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Various p2 and p4 photons in B02xx/Syy5 rules:

:LaundryPizza03, 2026:B023/S15:B0238/S15:2:0:2:35:40:7bo4bo9bo4bo$4bo4bo4bo5bo4bo4bo$6b3ob3o4bo4b3ob3o$4bob2ob3o3b5o3b3ob2obo$7bobo4bob3obo4bobo$6bo2bo2bobob3obobo2bo2bo$11b2ob3ob3ob2o$10bo2b4ob4o2bo$10b4o7b4o$5b3obob2o3bobo3b2obob3o$6b3ob2ob9ob2ob3o ...

This is a mildly explosive rule with 2x2's c/8d crawler and a small 4c/13o replicator documented by Eppstein .

x = 1, y = 5, rule = B368/S12578
o$o$o$o$o!


This should be an effective model of Hickerson's 12-unit push and pull mechanisms:

x = 146, y = 120, rule ...

I want to weld together an XOR replicator push and pull mechanism to make a spaceship that moves 3 units every 75 units of time. (This replicator is 4c/13o, so the total speed will be 12c/975o.) I came up with the following mechanism to move these mechanisms:

x = 211, y = 97, rule ...

Best progress thus far on the B368/S12578 cordership; the proposed speed is 32c/312o.

x = 2064, y = 1187, rule = B368/S12578
1260bo$1257bobo2$1259b3o10$bo$2bobo2$3o23$1253bo$1250bobo2$1252b3o10$
72bo$73bobo2$71b3o23$1246bo$1243bobo2$1245b3o10$143bo$144bobo2$142b3o
23$1239bo$1236bobo2$1238b3o10 ...

An end piece for a replicator-based spaceship in B368/S12578.

x = 114, y = 10, rule = B368/S12578
3bo$obo2$2b3o2$17bo31bo7bo23bo7bo23bo$17bo31bo7bo23bo7bo23bo$17bo31bo
7bo23bo7bo23bo$17bo31bo7bo23bo7bo23bo$17bo31bo7bo23bo7bo23bo!

This fits one end of Hickerson's p104 gun (see Eppstein's page on ...

This rule seems to be stable with c and c/2d objects. Dynamically, it resembles the stable B1e rules.

Double post, but (8,1)c/9:
(...)


This and the (7,1)c/8 look so...different from other relativistic oblique spaceships. What was the search methodology used to find it?


They used LLS to find promising frontends and backends. Then they searched those rules with LLSSS using a custom search ...

More c/7os and a few difficult c/2os.

:LaundryPizza03, 2026:B3568/S457:B3568/S457:7:0:1:11:13:3bo3bo$4b3o$2b7o$5ob5o$b3obob3o$4o3b4o$3bobobo$b2ob3ob2o$2bo2bo2bo$3bobobo$2b2obob2o$3b2ob2o$2b2o3b2o!
:LaundryPizza03, 2026:B348/S468:B348/S468:7:0:1:16:134:4b8o$5b6o$3bo3b2o3bo$5bob2obo$4b8o$6bo2bo ...

Is there a way to get a search like this to not get stuck on various repeating components that significantly slow down things and make it difficult to tell if it has other paths besides them? It's probably not just them causing the eventual slowdown, but I imagine it contributes. I assume wcaf ...

At Discord, it has been asked if it is feasible to add an option to detect and eliminate repeating components in searches. This was in context of attempting (7,1)c/8 searches with back-diagonal orientation and a black backside that recedes at c/2d (the same basic layout as May13's (2,1)c/3 outer ...

Over 100 new spaceships at c/2o, c/3o, and c/7o:

:LaundryPizza03, 2026:B267/S0158:B267/S0158:2:0:1:45:38:7b4o23b4o$8b4o21b4o$5bobob2obo19bob2obobo$9bobo5bo2bo3bo2bo5bobo$3bo2bo7bo3bo7bo3bo7bo2bo$7b3o4b2o13b2o4b3o$5b3o3b4o2bob3ob3obo2b4o3b3o$b3ob3o3bo2b2o2bo2bobo2bo2b2o2bo3b3ob3o ...

Larger, but still pretty lame, partial for c/4d:

x = 38, y = 37, rule = B2e3-cnqr5e78/S1c23-q4eqz6
19b2o$18b3o2b2o$15b2ob2ob2ob3o3bo$14bo2bo3b3o2bo2bo3bo$19bo5b2obo3b4o$
16bo2bo3bo6b2o3bo$6b2obo3b4o5bo2bo5b3o3bo$6bo3bo2b3o7bobob6ob2o$6bo2bo
3b2o5bobo4bo5bo$7bo2b4o5b2o3b2ob2o3bo$6bo2b7o2bobo8b2obo ...

Various c/2o and c/2d ships in B2. In particular, c/2o for B2(4-8)/S2(678) is now complete.

:LaundryPizza03, 2026:B2457/S0367:B24578/S03678:2:0:1:46:29:12bobo16bobo$13b2obobo8bobob2o$11b2o2b3ob2o4b2ob3o2b2o$12bob2obo10bob2obo$12b4o3bo6bo3b4o$11bo4bobo8bobo4bo$17bobo6bobo$14bo4b2o4b2o4bo2 ...

The following command:

./qfind -r B256/S04 -v 2c/5 -w 11 -s e

gives:

x = 20, y = 34, rule = B256/S04
8b4o$7b2o2b2o2$8bo2bo$7bo4bo$9b2o$7bo4bo3$6bo6bo$5bo8bo$3bobo8bobo$6b
2o4b2o$3bo5b2o5bo$7bo4bo2$6bo2b2o2bo$8bo2bo$4bo10bo$8b4o$7bo4bo$6bo6bo
$6bo2b2o2bo$2bo14bo$3bo2bobo2bobo2bo$3bob3o4b3obo ...

(2,1)c/5 is complete. In addition to a rediscovery of the one found by May13 in 2023 in B356/S0246, a duplicate of one of the new ships and this suboptimal result:

x = 50, y = 120, rule = B35678/S03578
b5o$b3o$ob4o$2o2bo$6o2$b2o2bo$o2b3o$4b2o$b2ob3o$b3o$b2obobo$bobo2bo$2b
2ob2o$2ob3obo$2b3obo ...

Current rule in the (2,1)c/5 search is B356/S2467. I found the following 4 spaceships since the last post, all of which are new rules or reductions of existing ships:

:LaundryPizza03, 2026:B3578/S1358:B3578/S1358:5:-1:2:50:135:2b5o$bo4bo$b3o$o2bo$3b3o$2b2o2bo$5bobo$5bob2o$4b7o$7bob2o$6bo$7bob2o ...

Many c/2d spaceships in B0, plus a c/6d and more (2,1)c/5 ships. In addition, the ship in B3578/S235 (Ball 2013) was discovered twice. Currently on B3578/S1358.

:LaundryPizza03, 2026:B0137/S34:B0137/S34:6:-1:1:64:64:2b2o$2bob3o$4o2b3o$ob7o$bob6o$bob4obo$b5o2bo$2b3o2bob3o$2b5o3bo$7bo2b3o$7b5obob2o ...

More p5 knightships, plus a 2c/4o that was discovered shortly after the similar one in B3468/S268. At the end of the session, I will also publish a list of rules where the searches got terminated due to a memory overflow. Currently on B3578/S246 (rule #3704).

:LaundryPizza03, 2026:B346/S268:B346 ...

I wrote a shell script for LLSSS-recentering-wao to run (2,1)c/5 at width 10 on all B3 rules that can support c/3d spaceships. (I am searching in lexicographic order with rules interpreted as bitstrings.) At the moment, B357/S13578 is proving very hard (it will likely be identical to the one already ...

Various spaceships discovered by katrina. The p5 knightship doesn't closely resemble any previously known ship.

:katrina, 2026:B34/S13:B348/S138:5:0:2:20:44:7b2o2b2o$6bob4obo$9b2o$9b2o$6bo2b2o2bo$6bobo2bobo$8bo2bo$4bob8obo$2b2obob2o2b2obob2o$b2o4b2o2b2o4b2o$ob2ob2obo2bob2ob2obo$3bo2bo2b2o2bo2bo ...

I'm not sure exactly why you want to search this way, but if you expand your motivations we might have other ideas that could help. I assume you think there are interesting partials that "tilt" (viewed from the W=Y angle of c5k-1) this way and you're running "fixed board" searches (i.e. "llsss ...

All new spaceships published thus far, in DB format:

:May13, 2026:B3568/S4568:B3568/S4568:5:-1:2:63:135:4b3o$3b5o$2b3obob3o$b12o$4ob2ob3obo$2ob2obob2o3b3o$obobobob3ob2obo$bob7o2b4o$b7obo2bo2b2o$bo2bo3b2obob5o$2b5ob4ob3obo$3b3obob3ob3ob2o$b2ob6o2b3o2bo$b2ob2o6b3o2bo$b7ob5ob2o$3b5ob5ob2o ...

2 slightly different 2c/4o's in one of the original rules:

x = 71, y = 44, rule = B3468/S268
21b3o34b3o$9b7o4b2o3bo20b7o4b2o3bo$7b2o4b2o2b6ob2obo16b2o4b2o2b6ob2obo
$5b2o3bobo2b2o6b2o2bobo12b2o3bobo2b2o6b2o2bobo$4bo4b3ob2o2bo5b2obobobo
10bo4b3ob2o2bo5b2obobobo ...

B3/S124a5 (-B6 from the above rule) is less explosive, and the spaceship becomes this p215 (43*5) puffer instead:
x = 74, y = 12, rule = B3/S124a5
15b2o$55bobo$15b2o39bob2o$51b3o6bo10b2o$b2ob2o3bo17b2o26bo3b2o5bobobob
o$o5bobobo8bobo11bo2bo3bo9bo6bo7bo3b5o$o5bobobo8bobo11bo2bo3bo9bo6bo7b
o3b5o ...

Maybe the LifeWiki tutorial should discuss how to make raw geometries. I'd like to search for (2,1)c/5 along the diagonal direction, like the known ship in B36/S345. Here's an rlifesrc partial of that type, oriented to NNW direction:

x = 55, y = 53, rule = B36/S3458
6bo$2b4ob3o$b6ob2o$b2ob7o ...