Glider Destruction Of Still Lives, Oscillators, Etc.

[HerscheltheHerschel]

3G R49 catalyst:

Code: Select all

x = 49, y = 31, rule = B3/S23
bo$2bo$3o44bo$46bo$46b3o17$29bo$27b3o$19b2o5bo$17b3obo4b2o$16bo4bo$17b
3obob2o$19bobo2bo$22b2o5b3o$29bo$30bo!

4G 8fold hat:

Code: Select all

x = 230, y = 280, rule = B3/S23
47bo$48bo$46b3o62$228bo$227bo$227b3o59$173bo$172bo$172b3o3$160bo3bo3bo
3bo$156b2obobobobobobobobo$157bobobobobobobobobo$157bobobobobobobobob
2o$158bo3bo3bo3bo143$3o$2bo$bo!

[HerscheltheHerschel]

(Sorry for multipost)
Challenge: destroy this:

Code: Select all

x = 19, y = 25, rule = B3/S23
7b2o$6bo2bo$7bo2bo$8b2o2$bo6b2o3bo$obo3b3obobobo$o2bobo4bobo2bo$bobobo
b3o3b2obo$2bo3b2o7bobo$15bo2bo$6b2o8b2o$5bo2bo$6b2o8b2o$15bo2bo$2bo3b
2o7bobo$bobobob3o3b2obo$o2bobo4bobo2bo$obo3b3obobobo$bo6b2o3bo2$8b2o$
7bo2bo$6bo2bo$7b2o!

[b-engine]

(Sorry for multipost)
Challenge: destroy this:

Code: Select all

The challenge

A successful attempt, but very likely not minimal:

Code: Select all

x = 59, y = 91, rule = B3/S23
52bo$51bo$51b3o10$50bo6bo$49bo6bo$49b3o4b3o5$7bo$8bo$6b3o3$bo$2bo$3o7$
21b2o$20bo2bo$21bo2bo$22b2o2$15bo6b2o3bo$14bobo3b3obobobo$14bo2bobo4b
obo2bo$15bobobob3o3b2obo$16bo3b2o7bobo$29bo2bo$20b2o8b2o$19bo2bo$20b2o
8b2o$29bo2bo$16bo3b2o7bobo$15bobobob3o3b2obo$14bo2bobo4bobo2bo$14bobo
3b3obobobo$15bo6b2o3bo2$22b2o$21bo2bo$20bo2bo$21b2o7$3o$2bo$bo3$6b3o$
8bo$7bo5$49b3o4b3o$49bo6bo$50bo6bo10$51b3o$51bo$52bo!

Challenge: Destroy this:

Code: Select all

x = 54, y = 165, rule = B3/S23
44b2o$44bo$42bobo$42b2o5$45b2o5b2o$45b2o5b2o2$48b2o$48b2o4$25b2o$25b2o
12bo$39bobo$21b2o5b2o9b3o$21b2o5b2o11bo3$18b2o$18bo$13b2o5bo$13bo5b2o
$10b2obo$10bo2bob2o2b2o$12b2obo3b2o$15bo$15b2o$8b2o11bo$7bobo10bobo$7b
o13bo$4b2obo$5bobob2o$5bobob2o$4b2obo7b2o$4bo2b4o3bo2bo7b2o5b2o$5b2o3b
o4b2o8bobo5bo$7b2o18bo3bo5b2o$7bo19b2o2b2o5bo$9bo28bob2o$8b2o21b2o2b2o
bo2bo$31b2o3bob2o$36bo$35b2o$30bo11b2o$29bobo10bobo$30bo13bo$44bob2o$
41b2obobo$41b2obobo$35b2o7bob2o$25b2o7bo2bo3b4o2bo$24bobo8b2o4bo3b2o$
16b2o6bo18b2o$16bo6b2o19bo$11b2o5bo23bo$11bo5b2o23b2o$8b2obo$8bo2bob2o
2b2o$10b2obo3b2o$13bo$13b2o$6b2o11bo$5bobo10bobo$5bo13bo$2b2obo$3bobo
b2o$3bobob2o$2b2obo7b2o$2bo2b4o3bo2bo7b2o5b2o$3b2o3bo4b2o8bobo5bo$5b2o
18bo3bo5b2o$5bo19b2o2b2o5bo$7bo28bob2o$6b2o21b2o2b2obo2bo$29b2o3bob2o
$34bo$33b2o$28bo11b2o$27bobo10bobo$28bo13bo$42bob2o$39b2obobo$39b2obo
bo$33b2o7bob2o$23b2o7bo2bo3b4o2bo$22bobo8b2o4bo3b2o$14b2o6bo18b2o$14b
o6b2o19bo$9b2o5bo23bo$9bo5b2o23b2o$6b2obo$6bo2bob2o2b2o$8b2obo3b2o$11b
o$11b2o$4b2o11bo$3bobo10bobo$3bo13bo$2obo$bobob2o$bobob2o$2obo7b2o$o2b
4o3bo2bo7b2o5b2o$b2o3bo4b2o8bobo5bo$3b2o18bo3bo5b2o$3bo19b2o2b2o5bo$5b
o28bob2o$4b2o21b2o2b2obo2bo$27b2o3bob2o$32bo$31b2o$26bo11b2o$25bobo10b
obo$26bo13bo$40bob2o$37b2obobo$37b2obobo$31b2o7bob2o$14b2o5b2o7bo2bo3b
4o2bo$14bo5bobo8b2o4bo3b2o$9b2o5bo3bo18b2o$9bo5b2o2b2o19bo$6b2obo28bo
$6bo2bob2o2b2o21b2o$8b2obo3b2o$11bo$11b2o$4b2o11bo$3bobo10bobo$3bo13b
o$2obo$bobob2o$bobob2o$2obo7b2o$o2b4o3bo2bo7b2o5b2o$b2o3bo4b2o8bobo5b
o$3b2o18bo3bo5b2o$3bo19b2o2b2o5bo$5bo28bob2o$4b2o21b2o2b2obo2bo$27b2o
3bob2o$32bo$31b2o$26bo11b2o$25bobo10bobo$26bo13bo$40bob2o$37b2obobo$37b
2obobo$31b2o7bob2o$21b2o7bo2bo3b4o2bo$20bobo8b2o4bo3b2o$20bo18b2o$19b
2o19bo$38bo$38b2o$23b2o$22bobo$22bo$21b2o!

Or this:

Code: Select all

x = 28, y = 31, rule = B3/S23
13b2o$12bo2bo$9b2o2b2o2b2o$8bo2b2o2b2o2bo$5b2o2b2o2b2o2b2o2b2o$4bo2b2o
2b2o2b2o2b2o2bo$b2o2b2o2b2o2b2o2b2o2b2o2b2o$o2b2o2b2o2b2o2b2o2b2o2b2o
2bo$b2o2b2o2b2o2b2o2b2o2b2o2b2o$3b2o2b2o2b2o2b2o2b2o2b2o$b2o2b2o2b2o2b
2o2b2o2b2o2b2o$o2b2o2b2o2b2o2b2o2b2o2b2o2bo$b2o2b2o2b2o2b2o2b2o2b2o2b
2o$3b2o2b2o2b2o2b2o2b2o2b2o$b2o2b2o2b2o2b2o2b2o2b2o2b2o$o2b2o2b2o2b2o
2b2o2b2o2b2o2bo$b2o2b2o2b2o2b2o2b2o2b2o2b2o$3b2o2b2o2b2o2b2o2b2o2b2o$
b2o2b2o2b2o2b2o2b2o2b2o2b2o$o2b2o2b2o2b2o2b2o2b2o2b2o2bo$b2o2b2o2b2o2b
2o2b2o2b2o2b2o$3b2o2b2o2b2o2b2o2b2o2b2o$b2o2b2o2b2o2b2o2b2o2b2o2b2o$o
2b2o2b2o2b2o2b2o2b2o2b2o2bo$b2o2b2o2b2o2b2o2b2o2b2o2b2o$4bo2b2o2b2o2b
2o2b2o2bo$5b2o2b2o2b2o2b2o2b2o$8bo2b2o2b2o2bo$9b2o2b2o2b2o$12bo2bo$13b
2o!

[HerscheltheHerschel]

3G cis-Cthulhu:

Code: Select all

x = 36, y = 22, rule = B3/S23
24bo9bo$23bo9bo$23b3o7b3o7$bo3bo3bo$obobobobobo$obobobobobo$b2obobob2o
$4bobo6bo$4bobo5bo$3b2ob2o4b3o$2bo4bo$2b2ob2o$3bobo$3bo2bo$4bobo$3b2o
b2o!

Challenge: Destroy this:

Code: Select all

x = 54, y = 165, rule = B3/S23
44b2o$44bo$42bobo$42b2o5$45b2o5b2o$45b2o5b2o2$48b2o$48b2o4$25b2o$25b2o
12bo$39bobo$21b2o5b2o9b3o$21b2o5b2o11bo3$18b2o$18bo$13b2o5bo$13bo5b2o
$10b2obo$10bo2bob2o2b2o$12b2obo3b2o$15bo$15b2o$8b2o11bo$7bobo10bobo$7b
o13bo$4b2obo$5bobob2o$5bobob2o$4b2obo7b2o$4bo2b4o3bo2bo7b2o5b2o$5b2o3b
o4b2o8bobo5bo$7b2o18bo3bo5b2o$7bo19b2o2b2o5bo$9bo28bob2o$8b2o21b2o2b2o
bo2bo$31b2o3bob2o$36bo$35b2o$30bo11b2o$29bobo10bobo$30bo13bo$44bob2o$
41b2obobo$41b2obobo$35b2o7bob2o$25b2o7bo2bo3b4o2bo$24bobo8b2o4bo3b2o$
16b2o6bo18b2o$16bo6b2o19bo$11b2o5bo23bo$11bo5b2o23b2o$8b2obo$8bo2bob2o
2b2o$10b2obo3b2o$13bo$13b2o$6b2o11bo$5bobo10bobo$5bo13bo$2b2obo$3bobo
b2o$3bobob2o$2b2obo7b2o$2bo2b4o3bo2bo7b2o5b2o$3b2o3bo4b2o8bobo5bo$5b2o
18bo3bo5b2o$5bo19b2o2b2o5bo$7bo28bob2o$6b2o21b2o2b2obo2bo$29b2o3bob2o
$34bo$33b2o$28bo11b2o$27bobo10bobo$28bo13bo$42bob2o$39b2obobo$39b2obo
bo$33b2o7bob2o$23b2o7bo2bo3b4o2bo$22bobo8b2o4bo3b2o$14b2o6bo18b2o$14b
o6b2o19bo$9b2o5bo23bo$9bo5b2o23b2o$6b2obo$6bo2bob2o2b2o$8b2obo3b2o$11b
o$11b2o$4b2o11bo$3bobo10bobo$3bo13bo$2obo$bobob2o$bobob2o$2obo7b2o$o2b
4o3bo2bo7b2o5b2o$b2o3bo4b2o8bobo5bo$3b2o18bo3bo5b2o$3bo19b2o2b2o5bo$5b
o28bob2o$4b2o21b2o2b2obo2bo$27b2o3bob2o$32bo$31b2o$26bo11b2o$25bobo10b
obo$26bo13bo$40bob2o$37b2obobo$37b2obobo$31b2o7bob2o$14b2o5b2o7bo2bo3b
4o2bo$14bo5bobo8b2o4bo3b2o$9b2o5bo3bo18b2o$9bo5b2o2b2o19bo$6b2obo28bo
$6bo2bob2o2b2o21b2o$8b2obo3b2o$11bo$11b2o$4b2o11bo$3bobo10bobo$3bo13b
o$2obo$bobob2o$bobob2o$2obo7b2o$o2b4o3bo2bo7b2o5b2o$b2o3bo4b2o8bobo5b
o$3b2o18bo3bo5b2o$3bo19b2o2b2o5bo$5bo28bob2o$4b2o21b2o2b2obo2bo$27b2o
3bob2o$32bo$31b2o$26bo11b2o$25bobo10bobo$26bo13bo$40bob2o$37b2obobo$37b
2obobo$31b2o7bob2o$21b2o7bo2bo3b4o2bo$20bobo8b2o4bo3b2o$20bo18b2o$19b
2o19bo$38bo$38b2o$23b2o$22bobo$22bo$21b2o!

[/code]

3G for one of the catalysts:

Code: Select all

x = 29, y = 26, rule = B3/S23
27bo$26bo$26b3o3$bo$2bo$3o2$17bo$16bo$16b3o2$9b2o$9bobo$11bo$11bob2o$
8b2obobo$8b2obobo$11bob2o$8b4o2bo$8bo3b2o$10b2o$11bo$9bo$9b2o!

2G solenoidal gull:

Code: Select all

x = 19, y = 27, rule = B3/S23
17bo$16bo$16b3o15$6bo3bo$2b2obobobobob2o$2b2obobobobobo$5bobobobobo$2b
3o3bo3bo$2bo$obo$2o6b3o$8bo$9bo!

[KtT]

3G R49 catalyst:

Code: Select all

x = 49, y = 31, rule = B3/S23
bo$2bo$3o44bo$46bo$46b3o17$29bo$27b3o$19b2o5bo$17b3obo4b2o$16bo4bo$17b
3obob2o$19bobo2bo$22b2o5b3o$29bo$30bo!

1G:

Code: Select all

x = 20, y = 22, rule = B3/S23
bo$2bo$3o12$19bo$17b3o$9b2o5bo$7b3obo4b2o$6bo4bo$7b3obob2o$9bobo2bo$12b
2o!

4G 8fold hat:

Code: Select all

x = 230, y = 280, rule = B3/S23
47bo$48bo$46b3o62$228bo$227bo$227b3o59$173bo$172bo$172b3o3$160bo3bo3bo
3bo$156b2obobobobobobobobo$157bobobobobobobobobo$157bobobobobobobobob
2o$158bo3bo3bo3bo143$3o$2bo$bo!

2G:

Code: Select all

x = 19, y = 39, rule = B3/S23
14bo$13bo$13b3o15$4bo3bo3bo3bo$2obobobobobobobobo$bobobobobobobobobo$
bobobobobobobobob2o$2bo3bo3bo3bo15$3b3o$5bo$4bo!

(Sorry for multipost)
Challenge: destroy this:

Code: Select all

The challenge

A successful attempt, but very likely not minimal:

Code: Select all

x = 59, y = 91, rule = B3/S23
52bo$51bo$51b3o10$50bo6bo$49bo6bo$49b3o4b3o5$7bo$8bo$6b3o3$bo$2bo$3o7$
21b2o$20bo2bo$21bo2bo$22b2o2$15bo6b2o3bo$14bobo3b3obobobo$14bo2bobo4b
obo2bo$15bobobob3o3b2obo$16bo3b2o7bobo$29bo2bo$20b2o8b2o$19bo2bo$20b2o
8b2o$29bo2bo$16bo3b2o7bobo$15bobobob3o3b2obo$14bo2bobo4bobo2bo$14bobo
3b3obobobo$15bo6b2o3bo2$22b2o$21bo2bo$20bo2bo$21b2o7$3o$2bo$bo3$6b3o$
8bo$7bo5$49b3o4b3o$49bo6bo$50bo6bo10$51b3o$51bo$52bo!

3G:

Code: Select all

x = 54, y = 69, rule = B3/S23
52bo$51bo$51b3o5$50bo$49bo$49b3o15$27bo$26bo$26b3o18$7b2o$6bo2bo$7bo2b
o$8b2o2$bo6b2o3bo$obo3b3obobobo$o2bobo4bobo2bo$bobobob3o3b2obo$2bo3b2o
7bobo$15bo2bo$6b2o8b2o$5bo2bo$6b2o8b2o$15bo2bo$2bo3b2o7bobo$bobobob3o
3b2obo$o2bobo4bobo2bo$obo3b3obobobo$bo6b2o3bo2$8b2o$7bo2bo$6bo2bo$7b2o
!

Challenge: Destroy this:

Code: Select all

x = 54, y = 165, rule = B3/S23
44b2o$44bo$42bobo$42b2o5$45b2o5b2o$45b2o5b2o2$48b2o$48b2o4$25b2o$25b2o
12bo$39bobo$21b2o5b2o9b3o$21b2o5b2o11bo3$18b2o$18bo$13b2o5bo$13bo5b2o
$10b2obo$10bo2bob2o2b2o$12b2obo3b2o$15bo$15b2o$8b2o11bo$7bobo10bobo$7b
o13bo$4b2obo$5bobob2o$5bobob2o$4b2obo7b2o$4bo2b4o3bo2bo7b2o5b2o$5b2o3b
o4b2o8bobo5bo$7b2o18bo3bo5b2o$7bo19b2o2b2o5bo$9bo28bob2o$8b2o21b2o2b2o
bo2bo$31b2o3bob2o$36bo$35b2o$30bo11b2o$29bobo10bobo$30bo13bo$44bob2o$
41b2obobo$41b2obobo$35b2o7bob2o$25b2o7bo2bo3b4o2bo$24bobo8b2o4bo3b2o$
16b2o6bo18b2o$16bo6b2o19bo$11b2o5bo23bo$11bo5b2o23b2o$8b2obo$8bo2bob2o
2b2o$10b2obo3b2o$13bo$13b2o$6b2o11bo$5bobo10bobo$5bo13bo$2b2obo$3bobo
b2o$3bobob2o$2b2obo7b2o$2bo2b4o3bo2bo7b2o5b2o$3b2o3bo4b2o8bobo5bo$5b2o
18bo3bo5b2o$5bo19b2o2b2o5bo$7bo28bob2o$6b2o21b2o2b2obo2bo$29b2o3bob2o
$34bo$33b2o$28bo11b2o$27bobo10bobo$28bo13bo$42bob2o$39b2obobo$39b2obo
bo$33b2o7bob2o$23b2o7bo2bo3b4o2bo$22bobo8b2o4bo3b2o$14b2o6bo18b2o$14b
o6b2o19bo$9b2o5bo23bo$9bo5b2o23b2o$6b2obo$6bo2bob2o2b2o$8b2obo3b2o$11b
o$11b2o$4b2o11bo$3bobo10bobo$3bo13bo$2obo$bobob2o$bobob2o$2obo7b2o$o2b
4o3bo2bo7b2o5b2o$b2o3bo4b2o8bobo5bo$3b2o18bo3bo5b2o$3bo19b2o2b2o5bo$5b
o28bob2o$4b2o21b2o2b2obo2bo$27b2o3bob2o$32bo$31b2o$26bo11b2o$25bobo10b
obo$26bo13bo$40bob2o$37b2obobo$37b2obobo$31b2o7bob2o$14b2o5b2o7bo2bo3b
4o2bo$14bo5bobo8b2o4bo3b2o$9b2o5bo3bo18b2o$9bo5b2o2b2o19bo$6b2obo28bo
$6bo2bob2o2b2o21b2o$8b2obo3b2o$11bo$11b2o$4b2o11bo$3bobo10bobo$3bo13b
o$2obo$bobob2o$bobob2o$2obo7b2o$o2b4o3bo2bo7b2o5b2o$b2o3bo4b2o8bobo5b
o$3b2o18bo3bo5b2o$3bo19b2o2b2o5bo$5bo28bob2o$4b2o21b2o2b2obo2bo$27b2o
3bob2o$32bo$31b2o$26bo11b2o$25bobo10bobo$26bo13bo$40bob2o$37b2obobo$37b
2obobo$31b2o7bob2o$21b2o7bo2bo3b4o2bo$20bobo8b2o4bo3b2o$20bo18b2o$19b
2o19bo$38bo$38b2o$23b2o$22bobo$22bo$21b2o!

Or this:

Code: Select all

x = 28, y = 31, rule = B3/S23
13b2o$12bo2bo$9b2o2b2o2b2o$8bo2b2o2b2o2bo$5b2o2b2o2b2o2b2o2b2o$4bo2b2o
2b2o2b2o2b2o2bo$b2o2b2o2b2o2b2o2b2o2b2o2b2o$o2b2o2b2o2b2o2b2o2b2o2b2o
2bo$b2o2b2o2b2o2b2o2b2o2b2o2b2o$3b2o2b2o2b2o2b2o2b2o2b2o$b2o2b2o2b2o2b
2o2b2o2b2o2b2o$o2b2o2b2o2b2o2b2o2b2o2b2o2bo$b2o2b2o2b2o2b2o2b2o2b2o2b
2o$3b2o2b2o2b2o2b2o2b2o2b2o$b2o2b2o2b2o2b2o2b2o2b2o2b2o$o2b2o2b2o2b2o
2b2o2b2o2b2o2bo$b2o2b2o2b2o2b2o2b2o2b2o2b2o$3b2o2b2o2b2o2b2o2b2o2b2o$
b2o2b2o2b2o2b2o2b2o2b2o2b2o$o2b2o2b2o2b2o2b2o2b2o2b2o2bo$b2o2b2o2b2o2b
2o2b2o2b2o2b2o$3b2o2b2o2b2o2b2o2b2o2b2o$b2o2b2o2b2o2b2o2b2o2b2o2b2o$o
2b2o2b2o2b2o2b2o2b2o2b2o2bo$b2o2b2o2b2o2b2o2b2o2b2o2b2o$4bo2b2o2b2o2b
2o2b2o2bo$5b2o2b2o2b2o2b2o2b2o$8bo2b2o2b2o2bo$9b2o2b2o2b2o$12bo2bo$13b
2o!

The first one has a 17-glider destruction:

Code: Select all

x = 204, y = 265, rule = B3/S23
157bo$151bo4bo$150bo5b3o$150b3o2$5bo$6bo$4b3o14$168bo$167bo$167b3o16$
3bo$4bo$2b3o100b2o$105bo$103bobo$103b2o5$106b2o5b2o$106b2o5b2o2$109b2o
$109b2o2$166bo$165bo$86b2o77b3o$86b2o12bo$100bobo$82b2o5b2o9b3o$82b2o
5b2o11bo3$79b2o$79bo$74b2o5bo$74bo5b2o$71b2obo$71bo2bob2o2b2o$73b2obo
3b2o$76bo31b3o$76b2o30bo$bo67b2o11bo26bo$2bo65bobo10bobo$3o65bo13bo$65b
2obo$66bobob2o$66bobob2o$65b2obo7b2o$65bo2b4o3bo2bo7b2o5b2o$66b2o3bo4b
2o8bobo5bo$68b2o18bo3bo5b2o$68bo19b2o2b2o5bo$70bo28bob2o$69b2o21b2o2b
2obo2bo$92b2o3bob2o$97bo$96b2o$91bo11b2o59bo$90bobo10bobo57bo$91bo13b
o57b3o$105bob2o$102b2obobo$102b2obobo$96b2o7bob2o$86b2o7bo2bo3b4o2bo$
85bobo8b2o4bo3b2o$77b2o6bo18b2o$77bo6b2o19bo$72b2o5bo23bo$72bo5b2o23b
2o$69b2obo$69bo2bob2o2b2o$71b2obo3b2o$bo72bo$2bo71b2o$3o64b2o11bo$66b
obo10bobo$66bo13bo$63b2obo$64bobob2o$64bobob2o$63b2obo7b2o$63bo2b4o3b
o2bo7b2o5b2o$64b2o3bo4b2o8bobo5bo$66b2o18bo3bo5b2o$66bo19b2o2b2o5bo$68b
o28bob2o$67b2o21b2o2b2obo2bo$90b2o3bob2o$95bo68bo$94b2o67bo$89bo11b2o
60b3o$88bobo10bobo$89bo13bo$103bob2o$100b2obobo$100b2obobo$94b2o7bob2o
$84b2o7bo2bo3b4o2bo$83bobo8b2o4bo3b2o$75b2o6bo18b2o$75bo6b2o19bo$70b2o
5bo23bo$70bo5b2o23b2o$67b2obo$67bo2bob2o2b2o$69b2obo3b2o$72bo$72b2o$65b
2o11bo$64bobo10bobo$64bo13bo$61b2obo$62bobob2o$62bobob2o$61b2obo7b2o$
61bo2b4o3bo2bo7b2o5b2o$62b2o3bo4b2o8bobo5bo$64b2o18bo3bo5b2o$64bo19b2o
2b2o5bo$66bo28bob2o$65b2o21b2o2b2obo2bo$88b2o3bob2o$93bo$92b2o$87bo11b
2o$86bobo10bobo$87bo13bo$101bob2o$98b2obobo$98b2obobo$92b2o7bob2o$75b
2o5b2o7bo2bo3b4o2bo$75bo5bobo8b2o4bo3b2o$70b2o5bo3bo18b2o$70bo5b2o2b2o
19bo$67b2obo28bo$67bo2bob2o2b2o21b2o$69b2obo3b2o$72bo$72b2o$65b2o11bo
$64bobo10bobo$64bo13bo$61b2obo$62bobob2o$62bobob2o$61b2obo7b2o$61bo2b
4o3bo2bo7b2o5b2o$62b2o3bo4b2o8bobo5bo$64b2o18bo3bo5b2o$64bo19b2o2b2o5b
o$66bo28bob2o$65b2o21b2o2b2obo2bo$88b2o3bob2o$93bo$92b2o107b3o$87bo11b
2o100bo$86bobo10bobo100bo$87bo13bo$101bob2o$98b2obobo$98b2obobo$92b2o
7bob2o$82b2o7bo2bo3b4o2bo$81bobo8b2o4bo3b2o$81bo18b2o$80b2o19bo$99bo$
99b2o$84b2o$83bobo$83bo$82b2o13$201b3o$201bo$202bo6$201b3o$201bo$50b3o
149bo$52bo$51bo24$201b3o$201bo$202bo6$201b3o$201bo$202bo!

The second one has a 5-glider destruction:

Code: Select all

x = 97, y = 100, rule = B3/S23
81bo$81bobo$81b2o10$88bo$88bobo$88b2o$2bo91bo$obo91bobo$b2o91b2o25$25b
2o$24bo2bo$21b2o2b2o2b2o$20bo2b2o2b2o2bo$17b2o2b2o2b2o2b2o2b2o$16bo2b
2o2b2o2b2o2b2o2bo$13b2o2b2o2b2o2b2o2b2o2b2o2b2o$12bo2b2o2b2o2b2o2b2o2b
2o2b2o2bo$13b2o2b2o2b2o2b2o2b2o2b2o2b2o$15b2o2b2o2b2o2b2o2b2o2b2o$13b
2o2b2o2b2o2b2o2b2o2b2o2b2o$12bo2b2o2b2o2b2o2b2o2b2o2b2o2bo$13b2o2b2o2b
2o2b2o2b2o2b2o2b2o$15b2o2b2o2b2o2b2o2b2o2b2o$13b2o2b2o2b2o2b2o2b2o2b2o
2b2o$12bo2b2o2b2o2b2o2b2o2b2o2b2o2bo$13b2o2b2o2b2o2b2o2b2o2b2o2b2o$15b
2o2b2o2b2o2b2o2b2o2b2o$13b2o2b2o2b2o2b2o2b2o2b2o2b2o$12bo2b2o2b2o2b2o
2b2o2b2o2b2o2bo$13b2o2b2o2b2o2b2o2b2o2b2o2b2o$15b2o2b2o2b2o2b2o2b2o2b
2o$13b2o2b2o2b2o2b2o2b2o2b2o2b2o$12bo2b2o2b2o2b2o2b2o2b2o2b2o2bo$13b2o
2b2o2b2o2b2o2b2o2b2o2b2o$16bo2b2o2b2o2b2o2b2o2bo$17b2o2b2o2b2o2b2o2b2o
$20bo2b2o2b2o2bo$21b2o2b2o2b2o$24bo2bo$25b2o25$b2o$obo$2bo!

EDIT: stripey.rle destruction:

Code: Select all

x = 813, y = 837, rule = B3/S23
810bobo$810b2o$811bo17$806bobo$806b2o$807bo21$790bobo$790b2o$791bo45$
719bobo$719b2o$720bo42$704bobo$704b2o$705bo13$641bobo$641b2o$642bo7$632b
obo$632b2o$633bo13$694bobo$694b2o$695bo11$616bobo56bobo$616b2o57b2o$617b
o58bo2$631bobo$631b2o$632bo16$652bobo$652b2o$653bo8$620bobo$620b2o$621b
o12$629bobo$629b2o$630bo9$551bobo$551b2o$552bo3$581bobo21bobo$581b2o22b
2o$582bo23bo3$550bobo$550b2o34bobo$551bo34b2o$587bo8$569bobo$569b2o$570b
o2$562bobo$562b2o$563bo7$558bobo$558b2o$559bo37bobo$535bobo59b2o$535b
2o61bo$536bo5$495bobo$495b2o$496bo3$521bobo$489bobo29b2o$489b2o31bo$490b
o4$570bobo$570b2o$571bo3$554bobo$554b2o$555bo6$477bobo$477b2o$478bo8$
543bobo$543b2o$544bo7$438bobo91bobo$438b2o92b2o$439bo93bo3$433bobo$433b
2o$434bo25$408bobo$408b2o$409bo9$484bobo$484b2o$383bobo99bo$383b2o$384b
o$398bobo$398b2o$399bo36bobo$436b2o$437bo5$360bobo$360b2o10bobo$361bo
10b2o$373bo3$397bobo40bobo5bobo$397b2o41b2o6b2o$371bobo24bo42bo7bo$371b
2o79bobo$338bobo31bo79b2o$338b2o68bobo42bo$339bo68b2o$409bo9$424bobo$
424b2o$412bobo10bo$412b2o$413bo4$409bobo$409b2o$410bo7$449bobo$449b2o
$450bo8$308bobo$308b2o135bobo$309bo135b2o$446bo2$415bobo$415b2o$416bo
5$433bobo$433b2o$434bo4$409bobo13bobo$409b2o14b2o$410bo15bo272$63bobo
$63b2o$64bo42$bo2bo2bo2bo2bo2bo2bo2bo2bo2bo2bo2bo2bo2bo2bo2bo2bo2bo2b
o2bo2bo2bo$b64o2$b64o$o24bo39bo$b23o3b38o$24b3o$b20o2bo3b38o$o20bo2bo
2bo37bo$b20ob2o6b35o$20bo5bo2bo$b19o2b5o2b36o$o19b2o43bo$b17obo2b43o$
10bo6bobobo$b8o3b3o4bob44o$o7bobobo2bo3bo45bo$b7o2b2o2b2o2b2o3b42o$8b
2o12bo$b7o2b13o2b40o$o7b2o15bo39bo$b7o2b15o3b37o$9bo17bo$b7ob2o2b15ob
2ob33o$o6bobo2bo11bo3bobobo32bo$b6o3bobo2b8o3bo3bo2b3o2b2ob24o$7b3o2b
obo8b7obobo2bo2bobo$b6o3b3ob9o6bobo4b2o4b2o2b19o$o6b2o15bobo2bob2o10b
o2bo18bo$b5obob16ob4o3bo6b3o4b18o$5bobo22b2o2bob2obo2bobo$b4o2b22o3b3o
b2ob3o2b21o$o4b2o22b3o10b2o21bo$b4o2b22o3b10o2bo2b2ob15o$5bo24b2o10bo
bo3bobo$b5ob23o3b8obob2o2bo2b14o$o5b2o23b2o6bobobo2bobo16bo$b4o4b22o2b
4o4bobo2bob4ob12o$5b3obo21bo5bo3bob2obo4bobo$b4o2bo2b20o2b5o3b2o2bob3o
2bo2b11o$o4bobo22b2o4bobo3bobo4bobo13bo$b5ob23o2b3obob2ob2o2b2obobob13o
$31bo2bobo5bo3bobo3bo$b30obobob2ob2o4bo2bobo3b3ob7o$o31bobo2bobo4bo3b
ob4o2bobo6bo$b32ob3o4bobob3obo4bobo2b6o$40b2obobo3bob2obobo$b22ob11o9b
o4b2obobob9o$o21bobo10bo11b2o4b2o10bo$b21o4b10o2b2o3bo4bo6b10o$22b4o3b
o9bo2bobobo4b3obo$b21o3bobo4b7o3bobob2o2bo2bo2b9o$o21bo2bob2o2bo11b2o
4bobobo11bo$b21o2b2obo3bob2o2b2o6b5obob12o$29bobobobo2bo6bo5bo$b30o2b
ob2o10b4ob13o$o32bobo5bob4o3bo14bo$b33o2bo4b2o4bo3b14o$34bobo7b3obo$b
34ob2o3b3o4b17o$o37bobo2bob2o18bo$b38ob2o2bob19o2$b64o$bo2bo2bo2bo2bo
2bo2bo2bo2bo2bo2bo2bo2bo2bo2bo2bo2bo2bo2bo2bo2bo2bo!

[HerscheltheHerschel]

U-turner without it's first tub destruction:

Code: Select all

x = 36, y = 35, rule = B3/S23
bo$2bo$3o29$33b3o$33b3o$32bobo$32b2o!

4g 9-fold hat (1 glider is omitted):

Code: Select all

x = 53, y = 71, rule = B3/S23
13bo$14bo$12b3o37$36bo3bo3bo3bo$32b2obobobobobobobobob2o$33bobobobobob
obobobobo$33bobobobobobobobobobo$34bo3bo3bo3bo3bo2$30b3o$32bo$31bo21$
3o$2bo$bo!

4g sidewalk (2g for pi):

Code: Select all

x = 14, y = 7, rule = B3/S23
11b3o$4b2ob2o2bo$5bobo3b3o$5bo2bo$3o3bobo$2bo2b2ob2o$3o!

[HerscheltheHerschel]

Why isn't anybody posting??
Anyways, 2g muscle flex (1 glider is omitted):

Code: Select all

x = 11, y = 14, rule = B3/S23
obo$b2o$bo3$4b2ob2o$3bobobobo$3bo3bo2bo$4b3o2b2o2$4b7o$3bo6bo$3bobobo
bo$4b2ob2o!

[confocaloid]

Why isn't anybody posting??

This is an academic forum, not a chat or microblogging platform. Please spend some time doing some research to familiarize yourself with what is and isn't already known about the Game of Life before posting your discoveries. [...]

The target you posted has a 1G destruction:

Code: Select all

x = 14, y = 16, rule = B3/S23
11bobo$11b2o$12bo5$b2ob2o$obobobo$o3bo2bo$b3o2b2o2$b7o$o6bo$obobobo$b2ob2o!

Many small still lives have an one-glider destruction. Those are very easy to find when one exists (just try all possible ways of hitting the target with a glider in Golly). Hence, if you found an 1G destruction of something, most likely there is no reason to post it -- anyone who needs it will be able to find it again.

Very many small still lives have a two-glider destruction where the two gliders arrive one at a time. Those 2G destructions are also too not hard to find in most cases. Try all ways to hit the target with one glider so that there are no escaping spaceships from the collision, and check if the final pattern of the collision has an 1G destruction. So there are not much reasons to post 2G destructions.

Now, if you actually spent some time trying to find an 1G/2G destruction of a small target object, and could not find any, then there are chances that the target is interesting enough to post it.

[b-engine]

11G for B-turner ash (1 glider omitted):

Code: Select all

x = 90, y = 120, rule = LifeHistory
.C$2.C$3C25$88.C$24.C62.C$23.C63.3C$23.3C3$88.C$87.C$34.C42.C9.3C$33.
C42.C$33.3C40.3C6$9.3A52.2A$64.2A4$65.2A$65.2A$50.A$49.A.A$49.2A3$43.
3D13.2A$42.D2.D13.2A$44.D$11.2A3.2A4.2A20.D$11.2A3.2A4.2A2$65.3A3$71.
2A$71.2A2$35.2A$26.A8.2A$26.A$26.A2$22.3A2$26.A$26.A$26.A2$34.2A$34.2A
11$20.3C$22.C$21.C5$54.3C$54.C$55.C12$81.3C$81.C$82.C4$16.3C$18.C$17.
C!

Of course B-turner itself has 2G destruction, but ignore that first:

Code: Select all

x = 30, y = 32, rule = LifeHistory
8.C$7.C$7.3C3$.3E$E2.E$2.E$2.E21$27.3C$27.C$28.C!

[confocaloid]

11G for B-turner ash (1 glider omitted):

9 gliders (only the first 5 are shown, the remaining 4 objects can be deleted one at a time)

Code: Select all

x = 213, y = 221, rule = B3/S23
210bobo$210b2o$211bo26$191bobo$191b2o$192bo16$149bo$147b2o$148b2o71$
18bo$19bo$17b3o20$9bo$9bo53b2o$9bo53b2o4$64b2o$64b2o$49bo$48bobo$48b2o
3$58b2o$58b2o2$10b2o3b2o4b2o$10b2o3b2o4b2o$65bo$65bo$65bo2$70b2o$70b2o
2$34b2o$34b2o$24b3o2$22bo$22bo$22bo2$24b3o3$33b2o$33b2o40$b2o$obo$2bo!

Edit:

I spent some time investigating this target and I don't think it has an 1g or 2g destruction:

Code: Select all

x = 14, y = 9, rule = B3/S23
7b2ob2o$2ob2obobobobo$2ob2obo3bo2bo$7b3o2b2o2$7b7o$2ob2obo6bo$2ob2obob
obobo$7b2ob2o!

Code: Select all

x = 14, y = 14, rule = B3/S23
3bo$4bo$2b3o3$7b2ob2o$2ob2obobobobo$2ob2obo3bo2bo$7b3o2b2o2$7b7o$2ob2o
bo6bo$2ob2obobobobo$7b2ob2o!

[HerscheltheHerschel]

I spent some time investigating this target and I don't think it has an 1g or 2g destruction:

Code: Select all

x = 14, y = 9, rule = B3/S23
7b2ob2o$2ob2obobobobo$2ob2obo3bo2bo$7b3o2b2o2$7b7o$2ob2obo6bo$2ob2obob
obobo$7b2ob2o!

[rutabaga]

I spent some time investigating this target and I don't think it has an 1g or 2g destruction:

Code: Select all

x = 14, y = 9, rule = B3/S23
7b2ob2o$2ob2obobobobo$2ob2obo3bo2bo$7b3o2b2o2$7b7o$2ob2obo6bo$2ob2obob
obobo$7b2ob2o!

Code: Select all

x = 29, y = 31, rule = B3/S23
27bo$26bo$26b3o10$16b2ob2o$9b2ob2obobobobo$9b2ob2obo3bo2bo$16b3o2b2o2$
16b7o$9b2ob2obo6bo$9b2ob2obobobobo$16b2ob2o4$20b3o$20bo$21bo2$3o$2bo$
bo!

here's a 3G destruction I found in 60 seconds. I'll be back if I find 2G

edit: I FOUND 2G by stopping a traffic light from forming

Code: Select all

x = 44, y = 45, rule = B3/S23
17bo$16bo$16b3o10$7b2ob2o$2ob2obobobobo$2ob2obo3bo2bo$7b3o2b2o2$7b7o$
2ob2obo6bo$2ob2obobobobo$7b2ob2o22$41b3o$41bo$42bo!

[Antonin Duda]

One glider destruct of Rob Liston's p16

Code: Select all

x = 16, y = 15, rule = B3/S23
o$b2o$2o4$13b2o$10bo2b2o$9bo4bo$9bo4bo$14bo$8b2obobo$8b2ob2o2$13b3o!

[b-engine]

I think this has 1G destruction, but my best uses 2G:

Code: Select all

x = 41, y = 46, rule = B3/S23
bo$2bo$3o20$14bo$15bo$13b3o7$33bo$32bobo$33bo2$31b5o$30bobo3bo$27bo2b
2o4bo2bo$26bobobo5bobobo$27bo2bo4b2o2bo$30bo3bobo$31b5o2$33bo$32bobo$
33bo!

[May13]

I think this has 1G destruction, but my best uses 2G:

Code: Select all

x = 41, y = 46, rule = B3/S23
bo$2bo$3o20$14bo$15bo$13b3o7$33bo$32bobo$33bo2$31b5o$30bobo3bo$27bo2b
2o4bo2bo$26bobobo5bobobo$27bo2bo4b2o2bo$30bo3bobo$31b5o2$33bo$32bobo$
33bo!

1G destruction:

Code: Select all

x = 17, y = 19, rule = B3/S23
obo$b2o$bo2$9bo$8bobo$9bo2$7b5o$6bobo3bo$3bo2b2o4bo2bo$2bobobo5bobobo$
3bo2bo4b2o2bo$6bo3bobo$7b5o2$9bo$8bobo$9bo!

[hkoenig]

"I think this has 1G destruction"

Note that for an object of size (n x m) of period p, there are at most (p * (4*(n+4) + 4*(m+4))) collisions of a single Glider with that object. Usually far fewer because of symmetry and objects being "rounded", i.e., not extending to all four rectangle corners.

Since the goal isn't a final census, but to find empty space, that's a task that can be done by hand fairly quickly, or easily automated.

Just set up the Glider at one extreme edge, on the path 2 cells beyond the target bounds, run for a few generations. If it doesn't look like it's dying, move to the next Glider path. Repeat until you are past the other extreme edge by 2 cells. Repeat for all eight (or fewer) orientations. Go to the next period if an oscillator.

If there aren't any, then you can still probably find a smaller/simpler object or constellation where you can repeat the process, and which can be removed by a single Glider.

Which is an interesting question. Are there any objects that require a minimum of three Gliders to completely remove?

[confocaloid]

[...]
Which is an interesting question. Are there any objects that require a minimum of three Gliders to completely remove?

I believe every strict still life with 22 or fewer alive cells can be cleanly destroyed with at most two gliders. viewtopic.php?p=168124#p168124

I believe xs19_0g8k48gka53z321 is the unique smallest strict still life that cannot be removed by a p1 slow salvo consisting of two gliders arriving one at a time. viewtopic.php?p=168332#p168332
However, that still life does have a "slow" 2G destruction, with gliders arriving from two different directions:

Code: Select all

x = 45, y = 48, rule = B3/S23
43bo$42bo$42b3o27$3bo$4bo$2b3o10$9b2o$8bobo$3b2o2bobo$2bo2bo2bo$bobo2b
2o$obo$2o!

At some point beyond 22 bits (I don't know when), there should be a strict still life without any "slow" two-glider destruction. No matter how it is hit by one glider, either the collision will release gliders/spaceships escaping to infinity, or else it will be impossible to clean the final pattern by a second glider.

At some point later (I don't know when), there should be a strict still life without any two-glider destruction at all. That is harder to find/verify, because there are many ways how two gliders can hit the target at once.

[hth3]

1G LWSS on HWSS 1

Code: Select all

x = 16, y = 12, rule = B3/S23
12b2o$bo8bo4bo$2bo6bo$3o6bo5bo$9b6o4$9b4o$9bo3bo$9bo$10bo2bo!

1G cis-boat on table

Code: Select all

x = 9, y = 7, rule = B3/S23
7bo$bo4bo$obo3b3o$2o2$4o$o2bo!

2G blinkers bit pole

Code: Select all

x = 12, y = 17, rule = B3/S23
10bo$9bo$9b3o3$5b2o$3obobo2$bobo2bo$o4bo$2o3bo3$7b3o$7bo$8bo!

1G 22P4.3

Code: Select all

x = 13, y = 13, rule = B3/S23
6b2o$6bobo$10b2o$7bo2bo$10b2o$5bobobo2bo$7b2o2b2o$4bob2o$5bo2$3o$2bo$
bo!

1G carrier siamese canoe

Code: Select all

x = 12, y = 10, rule = B3/S23
10bo$9bo$9b3o2$6b2o$7bo$6bo$2b2obo$o2b2o$2o!

[confocaloid]

1G [...]

Please read preceding messages in this thread.
One-glider destructions aren't really noteworthy enough to post them at all.
Glider destructions of small still-life objects can all be considered "known" (enumerated). Most such objects have 1G destructions. More generally, most small low-period objects can be destroyed by one glider or by two gliders arriving one at a time; it is a reasonable expectation to be able to simply try and quickly rediscover any such destruction if and when needed.

[hth3]

2G loafer

Code: Select all

x = 16, y = 15, rule = B3/S23
8b2o2bob2o$7bo2bo2b2o$8bobo$9bo$15bo$13b3o$12bo$13bo$2o12b2o$b2o$o2$9b
3o$9bo$10bo!

2G cis skewed pole

Code: Select all

x = 19, y = 10, rule = B3/S23
bo16bo$2bo13b2o$3o14b2o2$4b2o8b2o$4bo10bo$5bobo4bobo$7b2o2b2o$8bo2bo$
8bo2bo!

[ThePlayzr]

anything that involves deleting objects, such as perturbing, fly-by deletion, puffer stabilization, anything like that.

EDIT by dvgrn: I've merged this new thread with an existing thread with a similar topic.

The problem with posting object deletions one at a time is that we have catalogued (catagolued?) many millions of distinct objects. Every one of them can be deleted. Generally they can be deleted in many different ways. It's generally not difficult to solve any given deletion problem, unless there are specific constraints.

If deletions get posted more or less at random, one object at a time, we could end up with a thread with millions of posts in it, with not much hope of finding any given destruction when it's wanted. It tends to work better when it's possible to build a database of objects, and/or do a compete analysis of some particular category, and post any interesting results from that.

[ThePlayzr]

here is a mwss deleting a block.

Code: Select all

OO
OO
.
....O
..O...O
.O
.O....O
.OOOOO

[ThePlayzr]

anything that involves deleting objects, such as perturbing, fly-by deletion, puffer stabilization, anything like that.

EDIT by dvgrn: I've merged this new thread with an existing thread with a similar topic.

The problem with posting object deletions one at a time is that we have catalogued (catagolued?) many millions of distinct objects. Every one of them can be deleted. Generally they can be deleted in many different ways. It's generally not difficult to solve any given deletion problem, unless there are specific constraints.

If deletions get posted more or less at random, one object at a time, we could end up with a thread with millions of posts in it, with not much hope of finding any given destruction when it's wanted. It tends to work better when it's possible to build a database of objects, and/or do a compete analysis of some particular category, and post any interesting results from that.

ok how about just the smallest known, kind of like the opposite of a glider synthesis? or just put some of them on the fly-by deletion page? also can you at least change the name of this topic to 'glider destruction and fly-by deletion of still lives, oscillators, etc'?

[confocaloid]

There's no need to change the name of this topic. Just "glider destruction" by itself already leads to having way too many easy-to-find solutions.

There's also no need to put such destructions on the wiki. Again, there are way too many examples, neither of them is especially interesting compared to all other examples, and it's easy to rediscover them if/when needed.

The simplified rule of thumb is that, if it is easy to find many examples, then please don't post them.

If you found something that looks like it could be of interest to other people in the local community (i.e. isn't just a typical easy-to-find example), then consider posting it in an already-existing forum thread, for example:
viewtopic.php?f=2&t=576 "Thread for your unsure discoveries"
viewtopic.php?f=2&t=279 "Thread For Your Accidental Discoveries"
viewtopic.php?f=2&t=1141 "Thread For Your Useless Discoveries"
- instead of creating a new thread. In most cases, one should post in an existing thread instead of starting a new one.

[...] ok how about just the smallest known, kind of like the opposite of a glider synthesis? or just put some of them on the fly-by deletion page? also can you at least change the name of this topic to 'glider destruction and fly-by deletion of still lives, oscillators, etc'?

[ThePlayzr]

ok