ConwayLife.com

Current synthesis:

#C [[ GRID MAXGRIDSIZE 14 THEME Catagolue ]]
#CSYNTH xp4_178cw8o0o8wc871zy0or1x1ro costs 16 gliders (true).
#CLL state-numbering golly
x = 239, y = 31, rule = B3/S23
87bo$88b2o$87b2o$189bobo$190b2o$190bo3$205b2o$138bo3b3o59bo2bo$52b
o86b2o63bo2bo9bo$51bo86b2o65b2o11b2o16bobo ...

Termite wrote: October 17th, 2026, 2:42 pmthe start has a population of 24 and a bounding box of 15 x 10.=

I reduced the initial population and the bounding box at the cost of one generation of lifetime.

The syringe weld can be cheapened by one glider by making a hook with a glider and a blinker instead of with a glider and an LWSS.
x = 1324, y = 60, rule = B3/S23
1137bo$1135b2o$1136b2o2$1096bo$1097b2o$1096b2o2$1086bobo3bo$1087b2o4b
2o42bo$1087bo4b2o41b2o$1136b2o4$1141bo$1142b2o$1141b2o$142bo ...

I did my usual (improvement, staging, and finding fast components).
x = 828, y = 503, rule = B3/S23
257bo$255b2o$256b2o6$51bo$51bobo$51b2o$362bo$360bobo$361b2o22$617bo$617b
obo$617b2o4$213bo$212bobo$212bobo$213bo$608bo$208b2o7b2o189b2o198bo$207b
o2bo5bo2bo187bo2bo197bo$208b2o7b2o161bo27b2o$381bo ...

xs24_cc0s2pb8ozbdw1 in 11G. I'm amused that the 1G "activation" step is literally in the one soup result
x = 365, y = 52, rule = B3/S23
277bo$275b2o$276b2o10$32b2o108b2o108b2o98b2o$33bo109bo109bo99bo$33bob
2o106bob2o106bob2o96bob2o$32b2o2bo105b2o2bo105b2o2bo95b2o2bo$32bo2bo106b
o2bo106bo2bo95bo3bo ...

xs30_69baab9qb96zx33 in 14G:

x = 184, y = 132, rule = B3/S23
bo$2bo$3o4$49bo$50bo$48b3o24$44bo$45bo$43b3o9$183bo$181b2o$182b2o6$175b
o$175bobo$175b2o8$168bobo$168b2o$153bo15bo$151b2o$152b2o22$143bo$143b
obo$143b2o3$112bo$110bobo$111b2o15$104bo$103bobo$102bo2bo$103b2o12$152b
2o$152bobo$152bo3 ...

And another 3G to delete half the bakery. pretty sure cheaper should exist


2g to delete the half-bakery
x = 58, y = 73, rule = B3/S23
48bo$48bobo$48b2o2$53bo$52bo$52b3o3$12bo$10bobo$11b2o26$47b3o$47bo$48b
o7$7b2o$8b2o$7bo3$48bo$47b2o$19b2o26bobo$18bobo$20bo4$55b3o$55bo$43b3o
10bo$43bo$44bo7 ...

Also, I found a couple of reactions that might yield variant still-lives (similarly to but not exactly the same as fast components). How useful do these look?
x = 66, y = 21, rule = B3/S23
3bobo5bo41bobo5bo$2bo4bo44bo4bo$bo9bo39bo9bo$8bo49bo$o6bo42bo6bo$17bo
$2bobo2b2o7bo35bobo2b2o ...

This shall be the next region. (Getting a ∏ output does not count for obvious reasons.) (It can be eaten with only eight cells.)
x = 10, y = 6, rule = B3/S23
3bo2bo$3bo2bo$3o4b3o2$bobo2bobo$bo6bo!

It collapsed on itself.
x = 18, y = 6, rule = B3/S23
7bo2bo$7bo2bo$2o2b3o4b3o2b2o$2o14b2o ...

eaten

x = 13, y = 12, rule = B3/S23
o2bo$bo2b4o$b2o4bo$2o2bo$2o4bo$ob6o$5b2o$o2b2obo2$11b2o$10bobo$10b2o!

next

x = 8, y = 6, rule = B3/S23
4bo$4bo$o2b3o$2o4bo$7bo$7bo!



I ate it.
x = 11, y = 9, rule = B3/S23
4bo$4bo$o2b3o$2o4bo$7bob2o$7bob2o2$2b2o$2b2o!
I then worried that maybe the ...

13G
x = 92, y = 103, rule = B3/S23
3bobo$4b2o$4bo$80bo$80bobo$80b2o$o$b2o$2o6bobo$9b2o$9bo2$88bo$86b2o$87b
2o51$53b2o$53bobo$2b3o48bo$4bo$3bo5$54bo$53b2o$53bobo2$63b3o$63bo$64b
o$22b3o$24bo$23bo9$90b2o$89b2o$91bo3$90bo$89b2o$89bobo$13b2o$14b2o$13b
o!



One of your gliders (the northern glider ...

However, I thought of an alternative path that might yield a cheaper method.
x = 1256, y = 71, rule = B3/S23
1203bobo$1204b2o$1204bo2$133bo1114bobo$132bo1115b2o$132b3o1114bo2$157b
o$156bo$156b3o4$18bo115bo$16b2o114b2o$17b2o114b2o$128bo$128bobo$128b2o
987bo$109b2o1005bo$109b2o802bo186bobo13b3o ...

I reduced the cost to 48 by using a fast component to add a block more efficiently.
x = 1340, y = 72, rule = B3/S23
685bo$683bobo517bobo$684b2o518b2o$742bo461bo$741bo199bobo$233bo507b3o
197b2o305bobo$232bo709bo305b2o$232b3o1014bo$1086bobo$257bo829b2o249bo$
256bo830bo249bo$256b3o740bobo335b3o ...

These are currently the only stable catalysts that are apart of an oscillator. If one is to finish one of these, an oscillator is more than likely synthesizable.
x = 115, y = 88, rule = B3/S23
8b2o16b2o3b2obo25b2o16bo27b2o2b2o$9bo16bo2bo2bob3o23b2o15bobobo2bo21b
2o3bo ...

Completed:
x = 1119, y = 39, rule = B3/S23
79bobo193bo274bo$79b2o192bobo133bo138b2o39bo172bo45bo$22bo57bo80bo101b
o10b2o44bobo86bobo13bo112bo10b2o36bobo155bo14b2o45bo$22bobo45bo88bobo
102b2o54b2o83bo3b2o14bobo111bo48b2o153b2o16b2o44b3o$22b2o44bobo89b2o101b ...

Do there exist compatible sparkers (including periods dividing 33 and sufficient clearance) to realize a repeat time=33 bumper from this reaction?
x = 35, y = 88, rule = B3/S23
16b2o$17bo$16bo$16b4o$14b2o4bo$13bo2b3obo$11bo2bobo$11b2obo2b3o$14bo$
14b2o$20b2o$20bo$21b3o$23bo$15bo$14bobo$14bo2bo ...

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 ...