Thread For Your Useless Discoveries

[squareroot12621]

I tried messing around with Game of Life Fun's newest p48 block puffer, and got a LWSS and a trans-block on carrier. And a temporary up-boat on carrier via boat-bit.

Code: Select all

x = 124, y = 59, rule = LifeHistory
74.2D$74.D$76.D$75.2D2$75.2D$74.D.D$75.D10$2.2D$.4D$2D.2D$.2D8$2.2D$2.
D2.D.2D$4.2D.2D9$109.3A3.3A$103.3A2.A2.A3.A2.A$102.A2.A5.A3.A$105.A5.
A3.A$101.A3.A4.A5.A.A$105.A3.A$102.A.A4$107.A6.A$106.A.A4.A$106.A.A3.
3A$107.A11.3A$119.A2.A$119.A$119.A3.A$119.A3.A$119.A$120.A.A!

[KtT]

Very long snake can act as 180-degree turner. known?

Code: Select all

x = 11, y = 8, rule = B3/S23
obo$b2o$bo2$5b2o$5bobo$8bobo$9b2o!

EDIT:it is known.

[bluemanofgrapes]

A 180 degree reflector using a block and eater 1, I want to name it the Kaput .

Code: Select all

x = 0, y = 0, rule = B3/S23
7$7bobo$8b2o3b2o$8bo4bo$14b3o$8b2o6bo$8b2o!

[Sokwe]

A 180 degree reflector using a block and eater 1, I want to name it the Kaput .

Code: Select all

x = 0, y = 0, rule = B3/S23
7$7bobo$8b2o3b2o$8bo4bo$14b3o$8b2o6bo$8b2o!

This reaction is the basis for some low-period 180-degree reflectors found by Noam Elkies in October and November of 2007. From jslife/misc/reflectors-180-2.lif:

Code: Select all

#C Two closely related fast 180-degree reflection reactions,
#C shown at various periods.
#C Noam Elkies, 4 Oct 07 - 15 Nov 07.
x = 215, y = 135, rule = B3/S23
13bo3bo27bobobo29bobobo33bobobo38bo3bobobo25bobobo3bobobo2$13bo3bo27bo
37bo33bo3bo38bo3bo33bo7bo2$13bobobo27bobobo33bo33bobobo38bo3bobobo25bo
bobo3bobobo2$17bo27bo3bo33bo33bo3bo38bo7bo25bo7bo2$17bo27bobobo33bo33b
obobo38bo3bobobo25bobobo3bobobo5$43b2o5b2o$43b2o5b2o2$41b6ob6o$42bo2b
2ob2o2bo$40bo5bobo5bo$40b2o11b2o2$45b5o$46bobo$46bobo$45bobobo$45bo3bo
2$45bobobo$41b2o2b2ob2o2b2o$40bo2bob2ob2obo2bo$40bobo2b2ob2o2bobo$39b
2o2b3o3b3o2b2o$39bo2bo9bo2bo$40b2obobo3bobob2o$41bobobo3bobobo$40bo2bo
7bo2bo$41b2o9b2o$45b2ob2o$41b2obobobobob2o$39bo2b3o2bo2b3o2bo$39b2o13b
2o$45bo3bo33b2o79bo$44b2obob2o26b2o5b3o76bobo43b2o$42b2o3bo3b2o23bo2bo
2bo4bo27b2ob2obo40bo3bo25bo16bo$42b2obo3bob2o23bobo2bob4obob2o22b2o2b
2ob2o39bo3bo24b3o13bobo$41b2o2b2ob2o2b2o21b2o2b3obo4bobo31bo39bo3bo23b
3obo7b2o3b2o$41b3o2bobo2b3o22bobo3bo2bo2bobo23b2o46bo3bo22b3o2bo6b4o$
46bobo27bob2ob2o2bob2ob2ob2o19b2o5b2o39bo3bo23b4o6bo2b3o$41bobo2b3o2bo
bo20bob2o5b2o4bo4bo26b2o39bo3bo19b2o3b2o7bob3o$41bo3bo3bo3bo19bobo3bob
2o2b3obob3o20bo48bobo19bobo13b3o$43bo7bo21bo2bob2obo2bo2b2ob2o22b2ob2o
2b2o41bo20bo16bo$43bo7bo22b2o7b2o30bob2ob2o62b2o2$47bo4$41b2o2b2o36b2o
2b2o26b2o2b2o37b2o2b2o33b2o2b2o$41b2o2b2o36b2o2b2o26b2o2b2o37b2o2b2o
33b2o2b2o$51b2o40b2o30b2o41b2o37b2o$51bobo39bobo29bobo40bobo36bobo$51b
o41bo31bo42bo38bo$44bo70b2o$43bobo26b2o7b2o28b2o4b4o61b2o$43b2o2bobo
21bo2bob2obo2bo2b5o21b2o2b2ob3o41bo20bo15b3o$41b2o2bo2b2o21bobo3bob2o
2b3obob3o23bo45b3o19bobo16bo$42bobo27bob2obo3b2o4bo4bo67b2ob2o19b2o2bo
2bo6bo4bo$42bob6o24bob2ob2o2b4ob2ob2o66b3ob3o21bo3bo6bo4bo$43bo5bo24bo
bo4b2obobobo70b3ob3o21bo4bo6bo3bo$44b3o26b2ob4obo2bobobo70b3ob3o21bo4b
o6bo2bo2b2o$46bo27bobo2bob4obob2o69b3ob3o22bo16bobo$74bo2bo2bo4bo74b2o
b2o24b3o15bo$75b2o5b3o76b3o43b2o$81b2o79bo10$76b2o40b2o30b2o41b2o$76bo
bo39bobo29bobo40bobo$78bo41bo31bo42bo$78b2o40b2o30b2o41b2o5$19bo$19b3o
bo2b2o177bo$22b2o3bo177b3o$19b2o3b3o181bo$19bob2obo182b2o$23bo4b2o$22b
2o3bobo180bo$18b2ob2o4bo181b3o$17bobo2bo3b2o15b2o163b5o$18bo3bo15b2o2b
obo163b2ob3o$22bo14b3o2bo166bo2bo$22bo10b2o5b3o167b2o$23bobo6bo2bob2ob
o2b2o$10b2o2b2o9bo3bo2b2obo2bob2obo$10b2o2b2o10b5ob2o2bobobo2bo80bo$
20b2o5b2o4bobo2bo2b2o81b3obo2b2o$20bobo7bo2bobob2o88b2o3bo$20bo9bo2bob
obo86b2o3b3o76b2o$35bo3bo84bob2obo77bo2bo$34b2o2b2o88bo4b2o71b3ob2o$
11b7o109b2o3bobo72b5o$9bob3ob3obo103b2ob2o4bo75b3o$122bobo2bo3b2o15b2o
59bo$8bo3b2ob2o3bo102bo3bo15b2o2bobo$6b2obo2bo3bo2bob2o104bo14b3o2bo
63b2o$9b2obo3bob2o107bo10b2o5b3o63bo$4bobo3b2o5b2o3bobo103bobo6bo2bob
2obo2b2o62b3o$4bo3bo11bo3bo90b2o2b2o9bo3bo2b2obo2bob2obo48b2o2b2o11bo$
6bo3b2o5b2o3bo92b2o2b2o10b5ob2o2bobobo2bo48b2o2b2o$3b2obobobo7bobobob
2o99b2o5b2o4bobo2bo2b2o59b2o$bo2b2ob2o2b3ob3o2b2ob2o2bo97bobo7bo2bobob
2o63bobo$o2b2o4b2o2bobo2b2o4b2o2bo96bo9bo2bobobo64bo$o2bo4bo2bo5bo2bo
4bo2bo86b2o23bo3bo$b2ob6obobobobob6ob2o83b2o4b4o18b2o2b2o37b2o$3bobo2b
o3b2ob2o3bo2bobo85b2o2b2ob3o62bo15b3o$3bo10bo10bo89bo67bobo16bo$4b2ob
6o3b6ob2o159b2o2bo2bo6bo4bo$5b3o5b3o5b3o163bo3bo6bo4bo$2b3o3b2ob2o3b2o
b2o3b3o160bo4bo6bo3bo$bo3b2o3bo3bo3bo3b2o3bo159bo4bo6bo2bo2b2o$2b3o3bo
bob5obobo3b3o161bo16bobo$5b2o2bo9bo2b2o165b3o15bo$4bo2bobobob3obobobo
2bo182b2o$4b2o2b2ob2obob2ob2o2b2o!

Notice that there are two different types of reflectors here. On May 24, 2015, Michael Simkin found a way to improve the second type of reflector, giving some new periods.

[JP21]

The discussion above reminded me about the useless p4 180° reflector reduction I found a year ago.

Code: Select all

x = 59, y = 33, rule = B3/S23
51b2ob2o$50bobobobo$50bobo3b3o$48b2o2bo$49bobo$49bob7o$45b2ob2o4b2o$
40b2o3bo4b2obo$39bobo4b3o4bo$39bo8bobo$36b2obo9bo2b2o$36b2obobob6obo$
39bobo7bo$13b2o4bo19bobo$13b2o3bobo19bo3bo3bo$19bo3$6b2o2b2o29b2o2b2o$
o5b2o2b2o23bo5b2o2b2o$3o13b2o17b3o13b2o$3bo12bobo19bo12bobo$2b2o12bo
20b2o12bo$3b2o33b2o$4b3o6bo25b3o6bo$3bo2bob5obo23bo2bob5obo$b3obo3b3o
2b3o19b3obo3b3o2b3o$o4bobo2bo2bo3bo17bo4bobo2bo2bo3bo$2o3bo2bo2bo3bo2b
o16b2o3bo2bo2bo3bo2bo$6b2o4b2ob2obo22b2o4b2ob2obo$14bo2bo31bo2bo$14bob
o32bobo$15bo34bo!

[bluemanofgrapes]

This reaction utilizes a Glider to Pi and an eater to make a beehive, I have no clue as to how it could be used.

Code: Select all

x = 21, y = 20, rule = B3/S23
4$13bo$12bo$12b3o3$5b2o$5b2o2$14b2o$14bobo$16bo$16b2o!

[Gustone]

same burner, same wick, different spacing

Code: Select all

x = 100, y = 153, rule = B3/S23
5bo22bo65bo$4bobo20bobo63bobo$4bobo20bobo63bobo$5bo22bo65bo2$2o7b2o12b
2o7b2o55b2o7b2o$2o7b2o12b2o7b2o55b2o7b2o2$5bo$4bobo21bo65bo$4bobo20bob
o63bobo$5bo21bobo63bobo$28bo65bo$2o7b2o$2o7b2o12b2o7b2o55b2o7b2o$23b2o
7b2o55b2o7b2o$5bo$4bobo$4bobo21bo65bo$5bo21bobo63bobo$27bobo63bobo$2o
7b2o17bo65bo$2o7b2o$23b2o7b2o55b2o7b2o$5bo17b2o7b2o55b2o7b2o$4bobo$4bo
bo$5bo22bo65bo$27bobo63bobo$2o7b2o16bobo63bobo$2o7b2o17bo65bo2$5bo17b
2o7b2o55b2o7b2o$4bobo16b2o7b2o55b2o7b2o$4bobo$5bo$28bo65bo$2o7b2o16bob
o63bobo$2o7b2o16bobo63bobo$28bo65bo$5bo$4bobo16b2o7b2o55b2o7b2o$4bobo
16b2o7b2o55b2o7b2o$5bo2$2o7b2o17bo65bo$2o7b2o16bobo63bobo$27bobo63bobo
$5bo22bo65bo$4bobo$4bobo16b2o7b2o55b2o7b2o$5bo17b2o7b2o55b2o7b2o2$2o7b
2o$2o7b2o17bo65bo$27bobo63bobo$5bo21bobo63bobo$4bobo21bo65bo$4bobo$5bo
17b2o7b2o55b2o7b2o$23b2o7b2o55b2o7b2o$2o7b2o$2o7b2o$28bo65bo$5bo21bobo
63bobo$4bobo20bobo63bobo$4bobo21bo65bo$5bo$23b2o7b2o55b2o7b2o$2o7b2o
12b2o7b2o55b2o7b2o$2o7b2o2$5bo22bo65bo$4bobo20bobo63bobo$4bobo20bobo
63bobo$5bo22bo65bo2$2o7b2o12b2o7b2o55b2o7b2o$2o7b2o12b2o7b2o55b2o7b2o
2$5bo$4bobo21bo65bo$4bobo20bobo63bobo$5bo21bobo63bobo$28bo65bo$2o7b2o$
2o7b2o12b2o7b2o55b2o7b2o$23b2o7b2o55b2o7b2o$5bo$4bobo$4bobo21bo65bo$5b
o21bobo63bobo$27bobo63bobo$2o7b2o17bo65bo$2o7b2o$23b2o7b2o55b2o7b2o$5b
o17b2o7b2o55b2o7b2o$4bobo$4bobo$5bo22bo65bo$27bobo63bobo$2o7b2o16bobo
63bobo$2o7b2o17bo65bo2$5bo17b2o7b2o55b2o7b2o$4bobo16b2o7b2o55b2o7b2o$
4bobo$5bo$28bo65bo$2o7b2o16bobo63bobo$2o7b2o16bobo63bobo$28bo65bo$5bo$
4bobo16b2o7b2o55b2o7b2o$4bobo16b2o7b2o55b2o7b2o$5bo2$2o7b2o17bo65bo$2o
7b2o16bobo63bobo$27bobo63bobo$5bo22bo65bo$4bobo$4bobo16b2o7b2o55b2o7b
2o$5bo17b2o7b2o55b2o7b2o2$2o7b2o$2o7b2o17bo65bo$27bobo63bobo$5bo21bobo
63bobo$4bobo21bo65bo$4bobo$5bo17b2o7b2o55b2o7b2o$23b2o7b2o55b2o7b2o$2o
7b2o$2o7b2o$28bo65bo$5bo21bobo63bobo$4bobo20bobo63bobo$4bobo21bo65bo$
5bo$23b2o7b2o55b2o7b2o$2o7b2o12b2o7b2o55b2o7b2o$2o2b3o2b2o16b3o63b3o$
3bo3bo18bo3bo$3bo3bo18bo3bo63bo$3bo3bo18bo3bo62bobo$4b3o20b3o63bobo$
94bo$4b3o20b3o$3bo3bo18bo3bo$3bo3bo18bo3bo$3bo3bo18bo3bo$4b3o20b3o!

[confocaloid]

Two gliders can hit a three-block formation in a "slow" fashion, and the original constellation is restored:

Code: Select all

x = 32, y = 31, rule = B3/S23
bo$2bo$3o3$15b2o$15b2o5$2b2o$2b2o5b2o$9b2o15$29b3o$29bo$30bo!

This is a closed chain of "non-trivial shuffles". Definitions:

• A shuffle is when a single glider hits some stationary pattern from any direction so that the census of the final pattern after the collision settles is the same as the census of the original pattern.
• A trivial shuffle is a shuffle that only involves one object (e.g. block pull, loaf pull, blinker pull).
• A non-trivial shuffle is a shuffle that involves at least two different objects.

Is there a closed chain of non-trivial shuffles involving three transparent blocks?
Is there a closed chain of non-trivial shuffles with just two blocks?

[KtT]

Blinker puffer 1 stopper and blinker puffer 2 stopper:

Code: Select all

x = 91, y = 75, rule = B3/S23
9b2o$10bo$10bobo72bo$11b2o70bo3bo$82bo$82bo4bo$8b2o72b5o$9bo$9bobo$10b
2o$83b2o$82b2ob3o$83b4o$84b2o2$87b2o$3b2o80bo4bo$2bo2bo78bo$2bo2bo78b
o5bo$3b2o79b6o3$4b2o$4b2o27$85b3o$84b5o$83b2ob3o$84b2o$2o$bo$bobo77bo
bo$2b2o70bo5bo2bo$73b5o3bobo$72b2o3b2ob2o$73bo7bo$74b2o2bo2bo$82bo$74b
2o2bo2bo$73bo7bo$72b2o3b2ob2o$73b5o3bobo$2b2o70bo5bo2bo$bobo77bobo$bo
$2o$84b2o$83b2ob3o$84b5o$85b3o!

Note that blinker puffer 2 stopper works as x66 eater.

[hotcrystal0]

A 180 degree reflector using a block and eater 1, I want to name it the Kaput .

Code: Select all

x = 0, y = 0, rule = B3/S23
7$7bobo$8b2o3b2o$8bo4bo$14b3o$8b2o6bo$8b2o!

This reaction is the basis for some low-period 180-degree reflectors found by Noam Elkies in October and November of 2007. From jslife/misc/reflectors-180-2.lif:

Code: Select all

#C Two closely related fast 180-degree reflection reactions,
#C shown at various periods.
#C Noam Elkies, 4 Oct 07 - 15 Nov 07.
x = 215, y = 135, rule = B3/S23
13bo3bo27bobobo29bobobo33bobobo38bo3bobobo25bobobo3bobobo2$13bo3bo27bo
37bo33bo3bo38bo3bo33bo7bo2$13bobobo27bobobo33bo33bobobo38bo3bobobo25bo
bobo3bobobo2$17bo27bo3bo33bo33bo3bo38bo7bo25bo7bo2$17bo27bobobo33bo33b
obobo38bo3bobobo25bobobo3bobobo5$43b2o5b2o$43b2o5b2o2$41b6ob6o$42bo2b
2ob2o2bo$40bo5bobo5bo$40b2o11b2o2$45b5o$46bobo$46bobo$45bobobo$45bo3bo
2$45bobobo$41b2o2b2ob2o2b2o$40bo2bob2ob2obo2bo$40bobo2b2ob2o2bobo$39b
2o2b3o3b3o2b2o$39bo2bo9bo2bo$40b2obobo3bobob2o$41bobobo3bobobo$40bo2bo
7bo2bo$41b2o9b2o$45b2ob2o$41b2obobobobob2o$39bo2b3o2bo2b3o2bo$39b2o13b
2o$45bo3bo33b2o79bo$44b2obob2o26b2o5b3o76bobo43b2o$42b2o3bo3b2o23bo2bo
2bo4bo27b2ob2obo40bo3bo25bo16bo$42b2obo3bob2o23bobo2bob4obob2o22b2o2b
2ob2o39bo3bo24b3o13bobo$41b2o2b2ob2o2b2o21b2o2b3obo4bobo31bo39bo3bo23b
3obo7b2o3b2o$41b3o2bobo2b3o22bobo3bo2bo2bobo23b2o46bo3bo22b3o2bo6b4o$
46bobo27bob2ob2o2bob2ob2ob2o19b2o5b2o39bo3bo23b4o6bo2b3o$41bobo2b3o2bo
bo20bob2o5b2o4bo4bo26b2o39bo3bo19b2o3b2o7bob3o$41bo3bo3bo3bo19bobo3bob
2o2b3obob3o20bo48bobo19bobo13b3o$43bo7bo21bo2bob2obo2bo2b2ob2o22b2ob2o
2b2o41bo20bo16bo$43bo7bo22b2o7b2o30bob2ob2o62b2o2$47bo4$41b2o2b2o36b2o
2b2o26b2o2b2o37b2o2b2o33b2o2b2o$41b2o2b2o36b2o2b2o26b2o2b2o37b2o2b2o
33b2o2b2o$51b2o40b2o30b2o41b2o37b2o$51bobo39bobo29bobo40bobo36bobo$51b
o41bo31bo42bo38bo$44bo70b2o$43bobo26b2o7b2o28b2o4b4o61b2o$43b2o2bobo
21bo2bob2obo2bo2b5o21b2o2b2ob3o41bo20bo15b3o$41b2o2bo2b2o21bobo3bob2o
2b3obob3o23bo45b3o19bobo16bo$42bobo27bob2obo3b2o4bo4bo67b2ob2o19b2o2bo
2bo6bo4bo$42bob6o24bob2ob2o2b4ob2ob2o66b3ob3o21bo3bo6bo4bo$43bo5bo24bo
bo4b2obobobo70b3ob3o21bo4bo6bo3bo$44b3o26b2ob4obo2bobobo70b3ob3o21bo4b
o6bo2bo2b2o$46bo27bobo2bob4obob2o69b3ob3o22bo16bobo$74bo2bo2bo4bo74b2o
b2o24b3o15bo$75b2o5b3o76b3o43b2o$81b2o79bo10$76b2o40b2o30b2o41b2o$76bo
bo39bobo29bobo40bobo$78bo41bo31bo42bo$78b2o40b2o30b2o41b2o5$19bo$19b3o
bo2b2o177bo$22b2o3bo177b3o$19b2o3b3o181bo$19bob2obo182b2o$23bo4b2o$22b
2o3bobo180bo$18b2ob2o4bo181b3o$17bobo2bo3b2o15b2o163b5o$18bo3bo15b2o2b
obo163b2ob3o$22bo14b3o2bo166bo2bo$22bo10b2o5b3o167b2o$23bobo6bo2bob2ob
o2b2o$10b2o2b2o9bo3bo2b2obo2bob2obo$10b2o2b2o10b5ob2o2bobobo2bo80bo$
20b2o5b2o4bobo2bo2b2o81b3obo2b2o$20bobo7bo2bobob2o88b2o3bo$20bo9bo2bob
obo86b2o3b3o76b2o$35bo3bo84bob2obo77bo2bo$34b2o2b2o88bo4b2o71b3ob2o$
11b7o109b2o3bobo72b5o$9bob3ob3obo103b2ob2o4bo75b3o$122bobo2bo3b2o15b2o
59bo$8bo3b2ob2o3bo102bo3bo15b2o2bobo$6b2obo2bo3bo2bob2o104bo14b3o2bo
63b2o$9b2obo3bob2o107bo10b2o5b3o63bo$4bobo3b2o5b2o3bobo103bobo6bo2bob
2obo2b2o62b3o$4bo3bo11bo3bo90b2o2b2o9bo3bo2b2obo2bob2obo48b2o2b2o11bo$
6bo3b2o5b2o3bo92b2o2b2o10b5ob2o2bobobo2bo48b2o2b2o$3b2obobobo7bobobob
2o99b2o5b2o4bobo2bo2b2o59b2o$bo2b2ob2o2b3ob3o2b2ob2o2bo97bobo7bo2bobob
2o63bobo$o2b2o4b2o2bobo2b2o4b2o2bo96bo9bo2bobobo64bo$o2bo4bo2bo5bo2bo
4bo2bo86b2o23bo3bo$b2ob6obobobobob6ob2o83b2o4b4o18b2o2b2o37b2o$3bobo2b
o3b2ob2o3bo2bobo85b2o2b2ob3o62bo15b3o$3bo10bo10bo89bo67bobo16bo$4b2ob
6o3b6ob2o159b2o2bo2bo6bo4bo$5b3o5b3o5b3o163bo3bo6bo4bo$2b3o3b2ob2o3b2o
b2o3b3o160bo4bo6bo3bo$bo3b2o3bo3bo3bo3b2o3bo159bo4bo6bo2bo2b2o$2b3o3bo
bob5obobo3b3o161bo16bobo$5b2o2bo9bo2b2o165b3o15bo$4bo2bobobob3obobobo
2bo182b2o$4b2o2b2ob2obob2ob2o2b2o!

Notice that there are two different types of reflectors here. On May 24, 2015, Michael Simkin found a way to improve the second type of reflector, giving some new periods.

the P6 can be reduced:

Code: Select all

x = 25, y = 43, rule = B3/S23
3$13bo$11b3o$10bo7b2o$10bo2b3obo2bo$7b2obobo2bob2o2bo$7bo2bo2b2o4b2o$
9bo4b5o$10b4obo2bo$12bobo2bo$8b3o4bob4o$7bo2b4o2bo4bo$8bo4bob2ob3o$9b
3obo2bobo$11bo6bo$17bo$12bo$14bo4$8b2o2b2o$8b2o2b2o$18b2o$18bobo$18bo
$11bo$10bobo$10b2o2bobo$8b2o2bo2b2o$9bobo$9bob6o$10bo5bo$11b3o$13bo!

[bluemanofgrapes]

One time duplicator:

Code: Select all

x = 16, y = 18, rule = B3/S23
$8b2o$8b2o3$9b2o$8b2o$10bo4$6b2o$6b2o!

[bibunsekibun]

2 Blinkers + 1 Glider = HWSS + Junks

Code: Select all

x = 18, y = 24, rule = B3/S23
o$o$o16$15bobo$15b2o$16bo3$10b3o!

[bluemanofgrapes]

World's most stupid diehard made from gliders:

Code: Select all

x = 611, y = 410, rule = B3/S23
127$367bobo$368b2o$368bo119bo$486b2o$487b2o11$481bo$479b2o$480b2o3$388b
obo$389b2o$389bo24$433bo$433bobo$433b2o$422bobo$423b2o$423bo17$444bo$
443b2o$443bobo$421bo$419b2o$420b2o11$414bo$412b2o$413b2o3$321bobo$322b
2o$322bo9$323bobo$324b2o$324bo13$366bo$366bobo$366b2o$355bobo$356b2o$
356bo10$364bobo$364b2o$358bo6bo$359bo$357b3o2$360b2o$359bobo15bo$361b
o14b2o$376bobo106$238b2o$239b2o$238bo!

[confocaloid]

World's most stupid diehard made from gliders:

Code: Select all

code

Stupider:

Code: Select all

x = 248, y = 249, rule = B3/S23
126bobo$127b2o$127bo119bo$245b2o$246b2o11$240bo$238b2o$239b2o3$147bobo
$148b2o$148bo24$192bo$192bobo$192b2o$181bobo$182b2o$182bo17$203bo$202b
2o$202bobo$180bo$178b2o$179b2o11$173bo$171b2o$172b2o3$80bobo$81b2o$81b
o9$82bobo$83b2o$83bo13$125bo$125bobo$125b2o$114bobo$115b2o$115bo10$
123bobo$123b2o$117bo6bo$118bo$116b3o2$119b2o$118bobo15bo$120bo14b2o$
135bobo73$bo$2bo$3o27$23b3o$23bo$24bo3$26b2o$26bobo$26bo!

[bluemanofgrapes]

Eater 1 and Eater 2 weld I'm naming eater 1.5:

Code: Select all

x = 13, y = 12, rule = B3/S23
12bo$10b2o$2o9b2o$obo$2bo$2bobob2o$3b2ob2o2$3b2ob2o$4bobo$4bobo$5bo!

[hotcrystal0]

I did this to a box containing an anti-eater 1 and it made a cis-bun on bookend:

Code: Select all

x = 29, y = 29, rule = B3/S23
6$6b8o$6b8o$6b8o$6b3o2b3o$6b3obob2o$6b5ob2o$6b5o2bo$6b8o3$8bobo$8b2ob
o$11bo$11b2o!

[KtT]

Two conversions from a fishhook and a beehive into elevener:

Code: Select all

x = 64, y = 26, rule = B3/S23
6$8bo44bo$6bobo44bobo$7b2o44b2o5$11bo39bo$10bobo37bobo$10bobo37bobo$11b
o39bo$14bo39bo$14b3o37b3o$17bo39bo$16b2o38b2o!

[confocaloid]

Two conversions from a fishhook and a beehive into elevener:

Code: Select all

x = 64, y = 26, rule = B3/S23
6$8bo44bo$6bobo44bobo$7b2o44b2o5$11bo39bo$10bobo37bobo$10bobo37bobo$11b
o39bo$14bo39bo$14b3o37b3o$17bo39bo$16b2o38b2o!

It might not be useless, if it happens to be easier to build the constellation and then hit it with one glider.
In terms of glider cost there are cheaper (4G) syntheses, e.g.:

Code: Select all

x = 10, y = 10, rule = B3/S23
2bobo$3b2o$3bo2$b2o$obo$2bo3b2o$7bo$7bobo$8b2o!

[KtT]

I played with z-hexomino and other sparks yesterday and I got some useless reactions.
Twin bees shuttle spark and z-hexomino reactions:

Code: Select all

x = 148, y = 11, rule = B3/S23
147bo$144b4o$144bo$12bo$9b4o$9bo$2b2o136b2o$2b2o136b2o$bo2bo134bo2bo$
ob2o134bob2o$ob2o134bob2o!

And I found some pure glider generators using twin bees shuttle spark, line-of-six spark and die hard with z-hexomino:

Code: Select all

x = 73, y = 11, rule = B3/S23
66bo$60b2o$61bo3b3o2$2b2o$2b2o28bo$bo2bo27bo$ob2o4bo23bo3bo$ob2o4b4o20b
o3b4o32bo$11bo20bo6bo29b4o$32bo36bo!

EDIT: 236-generation die hard using two original die hard:

Code: Select all

x = 28, y = 17, rule = B3/S23
26bo$20b2o$21bo3b3o12$3o3bo$6b2o$bo!

[confocaloid]

Eater 1 and Eater 2 weld I'm naming eater 1.5:

Code: Select all

x = 13, y = 12, rule = B3/S23
12bo$10b2o$2o9b2o$obo$2bo$2bobob2o$3b2ob2o2$3b2ob2o$4bobo$4bobo$5bo!

Eater 1.5 constructed in 12 gliders, by a 3G conversion from 9G xs20_wbr0raa4z311:

Code: Select all

x = 169, y = 23, rule = B3/S23
128bo$128bobo$128b2o$124bo$125bo$123b3o$79bo48b2o$73b2o3bo49bobo$41bo
30bobo3b3o47bo30b2o$42bo31bo45bo38bo$6b2o32b3o39bo37b3o37b3o$obo3bobo
36bo35bobobo37bobo37bobo$b2o3bo38b3o34b2ob3o34b2ob3o34b2ob3o$bo46bo24b
2o13bo39bo39bo$45b3o26b2o6b2ob3o34b2ob3o34b2ob3o$45bo27bo8b2obo36b2obo
36b2obo$7b3o30b3o$7bo34bo$8bo32bo116bo$158b2o$43b3o111bobo$43bo$44bo!

Code: Select all

x = 43, y = 44, rule = B3/S23
40bo$40bobo$40b2o$10bo$11bo$9b3o3$30bo$28b2o$29b2o3$12bo$10bobo$11b2o
3$15bo$16bo$14b3o8$31bo$30b2o$30bobo$bo$b2o37b2o$obo37bobo$32b2o6bo$
31b2o$33bo$b2o8b2o$obo7bobo$2bo9bo2$31b2o$31bobo$31bo!

[Period1GliderGun]

p2 U-turner catalyst of dubious usefulness:

Code: Select all

x = 7, y = 19, rule = B3/S23
b3o$b3o$obo$2o8$3bo$2bobo$bobo$3bob2o$2obo$3bobo$2bobo$3bo!

[squareroot12621]

(This is the 44,444ᵗʰ post in Patterns.)
Long barge is the lowest-population still life that can't die from a domino spark:

Code: Select all

x = 67, y = 35, rule = B3/S23
2b2o2b2o2b2o12b2o8b2o6b2ob2o10b2o$39b2o14bo$2o4bo4b2o10b2o8b2o4bo2bo4b
2obo3bobo$2o3bobo2bobo10bobo6bo2bo5b2o4bob2o4bobo$6bo4bo12b2o7b2o21bo
9$2o4b2o2b2o3b2o15b2o$3bo5bo2bo5b2o$b3o5bobo5bobo10b2o$o9bo5bobo11bob
obo$2o15bo15b2o11$2o24b2o3b2o9b2o7b2o3b2o3b2o$17bo$b2o5bo5bo2bo6b2o6b
obo5b2o7b2o6bo4b2o$o2bo3bobo3bobo8bobo5b2obo4bobo6bobo4bobo3bo2b2o$o2b
o4bobo3bobo8bobo7bo7bobo6bo3bo2bo3b2obo$b2o6bobo4bo9b2o7b2o7b2o7bo3bo
bo$10bo5b2o34b2o4bo!

[JP21]

(Just trying to make the post above a lot clearer.)
Long barge is the lowest-population still life that can't be destroyed with a domino spark without leaving leftover debris:

Code: Select all

x = 113, y = 7, rule = B3/S23
2o6b2o9b2o7b2o$44b2o18b2o$2bo6bo9bo7bo19bo14bo20bo2b2o19bo$bobo4bobo7b
obo5bobo17bobo12bobo18bobo21bobo2b2o$2bobo4bobo7bobo5bobo17bobo12bobo
18bobo21bobo$3bobo4bobo7bobo5bobo17bobo12bobo18bobo21bobo$4bo6bo9bo7bo
19bo14bo20bo23bo!

[squareroot12621]

(Just trying to make the post above a lot clearer.)
Long barge is the lowest-population still life that can't be destroyed with a domino spark without leaving leftover debris:

Code: Select all

x = 113, y = 7, rule = B3/S23
2o6b2o9b2o7b2o$44b2o18b2o$2bo6bo9bo7bo19bo14bo20bo2b2o19bo$bobo4bobo7b
obo5bobo17bobo12bobo18bobo21bobo2b2o$2bobo4bobo7bobo5bobo17bobo12bobo
18bobo21bobo$3bobo4bobo7bobo5bobo17bobo12bobo18bobo21bobo$4bo6bo9bo7bo
19bo14bo20bo23bo!

That doesn't seem to be a lot clearer.
(4,000ᵗʰ reply!)

[bibunsekibun]

27146M

Code: Select all

x = 13, y = 12, rule = B3/S23
bo8b3o$bobo6bo$o2bo6bo$obo$2o5$6b3o$7bo$6bo!