Thread for your unsure discoveries

[pcallahan]

The following is an example of the kinds of interactions I really want. You can see that each hit produces a glider and leaves a constellation that can be hit later on. I just want to get the original constellation back at any position and orientation. But except for the two I know about and larger patterns like snark, I can't find anything. There are many collisions that produce another small constellation and a glider. This is the longest chain I was able to find, but it does not cycle. (Patterns in the bottom row show the result I want at a possibly different orientation.)

Code: Select all

x = 204, y = 71, rule = B3/S23
13$12bo42bo30bo35bo30bo21bo$13bo42bo30bo35bo30bo21bo$11b3o40b3o28b3o
33b3o28b3o19b3o5$21bo38b2o40bo27b2o20b2o35b2o$20bobo36bobo4b2o33bobo
26b2o20b2o35b2o$21bo3bo34bo5b2o34bo$24bobo131b2o$19bo3bobo104bo27bobo
27b2o$18bobo3bo104bobo27bo27bobo$19bobo38bo34b2o32bobo56bo$20bobo36bob
o33b2o33bo$21bo38bo29$21b2o42bo32b2o23b2o31b2o$20bobo4b2o35bobo31b2o
23b2o31b2o$21bo5b2o36bo$129b2o$98bo30bobo23b2o$97bobo30bo23bobo$21bo
36b2o37bobo55bo$20bobo35b2o38bo$21bo!

[Scorbie]

@pcallahan How about just requiring that sum(input gliders) <= sum(output gliders)?
i.e. when you have two or more glider outputs, you can have one (or more) reactions without any glider outputs.
perhaps sum(input gliders) <= sum(output gliders) - c for some constant c, for controlling difficulty.

[pcallahan]

How about just requiring that sum(input gliders) <= sum(output gliders)?

I agree that could work, particularly if later gliders just fix something assuming a previous collision had an excess. In practice, the more complex it is, the less likely it will ever fit together. I was hoping (though I've tried this before) that there might be a simple constellation just over my past search horizon that could reappear after a few steps. It would not be likely to appear at the same place or orientation, but could be reset over a few steps. The fact that the biloaf does this is very nearly miraculous. The only thing I thought I had going was that the last time I searched, computers were much slower.

I can also try adding simple catalysts like eater 1 and blocks, but I am not sure I want to go down that rabbit hole. And it's not as useful to have a fixed catalyst if the damaged/restored part gets moved.

[Extrementhusiast]

The 12 could be reduced to 11 if there exists a 3-glider way to make the tub+block constellation; the 10 could be reduced if there is a cheaper way to make the down boat on carrier, or if that plus the loaf or five other similar still-lifes that invoke the same mechanism could be made more cheaply. The 11 could be reduced to 9 if the barge could be made from 3 gliders.

Code: Select all

RLE

Obvious reduction to one of the methods:

Code: Select all

x = 17, y = 14, rule = B3/S23
9b2o$10bo$bo6bo$2bo5b2o$3o$8b2o$3b2o2bobo$2bobo3bo5b3o$4bo8bo2bo$16bo$
12bo3bo$12bo3bo$16bo$13bobo!

[Gamedziner]

The following is an example of the kinds of interactions I really want. You can see that each hit produces a glider and leaves a constellation that can be hit later on. I just want to get the original constellation back at any position and orientation. But except for the two I know about and larger patterns like snark, I can't find anything. There are many collisions that produce another small constellation and a glider. This is the longest chain I was able to find, but it does not cycle.

If it weren't for the fact that you want gliders after each step, I'd say a Crystal would nearly work.

[pcallahan]

If it weren't for the fact that you want gliders after each step, I'd say a Crystal would nearly work.

Yes, but glider conservation is the whole point of this dubious exercise. And if it weren't for the fact that I have to pay my mortgage, I would have much more time to work on it.

Anyway, in the interest of never doing this search again, here is what I found by colliding gliders with still life constellations that fit in a 9x9 box with 18 cells or fewer and keeping cases when the still life cells survive. First off, there were 70383 eaters, nearly all variations of eater-1. There were 747044 boat bits.

There were 21 eaters that were not eater-1, but were all trivial variations on a known eater. I filtered these by checking which did not have a stable population after 38 generations.

Code: Select all

x = 139, y = 138, rule = B3/S23
12b2o28b2o28b2o28b2o28b2o$12b2o28b2o28b2o28b2o28b2o3$12b2o28b2o28b2o
28b2o28b2o$12bobo27bobo27bobo27bobo27bobob2o$14bo29bo29bo2bo26bo2b2o
25bobo$14bob2obo24bobob2o24bobobo25bobobo25bobo$13b2obob2o23b2ob2obo
23b2ob2o25b2ob2o25b2ob2o7$b2o28b2o28b2o28b2o28b2o$obo27bobo27bobo27bob
o27bobo$2bo29bo29bo29bo29bo13$12b2o28b2o28b2o28b2o28b2o$12b2o28b2o28b
2o28b2o28b2o3$12b2o28b2o28b2o28b2o3bo24b2o3b2o$12bobob2o24bobob2o24bob
ob2o24bobobobo23bobobobo$14bobo27bobobo25bobo2bo24bob2o26bob2o$14bo3bo
25bo2b2o25bo3b2o24bo29bo$13b2o2b2o24b2o28b2o28b2o28b2o7$b2o28b2o28b2o
28b2o28b2o$obo27bobo27bobo27bobo27bobo$2bo29bo29bo29bo29bo13$12b2o25b
2o31b2o27bo29b2o$12b2o25b2o31b2o26bobo26bo2bo$101b2o26b2o$39b4o34b2o$
12b2o4b2o19bo3bo2b2o24b2o4bo20b4o26b4o$12bobobo2bo22b2o2b2o24bobobo22b
o3bo2b2o21bo3bo2b2o$14bob2o56bob2o24b2o2b2o24b2o2b2o$14bo59bo$13b2o58b
2o6$31b2o$b2o27bobo28b2o28b2o28b2o$obo29bo27bobo27bobo27bobo$2bo59bo
29bo29bo13$11b2o28b2o28b2o28b2o28bo2bo$10bo2bo27bo29b2o29bo28b4o$11b2o
29bo58bo$41b2o26b4o28b2o26b4o$9b4o56bo3bo2b2o51bo3bo2b2o$9bo3bo2b2o21b
4o29b2o2b2o21b4o29b2o2b2o$12b2o2b2o21bo3bo2b2o51bo3bo2b2o$42b2o2b2o54b
2o2b2o7$61b2o58b2o$b2o57bobo57bobo$obo28b2o29bo28b2o29bo$2bo27bobo57bo
bo$32bo59bo12$17bo$17bobo$17b2o7$2b2ob2o$o2bobo$2o3bo$5bobo$6b2o3$6b2o
$6b2o!

There were 53 cases in which the collision resulted in sticking a beehive on the still life. This is also apparently a known synthesis step.

Code: Select all

x = 287, y = 167, rule = B3/S23
9b2o28b2o28b2o28b2o28b2o28b2o28b2o28b2o29b2o30b2o$9bo29bo29bo29bo29bo
29bo29bo29bo31bo2b2o25bobo$10bo3b2o25bob2o26bob2o26bob2o26bo2bo26bo2bo
26bo2bo26bo2bo26bobobo25bo$11bobobo24b3obo25b3obo25b3obo25b5o25b5o25b
5o25b5o25b2obo26b2obo$10b2obo211b2o26b2o27bobo$13b2o27b2o28b2o28b2o28b
3o27b3o27b2obo26b2o2bo26bo2bo25bo2bo$13bo2bo25bobo27bobobo25bo2bo26bo
2bo26bo2bo26bob2o26bob2o29b2o26bobo$15b2o28bobo27b2o27b2o28b2o28bobo
115b2ob2o$46b2o117bo5$31b2o28b2o28b2o28b2o28b2o28b2o28b2o28b2o28b2o$b
2o27bobo27bobo27bobo27bobo27bobo27bobo27bobo27bobo27bobo$obo29bo29bo
29bo29bo29bo29bo29bo29bo29bo$2bo14$11b2o29b2o18bo29bo29b2o28b2o28bo29b
o29bo29bo$11bo27b2o2bo17bobo27bobo27bo2bo27bo27bobo27bobo27bobo27bobo$
13bo25bob2o18bo2bo27bobo27b2obo27bo27b2o28b2o28b2o28b2o$12b2o29b3o16b
2o2b2o25bo2b2o25bobo28bo$9b2o3b2o27bo2bo17b2obo26b2obo25bob2o24b3o2b2o
$9bob2o3bo28bobo14b2o27b3o28b2o26bo3b2obo$13b3o30bo13bo2bo26bo2bo26bo
2bo27b3o$13bo46b2o28b2o28b2o31bo$192b2o28b2o28b2o28b2o$193bo29bo29bo
29bo$192bo29bo29bo29bo$192bobo27bobo27bobo27bobo$31b2o157b2ob2o25b2ob
2o25b2ob2o25b2ob2o$30bobo158bo29bo29bo29bo$32bo41b2o28b2o28b2o54bo2b2o
26bob2o26bob2o26bob2o$b2o71bobo27bobo27bobo27b2o25b2obo25b2ob2o27bobo
27bobo$obo71bo29bo29bo29bobo116bo$2bo161bo13$2bo29bo29bo29bo29bo42bo
28bo29bo29bo29bo$obo27bobo27bobo27bobo27bobo42bobo26bobo27bobo27bobo
27bobo$b2o28b2o28b2o28b2o28b2o42b2o27b2o28b2o28b2o28b2o6$12b2o28b2o28b
2o28b2o28b2o16b2o$13bo29bo29bo29bo29bo16bobo27b2o28b2o28b2o28b2o$12bo
29bo29bo29bo29bo18bo2bo25bo2bo26bo2bo26bo2bo26bo2bo$12bobo27bobo27bobo
bo25bobobo25bobob2o14b3o26b3o27b3o27b3o28b2o$10b2obobo24b2obobo24b2obo
b2o23b2obob2o23b2o2b2obo17b2obo25b2obo26b2obo26b2obo25bob2o$11bobobo
25bobo2bo24bobo27bobo27bobo20bo2b2o24bo2b2o25bo2b2o25bo2b2o22b3o2bo$
11bobob2o24bo2b2o24bo2bo27bobo27bobo20b2o27b2o29bo29bo25bo4bobo$12bo
27b2o29b2o29bo29bo78b3o31b3o28b2o$211bo35bo14$14bo29bo29bo29bo29bo29bo
29bo29bo28bo29bo$14bobo27bobo27bobo27bobo27bobo27bobo27bobo27bobo26bob
o27bobo$14b2o28b2o28b2o28b2o28b2o28b2o28b2o28b2o27b2o28b2o5$240b2o28b
2o$241bo29bo$2o28b2o28b2o28b2o28b2o28b2o28b2o28b2o29bobo27bobo$o2bo26b
o2bo26bo2bo26bo2bo26bo2bo26bo2bo26bo2bo26bo2bo28b2o28b2o$2b2o28b2o28b
2o28b2o28b2o28b2o28b2o28b2o$3bob2o26bob2o26bob2o26bob2o26bob2o26bob2o
26bob2o26bob2o24bob3o26b4o$bobobo25bobobo25bobobo25bo3bo25bo3bo26bo2bo
27bobo27bobo25b2obo26bo2bo$obo2bo24bobo4bo23b2o4bo23b2o2bobo23b2o2bobo
23bo3bobo23bobo2bo25b2obo30bo24b2o3bo$bo3b2o24bo4b2o28b2o28b2o28bobo
22b2o3b2o23b2o2b2o24bo2bo30b2o28b2o$127bo83b2o14$13bo29bo29bo29bo29bo
29bo29bo29bo29bo29bo$13bobo27bobo27bobo27bobo27bobo27bobo27bobo27bobo
27bobo27bobo$13b2o28b2o28b2o28b2o28b2o28b2o28b2o28b2o28b2o28b2o6$2b2o
28b2o28b2o28b2o28b2o28b2o28b2o28b2o28b2o28b2o$2bo29bo29bo29bo29bo29bo
29bo29bo29bo29bo$3bo29bo29bo29bo29bo29bo29bo29bo29bo29bo$bobo27bobo27b
obo27bobo27bobo27bobo27bobo27bobo27bobo27bobo$obob2o24bobob2o24bobob2o
24bobob2o24bobob2o24bobob2o24bobob2o24bobob2o24bobob2o24bobob2o$2o2bo
25b2o2bo25bobobo25bobobo25bobobo25bobobo25bobobo25bobobo26bo2bo26bo2bo
$4bobo27bobo24b2o2bo25bo2bo26bo2bo26bo3bo25bo3b3o23bo4bo27bobo27bobo$
5b2o28bobo26b2o26b2o30b2o30bo30bo27b2o28b2o28bobo$36bo118b2o119bo14$
13bo29bo29bo$13bobo27bobo27bobo$13b2o28b2o28b2o6$2b2o28b2o28b2o$2bo29b
o29bo$3bo29bo29bo$bobo27bobo27bobo$obob2o25b2ob2o25b2ob2o$bo2bo29bo29b
o$4bobo24b2obo26b2obo$5bobo22bo2bo26bo2bo$6b2o22b2o29b2o!

Finally, there were these two, which are identical by symmetry in which the glider flips the a loaf and two boats flip it back, converting each into ships.

Code: Select all

x = 50, y = 19, rule = B3/S23
13b2o29b2o$13bobo28bobo$14bo30bo$17bo30bo$12bo3bobo24bo3bobo$11bobo3b
2o23bobo3b2o$11bo2bo27bo2bo$12b2o29b2o9$b2o28b2o$obo27bobo$2bo29bo!

[pcallahan]

Different unsure discovery, so I am starting a new post.

Has anyone else seen/used this glider collision that turns a bheptomino? It emits one glider and does the turn in 60 steps, making it useless for new oscillators, but coincidentally compatible with p30 components.

Code: Select all

x = 15, y = 4, rule = B3/S23
o11b3o$b2o9bo$2o10bobo$13b2o!

With considerable effort (for me and not for the timing gurus among us), I managed to construct this pattern that drives it around a p240 track with guns and gets the output gliders out of harm's way with pentadecathlons EDIT: I replaced the 180 degree buckaroos since these are simpler and less of a distraction from the real action in the center. It looks like I should be able to recirculate the gliders back as long as I can adjust diagonal and phase. There is plenty of room between incoming and outgoing gliders.

Code: Select all

x = 210, y = 210, rule = B3/S23
74b2obo$70b2o2bob2o$69bobo$71bo4$74b2o5b2o$74b2o5b2o2$77b2o$77b2o4$54b
2o$54b2o4b2o3b2o$58b4o3bobo$50b2o5bo2bo2bo3bo$50b2o5bo4bo3b2o$58bo3bo$
63bo6bo5bo$70bo5bo$68b4o3b4o$67b2o9b2o$66b3o2b2ob2o2b3o$66b2o3b2ob2o3b
2o$67b3obo3bob3o$68b2o7b2o$69b3o3b3o$71b2ob2o$70bobobobo87b2o$71bo3bo
88bo$154b2o6bobo$152bo2bo6b2o$143b2o6bo$143b2o6bo6bo$151bo7b2o$46bo
105bo2bo$46bobo105b2o$46b2o4$31bo121bobo$31b3o119b2o$34bo119bo$33b2o2$
37bo$37bo152b2o$36bo153b2o3$33b2o3b2o153b2o$33bo5bo153b2o2$34bo3bo151b
2o$35b3o152b2o7$35b2o163b3o$35b2o162bo2bo$110bo71b2o15b2o$110bo70bo2bo
$109b3o72b2o15bo2bo$178bo5b3o15b2o4bo$177bobo3bo2bo12b2o6bobo$109b3o
66b2o3b3o13b3o6b2o$110bo89bo$110bo67b2o3b3o14bo2bo4b2o$110bo66bobo3bo
2bo14b2o6bo$110bo67bo5b3o21bo$109b3o72b2o12b2o8b2o$181bo2bo13b2o$182b
2o$109b3o$110bo90b2o$110bo90b2o11$66b2o6b2o$64bo4bo2bo4bo$64bo4bo2bo4b
o$64bo4bo2bo4bo$66b2o6b2o2$89bo11b3o$90b2o9bo$89b2o10bobo$102b2o10$
134b2o6b2o$132bo4bo2bo4bo$132bo4bo2bo4bo$132bo4bo2bo4bo$134b2o6b2o11$
7b2o90bo$7b2o90bo$98b3o$28b2o$10b2o15bo2bo$2o8b2o18b2o66b3o$bo22bo5b3o
52bo13bo$o6b2o14bobo3bo2bo52b2o12bo$2o4bo2bo14b2o3b3o52bobo12bo$9bo89b
o$8b3o13b2o3b3o66b3o$9b2o12bobo3bo2bo116b2o$6b2o16bo5b3o115b2o$5bo2bo
21b2o66b3o49bo$27bo2bo68bo$9b2o17b2o69bo$7bo2bo162b2o$7b3o163b2o2$24bo
$25bo$23b3o3$18b2o152b3o$18b2o151bo3bo2$15b2o153bo5bo$15b2o153b2o3b2o
3$18b2o153bo$18b2o152bo$172bo2$175b2o$175bo$176b3o$178bo5$54b2o$54bo2b
o$49b2o7bo$51bo6bo6b2o$58bo6b2o$46b2o6bo2bo75bo5bo$45bobo6b2o77bo5bo$
45bo85b4o3b4o$44b2o84b2o9b2o$129b3o2b2ob2o2b3o$129b2o3b2ob2o3b2o$130b
3obo3bob3o$131b2o7b2o$132b3o3b3o$134b2ob2o$133bobobobo$134bo3bo2$146bo
$147bo3bo$142b2o3bo4bo5b2o$142bo3bo2bo2bo5b2o$142bobo3b4o$143b2o3b2o4b
2o$154b2o4$131b2o$131b2o2$127b2o5b2o$127b2o5b2o6$132b2obo$132bob2o!

Since there is no net loss of gliders, can the whole thing be made to work with only reflectors (p6, p30, p15, etc.)? I am too exhausted now to answer but maybe someone has a quick yes/no/already done in 1992.

[pcallahan]

Here's the period 240 bheptomino turner stabilized with only pentadecathlons and snarks. I lucked out on phase shifts. I haven't tried to compact the size. (EDIT: I just replaced it with a smaller version.) I wish the pentadecathlons didn't need to be so close to the bheptomino turner, but that seems unavoidable to prevent a collision.

Obviously, if you just want p240, this a very silly way to get it.

Code: Select all

x = 182, y = 174, rule = B3/S23
71b2o3b2o$71b2o2bob3o$75bo4bo$71b4ob2o2bo$71bo2bobobob2o$74bobobobo$
75b2obobo$79bo2$65b2o$66bo7b2o$66bobo5b2o$67b2o5$84bo$85b2o$77b2o5b2o$
77bo$78b3o$80bo6$26b2o3b2o$26b2o2bob3o$30bo4bo$26b4ob2o2bo$26bo2bobobo
b2o10bo$29bobobobo9b5o14b2o$30b2obobo8bo5bo13bo$34bo9bo2b3o12bobo$43b
2obo15b2o$20b2o21bo2b4o69bo$21bo7b2o13b2o3bo3b2o62b3o$21bobo5b2o15b3o
4b2o61bo$22b2o22bo69b2o$43b2obo$43b2ob2o$124b2ob2o$125bob2o$54b2o69bo$
55bo61b2o4b3o$32b2o18b3o62b2o3bo3b2o$32bo19bo69b4o2bo$33b3o72b2o15bob
2o$35bo71bobo12b3o2bo$107bo13bo5bo$106b2o14b5o$95b3o26bo$95bobo$95b3o$
95b3o20b2o3b2o$95b3o20b2o2bob3o$4bo90b3o24bo4bo$2b5o14b2o72bobo20b4ob
2o2bo$bo5bo13bo73b3o20bo2bobobob2o$bo2b3o12bobo99bobobobo$2obo15b2o61b
2o38b2obobo$o2b4o8bo65b2o43bo$b2o3bo3b2o2b2o67bo$3b3o4b2o2bobo95b2o$3b
o109bo7b2o$2obo109bobo5b2o$2ob2o109b2o3$11b2o78b2o$12bo52bobo22bo2bo$
9b3o54b2o21bo2bo$9bo56bo21bo$88bo2bo3b2o27b2o$54bo4bo28bobo6bo26bo$52b
2ob4ob2o34b2o27b3o$54bo4bo37b2o28bo7bobo$68bo23bo43b2o$69b2o23bob2o38b
o$68b2o23b2ob2o$96b2o5$73bobo18b2o$73b2o19b2o$74bo6$54bo67bo4bo$54b3o
63b2ob4ob2o$57bo64bo4bo$56b2o$90bo81bo$88b2o80b3o$89b2o78bo$169b2o3$
66b2o109b2ob2o$59b2o5bobo109bob2o$59b2o7bo109bo$68b2o100b2o4b3o$170b2o
3bo3b2o$55bo119b4o2bo$54bobob2o101b2o15bob2o$54bobobobo99bobo12b3o2bo$
53b2obobobo2bo20b3o73bo13bo5bo$54bo2b2ob4o20bobo72b2o14b5o$54bo4bo24b
3o90bo$55b3obo2b2o20b3o$57b2o3b2o20b3o$84b3o$84bobo$57bo26b3o$55b5o14b
2o$54bo5bo13bo$54bo2b3o12bobo71bo$53b2obo9bobo3b2o72b3o$53bo2b4o5bo2bo
60bo19bo$54b2o3bo3b6o58b3o18b2o$56b3o4b2o61bo$56bo69b2o$53b2obo88bo$
53b2ob2o86b2o$126bo7b2ob2o5bobo$125b2o8bob2o$64b2o56b4ob2o6bo22b2o$65b
o56b2o2b2o2bob4o15b2o5bobo$62b3o56b2obo2b2o7b2o13b2o7bo$62bo59bo2bobo
2bo2b3o2bo21b2o$118b2o2bo4b2o6bob2o$117bobo12b3o2bo9bo$117bo8bo4bo5bo
8bobob2o$116b2o5bo2bo5b5o9bobobobo$123bobo8bo10b2obobobo2bo$146bo2b2ob
4o$146bo4bo$147b3obo2b2o$149b2o3b2o6$101bo$101b3o$104bo$103b2o7$113b2o
$106b2o5bobo$106b2o7bo$115b2o2$102bo$101bobob2o$101bobobobo$100b2obobo
bo2bo$101bo2b2ob4o$101bo4bo$102b3obo2b2o$104b2o3b2o!

[testitemqlstudop]

can a spaceship be built?

Code: Select all

x = 179, y = 331, rule = LifeHistory
176.3A$168.3A5.A$176.3A18$148.A$148.A$148.A19$126.3A43.3A$164.3A5.A$
172.3A17$106.A$106.A37.A$106.A37.A$144.A18$84.3A$122.3A43.3A$160.3A5.
A$168.3A16$64.A$64.A37.A$64.A37.A37.A$102.A37.A$140.A17$42.3A$80.3A$
118.3A43.3A$156.3A5.A$164.3A15$22.A$22.A37.A$22.A37.A37.A$60.A37.A37.
A$98.A37.A$136.A16$3A$38.3A$76.3A$114.3A43.3A$152.3A5.A$160.3A15$18.A
$18.A37.A$18.A37.A37.A$56.A37.A37.A$94.A37.A$132.A17$34.3A$72.3A$110.
3A43.3A$148.3A5.A$156.3A16$52.A$52.A37.A$52.A37.A37.A$90.A37.A$128.A
18$68.3A$106.3A43.3A$144.3A5.A$152.3A17$86.A$86.A37.A$86.A37.A$124.A
19$102.3A43.3A$140.3A5.A$148.3A18$120.A$120.A$120.A19$144.3A$136.3A5.
A$144.3A!

[Moosey]

can a spaceship be built?

Code: Select all

x = 179, y = 331, rule = LifeHistory
176.3A$168.3A5.A$176.3A18$148.A$148.A$148.A19$126.3A43.3A$164.3A5.A$
172.3A17$106.A$106.A37.A$106.A37.A$144.A18$84.3A$122.3A43.3A$160.3A5.
A$168.3A16$64.A$64.A37.A$64.A37.A37.A$102.A37.A$140.A17$42.3A$80.3A$
118.3A43.3A$156.3A5.A$164.3A15$22.A$22.A37.A$22.A37.A37.A$60.A37.A37.
A$98.A37.A$136.A16$3A$38.3A$76.3A$114.3A43.3A$152.3A5.A$160.3A15$18.A
$18.A37.A$18.A37.A37.A$56.A37.A37.A$94.A37.A$132.A17$34.3A$72.3A$110.
3A43.3A$148.3A5.A$156.3A16$52.A$52.A37.A$52.A37.A37.A$90.A37.A$128.A
18$68.3A$106.3A43.3A$144.3A5.A$152.3A17$86.A$86.A37.A$86.A37.A$124.A
19$102.3A43.3A$140.3A5.A$148.3A18$120.A$120.A$120.A19$144.3A$136.3A5.
A$144.3A!

Well, the pis do pull the blinker back, so it would have to go east, but that doesn’t do us any good because the gliders are going nw and sw, so I would Imagine it needs to be huge.

Also, it would need to be modified so that n gliders going in make >n gliders going out.

[Jormungant]

Alternating H-to-G

Code: Select all

x = 87, y = 57, rule = LifeHistory
29.4B$30.4B$31.4B$16.A15.4B$16.3A14.4B$19.A14.4B$18.AB15.4B$18.A2BA
14.4B$19.3BA14.4B$8.4B2.B.3B.A4B13.4B$8.4B.18B8.4B$7.2A5B2A16B8.4B$7.
2A5B2A16B9.4B$8.B.22B10.4B$10.B2A21B9.4B$11.2A7B2.13B9.4B$11.8B6.10B
10.4B$13.7B7.7B12.4B$12.10B6.8B11.4B$12.13B2.9B12.4B$13.14B2A4B2A2B
12.4B$15.11BA2BA3BAB2A.B11.4B$15.11BA2BA6B4A11.4B$15.11B2AB2A3B6A12.
4B$16.12B2A4B.4B14.B3A$23.4B.3B.B2.4B15.A3B19.A$24.4B27.A3B17.A.A$25.
4B3.4B20.4B17.A$26.4B.6B20.4B$27.12B19.4B13.5A$28.13B5.7B.B4.8B8.A4.A
$29.7B.4B5.13B.8B9.BAB.A$30.14BABA24B6.B2A.A2.A$13.2A16.13BA22BD4B3.A
4B.A.A.A$14.A16.34B3D4B2.ABAB3.A2.A$14.A.AB3.2BA3B4.12B2A3BA16BDBD5B.
A2BA2.2A$15.2AB.2BABA19B2ABABA16BD9B2A$17.2B2A24BA9B3.11B2A4B$17.2B2A
17B3.B2.10B6.9B2A4B$18.B2A10B.5B8.6B9.15B$19.2BABA5B3.5B9.3B12.13B.B
9.B$21.2BA3B5.5B9.B15.16B7.B$31.7B7.2A16.17B$31.7B7.A18.4B2.10B$31.7B
8.A16.B2C2B5.8B$31.2A3B2A7.2A17.2C6.10B$31.7B35.9B$31.BA3BAB38.4B$32.
B3AB40.4B$32.B3AB41.4B$33.3B43.4B$31.4B45.4B$31.2A48.4B$32.A49.4B$29.
3A51.4B$29.A54.3B$85.2B!

[dvgrn]

Alternating H-to-G...

That's a nice one isn't it? It's been discovered a couple of times already. At least I didn't completely forget about it this time around. It's in the period doubler stamp collection, which probably should be annotated better so it's easier to find out where things come from.

[calcyman]

Along with the bronco and rectifier, that's another good reason to include eater3s in the /data/bespoke directory of slmake.

[dvgrn]

Along with the bronco and rectifier, that's another good reason to include eater3s in the /data/bespoke directory of slmake.

Yikes. Sounds good in theory, but... oh, wait, eater3s don't cost 72 gliders any more. Is there any more recent recipe that's more slow-salvo compatible than this one from 2016?

The loaf has to be built after the large catalyst. For the orientation where the loaf is behind the catalyst from the point of view of the slow salvo, maybe it would make sense to do the construction with a two-stage slow salvo, like the one on the right below?

Code: Select all

x = 203, y = 126, rule = B3/S23
84bo$83bobo$83b2o5$23b2o63b2o$23bo64bo$11b2o8bobo52b2o8bobo$11bobo7b2o
53bobo7b2o$12bo18b2o44bo18b2o$31b2o63b2o$14b2o63b2o$14b2o63b2o4$2b2o
63b2o$2bobo62bobo$3bo15b2o47bo15b2o$6b2o11b2o13b2o35b2o11b2o13b2o$6b2o
7b2o16bobo35b2o7b2o16bobo$15b2o15bobo45b2o15bobo$33bo64bo$22b2o63b2o$
13b2o7bobo53b2o7bobo$13b2o8bo54b2o8bo28b2o$2b2o63b2o33b2o13bobo$3bo51b
2o11bo33bobo13bo$3o52bobo7b3o35b2o$o17b2o36bobo6bo17b2o$17bobo37bo24bo
bo$18bo64bo3$111b2o$110bobo$4b2o63b2o39b2o$4b2o11b2o50b2o11b2o$17bobo
62bobo$19bo64bo$19b2o63b2o12$46b2o63b2o$46bobo62bobo$46bo64bo2$80b2o$
80bobo$81bo63$200b2o$200bobo$200bo!
#C [[ X -40 Y -30 Z 5 THUMBNAIL THUMBSIZE 2 THEME 4 HEIGHT 480 AUTOSTART PAUSE 2 LOOP 900 ]]

Or do you think slsparse is clever enough to push a loaf that far in behind the big still life, without needing any extra hints?

[calcyman]

The loaf has to be built after the large catalyst. For the orientation where the loaf is behind the catalyst from the point of view of the slow salvo, maybe it would make sense to do the construction with a two-stage slow salvo, like the one on the right below?

Thanks! Here's a 186-glider slow synthesis:

Code: Select all

x = 8073, y = 8072, rule = B3/S23
2o$2o18$15b2o$15bobo$15bo18$38b2o$38bobo$38bo18$46b2o$46bobo$46bo19$
77b3o$77bo$78bo17$82b2o$82bobo$82bo18$99b2o$99bobo$99bo18$119b2o$119bo
bo$119bo18$150b2o$150bobo$150bo29$170b3o$170bo$171bo7$208bo$207b2o$
207bobo28$234bo$233b2o$233bobo29$253b3o$253bo$254bo27$298b2o$297b2o$
299bo28$313b2o$313bobo$313bo28$335b2o$335bobo$335bo28$336b2o$335b2o$
337bo28$358bo$357b2o$357bobo38$402b2o$401b2o$403bo38$448bo$447b2o$447b
obo59$500b3o$500bo$501bo38$540b3o$540bo$541bo37$571b2o$571bobo$571bo
19$595b3o$595bo$596bo48$645b3o$645bo$646bo17$703b2o$702b2o$704bo38$
743bo$742b2o$742bobo38$780b2o$779b2o$781bo38$809b2o$808b2o$810bo29$
864b3o$864bo$865bo27$883b2o$883bobo$883bo28$911b2o$911bobo$911bo28$
962b2o$961b2o$963bo28$995b2o$994b2o$996bo29$1027b3o$1027bo$1028bo27$
1064bo$1063b2o$1063bobo28$1076b2o$1076bobo$1076bo28$1114bo$1113b2o$
1113bobo29$1131b3o$1131bo$1132bo27$1173bo$1172b2o$1172bobo29$1217b3o$
1217bo$1218bo47$1266b2o$1266bobo$1266bo29$1294b3o$1294bo$1295bo27$
1328b2o$1328bobo$1328bo28$1363b2o$1362b2o$1364bo38$1394b2o$1394bobo$
1394bo39$1423b3o$1423bo$1424bo37$1467b2o$1467bobo$1467bo48$1514bo$
1513b2o$1513bobo38$1558b2o$1557b2o$1559bo38$1595bo$1594b2o$1594bobo29$
1617b3o$1617bo$1618bo28$1647b3o$1647bo$1648bo27$1672b2o$1672bobo$1672b
o38$1700b2o$1700bobo$1700bo79$1790b3o$1790bo$1791bo38$1842b3o$1842bo$
1843bo37$1871b2o$1871bobo$1871bo39$1914b3o$1914bo$1915bo37$1956b2o$
1955b2o$1957bo39$1992b3o$1992bo$1993bo38$2035b3o$2035bo$2036bo37$2072b
2o$2072bobo$2072bo39$2112b3o$2112bo$2113bo38$2149b3o$2149bo$2150bo37$
2177b2o$2177bobo$2177bo38$2221bo$2220b2o$2220bobo38$2270b2o$2269b2o$
2271bo48$2304bo$2303b2o$2303bobo38$2356b2o$2355b2o$2357bo38$2387bo$
2386b2o$2386bobo38$2430bo$2429b2o$2429bobo38$2465b2o$2464b2o$2466bo38$
2494b2o$2494bobo$2494bo38$2525b2o$2524b2o$2526bo38$2561b2o$2560b2o$
2562bo38$2604b2o$2603b2o$2605bo38$2668bo$2667b2o$2667bobo98$2755b2o$
2754b2o$2756bo48$2801b2o$2800b2o$2802bo48$2851b2o$2850b2o$2852bo38$
2881b2o$2881bobo$2881bo38$2923b2o$2923bobo$2923bo38$2966bo$2965b2o$
2965bobo58$3033bo$3032b2o$3032bobo59$3095b3o$3095bo$3096bo57$3145bo$
3144b2o$3144bobo58$3196b2o$3195b2o$3197bo38$3240bo$3239b2o$3239bobo58$
3292b2o$3291b2o$3293bo58$3369bo$3368b2o$3368bobo59$3429b3o$3429bo$
3430bo57$3486bo$3485b2o$3485bobo59$3548b3o$3548bo$3549bo37$3580b2o$
3580bobo$3580bo38$3636b2o$3636bobo$3636bo39$3679b3o$3679bo$3680bo58$
3734b3o$3734bo$3735bo57$3808b2o$3807b2o$3809bo99$3891b3o$3891bo$3892bo
37$3942b2o$3941b2o$3943bo38$3987bo$3986b2o$3986bobo38$4017b2o$4017bobo
$4017bo38$4046b2o$4045b2o$4047bo38$4085b2o$4084b2o$4086bo39$4131b3o$
4131bo$4132bo38$4165b3o$4165bo$4166bo38$4203b3o$4203bo$4204bo37$4244bo
$4243b2o$4243bobo118$4378b2o$4378bobo$4378bo38$4420b2o$4419b2o$4421bo
48$4458b2o$4457b2o$4459bo39$4514b3o$4514bo$4515bo38$4546b3o$4546bo$
4547bo48$4608b3o$4608bo$4609bo48$4654b3o$4654bo$4655bo47$4714b2o$4713b
2o$4715bo48$4760bo$4759b2o$4759bobo48$4806b2o$4806bobo$4806bo48$4860bo
$4859b2o$4859bobo48$4913bo$4912b2o$4912bobo48$4957b2o$4956b2o$4958bo
48$5012b2o$5011b2o$5013bo58$5064bo$5063b2o$5063bobo39$5129b3o$5129bo$
5130bo48$5182b3o$5182bo$5183bo97$5279b2o$5279bobo$5279bo48$5324b2o$
5323b2o$5325bo48$5365b2o$5364b2o$5366bo48$5418b2o$5417b2o$5419bo49$
5467b3o$5467bo$5468bo48$5515b3o$5515bo$5516bo47$5568b2o$5568bobo$5568b
o49$5606b3o$5606bo$5607bo48$5666b3o$5666bo$5667bo47$5707b2o$5707bobo$
5707bo48$5757b2o$5757bobo$5757bo98$5860b2o$5860bobo$5860bo98$5913b2o$
5913bobo$5913bo48$5959b2o$5959bobo$5959bo48$6017b2o$6017bobo$6017bo49$
6054b3o$6054bo$6055bo48$6111b3o$6111bo$6112bo47$6198bo$6197b2o$6197bob
o48$6234b2o$6234bobo$6234bo48$6301b2o$6300b2o$6302bo48$6354b2o$6353b2o
$6355bo48$6399b2o$6398b2o$6400bo48$6452bo$6451b2o$6451bobo49$6498b3o$
6498bo$6499bo47$6566bo$6565b2o$6565bobo58$6623b2o$6622b2o$6624bo38$
6660b2o$6659b2o$6661bo38$6705b2o$6705bobo$6705bo38$6740b2o$6739b2o$
6741bo38$6777bo$6776b2o$6776bobo38$6819bo$6818b2o$6818bobo38$6841b2o$
6841bobo$6841bo39$6875b3o$6875bo$6876bo57$6940b2o$6939b2o$6941bo39$
6987b3o$6987bo$6988bo37$7026b2o$7025b2o$7027bo38$7063b2o$7062b2o$7064b
o38$7104bo$7103b2o$7103bobo38$7138b2o$7138bobo$7138bo38$7182bo$7181b2o
$7181bobo38$7224bo$7223b2o$7223bobo39$7270b3o$7270bo$7271bo38$7307b3o$
7307bo$7308bo37$7348bo$7347b2o$7347bobo38$7388b2o$7387b2o$7389bo38$
7422b2o$7422bobo$7422bo38$7468bo$7467b2o$7467bobo38$7511b2o$7510b2o$
7512bo38$7547b2o$7546b2o$7548bo38$7584b2o$7583b2o$7585bo38$7624bo$
7623b2o$7623bobo38$7671b2o$7671bobo$7671bo48$7682bo$7681b2o$7681bobo
38$7718b2o$7717b2o$7719bo38$7773b2o$7773bobo$7773bo38$7807b2o$7807bobo
$7807bo38$7842b2o$7841b2o$7843bo38$7882b2o$7882bobo$7882bo38$7943b2o$
7943bobo$7943bo39$7963b3o$7963bo$7964bo17$8030b2o$8030bobo$8030bo18$
8070b2o$8070bobo$8070bo!

[dvgrn]

Thanks! Here's a 186-glider slow synthesis...

Yup, that should be the only expensive orientation.

Did you ask slsparse about dropping a loaf behind the main 30-bit still life, though? It doesn't look totally impossible that some known recipe might happen to reach that far over.

[pcallahan]

Maybe this belongs in "Thread for vintage/retro patterns" but I found this potentially useful p30 device based on a collision between one glider and a p30 stream.

Code: Select all

x = 55, y = 53, rule = B3/S23
$53bo$52bo$52b3o37$24bo$2bobo18bobo$3b2o16b2o3bo14b2o$3bo17b2o3bo13bob
o$21b2o3bo12b3o4b2o$18b2o3bobo12b3o4bo2b4o$17bobo4bo6bo7b3o4b2ob3o$17b
o11b2o9bobo$16b2o12b2o9b2o!

It's the sort of thing it would not surprise me to see in an ancient pattern by DRH if he found it useful, but I found it using gencols and don't recall seeing it before.

When the glider hits the p30 stream, it starts a reaction that deletes 3 gliders This provides 3 p30 windows that can be read as inverted bits.

It also leaves a tub off to the left of the stream, and there is enough clearance to collide it later and adapt bit streams with different timing. I haven't figured out if it's useful for something I'm working on. It's not even particularly elegant, but I can see it fitting into the p30 toolset to provide fanout out and fix timing incompatibility.

It requires 150 repeat time, 120 because of the gliders it removes and another cycle to allow for removal of the tub.

Driven by p150 guns from Dieter and Peter's collection.

Code: Select all

x = 116, y = 55, rule = B3/S23
89b2o21b2o$88b3o21bo$85bob2o15bo5bobo$78b2o5bo2bo8b3o4bobo3b2o$2b2o21b
obo50b2o5bob2o16bobo$3bo21bo2bo59b3o2b2o2bo7bo2bo$3bobo4bo6bo10b2o59b
2o2bo3bo7bobo$4b2o3bobo5bo8bo3b2o4b2o56bo2bo6bobo$8bob2o6bo9b2o6b2o35b
2o19b2o8bo6b2o$7b2ob2o9b2o2bo2bo45bo36bobo$8bob2o5b3o2bo2bobo46bobo35b
3o$9bobo7b4o52b2o36b2o$3b2o5bo9b2o19b2o43bo26b2o$bo2bo36bo44bobo22bobo
$39bobo44b2o24bo$o26bobo2b3o4b2o$27bo3bo2bo40b2ob2o7bo$b2o23bo4b3o40b
3ob2o6bobo20b2o3b2o$3bo23bo8b2o37bo3bo5b2obo20b2o3b2o$27bo2bo3bo2bo40b
o7bob3o$25bo3bo4b3o41bo2bo4b3ob2o19b3o$2o3b2o17bo3bo6bo41bo3bo5bo2bo
20b3o$2o3b2o16bo3b2o46b2o2b2o7b2o22bo$b5o20bo4b2o42b5o$2bobo23bob4o44b
o$20bo6b2obo2bo44bo$2b3o14bo2bo4b2o3bo73bobo$19bo8bo2bo66b3o5bo3bo$20b
obo5bo64b2o2bo2bobo7bo$21b2o68bo2bo2b2o7bo4bo$8bo7bo65b2o6bo19bo$6bobo
5b4o64b2o6bo10b3o2bo3bo$4b2o8b2o2bo2b2o67bo15bobo$4b2o11b2o2b2o68bo2bo
$4b2o7bo10b2o6b2o59b2o$6bobo4bo10b3o5b2o$8bo4bo10b2o$21b2o49b2o$21b2o
49bobo$50bobo22bo11bobo$51b2o19bo2bo10bo2bo4bo$51bo23bo9b2o5b2o$65b2o
5bobo8b2o3bo8b2o$64bobo5b2o11b2o10b2o$64bo12bo8bo2bo$59b2o2b2o10b2o10b
obo$58b3o15b2o6$68bobo$68b2o$69bo!

ADDED: More retro-fun. I believe this is the fanout device I actually want. I am sure I have seen it a bunch of places and it's very old but I never used it. Signal to the right, inverse to the left.

Code: Select all

x = 10, y = 8, rule = B3/S23
2bo$3b2o$2b2o2$9bo$7b2o$2o6b2o$2o!

[praosylen]

A fairly versatile p2 catalyst:

Code: Select all

x = 9, y = 11, rule = B3/S23
2b2o$bobo$3bob2obo$2obobob2o$3bo$2bobo$3bo2$b2o$bo$bo!

Minimally obtrusive version:

Code: Select all

x = 9, y = 10, rule = B3/S23
2bo$2b3o$5bo$2b2ob3o$bobo4bo$3bob3o$2obobo$3bo$2bobo$3bo!

Amusingly, it can function as an eater eater:

Code: Select all

x = 9, y = 12, rule = B3/S23
2b2o$bobo$3bob2obo$2obobob2o$3bo$2bobo$3bo2$b2o$bo$2b3o$4bo!

[Kazyan]

A fairly versatile p2 catalyst:

Code: Select all

x = 9, y = 11, rule = B3/S23
2b2o$bobo$3bob2obo$2obobob2o$3bo$2bobo$3bo2$b2o$bo$bo!

Minimally obtrusive version:

Code: Select all

x = 9, y = 10, rule = B3/S23
2bo$2b3o$5bo$2b2ob3o$bobo4bo$3bob3o$2obobo$3bo$2bobo$3bo!

Amusingly, it can function as an eater eater:

Code: Select all

x = 9, y = 12, rule = B3/S23
2b2o$bobo$3bob2obo$2obobob2o$3bo$2bobo$3bo2$b2o$bo$2b3o$4bo!

I've seen many reactions where this exact catalytic reaction would be helpful, but for which a proper tool didn't exist--this will be helpful for something out there, for sure.

[Moosey]

That reaction is useful—except I can’t find a use. This produces a R and would be a pre-BH->R, but it’s in a horrible location (i.e. instantly destroys catalyst) and doesn’t restore the bait.

Code: Select all

x = 12, y = 14, rule = LifeHistory
5.A$5.3A$8.A$5.2A.3A$4.A.A4.A$6.A.3A$3.2A.A.A$6.A$5.A.A$6.A$ACD$2C2.
2A$.D2.A$4.A!

[Sokwe]

A fairly versatile p2 catalyst:

Code: Select all

x = 9, y = 11, rule = B3/S23
2b2o$bobo$3bob2obo$2obobob2o$3bo$2bobo$3bo2$b2o$bo$bo!

This object has certainly been used as a catalyst before, such as by Noam Elkies in the first p22 oscillator:

Code: Select all

x = 33, y = 23, rule = B3/S23
12b2o5b2o$7b2o3bo7bo3b2o$8bo4bo5bo4bo$5b2obob3obo3bob3obob2o$8bobo3bo
3bo3bobo$6bobo5bobobo5bobo$7bobo2b2obobob2o2bobo$8bo3bo2bobo2bo3bo$4b
2o8b2ob2o8b2o$2o2bo23bo2b2o$obobo3b3o11b3o3bobobo$2bob2o2bobo11bobo2b
2obo$obobo3b3o11b3o3bobobo$2o2bo23bo2b2o$4b2o8b2ob2o8b2o$8bo3bo2bobo2b
o3bo$7bobo2b2obobob2o2bobo$6bobo5bobobo5bobo$8bobo3bo3bo3bobo$5b2obob
3obo3bob3obob2o$8bo4bo5bo4bo$7b2o3bo7bo3b2o$12b2o5b2o!

I suspect, however, that it has gone underutilized and may indeed find some new significant use with a bit of searching. It is also known to work with a candlefrobra:

Code: Select all

x = 5, y = 14, rule = B3/S23
b2o$b2o2$b4o$o3bo$2o$b2o$b2o$bobo$2bo2$2o$o$o!

[pcallahan]

Has anyone seen this p30 glider-to-MWSS converter before? I found it running gencols on collisions of two gliders and stable perpendicular queenbee shuttles. It is stable with either or both gliders missing and can generate MWSS with p60 spacing.

Code: Select all

x = 110, y = 86, rule = B3/S23
28bo$25b4o4bo$16bo7b4o5bo$15bobo6bo2bo9b2o$3b2o9bo3b2o4b4o9b2o$3b2o9bo
3b2o5b4o$14bo3b2o8bo$15bobo$16bo2$27b2o$27b2o4$21bo$9b2o10b2o10bo$9b2o
9bobo11b2o$2o3bo6b2o12b2o5b2o$obo3bo5b3o10bo3bo$b5o6b2o10bo5bo$2b3o4b
2o13bo3bob2o$9b2o13bo5bo$25bo3bo3b2o$26b2o5bobo$35bo$35b2o23$74b2o$75b
o$75bobo9bo$76b2o8b4o$85b2ob4o5b2o$84b3ob2o3bo3bo2bo$85b2ob2o3bo7bo$
86b5o3bo6bo6b2o$87bo3b3o7bo6b2o$97bo2bo$97b2o2$85bo$83b2o$84b2o3$92bo$
90bobo$83bo5bobo11b2o$82b3o3bo2bo11b2o$81bo3bo3bobo$83bo6bobo$80bo5bo
5bo$80bo5bo$81bo3bo$82b3o9$83b2o$83b2o!

In fact, it's a funny kind of and-gate, though that was not my intent. Zero or one glider has no effect. Two produces an MWSS.

Code: Select all

x = 94, y = 91, rule = B3/S23
50bobo$51b2o$51bo19$83b2o$33b2o48b2o$33b2o45b2o6bo3b2o$30b2o6bo3b2o35b
3o5bo3bobo$29b3o5bo3bobo28bo7b2o6b5o$22bo7b2o6b5o27b2ob2o8b2o4b3o$20b
2ob2o8b2o4b3o41b2o$33b2o34bo5bo$19bo5bo$69b2obob2o$19b2obob2o8$72b2o$
22b2o48b2o$22b2o9$obo36bobo47bobo$b2o36b2o48b2o$bo38bo49bo19$33b2o48b
2o$33b2o48b2o$30b2o6bo3b2o36b2o6bo3b2o$29b3o5bo3bobo35b3o5bo3bobo$22bo
7b2o6b5o29bo7b2o6b5o$20b2ob2o8b2o4b3o28b2ob2o8b2o4b3o$33b2o48b2o$19bo
5bo43bo5bo2$19b2obob2o43b2obob2o9$22b2o48b2o$22b2o48b2o!

[pcallahan]

Is there a smaller p120 MWSS anyone knows of than this one? (It uses the component I just posted).

Code: Select all

x = 65, y = 72, rule = B3/S23
43b2o$43b2o2$57b2o$43bo13b2o$42b3o$41bo3bo$43bo$40bo5bo8b2o$40bo5bo$
41bo3bo$42b3o2$54b2o3b2o$55b5o$55b2ob2o$45bo9b2ob2o$56b3o2$45bo$43bobo
$44b2o4$38b2o3b2o14bo$58b3o$39bo3bo7b2o4b5o$40b3o8b2o3bobobobo$40b3o
13b2o3b2o3$38b2o$39bo$33b2ob3o$34bobo15b2o7b2o$34bo13b4o4b2o3bo$23bo8b
obo13b3ob2o2b2o4b3o$21bobo8b2o19bo10bo$12bo7bobo$11b2o6bo2bo$10b2o4b2o
2bobo$2o7b3o4b2o3bobo$2o8b2o4b2o5bo$11b2o$12bo$24bo6bo$25bo4bo$23b3o4b
3o4$15bo$15b4o$5b2o9b4o$5b2o9bo2bo6bo$10bo5b4o5b3o$10bo4b4o5bo3bo$15bo
7bob3obo$24b5o11$25b2o$25b2o!

The jslife collection includes this one. It has a slightly larger bounding box 89x53=4717 > 65x72=4680. But it is skinnier. It also has a larger population and more moving parts.

Code: Select all

x = 89, y = 53, rule = B3/S23
50bo$50bobo$33b2o18b2o$31bo3bo17b2o10bo$25b2o3bo5bo16b2o9b2o$25b2o2b2o
bo3bo8bo4bobo10b2o11b2o$30bo5bo9bo3bo11b3o7bo3b3o$31bo3bo5bo2b3o16b2o
5b4o4b2obo$33b2o29b2o2bo4bo4bo2bo5b2o$65bo2bo3bo5b2obo5b2o$69bob2o3b3o
$30b2o44b2o$32bo$19b2o12bo8b2o9bo$19b2o4bo7bo8b2o7bobo2bobo3bobo$16b2o
5b2o8bo13b2o3b2obo3bo2b2o$8b2o5b3o5bo2b2o4bo14b2o6bo7bo$8b2o6b2o6b5ob
2o23b2obobo$19b2o4bo21bo8bobo$19b2o25bobo11bo$46bo2bo8bo$33bo13bo2bo$
34bo$32b3o12bo2bo$22b2o23b2o$24bo$11b2o12bo$11b2o4bo7bo$8b2o5b2o8bo$2o
5b3o5bo2b2o4bo7b2o7bo5bobo$2o6b2o6b5ob2o8bobo4bobo5b2o$11b2o4bo16bo5b
2o6bo$11b2o21b2o2$25bo11b2o$26bo9bobo$24b3o11bo2$48b2o$48bo$49b3o$31b
2o18bo$31b2o2$20bo$19bobo$7b2o10b2obo8bobo$7b2o10b2ob2o6bo2bo$19b2obo
6b2o10b2o$19bobo5b2o3bo8b2o$20bo8b2o5b2o$30bo2bo4bo$31bobo!

There are other factors that might determine which to use. Does anyone have a p120 MWSS gun that beats both?

[Sokwe]

Is there a smaller p120 MWSS anyone knows of than this one?

Code: Select all

x = 65, y = 72, rule = B3/S23
43b2o$43b2o2$57b2o$43bo13b2o$42b3o$41bo3bo$43bo$40bo5bo8b2o$40bo5bo$
41bo3bo$42b3o2$54b2o3b2o$55b5o$55b2ob2o$45bo9b2ob2o$56b3o2$45bo$43bobo
$44b2o4$38b2o3b2o14bo$58b3o$39bo3bo7b2o4b5o$40b3o8b2o3bobobobo$40b3o
13b2o3b2o3$38b2o$39bo$33b2ob3o$34bobo15b2o7b2o$34bo13b4o4b2o3bo$23bo8b
obo13b3ob2o2b2o4b3o$21bobo8b2o19bo10bo$12bo7bobo$11b2o6bo2bo$10b2o4b2o
2bobo$2o7b3o4b2o3bobo$2o8b2o4b2o5bo$11b2o$12bo$24bo6bo$25bo4bo$23b3o4b
3o4$15bo$15b4o$5b2o9b4o$5b2o9bo2bo6bo$10bo5b4o5b3o$10bo4b4o5bo3bo$15bo
7bob3obo$24b5o11$25b2o$25b2o!

Can it not be made smaller with Michael Simkin's small p120 gun?

[dvgrn]

Is there a smaller p120 MWSS anyone knows of than this one?...

Can it not be made smaller with Michael Simkin's small p120 gun?

Yup, that does cut it down quite a bit:

Code: Select all

x = 65, y = 61, rule = LifeHistory
52.3B.2A.A$51.5BA.2A$50.5B$50.4B$49.4B$48.4B.3B.B2.4B$41.18B.4B$40.3B
3A10B2A5B2A$40.3B2AB2A8B2A5B2A$40.3B2AB2A14B.B$38.7B2A12B2AB$37.13B2.
7B2A$37.10B6.8B$38.7B7.7B$36.8B6.10B$36.2A7B2.13B$35.B2A21B$33.B.22B$
32.2A5B2A16B$32.2A5B2A16B$33.4B.18B$33.4B2.B.3B.4B$44.4B$43.4B$34.2A
6.4B$34.A6.4B$22.3B2AB3.BA.A5.ABAB$20.4BABA3B.B2A5.B2AB$3.B4.BABA2B.B
2.5BA8B6.3BA$.3BA4BA2BA10BA2BA5B5.4B$.4B2A5B2A5B.3BA7B5.4B$2A8BA3B2A
8BABA3B5.4B$2AB.8B2A11B2AB6.4B$.B4.3BA2BA8BAB10.4B$8.BABA2B3.5B2A8.4B
$21.2A2B.4B.5B.B.B.B.B.B.B.B.B.B.B.B.A$22.35BA3BA$23.39BA$24.33BA4BA$
25.33B5A$26.35B$13.A5B6.3B.2B.B.B.B.B.B.B.B.B.B.B.B.B.B.B$6.B4.4A6B4.
4B$5.2AB.BABAB2A7B.5B$5.2A2BA2BAB3A12B$6.4BABAB2A13B$6.5B4A14B$8.B4.A
5B4.3BA3B$23.2B3A2B$23.B5AB$23.ABABABA$23.2A3B2A$23.7B$24.5B$24.2BA2B
$25.ABAB$25.ABAB$26.A3B$25.2A2B$24.B2A2B$25.2A!

But here's a smaller one by David Eppstein from the previous millennium (if you count 2000 as the last year of the thousand years, like you're officially supposed to):

Code: Select all

#C p120 MWSS gun
#C David Eppstein, 5 March 2000
x = 56, y = 52, rule = B3/S23
21b2o$21bobo$9bo12b3o$6b4o3b2o8b3o6b2o$5b4o3b2o8b3o7b2o$5bo2bo3b2obob
2o2bobo$5b4o4bobob2o2b2o$6b4o3bob2o$9bo4$51b5o$50bo4bo$31bo23bo$2b3o
11b2o12b2o18bo3bo$bo3bo9b3o12bobo19bo$o5bo5bob2o5b2o$o5bo5bo2bo4bo2b2o
22bo$3bo8bob2o4b2ob2o22b3o$bo3bo9b3o3b3o26bo$2b3o11b2o31b2o$3bo18b3o
13b2o$38b2o$21bobobo$2b2o11b2o2b3obob3o$2b2o11bo2bo5bo3bo$9bo6b2obob2o
2b2obo4b2o14b2o3b2o$8b3o6bob2o2b2o2bo6b2o13b2o3b2o$7b5o5bo4bo2b2o6bo
12bo3b5o$6b2o3b2o3b2obobo2bo20b2o4bobo$15bo2b2ob4o20bobo$15b2o3bo30b3o
$10bo9bobo$10bo10b2o3bo$26b2o$6b2o17bobo$7bo42bo$4b3o42bobo$4bo43bo3bo
$10bo7bo30b3o$8bobo5b4o27b2o3b2o$2o4b2o8b2o2bo2b2o$2o4b2o11b2o2b2o$6b
2o7bo10b2o$8bobo4bo10b3o11b2o$10bo4bo10b2o12b2o4b4o$23b2o12b2o6b6o$23b
2o11b3o5bo3b2obo$37b2o6bo5bo$40b2o8bo$40b2o!

... which can be made less square and more exciting by modern technology, but it doesn't actually improve the bounding box:

Code: Select all

x = 72, y = 44, rule = B3/S23
21b2o$21b2o$8bo4bo10b2o$6bobo4bo10b3o5b2o$4b2o7bo10b2o6b2o$4b2o11b2o2b
2o$4b2o8b2o2bo2b2o$6bobo5b4o$8bo7bo4$67b5o$66bo4bo$2b3o66bo$bo3bo10bo
49bo3bo$o5bo6b4o5bo45bo$2obob2o5b4o5b3o$12bo2bo4bob2o$12b4o3b2o2b2o31b
3o$3bo9b4o3b5o30bo3bo$2bobo11bo3b2o2bo13bo15b2obobo$2bobo32b2o15bo4bo$
3bo33bobo12b2ob4ob3o$21b2ob2o25b2obo4bo3bo$2b2o11b2o2b3obob3o22bo3bob
2obobobo$2b2o5bo5bo2bo4bo4bo21bobobob2obo3bo5b2o$8b3o5b2obob2o2b2obo
21bo3bo4bob2o6b2o$7b5o5bobo3b2o2bo23b3ob4ob2o$6bobobobo4bobob2o2b2o27b
o4bo7b4o$6b2o3b2o3b2obo4bo29bobob2o7bo3bo$15bo2b2ob4o29bo3bo10bobo$15b
2o3bo34b3o10b3o$20bobo$21b2o45b3o$53b2o9bo3bo2bo$6b2o44b4o7bobo4b2o$7b
o39bobo2bo2b3o5b2obo$4b3o39bo2bo2b2o9b2ob2o$4bo32b2o6b2o9bo6b2obo$37b
2o4b2o3bo8bo5bobo$45b2o10bo6bo$46bo2bo$47bobo!

If there are other cleverer ways to fit old and new pieces together to get a smaller bounding box, I'm not finding them:

Code: Select all

x = 73, y = 53, rule = LifeHistory
41.B4.B2A3B$5.A.2A.3B26.8BA2BA3B$5.2A.A5B25.5A7BA4B2.B.BABA2B$10.5B
23.A5BA6BA7BA3BA4B$11.4B23.A2B.2A7BA2B.4BA10B$12.4B23.A4.3BA2BA7BA4BA
6B$.A2BA2.B.A2B.4B29.B2A10BA10B$.3BA.3BA2B2A10B27.8BA3BA6B.2A$A7BA5BA
10B25.ABA5B2.BABA2B.2BA2.A$2A7BABA2B2A9B24.B2AB4.B10.B3A$.B.3BA2BA3B
2A10B23.3BA4.4B8.B$3.A2BA4B3A13B20.4B5.3A3B7.3A$4.2A7B2.13B18.4B4.BA
3BA3B7.A.A$4.8B6.10B17.4B5.BABAB2AB.B4.A3.A$6.7B7.7B17.4B4.2B.AB.2BA.
3B3.4A$5.10B6.8B14.4B5.3A.4A.2A2B$5.13B2.7B2A13.4B4.BA3BA4.AB2A2B4.2A
$6.21B2AB11.4B4.2BABA.A.2A.A3BAB4.2A$8.22B.B8.4B6.BA3BA.2A.A.ABA2B$8.
16B2A5B2A6.4B7.2B2ABA4.A3BAB$8.16B2A5B2A5.4B9.2B2A.4A.3A$9.18B.4B5.4B
10.3B.A2B.BA.2B$16.4B.3B.B2.4B4.4B12.B.B2ABABAB$17.BABA14.ABAB14.3BA
3BAB$18.B2AB12.B2AB16.3B3A$19.A3B8.B.3BA19.4B$20.4B8.4B22.B$21.4B.4B.
5B.B.B.B.B.B.B.B.B.B.B.3B.B.B.B.B.A.B$22.45BA3BAB$23.49BA$24.43BA4BA$
25.43B5A$26.47B$13.3B2AB6.6B.B.B.B.B.B.B.B.B.B.B.B.B.B.B.B.B.B.B.B.B.
B$6.B4.3BA2BA3B4.2A2B$5.2AB.4BA7B2A.3BAB$5.2A6BA6BA6BAB$6.7BA7B6A2B$
6.8BA2BA11B$8.B4.3B2AB4.7B$23.7B$23.2A3B2A$23.B5AB$23.B2AB2AB$23.B2AB
2AB$24.B3AB$24.5B$25.4B$25.4B$26.4B$25.4B$24.B2A2B$25.2A!

Code: Select all

x = 55, y = 60, rule = LifeHistory
7.2A3.2A$7.A.A.A2.A.2A$9.A.2A.A.2A$4.4B2A.A2.A$4.7B2.2A$3.6B$3.5B10.B
$2.7B7.BA2B$2.7B5.B2A3B22.B2A.2A.A$2.7B4.B3A4BA19.BABABA.2A$2.2B3A2B
3.B.B2A2BA2B18.3BAB$2.BA3BAB2.BAB.2BA.2B.BA16.4B$2.A5BA2.3AB.4A.3B15.
4B$3.A3BA2.B3ABA4.ABA3B12.4B.3B.B2.4B$2.2B3AB2.A3B2A.2A.A.5B4.18B.4B$
3.B3A7B.A.2A.2A3BA4.16B2A5B2A$3.6B.3BABA4.AB3AB4.16B2A5B2A$2.7B3.3B.
4A.B3A5.22B.B$2.2B.4B3.AB.2B.A2B.BAB3.21B2AB$.8B5.2BA2B2AB.B3.13B2.7B
2A$.B3A5B4.A4B3AB3.11B6.8B$B2AB2A3BAB5.3B2AB4.9B7.7B$B2AB2AB.2B2A4.2B
AB6.8B6.10B$B5AB2.2A2B4.B7.B2A7B2.2B3AB3A4B$2A3B2A3.4B11.B2A10B4ABA2B
A2B$7B4.4B8.B.12BABA7B$7B5.4B6.2A5B2A15BA$.5B7.4B5.2A5B2A8B3A5B$.5B8.
4B5.4B.12B2A2B2A$.2A2B10.4B4.4B2.B.3B.4B$.4B11.4B14.4B$4B13.4B12.4B$.
4B13.4B8.B.4B$.2B2AB13.4B8.4B$3.2A15.4B.4B.5B.B.B.B.B.B.B.B.B.B.B$21.
34B$22.2BA25B5A$23.2B2A22BA4BA$24.2A28BA$25.24BA3BAB$12.4B2A6.6B.B.B.
B.B.B.B.B.B.B.B.A.B$5.B4.5BA3BA4.BA2B$4.2AB.6BA5BAB.BABAB$4.2A8BA3BAB
2A2BABAB$5.9BA5BA4BA2B$5.10BA3BA8B$7.B4.4B2A4.7B$22.2A3B2A$22.A5BA$
22.7B$22.BA3BAB$22.2B3A2B$23.5B$23.5B$24.4B$24.4B$25.4B$24.4B$23.B2A
2B$24.2A!

EDIT: Hmm, I wasn't trying very hard, obviously. Silly of me to even try using that p60, anyway, when a p30 works just as well with Paul's mechanism.