ConwayLife.com

Updated spaceship collections:
Rule #2, reduced giant c/3 and 2c/5 spaceships

x = 252, y = 134, rule = B35y6a/S34-a56cSuper
.M5.M18.O26.Q9.Q6.Q2.Q.Q2.Q.Q2.Q9.4S13.3U8.3U8.U3.U3.U12.W3.W18.pA24.
2S17.2W2.2W.2W2.2W10.I6.I$3M3.3M16.3O12.2O9.Q.2Q7.2Q.Q4.2Q.2Q.2Q.2Q.
2Q9.4S14.U.2U4.2U.U9.2U.3U.2U12.2W ...

Edit: He says that the max memory option does not work on Cygwin but the program should be able to compile on native windows (???) Give it a shot, I guess

I haven't figured out how to compile the program on native Windows yet, but I tried running it using WSL 2 on my laptop with Windows 11, and ...

For some reason, the --max-memory option doesn't work for me (I'm using Cygwin). Here is an example where I set an extremely low memory limit (1KB), but the search continues anyway:

$ ./rlife llsss --rule 'B3/S23' --filters bcaf --threads 4 --right-edge odd --max-memory 1KB 3c7-f2b '@bg(13)'rlife ...

Absurdly large 2c/5 spaceship in Rule #11:

x = 45, y = 210, rule = B3-nr4eity5e6c7e8/S2-ai3-n4irtwz5ceiq6-e78
16bo11bo$14b5o7b5o$9bo4b2o2bo7bo2b2o4bo$8b3obob2o13b2obob3o$7b2obob3o
2bobo5bobo2b3obob2o$8bo9b3o3b3o9bo$7b5o3b3ob2o3b2ob3o3b5o$7bob2ob2o2bo
bo2b3o2bobo2b2ob2obo$11bobo4b9o4bobo ...

...
While gun_7787 (13 * 599) wasn't, because of relatively small 13x period multiplier (13020 -> 9594):
x = 78, y = 123, rule = LifeHistory
19.2A$19.A.A$21.A4.2A$17.4A.2A2.A2.A$17.A2.A.A.A.A.2A$19.BABABA.A$20.
B2ABA.A$21.2B.BA$20.3B$11.2A6.4B$12.A6.B2A3B$12.A.AB3.B2A3B$13.2AB.
10B$15.13B$15.14B ...

New speed in Rule #14: 4c/9 orthogonal
Spaceships and p18 dot puffer:

x = 126, y = 292, rule = B2-ak3k4aentw5ac6ck7e/S012ik3ejnr45i6i7c
10bo43bo60bo$6bob5obo35bob5obo52bob5obo$7b7o37b7o54b7o$5bobo5bobo33bob
o5bobo50bobo5bobo$4b2o2b5o2b2o31b2o2b5o2b2o48b2o2b5o2b2o$4b2o9b2o31b2o
9b2o48b2o9b2o ...

I'm going to attempt to work on a proof against the existence of spaceships in LongLife.

c/9 diagonal frontend in LongLife:

x = 18, y = 18, rule = B345/S5
9bobobo3bo$7bobob2o3b2o$5bobob8o$4b3o2bo3b3obo$3b4ob3o4bobo$2b4obob3o
2b2o$3b2o3b3ob2o$b2o2bobo3b3o$4bobobob2obo$7o2b4o$2bob3ob2ob2o$3o2bob ...

New spaceship speeds in Blockade: 3c/7 and 3c/8 (period 16)

x = 118, y = 78, rule = B3-ceq4w5a7c8/S2aen3aejnr4aqrw5cijq6a7c
6b2o5b2o21b2o5b2o31b2o5b2o21b2o5b2o$4b6ob6o17b6ob6o28b4o3b4o19b4o3b4o$
4bo4bobo4bo17bo4bobo4bo27b2o2b2ob2o2b2o17b2o2b2ob2o2b2o$4bo3b2ob2o3bo ...

Another (2,1)c/3 spaceship:

x = 316, y = 326, rule = B24678/S24678
297b2ob2o$296bobob2obo$296bob3o$295bob2ob2o$296b2o2b2o$294bobobob2o$
295b2o2b2o2bobo$295bob2o3bobo$297b2obobo2bo$296b3obobobobobo$293bobob
2ob3ob3o$297bobob2o4bobo$293bob4o2b3ob3obobo$294b4o8b5o$293b5ob2o2b10o ...

Two (2,1)c/4 spaceships from LLSSS:

x = 78, y = 124, rule = B267/S5
71bo4bo$70bobobo$66bo4bo$70bo3bob2o$65bo4bo3bo$69bo4b2o$69bo2$63bo2b2o
$62bo4bo2bo2bo2bo$61bo2bo$66bob2o2b2o$65b2obo2bobo$64b2o3b3ob3o$74bo$
67bobo4bo$61bo2b2o7bo$65bo$60bo12bo$72bo4bo$62bo2b2o2b2obo$68bo2b3o$
68bob2obo2bo ...

Negative results from LLSSS-ng for 4c/9 orthogonal: width 23 (odd symmetry) and width 24 (even symmetry)

x = 63, y = 62, rule = B3acijy4-a5cjkr6-in78/S2n3-c4-aijz5-jy6-k
11bo38b2o$9b2ob2o36b2o$9b5o$9b5o30b14o$8b3ob3o28b2ob2ob4ob2ob2o$8b3ob
3o28b16o$6b2ob2ob2ob2o26bo3bobo2bobo3bo ...

Crossposting from the 3-4 Life thread:

2c/5 orthogonal spaceship:

x = 25, y = 238, rule = B34/S34
2b2o17b2o$2b5o11b5o$bo4b4o5b4o4bo$3ob2o3b2o3b2o3b2ob3o$2bo3bo2bobobobo
2bo3bo2$4bobob3o3b3obobo$4b3o3bobobo3b3o$4bo2bobobobobobo2bo$6bob2o5b
2obo$8bo7bo$8b9o$3b4o11b4o$2b2obob2o7b2obob2o ...

2c/5 orthogonal spaceship:

x = 25, y = 238, rule = B34/S34
2b2o17b2o$2b5o11b5o$bo4b4o5b4o4bo$3ob2o3b2o3b2o3b2ob3o$2bo3bo2bobobobo
2bo3bo2$4bobob3o3b3obobo$4b3o3bobobo3b3o$4bo2bobobobobobo2bo$6bob2o5b
2obo$8bo7bo$8b9o$3b4o11b4o$2b2obob2o7b2obob2o$2bo2bo5bobo5bo2bo$2b2o5b
obobobo5b2o$9bobobobo ...

I tried gchromodynamics's new spaceship search program, LLSSS-ng , for the first time.
New smallest 2c/5 spaceship at width 21, odd symmetry (shown with previously known spaceship):

x = 50, y = 120, rule = B3acijy4-a5cjkr6-in78/S2n3-c4-aijz5-jy6-k
5b2ob2ob2ob2o23b3o$3b3ob2obob2ob3o21bobo ...

guntrue_1337 in 84x83=6972:

x = 84, y = 83, rule = B3/S23
42b2o11bo$42b2o10bobo$54bobo2b2o3bo$53b2ob2o2bo2bobo6b2o$57bobo3bobo6b
2o$53b2obo2b4obo$53b2obobo3bo$57bobo3bo$58bobo3bo$59bo3b2o2$45b2o$45b
2o$44bo$45b2o$35b2o8b2o$34bo2bo$33bob2o$33bo48b2o$32b2o48b2o$47b2o$47b
o$48b3o$50bo10b2o$60bobo ...

p67 gun:

x = 147, y = 328, rule = B3acijy4-a5cjkr6-in78/S2n3-c4-aijz5-jy6-k
59bo$57b5o$57b5o$59bo$59bo$58b3o$59bo$58bobo$59bo$58b3o$58b3o4$42b2o$
42b2o4bobo$41b4o2b2ob2o$42b2o4bobo$42b2o$53bo13bo$52b3o10b5o$53bo11b5o
$53bo13bo$52bobo12bo6bo$66b3o3b5o$67bo4b5o$66b3o5bo2$65bo3bo$65bo3bo2$
66b3o4b3o ...

p62 M-ship gun from nbsearch2a (+ T-ship variant):

x = 162, y = 81, rule = B3acijy4-a5cjkr6-in78/S2n3-c4-aijz5-jy6-k
105bo$103b5o$103b5o$105bo2$104b3o$104b3o$105bo$89bo15bo$105bo$87b5o13b
o$87bo3bo3b3o7bo$87b5o2b2o9bo$94bobo7b3o$89bo4bo9b3o2$81b2o6b2o$81b2o
2bobo4bob2o$80b8o4b4o$81b2o2bobo4bob2o ...

p54 from nbsearch2a:

x = 38, y = 13, rule = B3acijy4-a5cjkr6-in78/S2n3-c4-aijz5-jy6-k
11b3o10b3o$12b3o8b3o3$b2o32b2o$b2o4bo4bo12bo4bo4b2o$4o2b8o10b8o2b4o$b
2o4bo4bo12bo4bo4b2o$b2o32b2o3$12b3o8b3o$11b3o10b3o!

Updated gun collection (featuring new p109 and p208 guns):

x = 365, y = 2907, rule ...

J-ship synthesis partial:

x = 69, y = 8, rule = B3acijy4-a5cjkr6-in78/S2n3-c4-aijz5-jy6-k
59b2obo$bo4b2o23bo4b2o28b2o$bobob4o22bobob4o21b3o2b4o$obo2b3o22bobo2b
3o23b3ob3o$2bo3bo25bo3bo28b2o2$34bo$32b2ob2o!


Completed!

x = 54, y = 68, rule = B3acijy4-a5cjkr6-in78/S2n3-c4-aijz5-jy6-k
obo$bo$o ...

p40 oscillator and p110 gun:

x = 72, y = 39, rule = B3acijy4-a5cjkr6-in78/S2n3-c4-aijz5-jy6-k
40b2o$41b2o2$42bobo$42bobo2$41b2o$40b2o27bo2$67b5o$11bo4b2o4bo44bo3bo$
10b2o10b2o43b5o$12bob2o2b2obo$57b3o9bo$14b6o37b4o$57b3o$58bobo3$9b3o
45bo5b3o$9b4o42bob2o4b4o$9b5o41bobo5b4o$10b5o42b2o5b3o$11b4o41bo ...

p40 oscillator found by FWKnightship ( xp40_1uigumoomugiu1zgf91fd33df19fg ):

x = 24, y = 26, rule = B3acijy4-a5cjkr6-in78/S2n3-c4-aijz5-jy6-k
7o2b6o2b7o$5o3bobo2bobo3b5o$2ob2ob12ob2ob2o$3o3b2ob2o2b2ob2o3b3o$2ob3o
bo2bo2bo2bob3ob2o$8ob6ob8o$4o3bob6obo3b4o$bobo2bobo2b2o2bobo2bobo$2bo
2bo2b8o2bo2bo ...

3c/10 partials in ShipWorld:

x = 398, y = 7779, rule = B3acijy4-a5cjkr6-in78/S2n3-c4-aijz5-jy6-k
6b2o2b2o43b3o2b3o53b10o96bo8bo$5b2ob2ob2o41b4o2b4o54bob2obo99b8o$4b2ob
o2bob2o41bob4obo52bob3o2b3obo94b2ob6ob2o$2bob2o6b2obo37b5o2b5o49b5ob2o
b5o94b2ob4ob2o$4bo8bo40b3o4b3o50b2ob3o2b3ob2o94bob6obo ...

Was the 2c/9 found by continuing a search at a lower width? I had been running that exact search for a couple days on 18 threads with qfind, but it felt like it would have taken another couple of days at least.

Yes. A direct width-15 search took two days; then, among a heap of partials from dump ...

New positive result for the spaceship search status table: 2c/9 orthogonal , width 15, odd symmetry

x = 15, y = 150, rule = B3acijy4-a5cjkr6-in78/S2n3-c4-aijz5-jy6-k
7bo$7bo$7bo$4b3ob3o$4bo5bo$2b3ob3ob3o$2b3o5b3o$2b4o3b4o$b5obob5o$b4o5b
4o$ob3o5b3obo$bobo7bobo$3o9b3o$bobo7bobo$b2o9b2o$b2o9b2o ...

Significant reduction of p490 3c/7 rake (19 3c/7 spaceships):

p490 3c/7 rake (new smallest period), 33 3c/7 spaceships of 5 types are used:

x = 839, y = 2047, rule = B3acijy4-a5cjkr6-in78/S2n3-c4-aijz5-jy6-k
402bo$401b3o$398bob2ob2obo$397b11o$396b3ob5ob3o$396bob9obo$396b2o2b5o
2b2o$400b5o ...