ConwayLife.com

I found a signal splitter. (It can also make two minnows or two squids.)
x = 55, y = 51, rule = R2,C2,S4,6-9,B6-8,N@03ddef
35b2o$35b2o$33b3ob2o$32b4o2b2o$31bob4ob3o$30b7o3bo$30b4o2bo2b3o$28b6o
2b2ob2o$28b2o2b6ob2o$30bo4b2o2b2o$30b3o6b2o$31b2ob6o$32b7o$34bo6$45b3o
$8b3o35b3o$8b3o32bo2bob3o$8b4o36b3o ...

An attempt at the "harder one" ( xs34_mk1f8bp6o8a6z1011343 ):
x = 654, y = 36, rule = B3/S23
79bobo$79b2o297bo$22bo57bo295bobo$22bobo45bo218bo87b2o$22b2o44bobo218b
obo$59bo9b2o3bo214b2o44bo44bobo14bobo$18bo41b2o11bo260bo46b2o14b2o$16b
2o41b2o12b3o210bo47b3o44bo16bo$17b2o265b2o45bo106bo ...

Some progress on xs47_oe1e8z2fgjlmzwck542sgzw110oge21 , the catalyst from the p182 B-heptomino shuttle .
x = 277, y = 49, rule = B3/S23
26bo79bo79bo69bo$25bobo77bobo77bobo67bobo$25bobo77bobo77bobo67bobo$24b
2ob2o75b2ob2o75b2ob2o65b2ob2o$24bo79bo79bo69bo$25bob2o76bob2o76bob2o66b
ob2o ...

However, looking closely, your synthesis is invalid. Take a look at step 5:
x = 9, y = 10, rule = B3/S23
3b2o$4bo2bo$4bobobo$ob2o2bobo$2obobobo$5bo$5b2o$4b3o$4bo$5bo!


While that particular method is not valid, it turns out that that part of the synthesis can be improved. Specifically ...

Trans-Queen Bee Shuttle with eater1s
x = 24, y = 11, rule = B3/S23
22b2o$22bo$13bo6bobo$12b2o6b2o$11b2o4b2o$10b3o4b2o$11b2o4b2o$2b2o8b2o
$bobo9bo$bo$2o!
#C [[ GRID THEME BOOK ]]

Cis-Queen Bee Shuttle with eater1s
x = 24, y = 9, rule = B3/S23
13bo$12b2o$11b2o4b2o$10b3o4b2o$11b2o4b2o ...

The glider+beehive allision is used in the Silver reflector only requires seven cells.

Next:
x = 12, y = 7, rule = B3/S23
9b3o$5bo3bobo$o2b2obob4o$o2b2ob2o$o2b2obob4o$5bo3bobo$9b3o!


I got a ∏ output with the help of an unusual hook with tail catalysis.
x = 27, y = 31, rule = B3/S23
6bo$5bobo$5bobo$3b3ob2o$2bo$3b3ob2o$5bob2o6$24b3o$20bo3bobo$2b2o11bo2b
2obob4o$2bo12bo2b2ob2o ...

Almost a L106 except the herschel can't escape. Maybe a different catalyst could help?

x = 23, y = 36, rule = LifeHistory
18.A$17.A.A$17.A.A$16.2A.3A$22.A$6.A9.2A.3A$5.A.A8.2A.A$6.A$11.3D$12.
D$10.3D8$C$C.C$3C$2.C7$11.D$10.3D$12.D2$16.A$15.A.A$15.A2.A$16.2A!


EDIT: added tub to try and kill ...

It's also a spartan H-to-E - the E-to-H conduits I know about don't quite fit:
x = 29, y = 25, rule = LifeHistory
18.2A$18.2A14$C19.2E3.2A$C.C17.2E3.A.A$3C24.A$2.C24.2A4$9.3D$8.2D$9.2D
!



It also suggests a periodic H-to-E using a middleweight or half-middleweight sparker.
x = 8, y = 9, rule ...

Next:

Here's a stable Solifuge-to-rake:
x = 380, y = 748, rule = B3/S23
261b2o3bo$259b3obobobo$258bo4bobobo$258bobobobobo$253b2o4b2obobo$254bo
8bobo5b2o$254bobo7bo6b2o$255b2o3$266b2o$265bo2bo$266b2o6$258b2o$258bob
o10b2o$259b2o10bobob2o$269bobob2obo$257b4o3b2o3b2o$256bo2bo4b2o$256b2o
3bo ...

Next:

2-state is impossible, but here's a 3-state rule with all the patterns you posted:
x = 124, y = 119, rule = B468S02357_3state
71.BA6.A6.3A4.3A6.3A$46.2B6.2B5.2B6.AB.AB3.AB.BA4.A2.A3.A2.A5.A2.A$48.
B11.B2.B6.B.BA4.B.B5.A6.A8.A$45.B7.B2.B29.A6.A8.A$70.A16.A.A3.A8.A$94.
A.A5.A$31.A7.3A61.A.A ...

Next:

Printlife2 partial:
x = 12, y = 15, rule = PrintLife2
7.D2.D$2.2C2.D.FE.D$3.2C2.E$C2.C.C.F2.F$3C.2C4.E$.C.C.C$2.3C2.E$7.F2.
F$2.3C5.E$.C.C.C$3C.2C.E$C2.C.C.F2.F$3.2C5.E$2.2C2.D.EF.D$7.D2.D!



Ants destroy the sun.



x = 12, y = 11, rule = B3/S23
7b2o$7bo2bo$7bo2bo$7bo3bo$7bo$7bo ...

x = 21, y = 11, rule = B3/S23
18bo$17bobo$17bo2bo$9b3o3bobo$8bo3bo2b2o$7bo5bo$bo5bo5bo$2o5bo5bo$8bo
3bo5bo$9b3o6bo$16b3o!

Challenge: try to turn this into 2 clean gliders using only a single still life.

This technically uses a single still life but probably isn't what you were thinking of.
x ...

Is this p4 hassler of a loaf predecessor known?
x = 44, y = 44, rule = B3/S23
11bo$4bo5bob2o$3bobo4bob2o$3bobo2b2o2bo3bo$2obobobo5b2o2bo$obobob2ob2o
2bo3bo$2bobo4b2o3b6o$bob2o2b2o6bo3bo$o2b3obobo2bob3o3b2o$2o5bob2obo3bo
$3b2o2b2obobob2ob3ob2o$4obobo2b2obobobo6bo$o2bobobobo3bo4b3obo$bobo2bo ...

This seems like a very useful repository to have, so thank you very much for making it! I appreciate how you organized the converters by output and further organized the G-to-Gs by output direction 👍.
Your G-to-G at (320, 190) creates a wing (along with a glider) then deletes the wing, but that wing ...

Is this p8 stairstep hexomino-hassling reaction known?
x = 29, y = 26, rule = B3/S23
o$2o26bo$2o25b2o$2o25b2o$2o25b2o$2o25b2o$2o25b2o$bo25b2o$2o6bo18bo$2o
6b2o10bo6b2o$2o5b3o3bo5b2o6b2o$bo6b2o3b2o4b3o5b2o$2o6b2o4b2o3b2o6bo$b
o7bo5bo3b2o6b2o$2o6b2o9bo7bo$bo7bo9b2o6b2o$2o7bo9bo7bo$2o17bo7b2o$2o25b
2o ...

I found a p44 stairstep hexomino hassler. (I found the core reaction accidentally, but after finding it, I worked intentionally to derive an oscillator from it.)
x = 93, y = 53, rule = B3/S23
14bo$2b2o2b3o2bob2o5bo$2b2o2b2obobob2obobobo3b2o$4b3o6bo4bo2b2o2bo$4b
o17b2o$4bo17b3o3$9b2o$9b2o2$29b2o ...

I found an alternative predecessor of the thunderbird sequence.
x = 5, y = 6, rule = B3/S23
2bobo$bobo2$obo$b2o$bo!



Edit: My spark_search.py input happens to make an LWSS.
x = 73, y = 29, rule = LifeHistory
8.C$8.C$10.3C$16.2C$13.C2.C$4.C.C6.C$6.2C.C3.C$6.C.C5.2C$8.3C$18.A$
18.A.A$8.A9.2A$7.A ...

G-to-G:
x = 61, y = 50, rule = B3/S23
27b2o$27bo$29bo$28b2o$27bo$7bo13bo5b3o$7b3o10bobo7bo$10bo9bobo6b2o$9b
2o10bo$26b2o$2bo23bobo23b2o3b2o$obo25bo23bobobo2bo$b2o25b2o6bo17bob2o
2bo$36b3o14b2o3b2o$39bo15bobo$38b2o15bobo$56bo$b2o54b3o$2bo56bo$2bobo
$3b2o48b2o$53bo$54b3o$56bo$2o$bo$bobo$2b2o ...

I found a way to make a cis-boat on dock that is one glider more expensive than the cheapest known synthesis.
x = 47, y = 27, rule = B3/S23
44bo$44bobo$44b2o9$31bo$20bo10bobo$18bobo10b2o$19b2o6$41b3o$41bo$42bo
2$3o$2bo$bo!
Sure, maybe it would be useful in certain clearance cases, but I don't see ...

I found a p4 hassler of a blockade predecessor
x = 28, y = 52, rule = B3/S23
5b2obo10bob2o$4bobob3o6b3obobo$bo2bobo4bob2obo4bobo2bo$obobo2b2o2bob2o
bo2b2o2bobobo$bo2bo3bo2bo4bo2bo3bo2bo$4b2o7b2o7b2o$6b2obo3b2o3bob2o$4b
3obo3bo2bo3bob3o$3bo4bo10bo4bo$3bob3o3b2o2b2o3b3obo$2b2obob4o6b4obob2o ...

HFx117W(190) : x = 42, y = 40, rule = LifeHistory
22.A$22.3A10.A$25.A7.3A$24.2A6.A$24.5B3.2A$26.8B$24.8B$21.12B$21.12B
7.A$21.12B5.3A$23.11B3.A$12.2A9.BA11B.2A$10.A2.A8.BABA13B$8.4A10.BABA
11B$7.A4.4A6.2BA13B$8.3A.A2.A3.B2.16B$10.A.AB4.3B.13B2.B2A$11.AB2.B2.
17B2.BA.A$12.19B.2B6.A$11.20B9.2A$12.20B ...

"sparkless p12"; has occurred twice in H4_x4 soups in the last few days

x = 16, y = 16, rule = B3/S23
6bo5b3o$5bobo4b2obo$3b2o9b2o$2bob2o2b2o4b2o$2b2o2b2o2bo$bobo4b2obo$o3bo5bobo$
bo2bo5bobo$3bobo5bo2bo$3bobo5bo3bo$4bob2o4bobo$5bo2b2o2b2o$2o4b2o2b2obo$2o9b
2o$ob2o4bobo$b3o5bo!


It's ...

Another variant:
x = 12, y = 12, rule = B3/S23
6b2o$7bo2b2o$7bobobo$4b2obo2bo$2o2bo2bo$2o3b2o2$5bo$4b3o$3b2o2bo$7b2o
$6b2o!

Here is a comparison with other replacement catalysts for when a block fails in the same way or similar ways (including a higher-clearance variant (using a long hook with ...

I almost found a way to restore the three-quarters traffic light in an odd traffic stop.