Glider Destruction Of Still Lives, Oscillators, Etc.

[ColorfulGalaxy]

Sorry, what about the pulsar?

Code: Select all

x = 20, y = 20, rule = LifeHistory
4.B5.B$3.2AB3.B2A$3.B2A3.2AB$.A2BABA.ABA2BA$B3AB2A.2AB3AB$.BABABA.ABA
BAB$.2B3AB.B3A2B$4B.2B.2B.4B$.2B3AB.B3A2B$.BABABA.ABABAB$B3AB2A.2AB3A
B$.A2BABA.ABA2BA$3.B2A3.2AB$3.2AB3.B2A$4.B5.B3$17.3C$17.C$18.C!

[ColorfulGalaxy]

The 0E0P metacell self-destructs.
Is it possible to add gliders to make it destruct faster?

Finished the pulsar:

Code: Select all

x = 76, y = 66, rule = LifeHistory
71.C$71.C.C$71.2C18$16.C.C$17.2C$17.C15$36.B5.B$35.2AB3.B2A$35.B2A3.2A
B$33.A2BABA.ABA2BA$32.B3AB2A.2AB3AB$33.BABABA.ABABAB$33.2B3AB.B3A2B$32.
4B.2B.2B.4B$33.2B3AB.B3A2B$33.BABABA.ABABAB$32.B3AB2A.2AB3AB$33.A2BAB
A.ABA2BA$35.B2A3.2AB$35.2AB3.B2A$36.B5.B5$47.3C$47.C$48.C5$50.3C$50.C
$51.C!

Four blocks:

Code: Select all

x = 19, y = 18, rule = LifeHistory
.C$2.C$3C4$6.2A.2A$6.2A.2A2$6.2A.2A$6.2A.2A4$14.3C$14.C$15.C!

BTS or pi-heptomino:

Code: Select all

x = 28, y = 20, rule = LifeHistory
8.2A$8.A2.A$9.3A2$5.2A.A.2A$5.A.2A.A$10.A$10.2A2$20.3C$3C17.C$2.C18.C
$.C!
[[ STOP 26 ]]

CthuIhu in five gliders:

Code: Select all

x = 14, y = 21, rule = LifeHistory
.A3.A3.A$A.A.A.A.A.A$A.A.A.A.A.A$.2A.A.A.2A$4.A.A$4.A.A$3.2A.2A$2.A4.
A$2.2A.2A$3.A.A$2.A2.A$2.A.A$.2A.2A5$11.3C$11.C$12.C!

[Schiaparelliorbust]

The 0E0P metacell self-destructs.
Is it possible to add gliders to make it destruct faster?

Finished the pulsar:

Code: Select all

x = 76, y = 66, rule = LifeHistory
71.C$71.C.C$71.2C18$16.C.C$17.2C$17.C15$36.B5.B$35.2AB3.B2A$35.B2A3.2A
B$33.A2BABA.ABA2BA$32.B3AB2A.2AB3AB$33.BABABA.ABABAB$33.2B3AB.B3A2B$32.
4B.2B.2B.4B$33.2B3AB.B3A2B$33.BABABA.ABABAB$32.B3AB2A.2AB3AB$33.A2BAB
A.ABA2BA$35.B2A3.2AB$35.2AB3.B2A$36.B5.B5$47.3C$47.C$48.C5$50.3C$50.C
$51.C!

Four blocks:

Code: Select all

x = 19, y = 18, rule = LifeHistory
.C$2.C$3C4$6.2A.2A$6.2A.2A2$6.2A.2A$6.2A.2A4$14.3C$14.C$15.C!

BTS or pi-heptomino:

Code: Select all

x = 28, y = 20, rule = LifeHistory
8.2A$8.A2.A$9.3A2$5.2A.A.2A$5.A.2A.A$10.A$10.2A2$20.3C$3C17.C$2.C18.C
$.C!
[[ STOP 26 ]]

Code: Select all

x = 11, y = 13, rule = B3/S23
bo3bo3bo$obobobobobo$obobobobobo$b2obobob2o$4bobo$4bobo$3b2ob2o$2bo4bo
$2b2ob2o$3bobo$2bo2bo$2bobo$b2ob2o!

Let me just say that these are very unoptimized. Within half a minute I found a single glider destruction for the 4 blocks:

Code: Select all

x = 23, y = 20, rule = LifeHistory
2$4.2A.2A$4.2A.2A2$4.2A.2A$4.2A.2A4$16.3C$16.C$17.C!

Instead of destroying the debris that results from a single glider collision, you should try to put the glider in different places in different phases, (and if the object in question is an oscillator) different phases of the object too.
I also found this one that releases an LWSS:

Code: Select all

x = 50, y = 47, rule = LifeHistory
5$20.C$21.2C$20.2C8$30.2A$30.A2.A$31.3A2$27.2A.A.2A$27.A.2A.A$32.A$32.
2A!

[Hdjensofjfnen]

There is a 1G destruction of the BTS, if it hasn't been posted already:

Code: Select all

x = 12, y = 9, rule = LifeHistory
3.2A$3.A2.A$4.3A2$2A.A.2A$A.2A.A$5.A3.A$5.2A2.A.A$9.2A!

[wwei23]

Wait, what?

Code: Select all

x = 17, y = 13, rule = LifeHistory
2B2A13B$2A3BA11B$.5BA3BA6B$2.3A2BA2BA6B$2.5B3A6B$4.13B$4.11BAB$5.9BAB
A$6.7BA2BA$7.5BAB2A$8.3BABA2B$7.3BA2BAB$6.5B2A2B!

[Schiaparelliorbust]

Wait, what?

Code: Select all

x = 17, y = 13, rule = LifeHistory
2B2A13B$2A3BA11B$.5BA3BA6B$2.3A2BA2BA6B$2.5B3A6B$4.13B$4.11BAB$5.9BAB
A$6.7BA2BA$7.5BAB2A$8.3BABA2B$7.3BA2BAB$6.5B2A2B!

It's unusual, but why is it so remarkable? I noticed that mango but didn't notice how it formed. Oh and it came from my "soup".

[wwei23]

It's unusual, but why is it so remarkable?

It's component material!

Code: Select all

x = 15, y = 13, rule = LifeHistory
ABA12B$.2A.11B$.A3.10B$2.2B2ABA.6B$B.3B3A6B$2.4BA8B$2.11BAB$3.9BABA$4.
7BA2BA$.2A2.5BAB2A$.2A3.3BABA2B$5.3BA2BAB$4.5B2A2B!

Oh and it came from my "soup".

Yes it did.

[ColorfulGalaxy]

A reaction that deletes the queen bee from the shuttle, but one of the blocks still works as a catalyst.

Code: Select all

x = 36, y = 19, rule = LifeHistory
8.A$7.A.A$2A4.A.2A10.2A$2A3.2A.2A10.2A$6.A.2A$7.A.A$8.A2$19.3C$19.C$20.
C4$33.3C$33.C$15.3C16.C$15.C$16.C!

Trans version:

Code: Select all

x = 36, y = 19, rule = LifeHistory
8.A$7.A.A$6.A.2A10.2A$2A3.2A.2A10.2A$2A4.A.2A$7.A.A$8.A2$19.3C$19.C$20.
C4$33.3C$33.C$15.3C16.C$15.C$16.C!

[ColorfulGalaxy]

Hi
Have a good day!

BokaBB

Since you might be free now, could you join us?

Half bakery:

Code: Select all

x = 10, y = 12, rule = LifeHistory
4.2A$3.A2.A$3.A.A$.2A.A$A2.A$A.A$.A3$6.3C$6.C$7.C!

[confocaloid]

According to a quick-and-dirty script that combines apgcode-textcensus.py and glider_destruction.py, the following are all strict still lives with up to 16 bits without an 1-glider destruction.
If you manage to find an 1G destruction for any of these, that would mean my script was buggy. There might be some long-lived (> 1000 ticks) 1G destructions that were not detected.

Code: Select all

x = 1747, y = 254, rule = B3/S23
2o28b2o$obo27bobo$bobo29bo$2b2o30bo$33b2o56$2o$obo$bobo$2bobo$3b2o26$b
2o$o2bo$obobo$bo2bo$2b2o26$4b2o28b2o24b2o$3bobo27bobo24bo$3b2o27bobo
26bo$b2o28bobo28bo$obo27bobo30bo$2o28b2o32bo$65bo$66bo$67bo$66b2o21$5b
o29bo28b2o24b2o$4bobo26b3o27bo2bo23bo$4b2o26bo29bo2b2o24bo$2b2o27bobo
27bo30bo$bobo26bobo27bo30b2o$obo27bo29bobo30b2o$2o29bo29b2o30bo2bo$30b
2o63b2o23$6bo23b2o2bo27b2o31b2o30bo22b2o28b2o35b2o21b2o37b2o19b2o$5bob
o22bo3b3o24bobo30bobo29bobo21bobo27bo37bo22bo36bobo19bobo$4bobo24b3o3b
o22bo32bobo30b2o23bobo27bo35bo22bo36bo25bo$4b2o27bo2b2o23b2o2b2o25bobo
29b2o27bo28bo30b2obo23b2o34bo27bo$2b2o59bo2bo24bobo29bobo26bo30bo28bob
2o25bo33bo29bo$bobo59bobo24bobo29bo29bobo27b2o27bo28bo33bo31bo$obo61bo
25b2o29bo31bobo28b2o24bo29b2o31bo33bo$bo118bo33b2o28bo25b2o29bo30bo35b
o$120b2o64bo53bo30bo37bobo$185b2o53b2o28bo39b2o$270b2o20$ob2o29b2o30b
2o31bo24b2o25b2o34b2ob2o27b2o30b2o19b2o27b2o28b2o28b2o35b2o22bo3bo26b
2o32b2o23b2o33b2o$2obo28bo2bobo25bo2bo29b3o25bo25bo34bob2obo28bo31bo
18bo2bob2o23bo29bo29bo35bo2bo20bobobobo24bo2bo30bobo22bo2bo2b2o28bo$4b
2o26b2o2b2o25b2o30bo27bo27bo32bo33bo31bo20bobobo2bo22bo29bo29bo33bo2bo
bo19bobobo2bo22bob2obo28bobo23bobobo2bo26bobo$5bo24b2o29b2o33bo26b2o
27bo30bo30b2obo31bo22bobo2b2o23bobo27bo29bo31bo4b2o20bobo2b2o22bo2bobo
28bo26b2obobo26bobo$4bo26bo28bobo30b3o25b2o30bo28bo30bob2o31bo24bo29b
2o28bo27b2o30bo28bo28bo2bo27b3o30bo27b2o$3bo26bo29bo31bo27bobo31bo26bo
30bo34bo57b2o27bo28b2o25bobo59b2o27bo59b2o$obo27b2o29bo31bo26bo34bo24b
o30bo34bo58bo27b2o28bo2b2o22b2o88bobo57bobo$2o60bo27b3o28bo31bobo24b2o
28bo34bo57bobo29b2o27b2obo112b2o58b2o$61b2o27bo31bo29bobo55b2o32bo58b
2o30bobo$121b2o28bobo89bo92b2o$152bo87bobo$240b2o19$5b2o25bob2o32b2o
20b2o28b2o28b2o28b2o28b2o28b2o30b2o28b2o33b2o31b2o19b2o28b2o35b2o21bo
28b2o7b2o19b2o5bo22b2o28bob2o26bobo27bo29b2o5b2o21b2o32b2ob2o25b2o30b
2o25b2o25b2o29bo29bo3b2o23b2o29b2o28b2o29bo29b2o32b2o29b2o24b2o30bo28b
o29bo25bo2bo33b2o28b2o24b2o30b2o23b2o29b2o28b2o27b2o3b2o23b2o29bo32b2o
30b2o29bo28b2o23b2ob2o$4bobo25b2obo31bobo20bobo27bo29bo29bo29bo29bobo
30bo28bo33bo2bo31bo19bo3bo25bo2bo32bo2bo19bobo27bobo5bobo19bobo3bobo
21bobo27b2obo6b2o18b2obo26b3o27bo6bo22bo32bob2o2bo23bo2bo29bo25bobo26b
o28bobo27bobo2bo24bobo27bo2bo26bobo28bobo28bobo30bob3o26bobo23bo2bo28b
obo26bobo24b2obobo24b4o33bo29bo24bo2bo28bobo24bo29bo29bobob2o23bobobob
o24bo28bobo28b2o2bo29bobo28bobo26bobo22bobobobo$3bo26b2o35bo25bo27bo
29bo29bo29bo31bo28bo30bo31bo2bobo29bo21b4o26b2obo27b2obo2b2o20b2o30bob
2o2bo23bo2bo2bo23bo30b2o3bobo21bo29bo27bo2b2obo24bo29bo5bobo22bobobo
25b2obo25bo28bobo27bo2bo26bobobobo25bo26b2o2bo25bo29bobo27b2o3bobo26bo
5bo25bo24bob2o28bobo28bo26bobo2bo58bobo27bobo23bo2bo29bo25bo31b3o28bob
2o25bobobobo21bo29bo2bo26bob3o29bobo28bobo26bobo23bobobobo$2bo28bo32b
2obo26bo27bo29bo29bo29bo31bo26bo28b3o2bo28bo4bobo27bo54bo27bob2o27b2o
29b2ob2o25bobo3bo23bo31bobo24b2o27b2o28bo2bob2o22b2o28bo7bo22b2o2bo25b
o2bo25b2o29b2o28b2obo27bo2bobo25bo30bo25bo28bo29bo5b2o25bo5b2o23bobo
25bo30bo2b3o22b3o27bo2bobo25b2o30bobo27bobo25b2o27b2obo25bobo32bo27bo
28b2o3b2o22b3o27b3o26bo33b2o28bobo26bobo25b2ob2o$bo28bo32bob2o26b2o28b
ob2o26bo29bo29bo27b3o26bo29bo2b3o27bo6bo27bo23b2o28b2o27bo31bobo59bo3b
2o24bo30b2o26bo27bo30b2o28b2o25bo32bo27bobo27bo32b2o29bo26b2o3bo25b2o
31bo25bo28bo29bo30bo30bobo27b2o26b3o4bo22bo30bobob2o25bo29bobo27bobo
56bob2o25b2o29b3o26bobo59bo57b2o29b2o29bobo27b2o$o29b2o30bo32b2o27b2ob
o26bo27b2o28b2o26bo29b2o30bo27bobo34bo25bo28bo27bo35bo89bo56bo30bo58bo
bo24b2o30bo27bobo30bo30bobo25b3o60b2o30bo2b2o21bo28bo4bo24bo28bo31bo
30bo25bo31b2o29bo27bo30bobo28bo26b4o28bo30b2o26bo28bobo60bob2o26b3o26b
o28bobo29b2o26b2o$4o27bo29bo33bo32bo26bo28b2o28b2o25bo29bo31bo26b2o34b
o25bo30bo26b2o35bo87b2o56bobo27b2o60bo55bo28bo31b2o33bo23bo63bobo30bo
2bo22bo28bo2bobo24bo26bo30bobo29bo26b2o31bo57b2o28bobo27b3o26bo2bo26bo
bo30bo2b2o24bo27b2o62bo2bo25bo2bo23bo29bobo28b2o27bobo$3bo26bo29bo35bo
32bo22b3o29bobo27bo27bo27bo31b2o61bo25bo28b3o65bo88b2o55bobo26bo61bobo
52bo30bo30bo35bo21bobo63bobo30b2o24bo2b2o24bo2bo24b2o26b2o28bobo27bobo
59bo59bo28bo28bo30b2o27b2o32b2obo22bobo92bobo26bobo23b2o28b2o28bobo27b
2o$2bo27b2o28b2o35bobo30bo20bo35bobo25bo24bobo27b2o92bo25bo29bo68bobo
85bo2bo54b2o27b3o59bobo51b2o28b2o28bobo36bo21bo65b2o57bo2bo25b2o83b2o
28b2o59bo58bo29b2o28b2o118b2o94bo28bo85bo$2b2o94b2o29b2o19bobo35b2o26b
o23b2o29bo91bo26b2o98b2o87b2o85bo60bo112b2o36b2o147b2o201bo59b2o$150b
2o65bo52bo91bo867b2o$216b2o52b2o89bo$360bo$360b2o!

Edit: viewtopic.php?p=168031#p168031

[confocaloid]

Crosspost from another thread. I'm not currently planning to go beyond 22 bits.

Edit 2: Assuming no errors, below are two-glider destructions of all strict still lives with 22 or fewer bits, excluding those that can be reduced with one glider to empty space or to a common 1G-destructible target (block, blinker, beehive, boat, tub, ship, pond, loaf or traffic light):

Code: Select all

x = 444, y = 245, rule = B3/S23
60bo$59bo$59b3o9$46bo$45bo$45b3o4$11bo3bo3bo26bo$45bobo$11bo3bo3bo24bo
bo$44b2o$11bo3bobobo22b2o$41bobo$11bo7bo20bobo$41bo$11bo7bo10$25bo$26b
o$24b3o10$11bo3bobobo20bo9b2o$41bo7bobo$11bo3bo3bo19b3o6bo$47bo$11bo3b
obobo26bo$46b2o$11bo3bo3bo24b2o$45bo$11bo3bobobo24bo$43bo$40bobo$40b2o
2$82bo$83bo$81b3o3$148bo$148bobo$148b2o$51bo$52bo$50b3o7$7bobobo3bobob
o24bo35b2o18b2o32bo$43bobo35bo18bobo30bobo$11bo3bo3bo22bobo35bo20b2o
30bobo$41bobo23bo8b2obo23b2o25b2obobobo$7bobobo3bo3bo20bobo25bo6bob2o
24bobo7bo16bobobob2o$40bo25b3o5bo29bobo6bobo16bobo$7bo7bo3bo21bo31bo
31b2o6b2o17bobo$42bo30b2o32b2o24bo6b2o$7bobobo3bobobo23bo30bo32bobo30b
obo$44bo28bo34b2o30bo$45bo24bobo$46bo23b2o$47bo$48bo$47b2o4$46b3o5b3o$
46bo7bo151bo$47bo7bo87bo62bobo$143bobo60b2o$143b2o2$71bo$72bo38bo$70b
3o39bo$110b3o3$7bobobo7bo22b2o26b2o40b2obo18b2o34b2o21b2o$41bobo26bobo
38bo2b2o17bo2bo9bo22bobo20bobo61bo$11bo7bo20bobo30bo37b2o20b2o2bo8bobo
20b2o3b2o15bobo61bo$40bo22bobo8bo34b2o20b2o5bo7b2o19b2o5bobo14bo63b3o$
7bobobo7bo21bo22b2o7b2o33bobo19bobo6bo26bobo5bo15b2o$42bo21bo8bo33bo
22b2o8bo24bo26b2o7bo$7bo11bo23bo30bo31bo34bo22bo27bo2b2o4bobo$44bo30bo
29bo36bo20bo29b2o2bo3b2o$7bobobo7bo25bobo28bo27bo38bo19b2o31bobo$46b2o
29bo25bo38b2o20bo32b2o$48b2o26b2o22bobo60bo146bo$33b3o12bo27bo23b2o58b
obo148bo$35bo5b3o6bo26bo82b2o147b3o$34bo8bo5b2o27bobo$42bo36b2o4$90b3o
84b2o$92bo84bobo$91bo85bo2$143bo$142bo$142b3o34bo$179bobo$179b2o94bo$
275bobo$275b2o$81bo$82bo$80b3o4$280bo37bo$210bo68bo39bo$59bo150bobo66b
3o35b3o$57bobo150b2o17bo66bo$58b2o170bo65bobo$7bobobo3bobobo28bo25b2o
24b2o42b2o3bo14bo26bo6bo29b3o5b2o13b2o28b2o13b2o19b2o30b2o21b2o$36b2o
9bobo23bobo24bo44bo3bobo11bobo24bobo5bobo34bobo14bo27bobo35bo29bobo21b
o$11bo7bo15bobo3bo4bobo23bo28bo33b2o7bo4b2o12bobo25bobo4b2o34bo15bo29b
o34b3o29bobo3bo19bo$37bo2bobo3b2o23bo30bo31bobo6bo17bobob2o26bo39bo16b
2o6b2o21bo32bo32b2o4bobo15bobo$7bobobo3bobobo21bo2b2o24bo30b2o30bo3b2o
3bo17bobo30b2o37bo18bo7bo2bo17b2o20bo10bobo29b2o6b2o15bobo$42b2obo24bo
bo27bo31bo6bobo18bo33bo34bobo18bo7bo3bobo17b2o16bobo9bobo31bo23bo$7bo
7bo28bo26bobo27b2o28bo7b2o20bo6bo24bo35b2o19bobo4bo4b2o18bobo16b2o9bo
31bo26bo$44bobo25bobo28bo26bo29b2o6bobo21bo34b2o22bobo2bo26bobo3b2o20b
2o31b2o26bo$7bobobo3bobobo25bobo25bobo27bo26b2o28bo7b2o21bo34bobo23bo
2bo29bo2bobo20bo30b2o29bo$46bo28bo2bo17bo4b2o58bo28bo34bo27b2o30bobo
24bo28bobo30bo$74bo3bobo13bobo3bo61bo27b2o32bo61bo26bo26bobo32bo$73bo
4b2o15b2o4b2o60bobo26bo30bo87bobo26b2o31bobo$70bobo30bo60b2o26b3o25bob
o87bobo59bobo$70b2o28bobo92bo24b2o89bo60bo$100b2o92b2o177bo$372b2o4b2o
$378bobo$378bo4$111bo$111bobo$111b2o3$74bo$75bo$73b3o2$51b2o29b2o16b2o
28b2o29b2o36b2o20bo36b2o23b2o34b2o23b2o24b2o$50bo2bo27bobo17bo28bobo
28bo38bo19bobo34bobo24bo35bo22bobo24bo$49bo2bobo18b2ob2o2bobo18bob2o
27bo29b3o34bo21bobo33bo23b3o31b2obo23bo28bo$48bo4bo18bobobobo2bo18b2ob
o7bo20b2ob2o4b2o22bo32bo23bobo30bob2o21bo35bob2o21bob2o2b2o23bo$47bo
23bo3bo3b2o23bo6bobo19bobo5bobo20bo32bo25b2o29bobo24bo34bo24bo3bo2bo
24bo$46bo23bo34bo5b2o20bo2bo4bo21bo32bo6b2o20b2o26bo2bo23b2o32bobo23b
2o3bobo26bo7b2obo$45bo24b2o34bo25b2o3bo24bo28bo3bo7bobo19bobo25bobo24b
o33b2o30bo28bo6bob2o$44bo62bo30bo23b2o26bobobo8bo23bo23b2obo26bo30b2o
29b3o30bo3b2o$b2o40bo64bo30bo23bo26bobob2o30bo25bo29bo23b2o3bobo29bo
33bo2bo$obo39bo64b2o31bo21bo28b2obo2bo27bo24bobo23b2o5bo21bobo2bobo65b
obo$2bo38bo67b2o30bo19bo34b2o26bo21b2o2b2o23bobo4b2o23bo2b2o67bo$40bo
31b3o34bo2bo27b2o18bo62bo21bobo29bo4bo65b3o$40bobo31bo36b2o48b3o56bobo
24bo35bo64bo$41bobo29bo90bo55b2o62bobo62bo23b3o$42bo120b2o120b2o88bo$
374bo2$36b3o177b3o$38bo33bo92b3o50bo$37bo35bo91bo51bo111b3o$71b3o92bo
128b2o34bo$294bobo33bo31b3o76b2o$60bo153b3o79bo67bo76bobo$60bobo153bo
146bo77bo$29b3o28b2o153bo$31bo78bo$30bo78bo$109b3o141b2o$254b2o$253bo$
45b2o30b2o30b2o28b2o$44bobo29bobo29bobo27bobo$43bobo29bobo29bobo27bobo
38b3o$43bo30bobo29bobo28b2o5b2o32bo$41b3o30b2o29bobo27b2o7bobo32bo43b
2o$40bo31b2o30bobo27bobo7bo78bobo$41bo31bo29bobo28b2o87bo$42bo29bo29bo
bo27b2o$43bo28b2o27bobo27bobo$44bo28bo26bobo27bobo$45bo26bo27b2o28b2o$
46bo24bo$47bo5bo16bo$48bobo2bobo14b2o4b2o135b2o$49b2o2b2o21bobo92b3o
38bobo$76bo94bo42bo$172bo13$124b3o$124bo$125bo4$106b2o$105bobo$107bo!

[confocaloid]

I think xs19_0g8k48gka53z321 is the unique smallest strict still life without a two-glider destruction by a p1 slow salvo. In other words, no matter how you hit this xs19 with a glider, either the collision does not settle to a stable pattern, or the result cannot be cleaned by a second glider arriving from the same direction.
In addition, one of two orientations cannot be destroyed by a p1 slow salvo at all; after the first glider, there will be either blinkers or escaping gliders. Below is shown the other orientation, with an "almost 2G destruction" that creates a single returning glider:

Code: Select all

x = 32, y = 29, rule = B3/S23
bo$2bo$3o8$18bo$19bo$17b3o10$30b2o$29bobo$24b2o2bobo$23bo2bo2bo$22bobo
2b2o$21bobo$21b2o!

There are four strict xs20 without a two-glider destruction by a p1 slow salvo; the first of these appears to be the unique smallest asymmetric example:

Code: Select all

x = 98, y = 10, rule = B3/S23
5b2o23b2o32bo29bo$4bobo6b2o15bobo30bobo27bobo$3bo3b2o3bobo16b2o30bobo
27bobo$2bo6bobo21b2o26b2o3b2o22b2obobobo$bo7b2o22bobo24bo7bo21bobobob
2o$o33bobo24b2o3b2o24bobo$2o33b2o26bobo26bobo$37b2o24bobo27bo$37bobo
24bo$38b2o!

[TYCF]

1 glider destruction of xs26_0ggm453z5u0t552zw1.

Code: Select all

x = 14, y = 13, rule = B3/S23
bo$2bo$3o9b2o$10bo2bo$10b3o2$8b3o$7bo2b3o$8bo4bo$7b2ob3o$8bobo$8bobo$
9bo!

EDIT by dvgrn: I moved this post to a somewhat appropriate thread, since it doesn't really seem like an "unsure discovery". However, it's not clear that posting 1G destructions of 26-cell still lifes one at a time is really going to be a good idea -- considering that we could easily write a script to run against all twenty-four million 26-cell still lifes, and produce a list of everything that has a 1G destruction, somewhat along the lines of what confocaloid has been doing above.

[HerscheltheHerschel]

1G for integral

Code: Select all

x = 8, y = 8, rule = B3/S23
3b2o$2bobo$2bo$obo$2o$5b3o$5bo$6bo!

2G for hooked integral

Code: Select all

x = 13, y = 12, rule = B3/S23
8bo$2o5bo$obo4b3o$2bo$2bob2o$3bobo4$10b3o$10bo$11bo!

1G for Big S

Code: Select all

x = 9, y = 8, rule = B3/S23
4b2o$3bo2bo$3bob2o$2obo$o2bo$b2o3b3o$6bo$7bo!

2G for paperclip

Code: Select all

x = 18, y = 16, rule = B3/S23
2b2o$bo2bo$bob2o$2obo$o2bo$b2o$6b3o$6bo$7bo5$15b3o$15bo$16bo!

I need one for prodigal

[b-engine]

2 gliders destruction of a 13-cell still life:

Code: Select all

x = 22, y = 14, rule = LifeHistory
.C$2.C$3C3$10.C$11.C$9.3C4$15.2E.2E$13.E2.E.E2.E$13.2E2.E2.2E!

EDIT:
3-glider destruction of a 34-cells still life:

Code: Select all

x = 43, y = 27, rule = LifeHistory
.C12.C$2.C12.C$3C10.3C13$19.C$20.C$18.3C7$21.2E.2E2.E2.2E.2E2.E2.2E$19.
E2.E.E2.E.E2.E.E2.E.E2.E$19.2E2.E2.2E.2E2.E2.2E.2E!

[confocaloid]

3-glider destruction of a 34-cells still life:

Code: Select all

x = 43, y = 27, rule = LifeHistory
.C12.C$2.C12.C$3C10.3C13$19.C$20.C$18.3C7$21.2E.2E2.E2.2E.2E2.E2.2E$19.
E2.E.E2.E.E2.E.E2.E.E2.E$19.2E2.E2.2E.2E2.E2.2E.2E!

2G and 1G destructions of the same still life:

Code: Select all

x = 67, y = 34, rule = LifeHistory
41.A$40.A$40.3A12$12.A52.A$11.A52.A$11.3A50.3A15$2.2E.2E2.E2.2E.2E2.E
2.2E18.2E.2E2.E2.2E.2E2.E2.2E$E2.E.E2.E.E2.E.E2.E.E2.E16.E2.E.E2.E.E
2.E.E2.E.E2.E$2E2.E2.2E.2E2.E2.2E.2E18.2E2.E2.2E.2E2.E2.2E.2E!

What could be interesting is small strict still lives for which you cannot find an 1G or 2G destruction. I believe all strict still lives up to 22 bits are 2G-destructible.

[HerscheltheHerschel]

3G for beehive with hooked nine:

Code: Select all

x = 19, y = 18, rule = B3/S23
9bo$2b2o4bo$bo2bo3b3o$2b2obo$5bo$5bob2o$6bobo$3o$2bo$bo6$16b3o$16bo$
17bo!

1G for beehive trans-line boat:

Code: Select all

x = 10, y = 8, rule = B3/S23
8bo$b2o4bo$o2bo3b3o$b2obo$4bo$4bobo$5bobo$6b2o!

2G for ortho-fishhook-tie:

Code: Select all

x = 31, y = 38, rule = B3/S23
29bo$28bo$28b3o28$2o2bo$o3b3o$b3o3bo$3bo2b2o2$3o$2bo$bo!

[rutabaga]

...
CthuIhu in five gliders:

Code: Select all

x = 14, y = 21, rule = LifeHistory
.A3.A3.A$A.A.A.A.A.A$A.A.A.A.A.A$.2A.A.A.2A$4.A.A$4.A.A$3.2A.2A$2.A4.
A$2.2A.2A$3.A.A$2.A2.A$2.A.A$.2A.2A5$11.3C$11.C$12.C!

Code: Select all

x = 35, y = 68, rule = LifeHistory
33.C$32.C$32.3C13$18.C$17.C$17.3C11$.A3.A3.A$A.A.A.A.A.A$A.A.A.A.A.A$
.2A.A.A.2A$4.A.A$4.A.A$3.2A.2A$2.A4.A$2.2A.2A$3.A.A$2.A2.A$2.A.A$.2A.
2A4$10.3C$10.C$11.C19$14.3C$14.C$15.C!

four gliders cthulhu found by hand

[confocaloid]

four gliders cthulhu found by hand

2G and 1G found in Golly by hand

Code: Select all

x = 95, y = 48, rule = B3/S23
51bobo$51b2o$52bo14$27bo65bo$26bo65bo$26b3o63b3o17$bo3bo3bo51bo3bo3bo$
obobobobobo49bobobobobobo$obobobobobo49bobobobobobo$b2obobob2o51b2obob
ob2o$4bobo57bobo$4bobo57bobo$3b2ob2o55b2ob2o$2bo4bo54bo4bo$2b2ob2o55b
2ob2o$3bobo57bobo$2bo2bo56bo2bo$2bobo57bobo$b2ob2o55b2ob2o!

Edit:

double cthulhu in 2g

2G slow destruction (1G reduction to a block)

Code: Select all

x = 19, y = 39, rule = B3/S23
9bo3bo3bo$8bobobobobobo$8bobobobobobo$9b2obobob2o$12bobo$12bobo$11b2ob
2o$10bo4bo$10b2ob2o$11bobo$10bo2bo$10bobo$9b2ob2o$10bobo$9bo2bo$9bobo$
8b2ob2o$7bo4bo$7b2ob2o$8bobo$8bobo$5b2obobob2o$4bobobobobobo$4bobobobo
bobo$5bo3bo3bo12$3o$2bo$bo!

p2 slow 3G conversion to Ctulhu

Code: Select all

x = 49, y = 46, rule = B3/S23
46bobo$46b2o$47bo7$45bo$44bo$44b3o10$5bo3bo3bo$4bobobobobobo$4bobobobo
bobo$5b2obobob2o$8bobo$8bobo$7b2ob2o$6bo4bo$6b2ob2o$7bobo$6bo2bo$6bobo
15bo$5b2ob2o13bo$6bobo14b3o$5bo2bo$5bobo$4b2ob2o$3bo4bo$3b2ob2o$4bobo$
4bobo$b2obobob2o$obobobobobo$obobobobobo$bo3bo3bo!

[rutabaga]

Code: Select all

x = 54, y = 42, rule = B3/S23
o$b2o$2o51bo$51b2o$52b2o13$30bo3bo3bo$29bobobobobobo$29bobobobobobo$30b
2obobob2o$33bobo$33bobo$32b2ob2o$31bo4bo$31b2ob2o$32bobo$31bo2bo$31bo
bo$30b2ob2o$31bobo$30bo2bo$30bobo$29b2ob2o$28bo4bo$28b2ob2o$29bobo$29b
obo$26b2obobob2o$25bobobobobobo$25bobobobobobo$26bo3bo3bo!

double cthulhu in 2g

[Antonin Duda]

The 0E0P metacell self-destructs.
Is it possible to add gliders to make it destruct faster?

Finished the pulsar:

Code: Select all

x = 76, y = 66, rule = LifeHistory
71.C$71.C.C$71.2C18$16.C.C$17.2C$17.C15$36.B5.B$35.2AB3.B2A$35.B2A3.2A
B$33.A2BABA.ABA2BA$32.B3AB2A.2AB3AB$33.BABABA.ABABAB$33.2B3AB.B3A2B$32.
4B.2B.2B.4B$33.2B3AB.B3A2B$33.BABABA.ABABAB$32.B3AB2A.2AB3AB$33.A2BAB
A.ABA2BA$35.B2A3.2AB$35.2AB3.B2A$36.B5.B5$47.3C$47.C$48.C5$50.3C$50.C
$51.C!

2 gliders:

Code: Select all

x = 34, y = 38, rule = B3/S23
13bobo$14b2o$14bo8$23b3o3b3o2$21bo4bobo4bo$21bo4bobo4bo$21bo4bobo4bo$
23b3o3b3o2$23b3o3b3o$21bo4bobo4bo$21bo4bobo4bo$21bo4bobo4bo2$23b3o3b3o
13$b2o$obo$2bo!

[HerscheltheHerschel]

Not sure if this is allowed, but 1G/2G for queen bee

Code: Select all

x = 11, y = 11, rule = B3/S23
6bo$6bobo$7bobo$7bo2bo$7bobo$6bobo$6bo2$3o$2bo$bo!

Code: Select all

x = 19, y = 15, rule = B3/S23
17bo$16bo$16b3o2$6bo$6bobo$7bobo$7bo2bo$7bobo$6bobo$6bo2$3o$2bo$bo!

[Antonin Duda]

3 glider destruction of spider:

Code: Select all

x = 63, y = 75, rule = B3/S23
62bo$60b2o$61b2o39$14bo$2bobo7b2o$3b2o8b2o$3bo23$9bo7bo$3b2obobob2o3b
2obobob2o$3obob3o9b3obob3o$o3bobo5bobo5bobo3bo$4b2o6bobo6b2o$b2o9bobo
9b2o$b2ob2o15b2ob2o$5bo15bo!

edit: 2 glider destruction of spider:

Code: Select all

x = 74, y = 80, rule = B3/S23
71bobo$71b2o$72bo62$16bo7bo$10b2obobob2o3b2obobob2o$7b3obob3o9b3obob3o
$7bo3bobo5bobo5bobo3bo$11b2o6bobo6b2o$8b2o9bobo9b2o$8b2ob2o15b2ob2o$
12bo15bo6$bo$b2o$obo!

edit 2: 2 glider destruction of dragon:

Code: Select all

x = 60, y = 36, rule = B3/S23
o$b2o$2o14$11bo$12b2o$11b2o30bo$43b2o14bo$41bob2o5bobo4b2o$36bo3bo3b3o
2bo4bo$31b2o3bo2bo6bobo5b3o2bo$31b2o3bob2o6bo3bobobo$31b2o3bo10bobo7b
2o$36b2o14bo6bo$38bo12bobo$38bo12bobo$36b2o14bo6bo$31b2o3bo10bobo7b2o$
31b2o3bob2o6bo3bobobo$31b2o3bo2bo6bobo5b3o2bo$36bo3bo3b3o2bo4bo$41bob
2o5bobo4b2o$43b2o14bo$43bo!

edit 3: 2 glider destruction of walrus:

Code: Select all

x = 59, y = 53, rule = B3/S23
o$b2o$2o17$52bo$50b2o$51b2o14$43b6o$45b2o$42bo5b2o$40b8obo$39b4o3bo$
39bo9b3o$42b2o3b2ob2o2b2o$41b3o2b5ob3o2bo$40bob2obobo2b3o4bo$39b2obo3b
o4b3o4bo$46bo$41bo$42b2o$47b3o$47bo2$48bo$45b2ob2o!

edit 4: clean one glider destruction of 56P6H1V0:

Code: Select all

x = 26, y = 22, rule = B3/S23
obo$b2o$bo8$5b3o10b3o$3obo7b2o7bob3o$4bo3bo2bo2bo2bo3bo$4bo5bo4bo5bo$
10b2o2b2o$7bo3bo2bo3bo$7bobo6bobo$8b10o$10bo4bo$8bo8bo$7bo10bo$8bo8bo!

edit 5: clean one glider destruction of 70P2H1V0.1:

Code: Select all

x = 32, y = 28, rule = B3/S23
o$4o$2b2o$5bo$6o$6bobo$obob6o$ob2o5b2o$4b2o4b2o$5o4b2o2$5o4b2o$4b2o4b
2o$ob2o5b2o$obob6o$6bobo$6o$5bo$2b2o$4o$o5$29b3o$31bo$30bo!

[HerscheltheHerschel]

challenge: destroy this in less than 4 gliders

Code: Select all

x = 21, y = 23, rule = B3/S23
2o6bo$bo6b3o$bobo7bo$2bobo5bobo$3bobo3bobo$4bo2bo2bo$5b5o2$7bo$6bobo$
6bo2bob2o$7bobobobo$8b2obo2bo$12bobo$13bo2$11b5o$10bo2bo2bo$9bobo3bob
o$8bobo5bobo$9bo7bobo$10b3o6bo$12bo6b2o!

here's the 4g destruction for this:

Code: Select all

x = 42, y = 46, rule = B3/S23
40bo$39bo$39b3o5$bo$2bo$3o3$19bo$19bobo$19b2o2$18bo$16bobo$17b2o5$15b
2o6bo$16bo6b3o$16bobo7bo$17bobo5bobo$18bobo3bobo$19bo2bo2bo$20b5o2$22b
o$21bobo$21bo2bob2o$22bobobobo$23b2obo2bo$27bobo$28bo2$26b5o$25bo2bo2b
o$24bobo3bobo$23bobo5bobo$24bo7bobo$25b3o6bo$27bo6b2o!

[confocaloid]

challenge: destroy this in less than 4 gliders [...]

2G

Code: Select all

x = 82, y = 84, rule = B3/S23
80bo$79bo$79b3o42$15bo$14bo$14b3o15$2o6bo$bo6b3o$bobo7bo$2bobo5bobo$3b
obo3bobo$4bo2bo2bo$5b5o2$7bo$6bobo$6bo2bob2o$7bobobobo$8b2obo2bo$12bob
o$13bo2$11b5o$10bo2bo2bo$9bobo3bobo$8bobo5bobo$9bo7bobo$10b3o6bo$12bo
6b2o!