
https://catagolue.hatsya.com/object/xs2 ... 3056/b3s23
https://catagolue.hatsya.com/object/xs2 ... 6221/b3s23
https://catagolue.hatsya.com/object/xs2 ... c321/b3s23
https://catagolue.hatsya.com/object/xs2 ... 0eip/b3s23
https://catagolue.hatsya.com/object/xs2 ... 3056/b3s23
https://catagolue.hatsya.com/object/xs2 ... e121/b3s23
https://catagolue.hatsya.com/object/xs2 ... ge21/b3s23
https://catagolue.hatsya.com/object/xs2 ... 1eio/b3s23
https://catagolue.hatsya.com/object/xs2 ... 6952/b3s23
https://catagolue.hatsya.com/object/xs2 ... dia4/b3s23
https://catagolue.hatsya.com/object/xs2 ... 0252/b3s23
https://catagolue.hatsya.com/object/xs2 ... cja4/b3s23
https://catagolue.hatsya.com/object/xs2 ... ra96/b3s23
https://catagolue.hatsya.com/object/xs2 ... m921/b3s23
https://catagolue.hatsya.com/object/xs2 ... 9mic/b3s23
https://catagolue.hatsya.com/object/xs2 ... ri96/b3s23
https://catagolue.hatsya.com/object/xs2 ... nge2/b3s23
https://catagolue.hatsya.com/object/xs2 ... 6221/b3s23
https://catagolue.hatsya.com/object/xs2 ... 3z01/b3s23
https://catagolue.hatsya.com/object/xs2 ... 0121/b3s23
https://catagolue.hatsya.com/object/xs2 ... 0321/b3s23
https://catagolue.hatsya.com/object/xs2 ... zx11/b3s23
https://catagolue.hatsya.com/object/xs2 ... u146/b3s23

Solved One:

Code: Select all

x = 187, y = 101, rule = B3/S23
bo$2bo$3o17$68bo$66b2o$67b2o85bo$155bo$153b3o8$161b2o$160bo2bo$160bo2b
o$161b2o2$8bo$9bo$7b3o4$66bo$64b2o$65b2o$172bo$64bo106bobo$42bo20b2o106b
obo$40bobo20bobo103b2obo$41b2o125bobo$168bo2bo$61b2o106bobo$38bobo20b
obo103bob2o$39b2o20bo104bobo$39bo126bobo$167bo$37b2o$38b2o$37bo4$94b3o
$94bo$95bo2$177b2o$176bo2bo$176bo2bo$177b2o8$184b3o$184bo$35b2o148bo$
36b2o$35bo17$101b3o$101bo$102bo!

Unfinished:

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x = 28, y = 38, rule = B3/S23
11bo$11bo$11bo2$o$2o$b2o9b3o$bo$o9bo5bo$10bo5bo$10bo5bo2$12b3o$21b2o$
20bobo$20b2o7$6b2o$5bobo$5b2o$13b3o2$11bo5bo$11bo5bo$11bo5bo9bo$26bo$
13b3o9b2o$26b2o$27bo2$16bo$16bo$16bo!

Code: Select all

x = 41, y = 38, rule = B3/S23
2bo$bobo$bobo$2bo4$18b3o2$27bo$26bobo$29bo$2o5b2o5bo10bo2bo$2o5b2o4bo
bo9b3o$13bobo$14bo7$26bo$25bobo$13b3o9bobo4b2o5b2o$12bo2bo10bo5b2o5b2o
$11bo$12bobo$13bo2$20b3o4$38bo$37bobo$37bobo$38bo!

Code: Select all

x = 95, y = 82, rule = B3/S23
9bobo81bo$10b2o80bo$10bo81b3o22$51bo$51bo$51bo5$61b2o$60bo2bo$61b2o2b
2o$65bobo$65bo$46b2o$46b2o3$35b2o21b2o$35b2o21b2o3$47b2o$47b2o$29bo$27b
obo$28b2o2b2o$31bo2bo$32b2o5$43bo$43bo$43bo22$3o81bo$2bo80b2o$bo81bob
o!

Code: Select all

x = 24, y = 14, rule = B3/S23
10b3o2$8bo5bo$2o6bo5bo$obo5bo5bo$2bo18bo$b2o20bo$o20b2o$2bo18bo$9bo5b
o5bobo$9bo5bo6b2o$9bo5bo2$11b3o!

Code: Select all

x = 26, y = 15, rule = B3/S23
14bo$13bob2ob3o2b2o$13bobo6bo2bo$14bo8b2o8$b2o8bo$o2bo6bobo$b2o2b3ob2o
bo$11bo!

[carsoncheng]

xs15_31248a51246 in 9G (5G xs11_25icz65 + 4G component)

Code: Select all

x = 24, y = 29, rule = B3/S23
o$b2o$2o11$5bo$6b2o$5b2o10bo4b2o$16bobo2bobo$17bo2bo$18b2o$7b3o$9bo$8b
o5$2b3o$4bo$3bo!

This completes 15-in-10.

EDIT: xs16_wok21e8zdb in 12G, down from 13G:

Code: Select all

x = 23, y = 22, rule = B3/S23
13bo$12bobo$12bo2bo$11b2o3bo$15b2o$17b2o$17bobo$18bo7$8b2o6bo3b3o$7bob
o6b2o2bo$9bo5bobo3bo$b2o$obo$2bo15bo$17b2o$17bobo!

The same component also reduces xs16_0kc3213z34a4 from 13G to 12G:

Code: Select all

x = 23, y = 20, rule = B3/S23
12b2o$11bo2bobo$10bobo2b2o$11bo5b2o$17bobo$18bo7$8b2o6bo3b3o$7bobo6b2o
2bo$9bo5bobo3bo$b2o$obo$2bo15bo$17b2o$17bobo!

xs16_3lozx354213 in 9G, down from 12G:

Code: Select all

x = 28, y = 41, rule = B3/S23
8$10bo$11b2o$10b2o11$15bo$16b2o$15b2o6$33bo$32bobo$33b2o$35b2o$35b
o$36bo$37bo$36b2o3$17b3o$19bo$18bo5$12b3o$14bo$13bo!

xs16_3loz122c826 in 12G, down from 13G:

Code: Select all

x = 24, y = 31, rule = B3/S23
o5bo$b2o4bo$2o3b3o7$22b2o$23bo$22bo$21bo$21b2o$23bo$21b2o$17b2obo$17b
ob2o$4b2o$3bobo$5bo8$b3o$3bo$2bo!

xs16_25icggozx1ac in 12G, down from 13G:

Code: Select all

x = 29, y = 24, rule = B3/S23
bo$2bo3bo$3o4b2o14b2o$6b2o16bo2b2o$24bobobo$22b2obo$21bo2bo$22b2o10$7b
3o$9bo$8bo2$12bo$12b2o$11bobo!

[carsoncheng]

Here are two very close calls to a 15G synthesis of xs17_jhke0mqz1, the only 17-bit still life that costs 16 gliders:

11G xs17_32as0qmz032 + 4G conversion + 1G cleanup (16G total)

Code: Select all

x = 30, y = 32, rule = B3/S23
14bo$5bo6bobo$3bobo7b2o$4b2o11$28b2o$23b2o3bo$23bo2bobo$25b3o$8b3o$10b
o14b2obo$9bo15bob2o2$8bo$8b2o$7bobo5$2o$b2o$o!

10G xs16_g39s0qmz11 + 4G conversion + 2G cleanup (16G total)

Code: Select all

x = 44, y = 37, rule = B3/S23
43bo$41b2o$42b2o7$18bo$19bo$17b3o2$13bobo$14b2o$14bo$18b3o$20bo$19bo12b
2o$28b2o3bo$28bo2bo$30b3o2$29bob2o$19b3o7b2obo$21bo$20bo8$3o$2bo$bo!

Could anyone run more QuFince searches / reduce the conversions / reduce the base still lifes / find more base still life targets / reduce the direct synthesis to achieve 17-in-15?

[HerscheltheHerschel]

Crosspost from unsure discoveries:

This creates an interesting partial SL at gen. 250:

Code: Select all

x = 10, y = 11, rule = B3/S23
6bo$5bo$5b3o2$o$b2o$2o$6b2o$6bo$7b3o$9bo!

[Goldtiger997]

Here are two very close calls to a 15G synthesis of xs17_jhke0mqz1, the only 17-bit still life that costs 16 gliders:...
Could anyone run more QuFince searches / reduce the conversions / reduce the base still lifes / find more base still life targets / reduce the direct synthesis to achieve 17-in-15?

I found a suitable 5G carrier to fishhook converter:

Code: Select all

x = 30, y = 28, rule = B3/S23
27bobo$27b2o$7bo20bo$5bobo$6b2o4$8bobo$9b2o$9bo3$26b2o$22b2o3bo$22bo2b
o$24b3o2$23bob2o$23b2obo2$7b3o$9bo$8bo2$bo$b2o$obo!

17-in-15 is complete! Here are a couple of extra converters I found along the way:

Code: Select all

x = 76, y = 28, rule = B3/S23
16bo39bobo$16bobo38b2o$16b2o39bo7$47bo8bobo$7bobo8bo29bo8b2o$8b2o6b2o
28b3o8bo$8bo8b2o$b2o$obo$2bo5$4b3o7b2o58b2o$6bo3b2o3bo36bo16b2o4bo$5bo
4bo2bo38b2o14bo2bobo$12b3o36bobo14b2o2b3o2$11bob2o42b3o11bob2o$11b2obo
44bo11b2obo$58bo!

[May13]

xs15_321fgka6 in 6G, down from 7G:

Code: Select all

x = 46, y = 45, rule = B3/S23
22bo$22bobo$22b2o3$21b3o$23bo$22bo7$43b3o$43bo$44bo$23b2o$24b2o$23bo
20b2o$43b2o$45bo21$bo$b2o$obo!

[PHPBB12345]

How to synthesizing Snark64?

Code: Select all

x = 24, y = 27, rule = B3/S23
14bo$13bobo$13bob3o$10b2obo4bo$10bobobobobo$12bobob2o4b2o$4b2o5bobo8b
o$4b2o6bo7bobo$20b2o3$9b2o$8bo2bo$9b2o6$17b2o$4b2o10bobo$2obobo10b2o$
ob2obobo$6b2o3b2o3b4o$11b2o4bo2bo$15bo3b2o$15b2o!

[confocaloid]

How to synthesizing Snark64?

Code: Select all

x = 24, y = 27, rule = B3/S23
14bo$13bobo$13bob3o$10b2obo4bo$10bobobobobo$12bobob2o4b2o$4b2o5bobo8b
o$4b2o6bo7bobo$20b2o3$9b2o$8bo2bo$9b2o6$17b2o$4b2o10bobo$2obobo10b2o$
ob2obobo$6b2o3b2o3b4o$11b2o4bo2bo$15bo3b2o$15b2o!

This variant might be easier to construct

Code: Select all

x = 99, y = 46, rule = B3/S23
49bobo$bo47b2o$2bo47bo$3o42bobo$45b2o$46bo15$74b2o3bo$72b3obobobo$71bo
4bobobo$71bobobobobo$66b2o4b2obobo$67bo8bobo5b2o$67bobo7bo6b2o$68b2o$
51b2o$50b2o$52bo26b2o$39b2o37bo2bo$38b2o39b2o$10b3o27bo$12bo$11bo$14b
2o$13bobo$15bo5b2o48b2o$21bobo10b2o35bobo10b2o$3b2o17b2o10bobob2o12bo
19b2o10bobob2o$4b2o26bobob2obo11b2o29bobob2obo$3bo16b4o3b2o3b2o17bobo
16b4o3b2o3b2o12b3o$19bo2bo4b2o40bo2bo4b2o17bo$19b2o3bo44b2o3bo22bo$23b
2o48b2o!

Edit: here is a synthesis, starting from xs17_39c8a6z0356

Code: Select all

x = 670, y = 57, rule = B3/S23
290bobo$242bo47b2o$243bo47bo$241b3o42bobo$286b2o$287bo6$314bo$315bo$
313b3o$480bobo83bobo$480b2o84b2o$481bo85bo4$345b2o3bo94b2o3bo94b2o3bo
94b2o3bo$215bo127b3obobobo91b3obobobo91b3obobobo91b3obobobo$215bobo
124bo4bobobo90bo4bobobo90bo4bobobo90bo4bobobo$215b2o109bobo13bobobobob
o91bobobobobo91bobobobobo91bobobobobo$327b2o14b2obobo88b2o4b2obobo88b
2o4b2obobo88b2o4b2obobo$327bo19bobo88bo8bobo88bo8bobo88bo8bobo5b2o$
348bo89bobo7bo89bobo7bo89bobo7bo6b2o$439b2o24bobo71b2o98b2o$292b2o171b
2o$291b2o33b2o138bo$293bo31bobo140b3o79b2o98b2o$19bobo16bo241b2o45bo
140bo80bo2bo96bo2bo$19b2o15b2o241b2o188bo80b2o98b2o$20bo16b2o212b3o27b
o$253bo$252bo$129bo73bo51b2o$128bo73bo51bobo313bo$2b2o98b2o20b2o2b3o
51b2o18b3o51bo5b2o78b2o98b2o98b2o25b2o71b2o$2bobo97bobo18bo2bo55bobo
10b2o65bobo10b2o65bobo10b2o85bobo10b2o85bobo10b2o12bobo70bobo10b2o$3b
2o98b2o18bo2bo56b2o10bo48b2o17b2o10bobob2o12bo49b2o10bobob2o82b2o10bob
ob2o82b2o10bobob2o82b2o10bobob2o$124b2o67bobo4b2o43b2o26bobob2obo11b2o
59bobob2obo92bobob2obo92bobob2obo92bobob2obo$b4o96b4o3b2o71b4o3b2o3b2o
4bobo10bo31bo16b4o3b2o3b2o17bobo27b2o17b4o3b2o3b2o86b4o3b2o3b2o86b4o3b
2o3b2o86b4o3b2o3b2o12b3o$o2bo96bo2bo4b2o70bo2bo4b2o11bo9b2o47bo2bo4b2o
53b2o15bo2bo4b2o90bo2bo4b2o90bo2bo4b2o90bo2bo4b2o17bo$2o3bo94b2o3bo74b
2o3bo25bobo46b2o3bo56bo17b2o3bo94b2o3bo94b2o3bo94b2o3bo22bo$4b2o98b2o
78b2o32b2o44b2o78b2o98b2o98b2o98b2o$218bobo$16b2o102b2o96bo$15bobo101b
2o$17bo103bo5$23bo$22b2o$22bobo!

[Chris857]

xs28_cc0v1s6zw638f033 in 10G from soup.

Code: Select all

x = 160, y = 53, rule = B3/S23
32bo$31bo$31b3o2$38bobo$38b2o$39bo117bobo$157b2o$158bo10$108bo$109b2o
$108b2o$133b2o$132bo2bo$133b2o$127b2o$126bo2bo$127b2o6$26b2o108b2o$25b
o2bo106bo2bo$26b2o108b2o$20b2o108b2o$b2o16bo2bo106bo2bo$obo17b2o108b2o
$2bo152b2o$154b2o$156bo10$106bo$106b2o$105bobo!

xs28_03iajkczcajkjgzw1w1 in 12G, down from 46G, based on the 8G_C2_1_stdin result.

Code: Select all

x = 71, y = 79, rule = B3/S23
68bo$67bo$67b3o4$52bo$51bo$12bo38b3o$13b2o$12b2o2$68bo$68bobo$68b2o10$
12bo$13b2o$12b2o2$50bo$50bobo$50b2o18$19b2o$18bobo$20bo2$57b2o$56b2o$
58bo10$b2o$obo$2bo2$57b2o$56b2o$17b3o38bo$19bo$18bo4$b3o$3bo$2bo!

xs28_0g04s0gbap3zc95dw32 in 22G from soup.

Code: Select all

x = 187, y = 139, rule = B3/S23
103bo$102bo$102b3o28$16bo$14bobo$15b2o10bo$25bobo$26b2o3$30bo$28bobo$
29b2o3$70bobo$70b2o$71bo10$85bo73bo$84bo75bo$44bobo37b3o71b3o$45b2o$45b
o3$30bo$31b2o132bo$30b2o133bo$78bo86bo$78bobo4bo89b2o$78b2o5bobo84b2o
2bo$85b2o86bobo$170bo2bob2o$170b3o2$18b2o152b3o$17bobo5b2o141b2obo2bo
$19bo4bobo142bobo$26bo141bo2b2o$73b2o93b2o$72b2o105bo$74bo104bo$179bo
2$59bo$58b2o$18b3o37bobo$20bo$19bo164b3o$184bo$185bo8$33bo$33b2o$32bo
bo3$74b2o$74bobo$74bo3$77b2o$77bobo$77bo10b2o$88bobo$88bo28$3o$2bo$bo
!

[May13]

xs22_o497079icz01ac in 9G, down from 12G (1G cleanup of 4G dirty component from QuFince_stdin):

Code: Select all

x = 37, y = 38, rule = B3/S23
obo$b2o$bo3$16bo$17bo$15b3o7$15bo$16bo$14b3o8$30bo4b2o$29bobo2bobo$30b
o2bo$31b2o7$6b3o$8bo5b3o$7bo8bo$15bo!

Various syntheses based on QuFince_stdin and Goldtiger997's component:

Code: Select all

x = 0, y = 0, rule = B3/S23
38bo$36b2o$37b2o3$14bo$15bo$13b3o24bo$38b2o$39b2o9$2bo$obo$b2o86bo$88b
o$85bo2b3o$86bo$11bobo70b3o$12b2o$12bo$76bo7b2o$74bobo7bo$75b2o2b3o3bo
$25b2o54bo4bo$24bo2bob2o49bo6bob2o$24b2obobo56b2obo$27bo2bo42bo6bo6bo
2bo$11b3o13bob2o42b2o5b2o5bob2o$13bo14bo2b2o39bobo4bobo6bo2b2o$12bo16b
o2bo56bo2bo$30b2o58b2o5$2b2o$3b2o$2bo12$38b2o$8b2o27b2o$9b2o28bo$8bo$
46b2o$45b2o$47bo!

x = 0, y = 0, rule = B3/S23
38bo$36b2o$37b2o3$14bo$15bo$13b3o24bo$38b2o$39b2o9$2bo$obo$b2o86bo$88b
o$85bo2b3o$86bo$11bobo70b3o$12b2o$12bo$76bo7b2o$74bobo7bo$75b2o2b3o3bo
$25b2o4bo49bo4bo4bo$24bo2bo2bobo47bo6bo2bobo$24b2obo2bobo53b2o2bobo$
27bob2ob2o39bo6bo6bob2ob2o$11b3o13bo2bo42b2o5b2o5bo2bo$13bo14bobo41bob
o4bobo6bobo$12bo16bo59bo6$2b2o$3b2o$2bo12$38b2o$8b2o27b2o$9b2o28bo$8bo
$46b2o$45b2o$47bo!

x = 0, y = 0, rule = B3/S23
38bo$36b2o$37b2o3$14bo$15bo$13b3o24bo$38b2o$39b2o9$2bo$obo$b2o86bo$88b
o$85bo2b3o$86bo$11bobo70b3o$12b2o$12bo$76bo7b2o$74bobo7bo$75b2o2b3o3bo
$25b2o54bo4bo$24bo2bo3b2o47bo6bo3b2o$24b2obo2bobo53b2o2bobo$27bobo43bo
6bo6bobo$11b3o13bo2b2o41b2o5b2o5bo2b2o$13bo14bobo2bo38bobo4bobo6bobo2b
o$12bo16bo2b2o55bo2b2o6$2b2o$3b2o$2bo12$38b2o$8b2o27b2o$9b2o28bo$8bo$
46b2o$45b2o$47bo!

x = 0, y = 0, rule = B3/S23
38bo$36b2o$37b2o3$14bo$15bo$13b3o24bo$38b2o$39b2o9$2bo$obo$b2o86bo$88b
o$85bo2b3o$86bo$11bobo70b3o$12b2o$12bo$76bo7b2o$74bobo7bo$75b2o2b3o3bo
$25b2o54bo4bo$24bo2bo3b2o47bo6bo3b2o$24b2obo3bobo52b2o3bobo$27bob2o2bo
39bo6bo6bob2o2bo$11b3o13bo2bobo40b2o5b2o5bo2bobo$13bo14bo2bo40bobo4bob
o6bo2bo$12bo16b2o58b2o6$2b2o$3b2o$2bo12$38b2o$8b2o27b2o$9b2o28bo$8bo$
46b2o$45b2o$47bo!

x = 0, y = 0, rule = B3/S23
14bobo$15b2o$15bo4$o$b2o$2o27bo7bo$27b2o7bo$28b2o6b3o22$7b3o6b2o$9bo7b
2o$8bo7bo27b2o$43b2o$45bo4$30bo$29b2o$29bobo!

x = 0, y = 0, rule = B3/S23
obo$b2o$bo2$25bobo$25b2o$26bo3$33bo$32bo$32b3o$bobo$2b2o$2bo17$35bo$
34b2o$34bobo$3b3o$5bo$4bo3$11bo$11b2o$10bobo2$36bo$35b2o$35bobo!

x = 0, y = 0, rule = B3/S23
bo32bo$2bo30bo$3o30b3o3$4bobo$5b2o$5bo4$35bo$33b2o$34b2o15$2b2o$3b2o$
2bo4$32bo$31b2o$31bobo3$2b3o30b3o$4bo30bo$3bo32bo!

x = 0, y = 0, rule = B3/S23
2bo$obo$b2o33$25bo$26bo$24b3o28bo$54bo5bobo$54b3o3b2o$61bo2$27bo$28b2o
$27b2o4$53b2o$52b2o$54bo2$20bo$20b2o3b3o$19bobo5bo$26bo28b3o$55bo$56bo
33$79b2o$79bobo$79bo!

x = 0, y = 0, rule = B3/S23
7bo$5bobo$6b2o2$24bo$24bobo$24b2o2$30bo$9bo19bo$7bobo19b3o$8b2o2$105bo
$104bo$81b2o21b3o$81b2o2$81b4o$81bo2bo15b2o$70b2o13b2o13b2o$70b2o15bo
2bo$87b4o2$89b2o$65b3o21b2o$67bo$66bo2$22b2o$3o19bobo$2bo19bo$bo2$6b2o
$5bobo$7bo2$24b2o$24bobo$24bo!

x = 0, y = 0, rule = B3/S23
93bo$91bobo$92b2o3$93bo$91bobo$36bo55b2o$36bobo$36b2o57b2o28bo$95b2o
28bobo$125b2o2$4bo102b2o$2bobo102b2o10b2o$3b2o113bo2bo$102b3o14b2o$87b
2o$87b2o$34bo71b2o$o32bo72bo$b2o30b3o71bo$2o78b2o5b2o19bo$79bobo5bobo
17b2o3b2o$81bo6bo17bo2b2o2bo17bo6bo$106b2o3b2o17bobo5bobo$38b2o71bo19b
2o5b2o$4b3o30b2o73bo$6bo32bo73bo$5bo106b2o$131b2o$131b2o$99b2o14b3o$
35b2o61bo2bo$35bobo61b2o10b2o$35bo75b2o2$93b2o$92bobo28b2o$2b2o90bo28b
2o$bobo$3bo122b2o$126bobo$126bo3$126b2o$126bobo$126bo!

x = 0, y = 0, rule = B3/S23
15bobo$16b2o$16bo4$o$b2o16bo$2o5bo12bo$8b2o8b3o12bo$7b2o22b2o$32b2o22$
32b2o$7b2o22b2o$8b2o8b3o12bo$7bo12bo$19bo5$16bo$16b2o$15bobo!

x = 0, y = 0, rule = B3/S23
4bo$5b2o$4b2o3$30bo$9bo19bo$10bo18b3o$8b3o14bo$23b2o$24b2o18$6b2o$7b2o
$6bo14b3o$3o18bo$2bo19bo$bo3$26b2o$25b2o$27bo!

x = 0, y = 0, rule = B3/S23
45bo40bo$45bobo36bobo$45b2o38b2o2$111bo$15bo95bobo$13bobo95b2o$14b2o$
38bo52bo10b2o$37bo53bo10b2o$16bo20b3o51bo$14bobo$15b2o89b2o$87b2o17b2o
$88bo2bo$88bobobo$89b2obo$93b2o$95bob2o$95bobobo$96bo2bo$80b2o17b2o$
31b2o47b2o$31bobo$8b3o20bo64bo$10bo73b2o10bo$9bo74b2o10bo$32b2o$32bobo
40b2o$32bo41bobo$76bo2$b2o98b2o$obo98bobo$2bo98bo!

x = 0, y = 0, rule = B3/S23
4bo$5bo$3b3o5$9bobo$10b2o$10bo61bo$41bobo26bobo$41b2o28b2o$42bo$36bo$
35bo39b2o$35b3o37b2o4b2o$81bobo$83bo$82bo$82b2o$80b2o2bo$79bo2b2o$80b
2o$81bo$80bo$80bobo$6b3o72b2o4b2o$8bo78b2o$7bo$bo$b2o88b2o$obo88bobo$
33bo57bo$32b2o$32bobo5$38b3o$38bo$39bo!

x = 0, y = 0, rule = B3/S23
12bo32bobo$13b2o30b2o$12b2o32bo$38bo$37bo$37b3o2$4bo$5b2o$4b2o11$42b2o
$41b2o$43bo2$8b3o$10bo$9bo$bo32b2o$b2o30b2o$obo32bo!

x = 0, y = 0, rule = B3/S23
30bobo$30b2o$31bo4$8bo$9b2o$8b2o$34bo63bobo$33bo64b2o$33b3o63bo2$o92bo
$b2o90bo$2o91bo4$88b2o$87bobo$86bo3b2o$86bob2o2bo$87bo2b2obo$88b2o3bo$
90bobo$90b2o4$38b2o46bo$37b2o47bo$39bo46bo2$4b3o73bo$6bo73b2o$5bo73bob
o$30b2o$29b2o$31bo4$8bo$8b2o$7bobo!