Small Spaceship Syntheses

[dvgrn]

This gives me the idea that you could rebuild a crotchet from behind using a large swarm of upward moving spaceships.
...
I think it would be interesting to see this work, but I'm not going to try building it.

Would you be equally interested in a classic pseudo-Heisenburp for crotchets, along the same lines as Goldtiger997's Amazing 2 in 1 Reusable Multipurpose Minstrel Remover and Detector™?

Code: Select all

x = 28, y = 26, rule = LifeHistory
11.C$10.C2B$9.B3C$8.4B$6.5B$6.BD2B$6.DBDB$2A4.2D3B$2A4.5B$5.5B$4.4B$
3.2C2B$3.B2C$3.CB4$20.A$19.4A$14.A3.A3.2A.2A$13.4A5.A2.2A$8.A3.A3.A7.
A2.A$7.4A4.A2.A$6.A3.A6.A$7.A.A2.A$11.A!

Maybe a better initial reaction can be found, but in a design along these lines, the output glider would be used to re-build the bait object (a boat in this case) and also send an MWSS forward past the remaining c/3 ship, to trigger a big shotgun that re-attaches the crotchet to the spaceship.

[AlbertArmStain]

Hey, this works:

Code: Select all

x = 54, y = 50, rule = B3/S23
53bo$51b2o$52b2o6$4bo$3bobo$5b2o$4bo$5b2o$4b3o2$3bobo$3b3o32bobo$38b2o
$3o36bo$3o$36bo$2b2o31bo$2b2o31b3o$bo$17b2o$17bo16bo$19bo13b2o$18b2o
13bobo$17bo$17bo$18b2o$16bobobo$16b2o3bo$22bo$21b2o6$23b2o13b2o$22bobo
12b2o$5b2o17bo14bo$4bobo$6bo$31bo$11b2o17b2o$10bobo17bobo8bo$12bo27b2o
$40bobo!

So does this
(Found by Goldtiger997 on Discord)

Code: Select all

x = 94, y = 74, rule = B3/S23
87bobo$87b2o$88bo6$40bo$2bo35bobo$bobo35b2o$bobo$3bo$3b2o$2bobo2$3b3o$
3b3o$38bo$3o36b2o3bo$3o35b2o2bobo$43b2o$2b2o$2b2o$bo5$42bo$42b2o$41bob
o3$41b2o$40bobo16b3o$42bo18bo$60bo11b3o$72bo$41b2o30bo$42b2o$41bo2$39b
o$39b2o$38bobo19$92bo$16b2o73b2o$17b2o72bobo$16bo62b2o$78b2o$80bo2$21b
2o$22b2o$21bo!

[muzik]

Indeed. I think the following are all of the known ships with no known synthesis up to 36 cells:

Updated to account for the many major developments since this post:

Code: Select all

x = 102, y = 206, rule = B3/S23
obobo2bobobo18bobobo2bo3bo18bobobo2bobobo18bobobo2bobobo2$4bo6bo22bo2b
o3bo22bo2bo26bo2bo2$obobo2bobobo18bobobo2bobobo18bobobo2bobobo18bobobo
2bobobo2$4bo2bo26bo6bo22bo6bo22bo2bo3bo2$obobo2bobobo18bobobo6bo18bobo
bo2bobobo18bobobo2bobobo12$11bo29bo25b3o31bo$9b3o27b3o25bo31b3o$7b2o
28b2o29bo28b2o$7bo2b2o25bo2b2o28b2o25bo2b2o$7bo3bo25bo3bo29bo25bo3bo$
8b2o28b2o25b2o31b2o$9b2o28b2o24bo2b2o29b2o$7b2o28b2o26bo3bo27b2o$7bo2b
2o25bo2b2o25bo2bo26bo2b2o$7b3o27b3o27bo2bo26b3o$34bo35bo22b2o$3bo2bo
25bo3bo22b3o29bo4bo$2bo28bo27bo9bo20bo$2bo3bo24bo4bo23bo2b6o21bo5bo$2b
4o25b5o26bo27b6o$63b2o5$41bo52b4o$39b3o52bo3bo$37b2o55bo$37bo2b2o53bo
2bo$37bo3bo57bo$38b2o55bo5bo$39b2o53bo$37b2o55bo6bo$37bo2b2o52b7o$37b
3o2$36bo57bo2bo$34bo3bo54bo3bob2o$33bo59bo3bo$33bo4bo54b2obo2bo$33b5o$
95b2o4$90b2o4b5o$88bo6bo5bo$87bo6bo$87bo13bo$87b8o$92b2o3$88b2o$87b2ob
2o$88b4o$89b2o9$37bo3bo52b2o$37bo3bo$36bobo53b2o2bo$35b3o2b2o49bo$90b
2o4b3o$38b2o51bo4b3o$38b2o51b3o$38b2o52bo6b3o$94bo4b3o$34b2obo54b2o$
33bobo2bo53b2o4b2o$32b2o3bo56bo3b2o$33bobobo62bo$34b2ob2o$37bo6$100bo$
99bobo$99bobo$99bo$98b2o$98bobo2$97b3o$97b3o$96bo$94b2o$94bobo2$93b3o$
93bobo$94bobo$93b2o2$94bo$94bobo$94bobo$95bo29$89b3o$89bo9b2o$90bo6b3o
bo$92b2o2b2o$93bo$97bo$93b2o3bo$92bobob2o$92bobo2bob2o$91bo4b2o$91b2o$
91b2o9$91b2o$90b2o$92bo$94b2o$93bo2$92bo2bo$89b2obo$88b2o4bo$90bobo2bo
$95bo$92bo2bo4b2o$93bobo3b2o$93bobo4bo$94b2o3b2o$94bo5$92b2o$91b2o$93b
o$95b2o$94bo2$93bo2bo$90b2obo$89b2o4bo$91bobo2bo$96bo$93bo2bo$94bobo2b
3o$94bobo2bo$95b2o4bo$95bo3b2o!

Again, this isn't counting the many flotillae and other interactions that aren't explicitly documented on Catagolue so far. I definitely want to see a list of these being created for convenience's sake so we can keep track of those as well.

The two B29 Wainwright tagalong not yet being synthesizable is what I find the most surprising since all three of the variants where it's followed by a single glider have been constructible for a long time now. Surely syntheses for these wouldn't be too far away?

[squareroot12621]

There are lots of ways that incoming spaceships can react with the end crotchet on a c/3 ship, to either cleanly delete it or else create something else while deleting it.

For example, here is a reaction where a LWSS coming from behind leaves a block.

Code: Select all

x = 28, y = 19
20bo$19b4o$14bo3bo3booboo$13b4o5bobboo$8bo3bo3bo7bobbo$7b4o4bobbo$6bo
3bo6bo$7bobobbo$11bo6$b3o$obbo$3bo$3bo$obo!

This gives me the idea that you could rebuild a crotchet from behind using a large swarm of upward moving spaceships.
The first one hits the block from the above reaction, and then many more spaceships push the result far ahead of the c/3 ship using reactions similar to the helix in a caterpillar. Then a final set of spaceships turns that result into the recipe for building the new crotchet just in time to meet the arriving c/3 ship.

I think it would be interesting to see this work, but I'm not going to try building it.

BCNU,
-dbell

Or you can just delete it entirely:

Code: Select all

x = 25, y = 18, rule = B3/S23
17bo$16b4o$11bo3bo3b2ob2o$10b4o5bo2b2o$5bo3bo3bo7bo2bo$4b4o4bo2bo$3bo
3bo6bo$4bobo2bo$8bo5$2bo$b3o$2obo$3o$b2o!

[GUYTU6J]

...
Maybe a better initial reaction can be found, but in a design along these lines, the output glider would be used to re-build the bait object (a boat in this case) and also send an MWSS forward past the remaining c/3 ship, to trigger a big shotgun that re-attaches the crotchet to the spaceship.

How about this beehive-based approach?

Code: Select all

x = 90, y = 108, rule = B3/S23
80bo$78b3o$77bo$77b2o2$o$b2o82b2o$2o84bo$86bob2o$74bo3b2o4b3o2bo$75b2o
b2o3bo3b2o$74b2o7b4o$69b2o15bo$68bobo12b3o$68bo13bo$67b2o14b5o$87bo$
85bo$85b2o30$15bo25b2o$15b3o22bo$17bo15b2o6b2o$17bo15b2o6$36b2o$37bo$
36bo$36b2o39$58bo$57b4o$52bo3bo3b2ob2o$51b4o5bo2b2o$46bo3bo3bo7bo2bo$
45b4o4bo2bo$44bo3bo6bo$45bobo2bo$49bo!

The two gliders would be Ee0 but I don't know how to choose a good H-to-2G in the glider-pair adjustment toolkit.

[dvgrn]

How about this beehive-based approach?... The two gliders would be Ee0 but I don't know how to choose a good H-to-2G in the glider-pair adjustment toolkit.

That's definitely much better -- it will probably have a quicker recovery time than the boat bait, even if we prioritize getting a forward MWSS launched as soon as possible (to make the bounding box of the whole pseudo-Heisenburp device a lot smaller).

Any old Ee0 H-to-2G should work. Probably the output for the southeast-traveling glider will end up on a long trombone-slide delay, to give the southwest-traveling glider time to reach the right location.

[dbell]

> Would you be equally interested in a classic pseudo-Heisenburp for crotchets

Yes, I would. I hadn't thought of that, but it is much smaller to build than my idea, and still pretty neat.

If anyone wants to build a pseudo-Heisenburp for this, I recommend that its static mechanism lies entirely on one side of the c/3 ship. That way, it would work for the whole series of crotchet ships.

BCNU,
-dbell

[dbell]

I found a simple two-piece bait for a c/3 crotchet ship which cleanly produces a glider moving away from the remaining ship. The glider could then be used to re-create the bait and also produce an upward LWSS.

Code: Select all

x = 36, y = 12
oo9bo$oo8bobo$10bobbo$11boo15bo$27b4o$22bo3bo3booboo$21b4o5bobboo$16bo
3bo3bo7bobbo$15b4o4bobbo$14bo3bo6bo$15bobobbo$19bo!

I also found this amusing reaction in which boats act like rocks on a beach to destroy most of an incoming ship.

Code: Select all

x = 64, y = 54
43boo$43bobo$44bo3$37boo$37bobo$38bo3$31boo$31bobo$32bo3$25boo$25bobo$
26bo3$19boo$19bobo$20bo3$13boo$13bobo$14bo3$7boo$7bobo46bo$8bo46b4o$
50bo3bo3booboo$49b4o5bobboo$boo41bo3bo3bo7bobbo$bobo39b4o4bobbo$bbo35b
o3bo3bo6bo$37b4o4bobbo$32bo3bo3bo6bo$31b4o4bobbo$26bo3bo3bo6bo$25b4o4b
obbo$20bo3bo3bo6bo$19b4o4bobbo$14bo3bo3bo6bo$13b4o4bobbo$8bo3bo3bo6bo$
7b4o4bobbo$bbo3bo3bo6bo$b4o4bobbo$o3bo6bo$bobobbo$5bo!

BCNU,
-dbell

[HartmutHolzwart]

Coming back to the synthesis topic: Can we add more component types?

[muzik]

Coming back to the synthesis topic: Can we add more component types?

Depends what we mean by more component types. We can already extend the "waltz" wave/"anacrusis" termination arbitrarily, change a spaceship ending with an anacrusis into either a ragged or saucer edge, and spaceships which have either a saucer or ragged other edge can be synthesised from scratched, which nets us a big happy family. So I guess a natural next target would be the following unsynthesized 36-cell spaceship:

Code: Select all

x = 22, y = 9, rule = B3/S23
13b2obo$10b2obob2ob3o$10bo2b2o6bo$9bobo3bo3b2o$7b2o$4b2ob2o$b4o2b2o$o
4bo$b2o!

To the left, we can see a "saucer" component. On the right is a currently-unnamed component that very closely resembles the rhs of the 25-cell "Flying Saucer" spaceship:

Code: Select all

x = 16, y = 5, rule = B3/S23
7b2obo$4b2obob2ob3o$b4o2b2o6bo$o4bo3bo3b2o$b2o!

Finding a way to tag this on to arbitrary spaceships just like we can for ragged and saucer would obviously be fantastic and net us yet another new branch in the many constructible families. I of course have no idea where to start on this, but I'm sure someone else here would be more than capable of coming up with a way.

[squareroot12621]

I also found this amusing reaction in which boats act like rocks on a beach to destroy most of an incoming ship.

Code: Select all

x = 64, y = 54
43boo$43bobo$44bo3$37boo$37bobo$38bo3$31boo$31bobo$32bo3$25boo$25bobo$
26bo3$19boo$19bobo$20bo3$13boo$13bobo$14bo3$7boo$7bobo46bo$8bo46b4o$
50bo3bo3booboo$49b4o5bobboo$boo41bo3bo3bo7bobbo$bobo39b4o4bobbo$bbo35b
o3bo3bo6bo$37b4o4bobbo$32bo3bo3bo6bo$31b4o4bobbo$26bo3bo3bo6bo$25b4o4b
obbo$20bo3bo3bo6bo$19b4o4bobbo$14bo3bo3bo6bo$13b4o4bobbo$8bo3bo3bo6bo$
7b4o4bobbo$bbo3bo3bo6bo$b4o4bobbo$o3bo6bo$bobobbo$5bo!

BCNU,
-dbell

Here's how to delete the rest of the spaceship:

Code: Select all

x = 31, y = 27, rule = B3/S23
9bo$9b3o$12bo7b2o$11b2o7b2o8bo$28b3o$27bo$27b2o4$7b2o$7bobo$8bo3$b2o$
bobo16bo$2bo16b4o$14bo3bo3b2ob2o$13b4o5bo2b2o$8bo3bo3bo7bo2bo$7b4o4bo
2bo$2bo3bo3bo6bo$b4o4bo2bo$o3bo6bo$bobo2bo$5bo!

[muzik]

Something I've been wondering for a while: are there any ways to knock off two lengths off of a WSS structure from the front in one blow in such a way that would permit the synthesis of the "asymmetric Canada Grey"?

Code: Select all

x = 41, y = 28, rule = B3/S23
22b3o$22bo2bo$16b3o3bo$15bo2bo3bo3bo$18bo3bo3bo$18bo3bo$18bo3bo2$16b3o
3b3o$17bo5bo$17b7o$16bo7bo$15b11o$14bo11bo$13b15o$12bo15bo$11b19o$10bo
19bo$3o6b23o6b3o$o2bo4bo23bo4bo2bo$o6b27o6bo$o3bobo11bobobo11bobo3bo$o
5b7obo11bob7o5bo$o4b2o3bobobo11bobobo3b2o4bo$bo3bo29bo3bo$5bo29bo$3b3o
29b3o$4b2o29b2o!

[wwei47]

This pseudo-heisenburp would be a lot easier if a still life interaction like this could happen.

Code: Select all

x = 26, y = 11, rule = B3/S23
2o$2o$2b2o14bo$2b2o13b4o$12bo3bo3b2ob2o$11b4o5bo2b2o$6bo3bo3bo7bo2bo$
5b4o4bo2bo$4bo3bo6bo$5bobo2bo$9bo!

[dvgrn]

This pseudo-heisenburp would be a lot easier if a still life interaction like this could happen...

There's nothing known along those lines that's a still life, right? This isn't an edge-repair edge. EDIT: Or rather, it is the edge-repair edge, but it takes two edge-repair edges working from both sides simultaneously, to delete something stable like a block.

I tried all the likely suspects, and found something entertaining, but nothing useful:

Code: Select all

x = 26, y = 18, rule = B3/S23
bo$obo$bobo$2b2o7$17b2o$17b2ob2o$11b2o4b2o2b4o$11b2ob2o4bo4bo$5b2o4bo
2b2o7b2o$5b2ob2o4b2o$4bo3b2o$8b2o!

[Goldtiger997]

Something I've been wondering for a while: are there any ways to knock off two lengths off of a WSS structure from the front in one blow in such a way that would permit the synthesis of the "asymmetric Canada Grey"?

Turning a HWSS into a LWSS from the front sounded tricky, so I tried looking for a LWSS to HWSS conversion instead. I found this (definitely improvable) 12G method:

Code: Select all

x = 50, y = 73, rule = B3/S23
2bo6bobo$obo7b2o34bo$b2o7bo35bobo$46b2o4$43bobo$43b2o$7bobo34bo$8b2o$
8bo12bo$22b2o$16bo4b2o$17b2o$5bo10b2o$6bo$4b3o17bo$24bobo$24b2o3$43bo$
42b2o$42bobo6$9b2o$8bobo$10bo5$7b2o$8b2o$7bo8$25b3o3b3o$24bo2bo3bo2bo$
27bo3bo$27bo3bo$27bo3bo2$25b3o3b3o$26bo5bo$26b7o$25bo7bo$24b11o$23bo
11bo$22b15o$21bo15bo$20b19o$19bo19bo$9b3o6b23o6b3o$9bo2bo4bo23bo4bo2bo
$9bo6b27o6bo$9bo3bobo11bobobo11bobo3bo$9bo5b7obo11bob7o5bo$9bo4b2o3bob
obo11bobobo3b2o4bo$10bo3bo29bo3bo$14bo29bo$12b3o29b3o$13b2o29b2o!

While I'm on the topic of Canada Grey, I wanted to point out that some asymmetric greyships can be synthesised using the same techniques as the symmetric ones:

Code: Select all

x = 147, y = 115, rule = B3/S23
54bo$42bobo7bobo39bobo$43b2o8b2o39b2o$43bo40bobo8bo$84b2o$38bo46bo14bo
$36bobo61bobo$37b2o7bo5bo4bo34bo7b2o$44bobo3bobo2bobo34bobo$45b2o4b2o
3b2o34b2o$38bobo57bobo$39b2o57b2o$39bo59bo$45bo47bo$46bo45bo$44b3o45b
3o2$27bo83bo$25bobo83bobo$26b2o8bo65bo8b2o$37bo63bo$29bobo3b3o63b3o3bo
bo$30b2o75b2o$30bo77bo$62bo13bo$61bobo11bobo41bo$62bo13bo42bobo$28bo
22b2o10b3ob2ob2ob3o10b2o22bo8b2o$29b2o20bobo11bobo3bobo11bobo20b2o$21b
obo4b2o22b2o14bobo14b2o22b2o4bobo$22b2o42b3ob3o42b2o$22bo42bo7bo42bo$
55bo8bobo5bobo8bo$54bobo8b2o5b2o8bobo$55b2o2b2o8bo8b2o2b2o$59bobo3b9o
3bobo38bo$20bo39bobobo9bobobo37b2o$21b2o31b2o6bob11obo6b2o32b2o4bobo$
20b2o25b2o5bobo5bo13bo5bobo5b2o31b2o$46bo2bo5bobo5b13o5bobo5bo2bo31bo$
46bobo7bobobo17bobobo7bobo$47bo3b2o5bob19obo5b2o3bo$50bo2bo4bo21bo4bo
2bo$50bobo6b21o6bobo$51bo3b2o25b2o3bo38bo$47b2o5bob27obo5b2o32b2o$39b
2o5bo2bo4bo29bo4bo2bo5b2o25b2o$8bo29bo2bo4bobo6b29o6bobo4bo2bo$9b2o27b
obo6bo3b2o33b2o3bo6bobo$8b2o29bo3b2o5bob35obo5b2o3bo$13bo28bo2bo4bo37b
o4bo2bo$14b2o26bobo6b37o6bobo$13b2o28bo3b2o41b2o3bo$46bob43obo5b2o$46b
o45bo4bo2bo5b2o$47b45o6bobo4bo2bo29bo$44bo12bo36b2o3bo6bobo27b2o$37b2o
5b6ob4o5b4ob30obo5b2o3bo29b2o$36bo2bo9bobo3bo3bo3bobo30bo4bo2bo28bo$
36bo2bo3bob2o3bo3bo5bo3bo3b4ob23o6bobo26b2o$37b2o4b2o2bo5bo7bo5bo3bobo
24b2o3bo28b2o$46bo6b2o5b2o6bo3bo3b4ob18obo$43b3o23bo5bo3bobo18bo$17b3o
23bo6b2o11b2o3b2o6bo3bo3b4ob11o$19bo19bo4b2o5bo11bo13bo5bo3bobo12bo$
18bo19bobo4bo5bobo7bobo7b2o3b2o6bo3bo3b4ob6o5b2o$38bobo3bo7b2o7b2o8bo
13bo5bo3bobo9bo2bo$39bo4b2o23bobo7b2o3b2o6bo3bo3b2obo3bo2bo$69b2o8bo
13bo5bo2b2o4b2o$77bobo7b2o3b2o6bo$37b2o38b2o8bo13b3o$36bo2bo27b2o16bob
o7b2o6bo23b3o$37bobo26bo2bo15b2o8bo5b2o4bo19bo$38bo27bo2bo5b2o16bobo5b
o4bobo19bo$51b3o13b2o5bo2bo15b2o7bo3bobo$53bo20bo2bo5b2o16b2o4bo$3o49b
o3b2o17b2o5bo2bo$2bo53bobo23bo2bo5b2o$bo54bo26b2o5bo2bo14b2o$21b2o67bo
2bo13bo2bo$22b2o67b2o14bobo$21bo86bo2$32bo12b3o22b3o$32b2o13bo22bo73b
3o$31bobo12bo24bo72bo$145bo$124b2o$43bo38bo40b2o$43b2o36b2o42bo$42bobo
36bobo6bo$19b2o68b2o23bo$20b2o67bobo6bo14b2o$19bo77b2o14bobo$97bobo6bo
$105b2o$105bobo3$126b2o$125b2o$127bo3$10b2o91b2o$9bobo91bobo$11bo91bo
7b2o$111bobo$111bo7b2o$119bobo$119bo7b2o$127bobo$127bo7b2o$135bobo$
135bo!

[AlbertArmStain]

Now, I wonder if max has a synthesis.

[dl-rs]

I also found this amusing reaction in which boats act like rocks on a beach to destroy most of an incoming ship.

Code: Select all

x = 64, y = 54
43boo$43bobo$44bo3$37boo$37bobo$38bo3$31boo$31bobo$32bo3$25boo$25bobo$
26bo3$19boo$19bobo$20bo3$13boo$13bobo$14bo3$7boo$7bobo46bo$8bo46b4o$
50bo3bo3booboo$49b4o5bobboo$boo41bo3bo3bo7bobbo$bobo39b4o4bobbo$bbo35b
o3bo3bo6bo$37b4o4bobbo$32bo3bo3bo6bo$31b4o4bobbo$26bo3bo3bo6bo$25b4o4b
obbo$20bo3bo3bo6bo$19b4o4bobbo$14bo3bo3bo6bo$13b4o4bobbo$8bo3bo3bo6bo$
7b4o4bobbo$bbo3bo3bo6bo$b4o4bobbo$o3bo6bo$bobobbo$5bo!

BCNU,
-dbell

Here's how to delete the rest of the spaceship:

Code: Select all

x = 31, y = 27, rule = B3/S23
9bo$9b3o$12bo7b2o$11b2o7b2o8bo$28b3o$27bo$27b2o4$7b2o$7bobo$8bo3$b2o$
bobo16bo$2bo16b4o$14bo3bo3b2ob2o$13b4o5bo2b2o$8bo3bo3bo7bo2bo$7b4o4bo
2bo$2bo3bo3bo6bo$b4o4bo2bo$o3bo6bo$bobo2bo$5bo!

Something similar:

Code: Select all

x = 24, y = 19, rule = B3/S23
2o$2o9$16bo$15b4o$10bo3bo3b2ob2o$9b4o5bo2b2o$4bo3bo3bo7bo2bo$3b4o4bo2b
o$2bo3bo6bo$3bobo2bo$7bo!

[squareroot12621]

I also found this amusing reaction in which boats act like rocks on a beach to destroy most of an incoming ship.

Code: Select all

x = 64, y = 54
43boo$43bobo$44bo3$37boo$37bobo$38bo3$31boo$31bobo$32bo3$25boo$25bobo$
26bo3$19boo$19bobo$20bo3$13boo$13bobo$14bo3$7boo$7bobo46bo$8bo46b4o$
50bo3bo3booboo$49b4o5bobboo$boo41bo3bo3bo7bobbo$bobo39b4o4bobbo$bbo35b
o3bo3bo6bo$37b4o4bobbo$32bo3bo3bo6bo$31b4o4bobbo$26bo3bo3bo6bo$25b4o4b
obbo$20bo3bo3bo6bo$19b4o4bobbo$14bo3bo3bo6bo$13b4o4bobbo$8bo3bo3bo6bo$
7b4o4bobbo$bbo3bo3bo6bo$b4o4bobbo$o3bo6bo$bobobbo$5bo!

BCNU,
-dbell

Here's how to delete the rest of the spaceship:

Code: Select all

x = 31, y = 27, rule = B3/S23
9bo$9b3o$12bo7b2o$11b2o7b2o8bo$28b3o$27bo$27b2o4$7b2o$7bobo$8bo3$b2o$
bobo16bo$2bo16b4o$14bo3bo3b2ob2o$13b4o5bo2b2o$8bo3bo3bo7bo2bo$7b4o4bo
2bo$2bo3bo3bo6bo$b4o4bo2bo$o3bo6bo$bobo2bo$5bo!

Something similar:

Code: Select all

x = 24, y = 19, rule = B3/S23
2o$2o9$16bo$15b4o$10bo3bo3b2ob2o$9b4o5bo2b2o$4bo3bo3bo7bo2bo$3b4o4bo2b
o$2bo3bo6bo$3bobo2bo$7bo!

You can also do it with gliders (albeit not from behind):

Code: Select all

x = 28, y = 25, rule = DoubleB3S23
.A12.B$2.A9.2B$3A10.2B14$20.C$19.4C$14.C3.C3.2C.2C$13.4C5.C2.2C$8.C3.
C3.C7.C2.C$7.4C4.C2.C$6.C3.C6.C$7.C.C2.C$11.C!

[Goldtiger997]

Final step for another 2c/5 ship:

Code: Select all

x = 59, y = 73, rule = B3/S23
27bo13bo$27bobo9b2o$27b2o11b2o2$11bo19bobo11bo$12b2o17b2o10b2o$11b2o
19bo11b2o3$15bo$11bo4b2o$9bobo3b2o$10b2o2$44bobo$2bo41b2o$obo42bo5bo$b
2o48bobo$51b2o5$54bo$52b2o$18bo34b2o$17bobo7bo$18bobo5bobo$19bobo4bobo
$20bobo4bo$22bo$22b2o$14b2o13b2o6bo$14b2o9b2obob3o3bobo$26bobo4bo2bobo
$23b3o2b6o3bo$22bo3b2o$23b3o2b6o3bo$26bobo4bo2bobo$14b2o9b2obob3o3bobo
$14b2o13b2o6bo$22b2o$22bo$20bobo4bo$19bobo4bobo$18bobo5bobo$17bobo7bo
29b2o$18bo37b2o$58bo6$51b2o$b2o48bobo$obo42bo5bo$2bo41b2o$44bobo2$10b
2o$9bobo3b2o$11bo4b2o$15bo3$11b2o19bo11b2o$12b2o17b2o10b2o$11bo19bobo
11bo2$27b2o11b2o$27bobo9b2o$27bo13bo!

Edit: Simpler:

Code: Select all

x = 43, y = 53, rule = B3/S23
32bo$31bo$31b3o2$9bobo$10b2o$10bo3$25bo$6bo17bo$7bo16b3o$5b3o2bobo$11b
2o22bo$11bo21b2o$obo31b2o$b2o$bo22bo$23bobo$22bob2o$22bo9bo$21b2o8b2o$
14b2o15bobo$12b3obob2o$11bo4bobo$11b6o2b3o$17b2o3bo$11b6o2b3o16bo$11bo
4bobo18bo$12b3obob2o17b3o$14b2o$21b2o$22bo$22bob2o$23bobo$bo22bo$b2o$o
bo$11bo$11b2o$5b3o2bobo22bo$7bo16b3o7b2o$6bo17bo9bobo$25bo3$10bo$10b2o
28b2o$9bobo28bobo$40bo$31b3o$31bo$32bo!

[calcyman]

Final step for another 2c/5 ship:

Code: Select all

x = 59, y = 73, rule = B3/S23
27bo13bo$27bobo9b2o$27b2o11b2o2$11bo19bobo11bo$12b2o17b2o10b2o$11b2o
19bo11b2o3$15bo$11bo4b2o$9bobo3b2o$10b2o2$44bobo$2bo41b2o$obo42bo5bo$b
2o48bobo$51b2o5$54bo$52b2o$18bo34b2o$17bobo7bo$18bobo5bobo$19bobo4bobo
$20bobo4bo$22bo$22b2o$14b2o13b2o6bo$14b2o9b2obob3o3bobo$26bobo4bo2bobo
$23b3o2b6o3bo$22bo3b2o$23b3o2b6o3bo$26bobo4bo2bobo$14b2o9b2obob3o3bobo
$14b2o13b2o6bo$22b2o$22bo$20bobo4bo$19bobo4bobo$18bobo5bobo$17bobo7bo
29b2o$18bo37b2o$58bo6$51b2o$b2o48bobo$obo42bo5bo$2bo41b2o$44bobo2$10b
2o$9bobo3b2o$11bo4b2o$15bo3$11b2o19bo11b2o$12b2o17b2o10b2o$11bo19bobo
11bo2$27b2o11b2o$27bobo9b2o$27bo13bo!

Impressive! Note that the base still-life (right) is very similar to an existing synthesised still-life in Catagolue (left), suggesting a synthesis route:

Code: Select all

x = 50, y = 9, rule = B3/S23
b2o38b2o$o2bob2o32b3obob2o$o2bobo32bo4bobo$b3o2b3o29b6o2b3o$4b2o3bo34b
2o3bo$b3o2b3o29b6o2b3o$o2bobo32bo4bobo$o2bob2o32b3obob2o$b2o38b2o!

[iNoMed]

Here's what feels like a doable seed for an intermediate still-life in the 66P5H2V0 synthesis:

Code: Select all

x = 29, y = 19, rule = B3/S23
6bo$obob2o$b2o2b2o$bo7b2o$9b2o5b2o8bo$15bo2bo7bobo$16b2o8b2o2$9b4o7bo$
8bo5bo6b2o$2o7b4o7bo$b2o$o15b2o$15bo2bo$9b2o5b2o$bo7b2o$b2o2b2o$obob2o
$6bo!

Edit: Here's how the synthesis would fit like if a seed were to be used:

Code: Select all

x = 270, y = 59, rule = B3/S23
68bobo$69b2o$20bo48bo$19bo$19b3o$259bobo$93bobo163b2o$93b2o165bo8bo$
94bo85bo60bo25b2o$17b2o162bo57bobo26b2o$17bobo159b3o58b2o$17bo69bo$87b
obo$82bo4b2o$83b2o167bobo7bo$82b2o151bobo14b2o8bobo$63bo172b2o4bo10bo
8b2o$64b2o5bo69bo94bo3bobo$63b2o4bobo68bo100b2o$70b2o68b3o89bo$6bo128b
obo92bobo20bo$obob2o130b2o47b2o44b2o19bobo$b2o2b2o129bo47bobo64bob2o$b
o7b2o173bo66bo$9b2o5b2o165b2o65b2o14bo$15bo2bo66b2o42b2o45b2o65b2o20b
2o$16b2o6bo59bo2bob2o36b3obob2o39b3obob2o15b3o41b3obob2o16bobo$23bo61b
obobo36bo4bobo39bo4bobo16bo42bo4bobo$9b4o9bo3bo59b2o2b3o33b6o2b3o36b6o
2b3o14bo41b6o2b3o$8bo5bo7b2o64b2o3bo38b2o3bo41b2o3bo61b2o3bo$2o7b4o9bo
bo2bo58b2o2b3o33b6o2b3o36b6o2b3o56b6o2b3o$b2o19b2o3bo57bobobo36bo4bobo
39bo4bobo59bo4bobo$o15b2o66bo2bob2o36b3obob2o39b3obob2o59b3obob2o$15bo
2bo66b2o42b2o45b2o65b2o$9b2o5b2o165b2o65b2o7bo$bo7b2o173bo66bo7bobo$b
2o2b2o61b2o66bo47bobo64bob2o4b2o$obob2o63b2o65b2o47b2o4bo39b2o19bobo$
6bo51b3o7bo66bobo52bo39bobo20bo$60bo79b3o47b3o39bo28b3o$59bo80bo100b2o
18bo$141bo44b3o47bo3bobo19bo$188bo47b2o4bo10bo$82b2o103bo47bobo14b2o$
83b2o167bobo$82bo4b2o$87bobo$87bo$240b2o$239bobo$94bo146bo$93b2o165bo$
93bobo163b2o$259bobo3$69bo$69b2o$68bobo!

[AlbertArmStain]

Goldtiger997 posted another c/4 diagonal final step:

Code: Select all

x = 65, y = 57, rule = B3/S23
11bo$12b2o42bobo$11b2o15bo27b2o$26bobo16bo11bo$27b2o15bo$16bo27b3o$9bo
4bobo$10b2o3b2o$9b2o41bo6bobo$50b2o7b2o$7bo43b2o7bo$5bobo$6b2o5bo$14bo
$12b3o$26b2o4b2o$26bo4bo2bo$17bo9bo3bo2bo7b3o$2bo15b2o8bo3b2o$obo14b2o
10bo$b2o27bo5bo$9bo21bo5b2o$7bobo16b2o2b2o3b2o$8b2o16b2o2bo6bo$31bo8bo
$30b2o7bobo$29bo9bobo$29bob3o6bo8b2o$30bobobo14bobo$34bo14bo$26bo7b2o
25bo2bo$24bobo33bo$25bobo32bo3bo$25bo34b4o$29b2o5bo$28bo2bo3bobo$7b2o
20b2o4bobo$6bobo12bo14bo$8bo12bo$21bo28bo$49b2o$49bobo5b2o$2b2o52b2o$b
obo54bo$3bo28b2o$32bobo18bo7b3o$12b2o18bo19b2o7bo$13b2o37bobo7bo$12bo
22b3o$21b2o12bo$20bobo13bo19b3o$5bo16bo33bo$5b2o19b3o28bo$4bobo21bo$
12bo14bo$12b2o$11bobo!

[pipsqueek]

Goldtiger997 posted another c/4 diagonal final step:

Code: Select all

x = 65, y = 57, rule = B3/S23
11bo$12b2o42bobo$11b2o15bo27b2o$26bobo16bo11bo$27b2o15bo$16bo27b3o$9bo
4bobo$10b2o3b2o$9b2o41bo6bobo$50b2o7b2o$7bo43b2o7bo$5bobo$6b2o5bo$14bo
$12b3o$26b2o4b2o$26bo4bo2bo$17bo9bo3bo2bo7b3o$2bo15b2o8bo3b2o$obo14b2o
10bo$b2o27bo5bo$9bo21bo5b2o$7bobo16b2o2b2o3b2o$8b2o16b2o2bo6bo$31bo8bo
$30b2o7bobo$29bo9bobo$29bob3o6bo8b2o$30bobobo14bobo$34bo14bo$26bo7b2o
25bo2bo$24bobo33bo$25bobo32bo3bo$25bo34b4o$29b2o5bo$28bo2bo3bobo$7b2o
20b2o4bobo$6bobo12bo14bo$8bo12bo$21bo28bo$49b2o$49bobo5b2o$2b2o52b2o$b
obo54bo$3bo28b2o$32bobo18bo7b3o$12b2o18bo19b2o7bo$13b2o37bobo7bo$12bo
22b3o$21b2o12bo$20bobo13bo19b3o$5bo16bo33bo$5b2o19b3o28bo$4bobo21bo$
12bo14bo$12b2o$11bobo!

Im no synthesis expert, but I meshed together some synthesizes from Catagolue. resulting in the following 26 glider synthesis of the base still life

Code: Select all

x = 294, y = 31, rule = B3/S23
51bobo$38bo12b2o$39b2o5bo5bo$38b2o4bobo$45b2o$209bobo$50bo159b2o$48bob
o10bo141bobo4bo$49b2o9bo92bo50b2o9bo$60b3o88bobo50bo10bobo$44bo107b2o
61b2o38bo$45bo207b3o$43b3o166b2o38bo40bo$115b2o31bo4b2o9b2o41b2o3bobo
37b2o37b3o$97bobo3bobo7bo2bo32b2o3b2o6bo2bo39bo2bo3bo33b2ob2obo37bo$
45bo52b2o4b2o7b2o33b2o3bo8b2o41b2o37bo2b2obo2bo36b2o$2bo41bobo51bo5bo
3bob2obo43bob2obo36b2ob2obo38b2o5b2o31b2ob2obo$obo40bo2bo61b2obo2bo42b
2obo2bo33bo2b2obo2bo30bo38bo6bob2obo2bo$b2o2b3o36b2o66b2o31b2o14b2o34b
2o5b2o31b2o38bo2bobo6b2o$7bo42bo95b2o3b2o83bobo3b2o31b3o2b2o$6bo43bo
94bo6b2o87b2o$50bo100bo91bo$59b3o216b2o$59bo213b2o3bobo$60bo211bobo3bo
$274bo3$64b3o$64bo$65bo!

26 gliders seems like a lot, but Im sure it can be reduced.
EDIT: so close!! just need to insert the clocks

Code: Select all

x = 801, y = 59, rule = B3/S23
427bo$426bo$426b3o318bo$748b2o42bobo$747b2o15bo27b2o$373bo388bobo16bo
11bo$51bobo319bobo331b5o51b2o15bo$38bo12b2o320b2o336bo40bo27b3o$39b2o
5bo5bo314bo343bo33bo4bobo$38b2o4bobo318bobo340b4o34b2o3b2o$45b2o319b2o
340bo36b2o41bo6bobo$209bobo205b2o367b2o7b2o$50bo159b2o204bo2bo288bo34b
o43b2o7bo$48bobo10bo141bobo4bo206b2o254bo67bobo$49b2o9bo92bo50b2o9bo
455bobo68b2o5bo$60b3o88bobo50bo10bobo100bo353b2o76bo$44bo107b2o61b2o
38bo63bo5b2o36b2o46b2o41b2o33b2o257b3o$45bo207b3o61b3o5bo37bo47bo37b2o
2bo2bo27b2o2bo2bo29b2o89b2o148b2o4b2o$43b3o166b2o38bo40bo32bo37bo47bo
36bo3bo2bo27bo3bo2bo24b2o2bo2bo39b2o42b2o2bo2bo46b2o39b2o4b2o52bo4bo2b
o$115b2o31bo4b2o9b2o41b2o3bobo37b2o37b3o33bo37bo47bo6b2o28bo3b2o29bo3b
2o25bo3bo2bo34b2o2bo2bo41bo3bo2bo41b2o2bo2bo38bo4bo2bo42bo9bo3bo2bo7b
3o$97bobo3bobo7bo2bo32b2o3b2o6bo2bo39bo2bo3bo33b2ob2obo37bo37bo37bo47b
o5bobo28bo34bo30bo3b2o35bo3bo2bo42bo3b2o42bo3bo2bo39bo3bo2bo7b3o17bo
15b2o8bo3b2o$45bo52b2o4b2o7b2o33b2o3bo8b2o41b2o37bo2b2obo2bo36b2o37bo
37bo47bo4bo31bo34bo30bo40bo3b2o44bo47bo3b2o41bo3b2o26bobo14b2o10bo$2bo
41bobo51bo5bo3bob2obo43bob2obo36b2ob2obo38b2o5b2o31b2ob2obo37b2o32b2o
2b2o42b2o2b2o37bo34bo30bo40bo49bo47bo46bo31b2o27bo5bo$obo40bo2bo61b2ob
o2bo42b2obo2bo33bo2b2obo2bo30bo38bo6bob2obo2bo36bo33b2o2bo43b2o2bo33b
2o2b2o29b2o2b2o31bo11bo28bo49bo47bo46bo5bo32bo21bo5b2o$b2o2b3o36b2o66b
2o31b2o14b2o34b2o5b2o31b2o38bo2bobo6b2o38bo37bo47bo32b2o2bo30b2o2bo27b
2o2b2o10bo30bo43b2o2b2o48bo18b3o25bo5b2o28bobo16b2o2b2o3b2o$7bo42bo95b
2o3b2o83bobo3b2o31b3o2b2o38b2o6b2o36b2o46b2o37bo34bo26b2o2bo11b3o23b2o
2b2o43b2o2bo44b2o2b2o18bo22b2o2b2o3b2o31b2o16b2o2bo6bo$6bo43bo94bo6b2o
87b2o76bobo5bo37bo47bo38b2o33b2o31bo36b2o2bo49bo8bo34b2o2bo20bo21b2o2b
o6bo53bo8bo$50bo100bo91bo77bo5bob3o33bob3o43bob3o33bo34bo32b2o41bo8bo
38b2o7bobo38bo8bo37bo8bo49b2o7bobo$59b3o216b2o48bobobo33bobobo43bobobo
32bob3o30bob3o27bo42b2o7bobo36bo9bobo37b2o7bobo35b2o7bobo47bo9bobo$59b
o213b2o3bobo51bo37bo47bo33bobobo30bobobo26bob3o37bo9bobo36bob3o6bo37bo
9bobo34bo9bobo47bob3o6bo8b2o$60bo211bobo3bo53b2o36b2o46b2o36bo34bo27bo
bobo36bob3o6bo38bobobo43bob3o6bo35bob3o6bo49bobobo14bobo$274bo181b2o6b
o26b2o30bo10b3o24bobobo48bo44bobobo42bobobo59bo14bo$463bo59b2o9bo30bo
48b2o47bo46bo51bo7b2o25bo2bo$463b3o69bo29b2o96b2o37bo7b2o48bobo33bo$
64b3o526bo106bobo58bobo32bo3bo$64bo428bo50bo49bo106bobo57bo34b4o$65bo
426bobo23b2o5bo19bo46b3o14b2o5bo84bo63b2o5bo$492bobo22bo2bo3bobo16b3o
14b2o5bo40bo2bo3bobo40b2o5bo39b2o5bo51bo2bo3bobo$483b2o8bo24b2o4bobo
32bo2bo3bobo40b2o4bobo39bo2bo3bobo37bo2bo3bobo29b2o20b2o4bobo$460b3o
19bobo40bo34b2o4bobo47bo41b2o4bobo38b2o4bobo28bobo12bo14bo$460bo23bo
82bo82bo14bo31bo14bo31bo12bo$461bo28b2o158bo46bo59bo28bo$490bobo157bo
46bo87b2o$490bo294bobo5b2o$738b2o52b2o$600b2o135bobo54bo$551b2o47bobo
136bo28b2o$551bobo46bo167bobo18bo7b3o$551bo196b2o18bo19b2o7bo$749b2o
37bobo7bo$748bo22b3o$757b2o12bo$756bobo13bo19b3o$741bo16bo33bo$741b2o
19b3o28bo$740bobo21bo$748bo14bo$748b2o$747bobo!

[mniemiec]

Goldtiger997 posted another c/4 diagonal final step: ...

Im no synthesis expert, but I meshed together some synthesizes from Catagolue. resulting in the following 26 glider synthesis of the base still life ... 26 gliders seems like a lot, but Im sure it can be reduced.
EDIT: so close!! just need to insert the clocks ...

Nice work! Here's the completed synthesis from 79 gliders
1) The first third of your synthesis is rotated 90 degrees from the rest
2) Step #3 adds a block to the snake (which is then ignored; this step can be eliminated)
3) The long^4 snake in parts 8-16 is one shorter than what was created earlier
(although it goes back to the correct length for the last two steps)
4) Clocks are generally difficult to add; those should be added BEFORE any of the other still-lifes

Code: Select all

x = 577, y = 57, rule = B3/S23
523bo$524b2o42bobo$523b2o15bo27b2o$538bobo16bo11bo$539b2o15bo$528bo27b
3o$521bo4bobo$522b2o3b2o$369bobo149b2o41bo6bobo$369b2o123bo67b2o7b2o$
120bo115bo127bo5bo124b2o22bo43b2o7bo$121b2o111bobo128b2o127b2o21bobo$
120b2o56bobo54b2o3bo123b2o132bobo17b2o5bo$125bo53b2o58bo258b2o26bo$
123b2o54bo56b2ob3o187bo69bo24b3o$124b2o109bobo60b2o13bo44b2o58b2o4bo3b
o49b2o4b2o52b2o4b2o$119bo57b2o58bo60bo12b2o45bo59bo6b2ob3o47bo4bo2bo
51bo4bo2bo$120b2o7bo48b2o60b2o57bo12b2o45bo59bo4b2o53bo3bo2bo42bo9bo3b
o2bo7b3o$119b2o4bo3bobo45bo62bo59bo59bo59bo59bo3b2o28bo15b2o8bo3b2o$
126b2ob2o50b2o58bo59bo13bo45bo6bo52bo59bo30bobo14b2o10bo$125b2o54bo60b
o59bo11b2o46bo5bo5bobo45bo5bo53bo5bo24b2o27bo5bo$183bo59bo59bo10bobo
46bo4bo5b2o42bo4bo5b2o52bo5b2o30bo21bo5b2o$77bo44b2o58b2o58b2o58b2o58b
2o11bo3bo36bobo3b2o3b2o7bo41b2o2b2o3b2o30bobo16b2o2b2o3b2o$75b2o45bo
59bo59bo59bo59bo15b2o37b2o3bo6bo5bo42b2o2bo6bo30b2o16b2o2bo6bo$76b2o
45bo59bo59bo59bo59bo14bobo33b2o7bo11b3o45bo8bo50bo8bo$122b2o58b2o58b2o
58b2o58b2o49bobo6b2o58b2o7bobo48b2o7bobo$121bo8bobo48bo59bo59bo59bo53b
o5bo10b3o46bo9bobo47bo9bobo$bobo58bo4bo53bob3o4b2o49bob3o55bob3o55bob
3o55bob3o55bob3o6bo48bob3o6bo48bob3o6bo8b2o$b2o58bobo2bo55bobo6bo50bob
obo55bobobo55bobobo55bobobo55bobobo6bo48bobobo55bobobo14bobo$2bo58bo2b
ob3o6bo50bo59bo59bo59bo41bo17bo59bo59bo59bo14bo$62b2o11bobo47b2o59b2o
58b2o58b2o38bobo17b2o50bo7b2o50bo7b2o50bo7b2o25bo2bo$o74b2o270b2o2b2o
63bobo57bobo57bobo33bo$b2o129bobo215bobo64bobo57bobo12bo44bobo32bo3bo$
2o69bo54b2o4b2o218bo4b3o57bo59bo13bo45bo34b4o$58b3o10bobo4bo46bobo5bo
347b2o8b3o47b2o5bo$71b2o4b2o48bo294b2o56bo2bo56bo2bo3bobo$77bobo49b2o
163bo127bobo56b2o5b3o28b2o20b2o4bobo$129bobo162b2o126bo65bo29bobo12bo
14bo$129bo163bobo123b2o68bo30bo12bo$298b2o118bobo112bo28bo$297b2o121bo
140b2o$299bo60b3o198bobo5b2o$360bo153b2o52b2o$56b3o297b2o3bo151bobo54b
o$58bo10b3o283bobo157bo28b2o$57bo11bo287bo186bobo18bo7b3o$70bo453b2o
18bo19b2o7bo$525b2o37bobo7bo$50b3o471bo22b3o$52bo480b2o12bo$51bo480bob
o13bo19b3o$517bo16bo33bo$517b2o19b3o28bo$516bobo21bo$524bo14bo$524b2o$
523bobo!

[AlbertArmStain]

Simplified final step:

Code: Select all

x = 64, y = 57, rule = B3/S23
10bo$11b2o36bo$10b2o37bobo$49b2o$39bo$39bobo2bo$8bo7bo22b2o3bobo$9b2o
6bo5bo20b2o$8b2o5b3o6b2o$23b2o$6bo$4bobo$5b2o5bo$13bo38bo$11b3o38bobo$
52b2o2$16bo$o16b2o7b2o$b2o13b2o8bobo23bo$2o27bo5bo14b2o$8bo21bo5b2o13b
2o$6bobo16b2o2b2o3b2o$7b2o16b2o2bo6bo$30bo8bo$29b2o7bobo$28bo9bobo$28b
ob3o6bo$29bobobo$33bo$12bo12bo7b2o14bo10bo2bo$13b2o8bobo22b2o9bo$12b2o
10bobo21bobo8bo3bo$24bo34b4o$28b2o5bo$27bo2bo3bobo$6b2o20b2o4bobo$5bob
o27bo$7bo$49bo$48b2o$48bobo5b2o$55b2o$57bo2$15b2o35bo7b3o$14bobo34b2o
7bo$16bo34bobo7bo$10b2o12b2o$9bobo13b2o$11bo12bo30b3o$55bo$56bo2$3o$2b
o$bo!

EDIT:
finished:

Code: Select all

x = 1097, y = 57, rule = B3/S23
1043bo$1044b2o36bo$1043b2o37bobo$1082b2o$1072bo$1072bobo2bo$1041bo7bo
22b2o3bobo$1042b2o6bo5bo20b2o$611bobo427b2o5b3o6b2o$611b2o443b2o$182b
o122bo300bo5bo426bo$183b2o118bobo301b2o428bobo$182b2o63bobo54b2o3bo296b
2o430b2o5bo$187bo60b2o58bo737bo38bo$185b2o61bo56b2ob3o733b3o38bobo$186b
2o116bobo76b2o13bo59b2o74b2o64b2o70b2o73b2o71b2o80b2o181b2o$181bo64b2o
58bo76bo12b2o60bo75bo65bo71bo74bo72bo81bo$182b2o7bo55b2o60b2o73bo12b2o
60bo75bo65bo71bo74bo72bo81bo145bo$181b2o4bo3bobo52bo62bo75bo74bo75bo65b
o71bo74bo72bo81bo128bo16b2o7b2o$188b2ob2o57b2o58bo75bo13bo60bo6bo68bo
6bo58bo6bo64bo74bo72bo81bo128b2o13b2o8bobo23bo$187b2o61bo60bo75bo11b2o
61bo5bo69bo5bo59bo5bo5bobo57bo5bo68bo5bo66bo5bo75bo5bo120b2o27bo5bo14b
2o$252bo59bo75bo10bobo61bo4bo70bo4bo60bo4bo5b2o54bo4bo5b2o67bo5b2o65b
o5b2o74bo5b2o126bo21bo5b2o13b2o$77bo44b2o60b2o65b2o58b2o74b2o73b2o74b
2o64b2o11bo3bo48bobo3b2o3b2o64b2o2b2o3b2o62b2o2b2o3b2o7bo63b2o2b2o3b2o
126bobo16b2o2b2o3b2o$75b2o45bo61bo66bo59bo75bo74bo75bo65bo15b2o49b2o3b
o6bo63b2o2bo6bo61b2o2bo6bo5bo64b2o2bo6bo126b2o16b2o2bo6bo$76b2o45bo61b
o66bo59bo75bo74bo75bo65bo14bobo45b2o7bo74bo72bo11b3o67bo8bo146bo8bo$122b
2o60b2o65b2o58b2o74b2o73b2o74b2o64b2o61bobo6b2o73b2o71b2o80b2o7bobo144b
2o7bobo$121bo8bobo50bo66bo59bo75bo74bo75bo65bo65bo5bo74bo72bo10b3o68b
o9bobo143bo9bobo$bobo58bo4bo53bob3o4b2o51bob3o62bob3o55bob3o71bob3o70b
ob3o71bob3o61bob3o67bob3o70bob3o68bob3o6bo70bob3o6bo144bob3o6bo$b2o58b
obo2bo55bobo6bo52bobobo62bobobo55bobobo71bobobo70bobobo71bobobo61bobo
bo67bobobo70bobobo68bobobo6bo70bobobo151bobobo$2bo58bo2bob3o6bo50bo61b
o66bo59bo75bo74bo57bo17bo65bo71bo74bo72bo81bo155bo$62b2o11bobo47b2o61b
2o65b2o58b2o74b2o73b2o54bobo17b2o56bo7b2o62bo7b2o65bo7b2o63bo7b2o72bo
7b2o133bo12bo7b2o14bo10bo2bo$o74b2o446b2o2b2o69bobo69bobo72bobo70bobo
79bobo143b2o8bobo22b2o9bo$b2o129bobo391bobo70bobo69bobo72bobo70bobo79b
obo12bo128b2o10bobo21bobo8bo3bo$2o69bo54b2o4b2o394bo4b3o63bo71bo74bo72b
o81bo13bo141bo34b4o$58b3o10bobo4bo46bobo5bo689b2o80b2o8b3o143b2o5bo$71b
2o4b2o48bo623b2o69bo2bo78bo2bo152bo2bo3bobo$77bobo49b2o323bo296bobo69b
2o80b2o5b3o124b2o20b2o4bobo$129bobo322b2o295bo160bo125bobo27bo$129bo323b
obo292b2o163bo126bo$458b2o287bobo332bo$457b2o290bo331b2o$459bo76b3o542b
obo5b2o$536bo551b2o$56b3o473b2o3bo552bo$58bo10b3o459bobo$57bo11bo463b
o514b2o35bo7b3o$70bo976bobo34b2o7bo$1049bo34bobo7bo$50b3o990b2o12b2o$
52bo989bobo13b2o$51bo992bo12bo30b3o$1088bo$1089bo2$1033b3o$1035bo$1034b
o!

EDIT2:
I'm still speculating about a max synthesis:

Code: Select all

x = 101, y = 123, rule = B3/S23
29bo$17bobo7bobo51bobo$18b2o8b2o51b2o$18bo52bobo8bo$71b2o$13bo58bo14b
o$11bobo73bobo$12b2o7bo5bo4bo46bo7b2o$19bobo3bobo2bobo46bobo$20b2o4b2o
3b2o46b2o$13bobo69bobo$14b2o69b2o$14bo71bo$20bo59bo$21bo57bo$19b3o57b
3o2$2bo95bo$obo95bobo$b2o8bo77bo8b2o$12bo75bo$4bobo3b3o75b3o3bobo$5b2o
87b2o$5bo89bo4$3bo93bo$4b2o89b2o$3b2o91b2o$43bo13bo$42bobo11bobo$43bo
13bo$32b2o10b3ob2ob2ob3o10b2o$32bobo11bobo3bobo11bobo$33b2o14bobo14b2o
$47b3ob3o$46bo7bo$36bo8bobo5bobo8bo$35bobo8b2o5b2o8bobo$36b2o2b2o8bo8b
2o2b2o$40bobo3b9o3bobo$41bobobo9bobobo$35b2o6bob11obo6b2o$28b2o5bobo5b
o13bo5bobo5b2o$27bo2bo5bobo5b13o5bobo5bo2bo$27bobo7bobobo17bobobo7bob
o$28bo3b2o5bob19obo5b2o3bo$31bo2bo4bo21bo4bo2bo$31bobo6b21o6bobo$32bo
3b2o25b2o3bo$28b2o5bob27obo5b2o$27bo2bo4bo29bo4bo2bo$27bobo6b29o6bobo
$28bo3b2o33b2o3bo$31bob35obo$31bo37bo$32b37o$29bo41bo$29b43o2$23b2o2b
47o2b2o$23bo2bo47bo2bo$25b2o2b43o2b2o$29bo41bo$32b37o$31bo37bo$31bob35o
bo$28bo3b2o33b2o3bo$27bobo6b29o6bobo$27bo2bo4bo29bo4bo2bo$28b2o5bob27o
bo5b2o$32bo3b2o25b2o3bo$31bobo6b21o6bobo$31bo2bo4bo21bo4bo2bo$28bo3b2o
5bob19obo5b2o3bo$27bobo7bobobo17bobobo7bobo$27bo2bo5bobo5b13o5bobo5bo
2bo$28b2o5bobo5bo13bo5bobo5b2o$35b2o6bob11obo6b2o$41bobobo9bobobo$40b
obo3b9o3bobo$36b2o2b2o8bo8b2o2b2o$35bobo8b2o5b2o8bobo$36bo8bobo5bobo8b
o$46bo7bo$47b3ob3o$33b2o14bobo14b2o$32bobo11bobo3bobo11bobo$32b2o10b3o
b2ob2ob3o10b2o$43bo13bo$42bobo11bobo$43bo13bo$3b2o91b2o$4b2o89b2o$3bo
93bo4$5bo89bo$5b2o87b2o$4bobo3b3o75b3o3bobo$12bo75bo$b2o8bo77bo8b2o$o
bo95bobo$2bo95bo2$19b3o57b3o$21bo57bo$20bo59bo$14bo71bo$14b2o69b2o$13b
obo69bobo$20b2o46b2o3b2o4b2o$19bobo46bobo2bobo3bobo$12b2o7bo46bo4bo5b
o7b2o$11bobo73bobo$13bo14bo58bo$28b2o$18bo8bobo52bo$18b2o51b2o8b2o$17b
obo51bobo7bobo$71bo!