Synthesising Oscillators

[Apple Bottom]

This was actually found by Tanner Jacobi on January 12, 2016.

I do like Freywa's name for the oscillator though, so - as a proposal to the community, and given that the oscillator does not seem to have been named anything else by Tanner - how about we make it official?

[Freywa]

Do you mean the stable version or the original version with blockers that was found by Wainwright in 1990?

Speaking of names, Roseluck is of course the My Little Pony character – besides Rainbow Dash, the only truly notable one beginning with the letter R. There's another influence: a few hours before I posted the stable oscillator I was watching the Pac-12 championship game. The winner of that game (the Washington Huskies) would go to the Rose Bowl.

[mniemiec]

One of the soups for 18P2.359 suggests a 28-glider synthesis
https://catagolue.appspot.com/object/xp ... x111/b3s23

Code: Select all

x = 179, y = 80, rule = B3/S23
35bo$33boo98bo$34boo95bobo$132boo5$5bo$6boo11bo$5boo11bo$18b3o$16bo28b
oo28boo28boo28boo28boo$15boo28bobbo26bobbo26bobbo26bobbo26bobbo$15bobo
28b3o27b3o27b3o27b3o27b3o$$46b3o27b3o27b3o27b3o11bobo13b3o$45bobbo26bo
bbo26bobbo26bobbo11boo13bobbo$44bobo27bobo27bobo27bobo14bo12bobo$45bo
29bo29bo29bo11bo17bo$148boo$147boobbobo$151boo$152bo$83bo$82bo$82b3o$
79boo$78bobo96bo$80bo33boo28boo30bobo$113bobbo26bobbo27bobbo$114b3o27b
3o27b3o$boo65b3o$obo67bo17boo24b3o27b3o27b3o$bbo66bo18bobo23bobbo26bo
bbo26bobbo$28b3o57bo27boo28boo28boo$28bo$29bo11$133bobo$134boo$134bo$
130boo$15boo28boo28boo28boo22bobo3boo$15bobbo26bobbo26bobbo26bobbo22bo
3bobbo$16b3o27b3o27b3o27b3o27b3o$$16b3o27b3o27b3o27b3o27b3o$15bobbo26b
obbo26bobbo13bo12bobbo26bobbo$14bobo27bobo27bobo14bo12bobo27bobo$9bo5b
o28boo28boo15b3o10boo28boo$10boo56bo46boo28boo23bo$9boo58bo44bobbo26bo
bbo20bobo$30bobo34b3o28bo16boo28boo19bo5bobo$11bo18boo31b3o31bo68bo7bo
bo$11boo18bo33bo31b3o66bobo7bo$10bobo51bo28b3o10boo28boo30bobo5bo$32b
oo59bo11bobbo26bobbo33bobo$31boo61bo11boo28boo34bo$27bo5bo23boo10b3o
15boo28boo28boo$26bobo27bobo12bo14bobo27bobo27bobo$24bobbo26bobbo12bo
13bobbo26bobbo26bobbo$24b3o27b3o27b3o27b3o27b3o$$24b3o27b3o27b3o27b3o
27b3o$24bobbo26bobbo26bobbo26bobbo26bobbo3bo$26boo28boo28boo28boo28boo
3bobo$151boo$148bo$147boo$147bobo!

[Extrementhusiast]

I was also finally able to squeeze together two pairs of glasses ("Four eyes") from 49 gliders:

Code: Select all

RLE

I still haven't quite figured out how to make 1x3, 1x4, 2x3, 3x3, 3x4, 4x4, and larger arrays of scrubbers. These would need ways to trigger ways to ignite still-lifes into pulsars, and/or edge-shoot pulsars point-first. (I know many pulsar syntheses, but most of them are from 3 gliders, and not useful here.)

Imma do ya one better using this optometrist with a cleaning problem:

Code: Select all

x = 850, y = 66, rule = B3/S23
450bobo$450b2o$445bobo3bo$445b2o$446bo3$401bo5bo42bo91bo5bo$328b3o71bo
4bo42bo91bo4bo$400b3o4bo42bo34bobo54bo4b3o$326bo159b2o310bo$326bo76b3o
46b3o31bo57b3o170bo78bobo$326bo388b2o80b2o$407bo42bo91bo173b2o$328b3o
76bo42bo91bo74bo184bo$251bo111bo43bo42bo91bo69bo3bo50b2o132bo$252b2o
107b2o250b2ob3o47bo2bo41bo89b3o$251b2o3bo101bo3b2o248b2o48bo3bo2bo39b
2o$254b2o103b2o302b2o2b2o38bo2b2o5bo86bo$255b2o101b2o302b2o41bobo8bo
86b2o$84bo116bo504b2o8b3o84bobo$78bobob2o76bo41b2obobo44bo109bo131bo$
79b2o2b2o75bo40b2o2b2o35b3o8b2o28b3o74b2o8b3o122bo22bo87bo54bo59bo4bo
56b2ob2o3bo4bobo34b2ob2o2b2ob2o$79bo80bo45bo45b2o107b2o130b3o21bobo72b
o12bobo52bobo38b3o9b2o5bobo2bobo55bo3bo2bobo4b2o34bo3bo2bo3bo$518bo71b
obo13bo54bo41bo10b2o5bo4bo57b3o4bo5bo11bo24b3o4b3o$591b2o109bo10bo87b
2o5b2o$801bobo4bobo$bo18bo29b2o4b2o43b2o4b2o68b2o4b2o75b2o4b2o79b2o4b
2o70b2o4b2o84b2o4b2o67bo12b2o4b2o34b2o11b2o4b2o52b2o4b2o50b2o4b3o4b2o
8bo26b2o4b3o4b3o4b2o$2bo16bo30bobo2bobo43bobo2bobo68bobo2bobo75bobo2bo
bo79bobo2bobo70bobo2bobo84bobo2bobo67b2o11bobo2bobo33bo2bo10bobo2bobo
52bobo2bobo50bobo2bobobo2bobo35bobo2bobobo2bobobo2bobo$3o16b3o30bo2bo
47bo2bo72bo2bo79b4o79b2o2b4o70b2o2bo2bo2b2o80b2o2bo2bo2b2o64bobo9b2o2b
o2bo2b2o3bo27bo2bo8b2o2bo2bo2b2o3bo40bo3b2o2bo2bo2b2o3bo46bo2b2ob2o2bo
2b2o3bo31bo2b2ob2o2b2ob2o2bo$4b3o8b3o32bobo2bobo43bobo2bobo68bobo2bobo
75bobo2bobo77bo3bo2bobo68bo3bo2bo3bo80bo3bo2bo3bo76bo3bo2bo3bo2bobo27b
2o9bo3bo2bo3bo2bobo38bobo2bo3bo2bo3bo2bobo43bobo2bobobo2bo3bo2bobo28bo
bo2bobobo2bobobo2bobo$6bo8bo34b2o4b2o43b2o4b2o68b2o4b2o75b2o4b2o78b3o
4b2o69b3o4b3o82b3o4b3o78b3o4b3o4bo40b3o4b3o4bo3bobo34bo4b3o4b3o4bo44b
2o4b3o4b3o4bo29b2o4b3o4b3o4b2o$5bo10bo330bo301bo27b2o$347bo301b2o27bo$
44bo18bo37b2o4b2o68b2o4b2o75b2o4b2o78b3o4b2o69b3o4b3o82b3o4b3o73bo4b3o
4b3o34bobo3bo4b3o4b3o45bo4b3o4b3o4bo45bo4b3o4b3o4b2o28b2o4b3o4b3o4b2o$
45bo16bo38bobo2bobo68bobo2bobo75bobo2bobo77bo3bo2bobo68bo3bo2bo3bo80bo
3bo2bo3bo71bobo2bo3bo2bo3bo38bobo2bo3bo2bo3bo9b2o32bobo2bo3bo2bo3bo2bo
bo43bobo2bo3bo2bobobo2bobo28bobo2bobobo2bobobo2bobo$43b3o16b3o38bo2bo
72bo2bo79b4o79b2o2b4o70b2o2bo2bo2b2o80b2o2bo2bo2b2o72bo3b2o2bo2bo2b2o
9bobo27bo3b2o2bo2bo2b2o8bo2bo32bo3b2o2bo2bo2b2o3bo45bo3b2o2bo2b2ob2o2b
o32bo2b2ob2o2b2ob2o2bo$47b3o8b3o40bobo2bobo68bobo2bobo75bobo2bobo79bob
o2bobo70bobo2bobo84bobo2bobo80bobo2bobo11b2o34bobo2bobo10bo2bo38bobo2b
obo57bobo2bobobo2bobo28bobo2bobobo2bobobo2bobo$49bo8bo42b2o4b2o68b2o4b
2o75b2o4b2o79b2o4b2o70b2o4b2o84b2o4b2o80b2o4b2o12bo34b2o4b2o11b2o39b2o
4b2o48bo8b2o4b3o4b2o28b2o4b3o4b3o4b2o$48bo10bo707bobo4bobo$625b2o107bo
10bo22b2o5b2o$523bo87bo13bobo38bo54bo4bo5b2o10bo23bo11bo5bo4b3o40b3o4b
3o$130bo24bo45bo50b2o107b2o159bobo21b3o61bobo12bo39bobo52bobo2bobo5b2o
9b3o32b2o4bobo2bo3bo38bo3bo2bo3bo$125b2o2b2o24b2o2b2o40bo40b3o8b2o28b
3o74b2o8b3o150bo22bo64bo54bo54bo4bo52bobo4bo3b2ob2o38b2ob2o2b2ob2o$
126b2obobo22bobob2o41bo50bo109bo184bo$125bo34bo568b3o8b2o30bobo$255b2o
101b2o304b2o65bo8bobo30b2o$254b2o103b2o298b2o2b2o65bo5b2o2bo32bo$251b
2o3bo101bo3b2o240b2o52bo2bo3bo71b2o$252b2o107b2o236b3ob2o53bo2bo74bo
37b3o$251bo111bo43bo42bo48bo101bo3bo53b2o115bo$328b3o76bo42bo48bo100bo
174bo$407bo42bo48bo230b2o$326bo404b2o46b2o$326bo76b3o46b3o40b3o57bo
174bo48bobo$326bo227b2o223bo$407bo42bo4b3o34b3o4bo54bobo$328b3o76bo42b
o4bo38bo4bo$407bo42bo5bo36bo5bo3$411bo$411b2o$406bo3bobo$406b2o$405bob
o!

[BobShemyakin]

One of the soups for 18P2.359 suggests a 28-glider synthesis
https://catagolue.appspot.com/object/xp ... x111/b3s23

Code: Select all

x = 179, y = 80, rule = B3/S23
35bo$33boo98bo$34boo95bobo$132boo5$5bo$6boo11bo$5boo11bo$18b3o$16bo28b
oo28boo28boo28boo28boo$15boo28bobbo26bobbo26bobbo26bobbo26bobbo$15bobo
28b3o27b3o27b3o27b3o27b3o$$46b3o27b3o27b3o27b3o11bobo13b3o$45bobbo26bo
bbo26bobbo26bobbo11boo13bobbo$44bobo27bobo27bobo27bobo14bo12bobo$45bo
29bo29bo29bo11bo17bo$148boo$147boobbobo$151boo$152bo$83bo$82bo$82b3o$
79boo$78bobo96bo$80bo33boo28boo30bobo$113bobbo26bobbo27bobbo$114b3o27b
3o27b3o$boo65b3o$obo67bo17boo24b3o27b3o27b3o$bbo66bo18bobo23bobbo26bo
bbo26bobbo$28b3o57bo27boo28boo28boo$28bo$29bo11$133bobo$134boo$134bo$
130boo$15boo28boo28boo28boo22bobo3boo$15bobbo26bobbo26bobbo26bobbo22bo
3bobbo$16b3o27b3o27b3o27b3o27b3o$$16b3o27b3o27b3o27b3o27b3o$15bobbo26b
obbo26bobbo13bo12bobbo26bobbo$14bobo27bobo27bobo14bo12bobo27bobo$9bo5b
o28boo28boo15b3o10boo28boo$10boo56bo46boo28boo23bo$9boo58bo44bobbo26bo
bbo20bobo$30bobo34b3o28bo16boo28boo19bo5bobo$11bo18boo31b3o31bo68bo7bo
bo$11boo18bo33bo31b3o66bobo7bo$10bobo51bo28b3o10boo28boo30bobo5bo$32b
oo59bo11bobbo26bobbo33bobo$31boo61bo11boo28boo34bo$27bo5bo23boo10b3o
15boo28boo28boo$26bobo27bobo12bo14bobo27bobo27bobo$24bobbo26bobbo12bo
13bobbo26bobbo26bobbo$24b3o27b3o27b3o27b3o27b3o$$24b3o27b3o27b3o27b3o
27b3o$24bobbo26bobbo26bobbo26bobbo26bobbo3bo$26boo28boo28boo28boo28boo
3bobo$151boo$148bo$147boo$147bobo!

reduced to 24G:

Code: Select all

x = 153, y = 89, rule = B3/S23
12bo109bo$10bobo108bo$11b2o108b3o$22bo$21bo38b2o15b2o21b2o15b2o11b2o$
21b3o35bo2bo13bo2bo19bo2bo13bo2bo9bo2bo$17bobo39b3o14bobo20b3o14bobo
10b3o$18b2o57bo39bo$18bo40b3o37b3o27b3o$58bo2bo36bo2bo26bo2bo$57bobo
37bobo27bobo$9b3o45b2o38b2o28b2o$11bo$10bo5$14bo$13bo$13b3o54b2o38b2o
28b2o$69bobo37bobo27bobo$67bo2bo36bo2bo26bo2bo$6bo60b3o37b3o27b3o$5b2o
44bo39bo$5bobo42bobo14b3o20bobo14b3o27b3o$b3o45bo2bo13bo2bo19bo2bo13bo
2bo26bo2bo$3bo46b2o15b2o21b2o15b2o28b2o$2bo$12b2o71b3o$12bobo72bo$12bo
73bo24$2bo3bo$3bo2bobo100bobo$b3o2b2o102b2o$110bo$106b2o$3b2o16b2o28b
2o28b2o22bobo3b2o$2bo2bo15bo2bo26bo2bo26bo2bo22bo3bo2bo$2b3o17b3o27b3o
27b3o27b3o2$2b3o17b3o27b3o27b3o27b3o$bo2bo16bo2bo26bo2bo13bo12bo2bo26b
o2bo$obo17bobo27bobo14bo12bobo27bobo$2o18b2o28b2o15b3o10b2o28b2o$44bo
46b2o28b2o23bo$45bo44bo2bo26bo2bo20bobo$43b3o28bo16b2o28b2o19bo5bobo$
39b3o31bo68bo7bobo$41bo31b3o66bobo7bo$40bo28b3o10b2o28b2o30bobo5bo$69b
o11bo2bo26bo2bo33bobo$70bo11b2o28b2o34bo$13b2o18b2o10b3o15b2o28b2o28b
2o$12bobo17bobo12bo14bobo27bobo27bobo$10bo2bo16bo2bo12bo13bo2bo26bo2bo
26bo2bo$10b3o17b3o27b3o27b3o27b3o2$10b3o17b3o27b3o27b3o27b3o$9bo2bo17b
o2bo26bo2bo26bo2bo26bo2bo3bo$10b2o20b2o28b2o28b2o28b2o3bobo$127b2o$
124bo$7b2o2b3o109b2o$6bobo2bo111bobo$8bo3bo!

Bob Shemyakin

[praosylen]

7G synthesis of xp2_25a4owo4a52z4a521w125a4:

Code: Select all

x = 78, y = 47, rule = B3/S23
56bo$55bo$55b3o$76bo$75bo$75b3o17$41b3o$41bo$32bo9bo$30bobo2bo$31b2o2bobo$
35b2o16$b2o$obo68b3o$2bo68bo$72bo!

The only possible improvement might be finding a 3G synthesis for the two original pi's — they form from a twin hat predecessor except without deleting the opposite blinker of the TL, but the only 4G twin hat I know of has a more complex mechanism.

[AforAmpere]

The only possible improvement might be finding a 3G synthesis for the two original pi's — they form from a twin hat predecessor except without deleting the opposite blinker of the TL, but the only 4G twin hat I know of has a more complex mechanism.

I searched the database of 3G collisions, but did not find anything for the two pi's. It seems this is minimal, unless there magically is a 3G collision that does this that is not in the database.

[Hdjensofjfnen]

7G synthesis of xp2_25a4owo4a52z4a521w125a4:

Code: Select all

x = 78, y = 47, rule = B3/S23
56bo$55bo$55b3o$76bo$75bo$75b3o17$41b3o$41bo$32bo9bo$30bobo2bo$31b2o2bobo$
35b2o16$b2o$obo68b3o$2bo68bo$72bo!

The only possible improvement might be finding a 3G synthesis for the two original pi's — they form from a twin hat predecessor except without deleting the opposite blinker of the TL, but the only 4G twin hat I know of has a more complex mechanism.

A LoM can turn one of the barge ends of that to a tub end.

[mniemiec]

A LoM can turn one of the barge ends of that to a tub end.

There are a lot of ways of doing that with two gliders, and since a LOM takes two gliders to make, it's just one of them.

[Freywa]

It's pretty nice that my synthesis for 50P35 that opened this thread is now listed on the relevant LifeWiki page. Having seen the current smallest p35, the honey farm hassler, I made a 19-glider synthesis:

Code: Select all

x = 128, y = 43, rule = B3/S23
80bo$80bobo$80b2o$7bo$8bo3bo31b2o32b2o$6b3ob2o31bo2bo30bo2bo$11b2o30bo
2bo30bo2bo$44b2o32b2o$20bo$19bo49bobo$19b3o48b2o$70bo$17bo$18b2o34b2o
32b2o34b2o$17b2o34bobo31bobo25bo7bobo$20b2o32bo14bo18bo24b3o4bo3bo$20b
obo47b2o6bo33bo7bo$20bo48b2o7bobo31b2o$78b2o11bo25b2o$90bo25bo$90b3o
24b3o6b2o$104b2o4b2obo4bob2o4b2o$67b3o34b2o6b3o$69bo45bo$68bo11b2o31b
2o$79bobo7b2o27b2o$6bo74bo6b2o21bo7bo$b2ob2o31bo33bo18bo16bo3bo4b3o$ob
o2b2o29bobo31bobo33bobo7bo$2bo33b2o32b2o34b2o2$89bo$88b2o$88bobo2$46b
2o32b2o$13b2o30bo2bo30bo2bo$14b2ob3o25bo2bo30bo2bo$13bo3bo28b2o32b2o$
18bo$78b2o$77bobo$79bo!

You can't make both boats from two gliders each because one pair of gliders would careen into each other in the middle (or one glider would hit a boat). The 3G synthesis of block + honey farm was found from Goldtiger's database.

[Freywa]

After even more wrangling with the 3-glider script, chris_c's 4-glider program and glider inserters, here's a 42-glider synthesis of 26P40:

Code: Select all

x = 437, y = 71, rule = B3/S23
335bo$336bo$334b3o37bobo$374b2o$375bo4$387bobo$387b2o$388bo6$265bobo$
266b2o30bo60bo$266bo5bo24bobo58bobo$217bo53bo26bobo58bobo$215bobo53b3o
25b2o59b2o34bo$216b2o177bo$99bo119bo45b2o128b3o$100bo118bobo23b2o19b2o
6b2o28b2o59b2o26bo$98b3o118b2o23bo2bo17bo7bo2bo26bo2bo29bo27bo2bo24b2o
$102bo142b2o27b2o28b2o31b2o26b2o25bobo$101bo234b2o$101b3o21b2o27b2o30b
2o25b2o25b2o27b2o28b2o59b2o58b2o$125b2o27b2o12bo17b2o25b2o25b2o27b2o
28b2o59b2o58b2o$3o2bo163b2o30bo26bo26bo28bo29bo60bo$2bobo163b2o2bo27bo
bo24bobo24bobo26bobo27bobo58bobo$bo2b3o22b2o22b2o22b2o22b2o22b2o27b2o
16bobo11b2o12b2o11b2o12b2o11b2o12b2o13b2o12b2o14b2o12b2o45b2o12b2o42b
2o$29bo23bo23bo23bo23bo20bo7bo17b2o12bo26bo26bo28bo29bo24bobo33bo56b3o
$31bo23bo23bo23bo23bo19b2o7bo31bo26bo26bo28bo29bo23b2o35bo54b2o4b2o4b
5o$6b3o2bo18b2o22b2o3b3o2bo13b2o22b2o22b2o18b2o7b2o30b2o25b2o25b2o27b
2o28b2o23bo35b2o69bo$8bobo50bobo357bo3bo2bo3bo$7bo2b3o47bo2b3o22b2o22b
2o22b2o27b2o7b2o21b2o25b2o25b2o27b2o28b2o59b2o35bo12bo$88bo23bo23bo28b
o7b2o22bo26bo26bo28bo29bo60bo35b2o11b5o4b2o4b2o$90bo23bo23bo9b2o17bo7b
o23bo26bo26bo28bo29bo60bo33bobo24b3o$65b3o2bo18b2o22b2o22b2o8bobo16b2o
16b2o12b2o11b2o12b2o11b2o12b2o13b2o12b2o14b2o12b2o45b2o12b2o60b2o$67bo
bo79bo2b2o29bobo24bobo24bobo26bobo27bobo58bobo$66bo2b3o79b2o31bo26bo
26bo28bo29bo60bo$137b2o14bo12b2o30b2o25b2o25b2o27b2o28b2o59b2o58b2o$
112b3o22b2o27b2o30b2o25b2o25b2o27b2o28b2o59b2o58b2o$114bo281b2o$113bo
133b2o27b2o28b2o31bobo25b2o26b2o$115b3o101b2o25bo2bo25bo2bo7bo18bo2bo
31b2o24bo2bo27bo$115bo102bobo26b2o27b2o6b2o20b2o32bo26b2o$116bo103bo
64b2o49b3o$222b2o114bo$222bobo53b3o30b2o24bo34b2o$222bo57bo30bobo58bob
o$279bo5bo26bobo58bobo$284b2o27bo60bo$284bobo6$345bo$345b2o$344bobo4$
358bo$358b2o$357bobo37b3o$397bo$398bo!

Edit: Forget about it, 22 gliders:

Code: Select all

x = 119, y = 39, rule = B3/S23
54bo$55bo$53b3o$69bo$68bo8bo$68b3o5bo$76b3o$32bo$31bo29bo$31b3o27bobo$
61b2o$34b2o33bobo31b2o$34bobo32b2o32b2o$34bo35bo$bo54bo18bo$o56bo15bob
o$3o52b3o16bobo$74bo26b2o12b2o$3b2o28bo19b2o28bo17b2ob2o8bobo$3bobo25b
obo18bobo28bobo17bobo8bobo$3bo28b2o20bo28b2o18bobo8b2ob2o$22bo40bo39b
2o12b2o$20bobo11b3o24bobo16b3o$21bobo12bo25bobo15bo$21bo13bo26bo18bo$
2bo64bo$obo64b2o46b2o$b2o63bobo46b2o$75b2o$3b3o68bobo$5bo70bo$4bo$59b
3o$61bo5b3o$60bo8bo$68bo$82b3o$82bo$83bo!

[BlinkerSpawn]

After even more wrangling with the 3-glider script, chris_c's 4-glider program and glider inserters, here's a 42-glider synthesis of 26P40:

Code: Select all

rle

This should definitely have room for improvement. I await your contributions.

In 22:

Code: Select all

x = 118, y = 33, rule = B3/S23
106bo$104b2o$105b2o$95bo$96b2o$95b2o2$100bo$101b2o11bobo$100b2o12b2o$o
104bo9bo$obo102bobo$2o66bo36b2o9b2o$66b2o47b2o$b2o38bobo23b2o28b2o18bo
$obo30bo8b2o7b2o18b2o24bo6b2o5b2o$2bo2bo28b2o6bo8bo2bo8bo6b2o28bo3bo2b
o3bo$5bobo25b2o18b2o7b2o8bo26b2o5b2o6bo$5b2o30b2o23bobo29bo18b2o$38b2o
55b2o$6b2o29bo56b2o9b2o$5bobo96bobo$7bo88bo9bo$96b2o12b2o$95bobo11b2o$
111bo2$115b2o$114b2o$116bo$105b2o$106b2o$105bo!

[Sokwe]

Chris Cain found a 10-glider synthesis for Nicolay's p40 on April 11, 2016:

Code: Select all

x = 65, y = 30, rule = B3/S23
11bo$9bobo$10boo$28bo$bobo24bobo$bboo24boo$bbo$$48boo8boo$48boo7bo$bbo
57bo$obo53boobo$boo23bo29boo$26bobo$26boo$5boo$4bobo$6bo23boo23boo$30b
obo20boboo$30bo21bo$55bo7boo$53boo8boo$$30bo$3boo24boo$bbobo24bobo$4bo
$21boo$21bobo$21bo!

[Freywa]

Chris Cain found a 10-glider synthesis for Nicolay's p40 on April 11, 2016:

Code: Select all

x = 65, y = 30, rule = B3/S23
11bo$9bobo$10boo$28bo$bobo24bobo$bboo24boo$bbo$$48boo8boo$48boo7bo$bbo
57bo$obo53boobo$boo23bo29boo$26bobo$26boo$5boo$4bobo$6bo23boo23boo$30b
obo20boboo$30bo21bo$55bo7boo$53boo8boo$$30bo$3boo24boo$bbobo24bobo$4bo
$21boo$21bobo$21bo!

It definitely isn't on the wiki yet…

However, coming up with the reduced synthesis above did help me get up to speed with the components database and clock insertion.

[mniemiec]

After even more wrangling with the 3-glider script, chris_c's 4-glider program and glider inserters, here's a 42-glider synthesis of 26P40: ...

You can save two gliders by making the boats first. You can also edge-shoot the carrier. Since it normally takes 1 glider to clean up the spurious beehive and two more to add a block, it might be possible to do both simultaneously with 1 or 2 gliders, saving 4 or 2 more, respectively.

Forget about it, 22 gliders: ...

This is all moot, because chris_c found a 10 glider synthesis on 2016-04-11:

Code: Select all

x = 171, y = 109, rule = B3/S23
127bo$126bo$126b3o$124bo$63bo61bo$64boo57b3o28boo$19bobo41boo89boo$19b
oo28bo29bo29bo29bo29bo$20bo27bobo5bobo19bobo27bobo27bobo27bobo$48boo7b
oo19boo14boo12boo14boo12boo14boo12boo$18b3o36bo36bo29bo29bo$20bo39boo
bboo30bo29bo29bo$19bo41boobobo28boo28boo28boo$60bo3bo12bo3bo$bbo72bobo
boo24boo28boo28boo$bo74boobboo23bo29bo29bo$b3o80bo22bo29bo29bo$32boo
28boo19boo7boo12boo14boo12boo14boo12boo$bo29bobo27bobo19bobo5bobo27bob
o27bobo$boo29bo29bo29bo29bo29bo$obo74boo87boo$76boo58b3o27boo$78bo57bo
$137bo$133b3o$135bo$134bo13$67bo$66bo$58bo7b3o$59bo$57b3o$61bo$61bobo
34boo$61boo34bobbo$79bo18boo9bo$78bobo27bobo$78boo14boo12boo$94bo$96bo
$95boo$$105boo$105bo$107bo$62boo28boo12boo$61bobo27bobo$62bo29bo9boo$
79boo20bobbo$78bobo21boo$80bo$82b3o$82bo$73b3o7bo$75bo$74bo12$125bo$
123bobo$124boo$142bo$142bobo$57bo84boo$58boo$57boo$92boo28boo28boo8boo
$92boo28boo28boo7bo$164bo$57bo102boobo$58bo101boo$56b3o20bo12boo28boo$
60b3o15bo12bobbo12boo12bobbo12boo$62bo15b3o11boo12bobbo12boo12bobbo$
61bo20b3o22boo28boo$82bo76boo$83bo73boboo$156bo$107boo28boo20bo7boo$
107boo28boo18boo8boo$82boo$81boo$83bo33boo$116bobo$118bo$135boo$135bob
o$135bo!

[Freywa]

After even more wrangling with the 3-glider script, chris_c's 4-glider program and glider inserters, here's a 42-glider synthesis of 26P40: ...

You can save two gliders by making the boats first. You can also edge-shoot the carrier. Since it normally takes 1 glider to clean up the spurious beehive and two more to add a block, it might be possible to do both simultaneously with 1 or 2 gliders, saving 4 or 2 more, respectively.

Forget about it, 22 gliders: ...

This is all moot, because chris_c found a 10 glider synthesis on 2016-04-11:

Code: Select all

x = 171, y = 109, rule = B3/S23
127bo$126bo$126b3o$124bo$63bo61bo$64boo57b3o28boo$19bobo41boo89boo$19b
oo28bo29bo29bo29bo29bo$20bo27bobo5bobo19bobo27bobo27bobo27bobo$48boo7b
oo19boo14boo12boo14boo12boo14boo12boo$18b3o36bo36bo29bo29bo$20bo39boo
bboo30bo29bo29bo$19bo41boobobo28boo28boo28boo$60bo3bo12bo3bo$bbo72bobo
boo24boo28boo28boo$bo74boobboo23bo29bo29bo$b3o80bo22bo29bo29bo$32boo
28boo19boo7boo12boo14boo12boo14boo12boo$bo29bobo27bobo19bobo5bobo27bob
o27bobo$boo29bo29bo29bo29bo29bo$obo74boo87boo$76boo58b3o27boo$78bo57bo
$137bo$133b3o$135bo$134bo13$67bo$66bo$58bo7b3o$59bo$57b3o$61bo$61bobo
34boo$61boo34bobbo$79bo18boo9bo$78bobo27bobo$78boo14boo12boo$94bo$96bo
$95boo$$105boo$105bo$107bo$62boo28boo12boo$61bobo27bobo$62bo29bo9boo$
79boo20bobbo$78bobo21boo$80bo$82b3o$82bo$73b3o7bo$75bo$74bo12$125bo$
123bobo$124boo$142bo$142bobo$57bo84boo$58boo$57boo$92boo28boo28boo8boo
$92boo28boo28boo7bo$164bo$57bo102boobo$58bo101boo$56b3o20bo12boo28boo$
60b3o15bo12bobbo12boo12bobbo12boo$62bo15b3o11boo12bobbo12boo12bobbo$
61bo20b3o22boo28boo$82bo76boo$83bo73boboo$156bo$107boo28boo20bo7boo$
107boo28boo18boo8boo$82boo$81boo$83bo33boo$116bobo$118bo$135boo$135bob
o$135bo!

Didn't Sokwe already say this just a few minutes before your post?

[mniemiec]

Didn't Sokwe already say this just a few minutes before your post?

This is what happens when several people are both active on the same topic at the same time. You posted your first synthesis. I started adapting it to my database format, and found the optimization. When I went to add it to the database, I noticed there was always a 10 glider one. When I tried to post both, your 22-glider edit showed up. In between my noticing your edit and my posting mine, Sokwe made his comment.

[Freywa]

Didn't Sokwe already say this just a few minutes before your post?

This is what happens when several people are both active on the same topic at the same time. You posted your first synthesis. I started adapting it to my database format, and found the optimization. When I went to add it to the database, I noticed there was always a 10 glider one. When I tried to post both, your 22-glider edit showed up. In between my noticing your edit and my posting mine, Sokwe made his comment.

Wait, where is your (up-to-date) database again? The links on LifeWiki apparently refer to the one which you stopped updating in 2015.

[mniemiec]

Wait, where is your (up-to-date) database again? The links on LifeWiki apparently refer to the one which you stopped updating in 2015.

I haven't updated the online one yet, but I have been continuously updating my local copy, and have made many improvements and additions, and added many syntheses that have been posted here. Hopefully, I'll have it in a state ready for publication some time this year (and I intend to keep it in a maintainable state, so updates won't be so sporadic - before the 2015 version, the previous version was in 1999!)

[Freywa]

That Chris Cain's 24P10 synthesis had to be brought up made me do quite a lot. Several syntheses are not mentioned on LifeWiki, perhaps because they were made before recording such syntheses became common. Furthermore, apgsearch has led to drastic improvements in many, many syntheses (look at X66 for an example: 166 gliders to 13).

The attachment to this post contains all syntheses of oscillators with LifeWiki pages in this thread before the start of 2014 that are not on LifeWiki and which have not been superseded by later substantial improvements. However, because incremental improvements can take time, I've only zipped up the most efficient complete synthesis of the objects chosen. A view to finding any further improvements and then creating the relevant synthesis files on LifeWiki is taken.

As can be opined from the year, there is a real rabbit hole which I have only just gazed into. I strongly encourage you to continue where I left off.

[Bullet51]

Code: Select all

x = 16, y = 15, rule = B3/S23
2ob2o$2obo9bo$3bo4b2o2bobo$3b2o3b2o3bo$b2o2bo$o2b3o6b3o$b2o5bo2bo3bo$
3bo3bobobo3bo$b2o5bo2bo3bo$o2b3o6b3o$b2o2bo$3b2o3b2o3bo$3bo4b2o2bobo$
2obo9bo$2ob2o!

[dvgrn]

The attachment to this post contains all syntheses of oscillators with LifeWiki pages in this thread before the start of 2014 that are not on LifeWiki and which have not been superseded by later substantial improvements. However, because incremental improvements can take time, I've only zipped up the most efficient complete synthesis of the objects chosen. A view to finding any further improvements and then creating the relevant synthesis files on LifeWiki is taken.

Thanks for doing this. I've uploaded the two p37s manually to the LifeWiki, but the process is fairly time-consuming so I won't continue immediately. Maybe the rest could be done via the auto-upload script.

The 44-glider synthesis for Beluchenko's other p37 was actually improved to 40 gliders a few posts down, so I've manually added that synthesis and an extra link to the _synth file.

It looks like the comments are pretty good on all the attached files already, so they can be added as they are to the RLE namespace, and the auto-upload script will take care of (almost) everything from there. I've added the synth pattern for 56p27 as an example. Basically the idea is just to type "RLE:56p27_synth" (pname all lowercase, with "_synth" appended) into the LifeWiki search bar, create the file, and paste in the text from the attachment:

http://conwaylife.com/w/index.php?title ... ction=edit

Then it's just a matter of going to the 53P27 article and adding the following after "rle = true" in the infobox parameters:

Code: Select all

|synthesis    = 52
|synthesisRLE = true

More Stuff That Needs Doing
If anyone would like to volunteer to do the above RLE namespace edits for the remaining 21 files in the attachment, that would be great. The auto-upload script would then

• automatically create an RLE file with the correct name, 46p27_synth.rle, ready for upload;
  automatically add a #N header line to the RLE -- #N 56p27_synth.rle, in this case;
• automatically add a comment with a link to the LifeWiki article for the pattern being synthesized.
• automatically add a comment with a link to where this same RLE file will be stored on the LifeWiki server.

When there are a lot of these auto-created pattern or synth files, they can be sent to Nathaniel to do a bulk upload. However, now that the auto-upload script is close to being caught up and there aren't hundreds of files to handle, it's fairly easy for any LifeWiki moderator to run quickly through a folder of a few dozen new uploadable files and drop them onto the server one by one (the only available method for non-Nathaniels).

I wrote the auto-upload script just because it ends up being enormously more time-consuming if every file has to be hand-edited, renamed, gliders counted, etc. before the upload happens. All that tedious work ends up being a task to be avoided at all costs -- which is presumably why nobody has done it in a lot of cases, and synthesis files have fallen this far behind current reality.

Room for Improvement
One downside is that adding "synthesisRLE = true" is a temporary lie: the file won't actually be there on the server until the next time the auto-upload script is run. To me it seems easier to do the editing just once when the synth pattern is added to the RLE namespace, and allow reality to lag behind the promise a little bit.

-- I do admit that that's a bit suboptimal, though. Would it be preferable if the auto-upload script created a report of all the cases where rle=true or synthesisRLE=true tags are missing from the articles, so that someone could go through and do those updates systematically later?

Currently the auto-upload system doesn't pay attention to "rle = true" or "synthesis = true" or "plaintext = true" tags -- it just checks for pattern, _synth, and .cells files on the server, and creates any missing files that it can figure out how to create using whatever is in the RLE namespace. It could easily make a list of articles that will need any of the above parameters added to them, once the auto-upload process is complete.

The system is currently conservative about uploads; it doesn't prepare a pattern or synth file for upload if there's a file already uploaded. So no files on the server will ever be automatically overwritten. This wouldn't change with the proposed adjustment to the script.

Any other suggestions, comments or complaints on the current (evolving) status quo for synthesis uploads?

TL;DR: Adding latest-and-greatest synthesis patterns to the RLE namespace -- especially with reference names, dates, URLs and glider counts in the comments -- is now a good step forward in getting the LifeWiki up to date on known syntheses. Maybe it can become a bigger step forward with the next iteration of the auto-upload script.

As discussed elsewhere, it doesn't seem to make sense at this point to use Mark Niemiec's 2015 synthesis database as a source for patterns to be uploaded to the LifeWiki. It's just a bit too likely that the newest cheapest synthesis won't be there, but it will hopefully be in the upcoming 2019 release.

[mniemiec]

(look at X66 for an example: 166 gliders to 13)

I wasn't aware there had been a 166-glider one. Do you have a reference to it? I'd be curious to see it, for historical reasons.

Attachments: synths.zip

Thanks for these!
I didn't have the improved 15-glider 21-bit hooks w/snake (my synthesis took 17 gliders).
For some reason, I didn't have 105p60; that one also doesn't seem to have a LifeWiki page.
I had syntheses but incorrect attributions for 56p60, 60p33, 66p90, 68p40, 74p30.

On 2013-10-10, Matthias reduced the base p30 prepulsar shuttle synthesis which reduces 84p47 and 204p47
http://conwaylife.com/forums/viewtopic. ... 7240#p9365
You are missing this reduced 56p27: 20 gliders by 27182818 2017-11-12
I also have an improved 132p37 from 40 gliders from 2013-05-23

Code: Select all

x = 256, y = 178, rule = B3/S23
31bobo$32boo$32bo7$bo$bbo$3o21bo42bo$25boo39bo$24boo40b3o$$44bobo107bo
$45boo105bobo$45bo107boo3$79bobo80bo$79boo76bo3bo$80bo77boob3o$157boo$
167bobo$167boo$168bo5$144bo16bo7bo57bo$142bobo17bo7bo56b3o$85bobo55boo
15b3o5b3o59bo$85boo85bo11bo44boo$86bo84bo11bo$166bo4b3o9b3o55boo$165bo
75boo$165b3o67bobo$237bo$$167bo63b3o$49bo118bo55boo5bobbo$27bo20bobo
93bo21b3o55boo5bo3bo$26bobo19boo92bobo55bo13boo19bo$27bobo6boobboo54b
oo8boo35boo54bo14boo15bo3bo$28boo6boobbobbo52boo7bo34boo57b3o29bobbo8b
oo$42boo64bo23bo6bobo89b3o9boo$104boobo25boo6bo8boo$33bo71bo26boo12bo
bbobo41bobo20boo36boo$32bobo109bobo4bo41boo59bo$32bobo20bo89boo47bo21b
o4b3o28bobo$33bo20bobo126bo36bo3bo27boo$54bobo73bo52bobo8boo23bo5bo13b
3ob3o$55bo47bo24bobo9boo41boo9bobo22bo5bo13bo5bo$101boboo24boo8bobo52b
o24b3ob3o13bo5bo$45boo53bo40bo69boo27bo3bo$45bobbobboo6boo42bo7boo17bo
47boo30bobo28b3o4bo$47boobboo6bobo39boo8boo17boo41bo4bobo29bo$39boo19b
obo66bobo41bobobbo12boo16boo36boo$38bobo20bo111boo8bo6boo$39bo143bobo
6bo27boo9b3o$123b3o57boo35boo8bobbo$125bo54boo47bo3bo15boo$124bo55bobo
46bo19boo$156b3o21bo48bo3bo5boo$156bo73bobbo5boo$157bo73b3o$bbo$bboo
223bo$bobo153b3o67bobo$159bo62boo$139b3o9b3o4bo63boo$141bo11bo$140bo
11bo81boo$154b3o5b3o15boo52bo$154bo7bo17bobo52b3o$155bo7bo16bo56bo4$8b
o$8boo146bo$7bobo146boo$155bobo$166boo$43bo117b3oboo$42boo119bo3bo$42b
obo117bo$$20b3o40boo$22bo39boo106boo$21bo42bo21b3o81bobo$86bo83bo$87bo
7$56bo$55boo$55bobo18$78bobo$78boo$79bo$$40bo36bo26bobo$41boo26bobo6bo
25boo$40boo28boo4b3o26bo$70bo5$100bo$98boo9bo$99boo8bobo$bo107boo$bbo$
3o$4bo$3bo$3b3o17boo48boo58boo$23boo48boo58boo$125b3o12b3o$120bo26bo$
86bobo4bo25bobo4bobo10bobo4bobo$87boo4bobo24bo8boo6boo8bo$87bo5boo33bo
10bo4$53boo5bo67bo10bo$52bobo4boo59bo8boo6boo8bo$54bo4bobo57bobo4bobo
10bobo4bobo$120bo26bo$125b3o12b3o$23boo48boo58boo$bb3o18boo48boo58boo$
4bo$3bo$5b3o$5bo$6bo30boo$36bobo8boo$38bo9boo$47bo5$77bo$42bo26b3o4boo
28boo$42boo25bo6bobo26boo$41bobo26bo36bo$$68bo$68boo$67bobo!

[Freywa]

On 2013-10-10, Matthias reduced the base p30 prepulsar shuttle synthesis which reduces 84p47 and 204p47

Here are those syntheses after that reduction. For 204P47 I know that kickbacks of some sort have to be used for the second 84P47 but I'm too tired right now to implement them.

Code: Select all

x = 278, y = 87, rule = B3/S23
168bobo$169b2o69bo$169bo69bo$239b3o4$232bobo$208bo23b2o$207bo25bo$207b
3o$212bo$73bo137bo$71b2o138b3o$72b2o119bo$182bo9bo$99bo83b2o7b3o$28bob
o27bo7bo30b2o83b2o$29b2o28b2o3bobo31b2o124bo$29bo28b2o5b2o109bo42bo2b
2o$177b2o13bo10bo13b2o4b2o$176b2o15b2o6b2o15b2o$192b2o8b2o$137bo$136bo
$92bobo8bo32b3o$92b2o8bo31bo$93bo8b3o30bo$133b3o61b2o51bo24bo$197b2o
51b3o20b3o$bo251bo18bo$2bo249b2o18b2o$3o$4bo250bo14bo$3bo251bo14bo$3b
3o58b2o68b2o61b2o56bo6b2o6bo$64b2o9bo11bo46b2o61b2o27b2o34b2o$76b2o8bo
39b3o12b3o45b3o12b3o19bobo$75b2o9b3o32bo26bo35bo26bo14bo22bo7b2o8b2o7b
o$120bobo4bobo10bobo4bobo33bobo4bobo10bobo4bobo35bobo8bo6bo8bobo$121bo
8b2o6b2o8bo35bo8b2o6b2o8bo37bo10bo4bo10bo$129bo10bo51bo10bo53bobo6bobo
$258bo8bo2$258bo8bo$129bo10bo51bo10bo53bobo6bobo$121bo8b2o6b2o8bo35bo
8b2o6b2o8bo37bo10bo4bo10bo$120bobo4bobo10bobo4bobo33bobo4bobo10bobo4bo
bo35bobo8bo6bo8bobo$41b3o9b2o66bo26bo20bo14bo26bo37bo7b2o8b2o7bo$43bo
8b2o72b3o12b3o23bobo19b3o12b3o$42bo11bo9b2o68b2o32b2o27b2o63b2o$2b3o
59b2o68b2o61b2o56bo6b2o6bo$4bo250bo14bo$3bo251bo14bo$5b3o$5bo246b2o18b
2o$6bo246bo18bo$197b2o51b3o20b3o$134b3o60b2o51bo24bo$25b3o8bo97bo$27bo
8b2o97bo$26bo8bobo93b3o$133bo$132bo$192b2o8b2o$176b2o15b2o6b2o15b2o$
171b2o4b2o13bo10bo13b2o$63b2o5b2o28bo71b2o2bo42bo$30b2o31bobo3b2o28b2o
70bo$31b2o30bo7bo27bobo110b2o$30bo170b3o7b2o$203bo9bo$56b2o144bo$57b2o
123b3o$56bo127bo$183bo$186b3o$162bo25bo$162b2o23bo$161bobo4$154b3o$
156bo69bo$155bo69b2o$225bobo!

Code: Select all

x = 1516, y = 88, rule = B3/S23
172bo786bo79bo$170bobo784bobo79bobo$171b2o785b2o79b2o2$58bo$56bobo$57b
2o$100bo75bo786bo71bo$98b2o77b2o785b2o67b2o$47bobo49b2o75b2o785b2o69b
2o237bo$48b2o1224bo$48bo1223b3o2$206bo786bo11bo$56bo148bo49bo736bo13bo
$57b2o146b3o45b2o737b3o9b3o$56b2o196b2o$187bobo784bobo45bobo$188b2o
785b2o45b2o267bo$188bo786bo47bo266bo$69bo892bo319bo7b3o$67bobo658bo
234bo318bobo$68b2o118bobo43bobo486bo3bo77b2o154b3o11bobo43bobo258b2o$
189b2o43b2o488b2ob3o68bobo3bo2bo168b2o43b2o$189bo45bo487b2o74b2o3bo2bo
11bo156bo45bo258bo$799bo5b2o10b2o463b2o$311bo506b2o461b2o$309bobo$182b
o55bobo69b2o678bo385bobo3bobo$135bo7bo36bobo25bo7bo21b2o42bo7bo54bo7bo
51bo7bo72bo7bo82bo7bo88bo7bo73bo7bo81bo7bo39bo7bo44bo7bo32b2o5bo7bo60b
o7bo22bo16bo7bo39bo7bo39bo7bo39bo7bo39bo7bo39bo7bo14bo9bo14bo7bo39bo7b
o39bo7bo$134bobo5bobo36b2o24bobo5bobo21bo41bobo5bobo20bo31bobo5bobo49b
obo5bobo70bobo5bobo80bobo5bobo86bobo5bobo71bobo5bobo79bobo5bobo37bobo
5bobo42bobo5bobo32b2o3bobo5bobo58bobo5bobo20bo16bobo5bobo37bobo5bobo
37bobo5bobo37bobo5bobo37bobo5bobo37bobo5bobo13bo9bo13bobo5bobo37bobo5b
obo37bobo5bobo$68bo66bo7bo64bo7bo54b2o9bo7bo9b2o10bobo19b2o9bo7bo9b2o
29b2o9bo7bo9b2o50b2o9bo7bo9b2o60b2o9bo7bo9b2o66b2o9bo7bo9b2o51b2o9bo7b
o9b2o42bobo14b2o9bo7bo9b2o28bo7bo33b2o9bo7bo9b2o28bo7bo49b2o9bo7bo9b2o
10b3o4b2o9bo7bo9b2o17b2o9bo7bo9b2o17b2o9bo7bo9b2o17b2o9bo7bo9b2o17b2o
9bo7bo9b2o17b2o9bo7bo9b2o3bo2bo3bo2bo3b2o9bo7bo9b2o17b2o9bo7bo9b2o17b
2o9bo7bo9b2o$68b2o109bo92bo27bo11b2o21bo27bo31bo27bo52bo27bo62bo27bo
68bo27bo53bo27bo43b2o16bo27bo72bo27bo9bo78bo27bo9bo9bo27bo19bo27bo19bo
27bo19bo27bo19bo27bo19bo27bo4b3o5b3o4bo27bo19bo27bo19bo27bo$67bobo107b
obo92bobo23bobo34bobo23bobo31bobo23bobo52bobo23bobo37bo24bobo23bobo68b
obo23bobo53bobo23bobo44bo16bobo23bobo72bobo23bobo10bo77bobo23bobo7bobo
9bobo23bobo19bobo23bobo9bobo7bobo23bobo19bobo23bobo19bobo23bobo19bobo
23bobo19bobo23bobo19bobo23bobo19bobo23bobo$178b2o93b2o23b2o36b2o23b2o
33b2o23b2o54b2o23b2o39bo24b2o23b2o70b2o23b2o55b2o23b2o30bo7bo24b2o23b
2o74b2o23b2o9b3o78b2o23b2o9b2o10b2o23b2o21b2o23b2o11b2o8b2o23b2o21b2o
23b2o21b2o23b2o21b2o23b2o21b2o23b2o21b2o23b2o21b2o23b2o$43bobo87bo11bo
60bo11bo234bo87b3o261bo5bo7b2o71bo11bo88bo11bo183bo$44b2o87bobo7bobo
60bobo7bobo57b3o15b3o42b3o15b3o8bo30b3o15b3o8bo22bobo26b3o15b3o8bo35bo
25b3o15b3o8bo67b3o15b3o8bo52b3o15b3o8bo23b3o5b3o5bobo18b3o15b3o8bo22bo
bo7bobo36b3o15b3o8bo22bobo7bobo52b3o15b3o8bo18b3o15b3o27b3o15b3o8bo7bo
10b3o15b3o27b3o15b3o8bo18b3o15b3o27b3o15b3o8bo9bo8b3o15b3o27b3o15b3o
27b3o15b3o$44bo53bobo32bo11bo60bo11bo94b2o52bobo57bobo22b2o54bobo34bob
o51bobo94bobo79bobo38bo48bobo21bo11bo64bobo21bo11bo80bobo93bobo6bo86bo
bo5b2o86bobo7bobo$98b2o35bobo3bobo45bobo16bobo3bobo16bobo3b2o40bo2bo3b
o2bo21bobo28bo2bo3bo2bo12b2o35bo2bo3bo2bo12b2o56bo2bo3bo2bo12b2o35b2o
29bo2bo3bo2bo12b2o72bo2bo3bo2bo12b2o57bo2bo3bo2bo12b2o65bo2bo3bo2bo12b
2o24bobo3bobo43bo2bo3bo2bo12b2o24bobo3bobo16bobo40bo2bo3bo2bo12b2o23bo
2bo3bo2bo37bo2bo3bo2bo12b2o7bo15bo2bo3bo2bo37bo2bo3bo2bo12b2o6b2o15bo
2bo3bo2bo37bo2bo3bo2bo12b2o9b2o12bo2bo3bo2bo37bo2bo3bo2bo8bo2b3obo5bob
3o2bo8bo2bo3bo2bo$99bo36bo5bo47b2o17bo5bo17b2o4bobo39bo3bobo3bo21bo30b
o3bobo3bo49bo3bobo3bo70bo3bobo3bo80bo3bobo3bo86bo3bobo3bo71bo3bobo3bo
79bo3bobo3bo39bo5bo44bo3bobo3bo39bo5bo17b2o41bo3bobo3bo37bo3bobo3bo37b
o3bobo3bo37bo3bobo3bo37bo3bobo3bo37bo3bobo3bo37bo3bobo3bo37bo3bobo3bo
37bo3bobo3bo6bo2bob2obobo3bobob2obo2bo6bo3bobo3bo$24bo96bo14bo5bo47bo
18bo5bo18bo4bo42bobo3bobo54bobo3bobo51bobo3bobo37b3o32bobo3bobo39bo42b
obo3bobo39bo7bo6bo33bobo3bobo39bo7bo25bobo3bobo39bo7bo33bobo3bobo40bo
5bo14bo30bobo3bobo40bo5bo18bo42bobo3bobo39bobo3bobo39bobo3bobo39bobo3b
obo39bobo3bobo39bobo3bobo39bobo3bobo39bobo3bobo39bobo3bobo7bo5b3obo3bo
b3o5bo7bobo3bobo$24bobo92bobo161bo5bo56bo5bo53bo5bo40bo33bo5bo40bo43bo
5bo40bo7bo6bobo32bo5bo40bo7bo26bo5bo40bo7bo34bo5bo62bobo29bo5bo110bo5b
o41bo5bo41bo5bo41bo5bo41bo5bo41bo5bo41bo5bo41bo5bo41bo5bo9bo3bo3bo5bo
3bo3bo9bo5bo$5bo18b2o22b3o69b2o32bo297bo81bo86bo3bo7bo6b2o80bo7bo73bo
7bo103b2o548bo19bo$3bobo15b2o27bo15b2o13b2o16bo23b2o6b2o13b2o6bobo40b
2o5b2o13b2o5b2o50b2o13b2o46b2o13b2o43b2o13b2o64b2o13b2o74b2o13b2o29bob
o15b2o31b2o13b2o31b2o13b2o17b2o13b2o31b2o13b2o25b2o13b2o31b2o13b2o6b2o
28b2o13b2o31b2o13b2o5b2o45b2o13b2o31b2o13b2o31b2o13b2o31b2o13b2o31b2o
13b2o31b2o13b2o31b2o13b2o31b2o13b2o31b2o13b2o7b2o13b2o7b2o13b2o$4b2o
15bobo25bo16b2o13b2o15bo23bobo6b2o13b2o6b2o41b2o5b2o13b2o5b2o50b2o13b
2o46b2o13b2o43b2o13b2o64b2o13b2o74b2o13b2o30b2o15bobo30b2o13b2o31b2o
13b2o17b2o13b2o31b2o13b2o25b2o13b2o31b2o13b2o6bobo27b2o13b2o31b2o13b2o
5b2o45b2o13b2o31b2o13b2o31b2o13b2o31b2o13b2o31b2o13b2o31b2o13b2o31b2o
13b2o31b2o13b2o31b2o13b2o7b2o13b2o7b2o13b2o$b2o18bo76b3o23bo32b2o303bo
79bo74b2o6bo7bo3bo84bo7bo73bo7bo100bo552bo19bo$obo154bobo123bo5bo56bo
5bo53bo5bo48bo25bo5bo48bo35bo5bo31bobo6bo7bo41bo5bo40bo7bo26bo5bo40bo
7bo34bo5bo94bo5bo110bo5bo41bo5bo41bo5bo41bo5bo41bo5bo41bo5bo41bo5bo41b
o5bo41bo5bo9bo3bo3bo5bo3bo3bo9bo5bo$2bo133bo5bo14bo27bo4bo18bo5bo18bo
47bobo3bobo54bobo3bobo51bobo3bobo47b3o22bobo3bobo47bo34bobo3bobo32bo6b
o7bo40bobo3bobo39bo7bo25bobo3bobo39bo7bo33bobo3bobo40bo5bo45bobo3bobo
40bo5bo18bo42bobo3bobo39bobo3bobo39bobo3bobo39bobo3bobo39bobo3bobo39bo
bo3bobo39bobo3bobo39bobo3bobo39bobo3bobo7bo5b3obo3bob3o5bo7bobo3bobo$
49bo86bo5bo40bobo4b2o17bo5bo17b2o46bo3bobo3bo52bo3bobo3bo21bo27bo3bobo
3bo70bo3bobo3bo80bo3bobo3bo86bo3bobo3bo71bo3bobo3bo79bo3bobo3bo39bo5bo
44bo3bobo3bo39bo5bo17b2o41bo3bobo3bo37bo3bobo3bo37bo3bobo3bo37bo3bobo
3bo37bo3bobo3bo37bo3bobo3bo37bo3bobo3bo37bo3bobo3bo37bo3bobo3bo6bo2bob
2obobo3bobob2obo2bo6bo3bobo3bo$49b2o84bobo3bobo40b2o3bobo16bobo3bobo
16bobo45bo2bo3bo2bo52bo2bo3bo2bo21bobo25bo2bo3bo2bo12b2o56bo2bo3bo2bo
12b2o20b2o44bo2bo3bo2bo12b2o72bo2bo3bo2bo12b2o57bo2bo3bo2bo12b2o65bo2b
o3bo2bo12b2o24bobo3bobo43bo2bo3bo2bo12b2o24bobo3bobo16bobo40bo2bo3bo2b
o12b2o23bo2bo3bo2bo37bo2bo3bo2bo12b2o7bo15bo2bo3bo2bo37bo2bo3bo2bo12b
2o6b2o15bo2bo3bo2bo37bo2bo3bo2bo12b2o9b2o12bo2bo3bo2bo37bo2bo3bo2bo8bo
2b3obo5bob3o2bo8bo2bo3bo2bo$48bobo53bo28bo11bo60bo11bo157b2o49bobo31b
2o45bobo18bobo67bobo94bobo79bobo87bobo21bo11bo64bobo21bo11bo80bobo93bo
bo6bo86bobo5b2o86bobo7bobo$103b2o28bobo7bobo60bobo7bobo57b3o15b3o42b3o
15b3o39b3o15b3o8bo32bobo16b3o15b3o8bo21bo39b3o15b3o8bo67b3o15b3o8bo52b
3o15b3o8bo23b3o5b3o26b3o15b3o8bo22bobo7bobo36b3o15b3o8bo22bobo7bobo52b
3o15b3o8bo18b3o15b3o27b3o15b3o8bo7bo10b3o15b3o27b3o15b3o8bo18b3o15b3o
27b3o15b3o8bo9bo8b3o15b3o27b3o15b3o27b3o15b3o$103bobo27bo11bo60bo11bo
242bo71b3o269bo5bo80bo11bo88bo11bo183bo$245b2o26b2o23b2o36b2o23b2o33b
2o23b2o54b2o23b2o29bo34b2o23b2o70b2o23b2o55b2o23b2o30bo7bo24b2o23b2o
74b2o23b2o9b3o78b2o23b2o9b2o10b2o23b2o21b2o23b2o11b2o8b2o23b2o21b2o23b
2o21b2o23b2o21b2o23b2o21b2o23b2o21b2o23b2o21b2o23b2o$79bobo163bobo24bo
bo23bobo34bobo23bobo31bobo23bobo52bobo23bobo29bo32bobo23bobo68bobo23bo
bo53bobo23bobo61bobo23bobo72bobo23bobo10bo77bobo23bobo7bobo9bobo23bobo
19bobo23bobo9bobo7bobo23bobo19bobo23bobo19bobo23bobo19bobo23bobo19bobo
23bobo19bobo23bobo19bobo23bobo$79b2o164bo26bo27bo34bo27bo11b2o18bo27bo
52bo27bo62bo27bo68bo27bo53bo27bo43b2o16bo27bo72bo27bo9bo78bo27bo9bo9bo
27bo19bo27bo19bo27bo19bo27bo19bo27bo19bo27bo4b3o5b3o4bo27bo19bo27bo19b
o27bo$80bo54bo7bo64bo7bo54b2o9bo7bo9b2o32b2o9bo7bo9b2o10bobo16b2o9bo7b
o9b2o50b2o9bo7bo9b2o60b2o9bo7bo9b2o66b2o9bo7bo9b2o51b2o9bo7bo9b2o37b3o
b2o16b2o9bo7bo9b2o28bo7bo33b2o9bo7bo9b2o28bo7bo49b2o9bo7bo9b2o10b3o4b
2o9bo7bo9b2o17b2o9bo7bo9b2o17b2o9bo7bo9b2o17b2o9bo7bo9b2o17b2o9bo7bo9b
2o17b2o9bo7bo9b2o3bo2bo3bo2bo3b2o9bo7bo9b2o17b2o9bo7bo9b2o17b2o9bo7bo
9b2o$134bobo5bobo40bo21bobo5bobo24b2o37bobo5bobo52bobo5bobo20bo28bobo
5bobo70bobo5bobo80bobo5bobo86bobo5bobo71bobo5bobo49bo3bo25bobo5bobo37b
obo5bobo42bobo5bobo32b2o3bobo5bobo58bobo5bobo20bo16bobo5bobo37bobo5bob
o37bobo5bobo37bobo5bobo37bobo5bobo37bobo5bobo13bo9bo13bobo5bobo37bobo
5bobo37bobo5bobo$135bo7bo41b2o21bo7bo25bobo37bo7bo54bo7bo51bo7bo72bo7b
o82bo7bo88bo7bo73bo7bo49bo31bo7bo39bo7bo44bo7bo32b2o5bo7bo60bo7bo22bo
16bo7bo39bo7bo39bo7bo39bo7bo39bo7bo39bo7bo14bo9bo14bo7bo39bo7bo39bo7bo
$184bobo55bo130b2o615bo385bobo3bobo$372bobo$374bo443b2o461b2o$799bo17b
2o463b2o$189bo45bo563b2o4b2o12bo156bo45bo258bo$189b2o43b2o562bobo5b2ob
3o164b2o43b2o$79b2o107bobo43bobo568bo3bo165bobo43bobo11b3o244b2o$79bob
o728bo224bo246bobo$79bo956bo245bo7b3o$236bo738bo47bo266bo$235b2o738b2o
45b2o267bo$235bobo736bobo45bobo$91b2o76b2o$90b2o78b2o45b3o772b3o9b3o$
92bo76bo49bo772bo13bo$218bo774bo11bo2$100bo1171b3o$99b2o1173bo$48b2o
49bobo145b2o714b2o69b2o237bo$49b2o195b2o716b2o67b2o$48bo199bo714bo71bo
$90b2o$90bobo$90bo2$252b2o704b2o79b2o$252bobo702bobo79bobo$252bo706bo
79bo!

I wasn't aware there had been a 166-glider one. Do you have a reference to it? I'd be curious to see it, for historical reasons.

x66 is now doable in 12 gliders, per this 2018 post from 2718281828:

Code: Select all

x = 64, y = 39, rule = B3/S23
48bo$49bo$47b3o4$46bobo$47b2o$47bo$56bo$56bobo4bo$56b2o3b2o$62b2o2$3bo
bo$4b2o$4bo16b2o17b2o$9bo11b2o17b2o$b2o4b2o$obo5b2o$2bo18b2o17b2o2bo$
21b2o17b2o2bobo$44b2o4$62b2o$56b2o3b2o$56bobo4bo$56bo$47bo$47b2o$46bob
o4$47b3o$49bo$48bo!

Martin Grant's original x66 synthesis can be found here. By my count it is 162 gliders (153 pure gliders, 2 LWSSs and 1 MWSS) – contrary to what LifeWiki says (166) and Martin's own count (146):

Code: Select all

x = 1145, y = 48, rule = B3/S23
510bo$510bobo$510b2o2$444bo44bo$361bo83bo44b2o$127bobo232bo80b3o43b2o$
128b2o230b3o84bo$38bobo87bo317bo57bo$39b2o26bo343bo34b3o36bo11b2o4bo$
39bo5bo22bo64bobo226bo46bobo73b2o3bo6b2o4b3o$44bo21b3o64b2o196bo31bo
22bo23b2o72bobob2o$6bo37b3o81bobo3bo53bobo141bo3bo24b3o2b2o18bobo100b
2o520bo56bo20bobo25bobo$7b2o33bo86b2o57b2o140b3ob2o29bo2bo17b2o621bobo
56bobo19b2o25b2o$6b2o32bobo86bo59bo61bobo81b2o28bo2bo3bo42bobo383bo42b
o165b2o56b2o20bo9bo7bo9bo$41b2o6bo53bobo146b2o112b2o4bobo36bo3b2o384bo
bo38bobo168bobo48bobo26bobo5b2o3b2o5bobo$49bobo30bo21b2o146bo4bo114b2o
38b2o2bo384b2o40b2o168b2o50b2o27b2o4b2o5b2o4b2o$25bo23b2o31bobo19bo56b
2o26b2o65bo154b2o94bo506bo50bo24bo3bo19bo3bo$11bo11b2o49bo7b2o22bo23bo
31bo27bo65b3o34bo3bo118bo88b2o293bo44bo59bo39bo145bo25bo$9bobo12b2o49b
2obo22bo3bo23bobo29bo27bo97b2o5b2obobo35b2ob2o26b2ob2o3bo40bo27b2o49b
2o10b2o290bobo44bobo55bobo5bo27bo5bobo13bo6b2o13b2o6bo20b2o13b2o25bo
11b2o21b3o7bo9bo7b3o$10b2o28bob2o8bobo9bob2ob2o3b2o2bobo14bob2obobo2b
3o15bob2obobo8bo15bob2obo22bob2obo11bo13bob2ob2o3b2o16bob2ob2o3b2o6b3o
13bob2ob2o3bobo4b2o2b2o25bob2ob2o3bobob2o15bob2ob2o3bobob2o3bobo26bob
2ob2o5b3o16bob2ob2o3bo40bob2ob2o3bo40bob2ob2obo17bob2ob2obo22bob2ob2ob
o26bob2ob2obo27bob2ob2obo32bob2ob2obo23bob2ob2obo19bob2ob2obo25b2o2bob
2ob2obo19b2obob2ob2obo2b2o25b2obob2ob2obob2o17b2o6b2o4b2obob2ob2obob2o
4b2o6b2o15b2o3bo2bobob2ob2obobo2bo3b2o21bobobob2ob2obobobo24bobob2ob2o
bobobo30bobob2ob2obobo$40b2obo8b2o10b2obob2o7b2o15b2obob2o21b2obob2o8b
o16b2obob2o8bo12b2obob2o9bo14b2obobobobobo6bo9b2obobobobobo6bo15b2obob
obobobo36b2obobobobobo19b2obobobobobo7b2o27b2obobobo23b2obobobo2bobo
38b2obobobo2bob2o37b2obobob2o17b2obobob2o22b2obobob2o26b2obobob2o27b2o
bobob2o32b2obobob2o23b2obobob2o19b2obobob2o29b2obobob2o19b2ob2obobob2o
29b2ob2obobob2ob2o20b2o2b2o5b2ob2obobob2ob2o5b2o2b2o17b2o4b2obob2obobo
b2obob2o4b2o22bob2obobob2obo26bob2obobob2obo32bob2obobob2obo$12b2o39bo
84b3o29bobo17bo8b3o19bobo8bobo14bobo9bo21bobo45bobo28bobo45bo30bo3b2o
45bo3bobo407bobo33bobo13b2o10bo11bo10b2o18b2o11b2o24b2o11b2o19bo10b2o
11b2o10bo$13b2o25b2obo20b2obob2o24b2obob2o21b2obob2o4b3o18b2obob2o4b2o
2b2o11b2obob2o5b3o16b2obobobobobo6b2o8b2obobobobobo22b2obobobob2o37b2o
bobobob2o20b2obobobob2o37b2obobob2o22b2obobob2o11bo30b2obobob2o42b2obo
bob2o17b3o3b3o22b3o3b3o18bo7b3o3b3o27b3o3b3o32b3o3b3o23b3o3b3o19b3o3b
3o29b3o3b3o19b2ob3o3b3o29b2ob3o3b3ob2o21bo7b4ob3o3b3ob4o7bo14bobo7b2ob
ob3o3b3obob2o7bobo18bob3o3b3obo26bob3o3b3obo20b2o10bob3o3b3obo10b2o$
12bo27bob2o20bob2obobo23bob2obobo2b3o15bob2obobo3bo20bob2obo4b2o6b2o8b
ob2obo6bo18bob2ob2o3b2o3b2o11bob2ob2o3b2o2b2o18bob2ob2o41bob2ob2o24bob
2ob2o41bob2ob2o2bo21bob2ob2o2bo10bobo28bob2ob2o2bo41bob2ob2obo17bo2bob
o2bo22bo2bobo2bo16bobo7bo2bobo2bo27bo2bobo2bo32bo2bobo2bo23bo2bobo2bo
19bo2bobo2bo25b2o2bo2bobo2bo18bobobo2bobo2bo2b2o17bo6bobobo2bobo2bobob
o6bo21bo2bobo2bobo2bobo2bo24bo7bo2bobo2bobo2bobo2bo7bo18bobobo2bobo2bo
bobo22bobobo2bobo2bobobo17bobo3b2o3bobobo2bobo2bobobo3b2o3bobo$70bo30b
o3bo23bobo3bo25bo5bo5bobo13bo6bo32bobo24b2o111b3o39b2o29b2o10b2o37b2o
68b2o3b2o24b2o3b2o18b2o9b2ob2o17bo13b2ob2o36b2ob2o27b2ob2o23b2ob2o26bo
bo4b2ob2o21bo4b2ob2o4bobo14bobo7bo4b2ob2o4bo7bobo20b2o4b2ob2o4b2o34b2o
4b2ob2o4b2o27b2o4b2ob2o4b2o22b2o4b2ob2o4b2o24b2o2b2o4b2ob2o4b2o2b2o$3o
103bo23bo31bo10bo16bo38bo139bo163bo13bo39bobo63bo146bo44bo17b2o29b2o
17b2o21b2o153bo25bo$2bo46b2o53bo56b2o26b2o179bo80b3o80b2o9b2o41b2o30bo
30b3o2b2o208b2o23b2o19bobo21bobo197bo5bo$bo47bobo52b2o149b2o105b3o86bo
81b2o2b2o3b2o2b2o40bo4b2o25b2o33bo2bo11b2o27bobo4b2o3b2o8bo16b2o3b2o
21b2o3b2o31b2o3b2o24b2o3b2o25b2o7b2o3b2o7b2o22bo7b2o3b2o7bo36b2o3b2o
37b2o3b2o32b2o3b2o38b2o3b2o27b3o3b3o$41b2o6bo53bobo150b2o106bo87bo83bo
bo3bobo16b3o29b2o6b2o16bobo33bo2bo11bobo8bo18b2o5bo3bo9bobo15bo3bo23bo
3bo33bo3bo26bo3bo25bo10bo3bo10bo30bo3bo46bo3bo39bo3bo34bo3bo34b2o4bo3b
o4b2o21bo2b2ob2o2bo$40bobo86bo59bo65bo107bo4b2o168bo3bo20bo38b2o28b2o
22b2o13bo8bo19bo6bobobo9b2o16bobobo17bo5bobobo5bo27bobobo26bobobo36bob
obo41bobobo46bobobo39bobobo34bobobo35b2o3bobobo3b2o22bob2o3b2obo$42bo
27b3o56b2o57b2o68b3o96b2o8b2o72b2o119bo22b2o14bo3b2o24bobo46b3o25b2ob
2o27b3o19bo5b3o5bo29b3o28b3o38b3o43b3o48b3o41b3o36b3o35bo6b3o6bo23bo5b
o$44b3o25bo55bobo3bo53bobo67bo96b2ob2o9bo72b2o120b3o17bobo17b2o27bo
126b3o13b3o355bo2bo3bo2bo$44bo26bo61b2o124bo95b4o16bo65bo122bo21bo10b
2o7bo29b2o79b2o21b3o25b3o33b7o24b7o34b7o39b7o44b7o37b7o32b7o38b7o29bo
3bo$39bo5bo87bobo177b3o40b2o16b2o189bo32b2o37b2o78bobo19bo2bo15b2o7bo
3bo7b2o23bo2bo2bo24bo2bo2bo34bo2bo2bo39bo2bo2bo44bo2bo2bo37bo2bo2bo32b
o2bo2bo38bo2bo2bo27bobo3bobo$39b2o272bo55b3o2bobo220bo38bo3b2o75bo21b
2o16bobo7b2ob2o7bobo355bo3bo$38bobo87bo185bo53bo2bo268bobo17b2o97bo19b
o321b2o3b2o$128b2o241bo268bo20b2o39b3o8b2o385bobo3bobo$127bobo241bo
125b3o160bo5b3o35bo7b2o25b2o361bo3bo$368bobo125bo2bo168bo34bo10bo23bob
o2b2o$499bo167bo50bo21bo2bobo$495bo3bo208b2o7b2o24bo$499bo207bobo7bobo
$496bobo210bo29b2o$739bobo15b2o21b2o$710b2o27bo18b2o19b2o$710bobo44bo
23bo$710bo!

[dvgrn]

(look at X66 for an example: 166 gliders to 13)

I wasn't aware there had been a 166-glider one. Do you have a reference to it? I'd be curious to see it, for historical reasons.

Even that information is a bit out of date; there's a 12-glider synthesis now.

Here's Extrementhusiast's original 166-glider synthesis -- except the post says it's 146 gliders. That's clearly not right, but I don't know whether 166 is the right number either -- I can only find 162 gliders in that initial incremental synthesis. Anyone want to build a continuous synthesis and make sure?

EDIT: Oops, duplicate information, please disregard. I started this message earlier in the day before Freywa's post above, then got sidetracked adding all the same information to the LifeWiki article. For some reason I don't always seem to get the "someone else has posted" notification when I submit a message, or at least I don't see it. I wonder if maybe that warning doesn't show up properly if one of those "submission was invalid" messages appears instead, when too much time has passed?