Gun Discussion Thread

For discussion of specific patterns or specific families of patterns, both newly-discovered and well-known.
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Entity Valkyrie
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Re: Gun Discussion Thread

Post by Entity Valkyrie » December 3rd, 2018, 5:00 am

2718281828 wrote:smallest lwss gun? (population 73)

Code: Select all

x = 49, y = 40, rule = B3/S23
20b2o$20b2o3$21bo$20b3o$19bo3bo$21bo7b2o$18bo5bo4b2o$18bo5bo$19bo3bo$
20b3o9b2o$32b2o$9bo$7bobo19b2o$2o4bobo20b2o$2o3bo2bo$6bobo$7bobo$9bo
29b3o$40bo$38b3o10$40b2o5b2o$40b2o6bo$47bo$37b2o8b2o$37b2o3$40b2o$40b
2o!
The mechanism looks known but I did not see it so far.
Edit1: The mechanism is in jslife p60 guns.
Population 70:

Code: Select all

x = 52, y = 43, rule = B3/S23
20b2o$20b2o4$20b3o$20b3o$19bo3bo$18bo5bo$19bo3bo$20b3o9b2o$32b2o2$9bob
o$7bo3bo23b2o$2o5bo27b2o$2o4bo4bo$7bo24b2o$7bo3bo20b2o$9bobo11$43bo$
42b3o$41bo2b2o2$50b2o$51bo$41b2o7bo$42b3o5b2o$43bo3$43b2o$43b2o!

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2718281828
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Re: Gun Discussion Thread

Post by 2718281828 » December 3rd, 2018, 5:20 am

Entity Valkyrie wrote: Population 70:

Code: Select all

x = 52, y = 43, rule = B3/S23
20b2o$20b2o4$20b3o$20b3o$19bo3bo$18bo5bo$19bo3bo$20b3o9b2o$32b2o2$9bob
o$7bo3bo23b2o$2o5bo27b2o$2o4bo4bo$7bo24b2o$7bo3bo20b2o$9bobo11$43bo$
42b3o$41bo2b2o2$50b2o$51bo$41b2o7bo$42b3o5b2o$43bo3$43b2o$43b2o!
But after one period, (at p=120) your predecessor of the gun did not produce an LWSS, but increases the population to 75 (the glider) excluding the boat. And of course there are multiple ways to remove more cells similarly, e.g. block-> preblock.

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Entity Valkyrie
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Re: Gun Discussion Thread

Post by Entity Valkyrie » December 3rd, 2018, 5:25 am

2718281828 wrote:
Entity Valkyrie wrote: Population 70:

Code: Select all

x = 52, y = 43, rule = B3/S23
20b2o$20b2o4$20b3o$20b3o$19bo3bo$18bo5bo$19bo3bo$20b3o9b2o$32b2o2$9bob
o$7bo3bo23b2o$2o5bo27b2o$2o4bo4bo$7bo24b2o$7bo3bo20b2o$9bobo11$43bo$
42b3o$41bo2b2o2$50b2o$51bo$41b2o7bo$42b3o5b2o$43bo3$43b2o$43b2o!
But after one period, (at p=120) your predecessor of the gun did not produce an LWSS, but increases the population to 75 (the glider) excluding the boat. And of course there are multiple ways to remove more cells similarly, e.g. block-> preblock.
2718281828's gun is a predecessor as well!

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2718281828
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Re: Gun Discussion Thread

Post by 2718281828 » December 3rd, 2018, 5:36 am

Entity Valkyrie wrote:
2718281828 wrote:
Entity Valkyrie wrote: Population 70:

Code: Select all

x = 52, y = 43, rule = B3/S23
20b2o$20b2o4$20b3o$20b3o$19bo3bo$18bo5bo$19bo3bo$20b3o9b2o$32b2o2$9bob
o$7bo3bo23b2o$2o5bo27b2o$2o4bo4bo$7bo24b2o$7bo3bo20b2o$9bobo11$43bo$
42b3o$41bo2b2o2$50b2o$51bo$41b2o7bo$42b3o5b2o$43bo3$43b2o$43b2o!
But after one period, (at p=120) your predecessor of the gun did not produce an LWSS, but increases the population to 75 (the glider) excluding the boat. And of course there are multiple ways to remove more cells similarly, e.g. block-> preblock.
2718281828's gun is a predecessor as well!
I don't think so. After a full p240 cycle I can perfectly remove 2 LWSS.

Code: Select all

x = 49, y = 85, rule = LifeHistory
20.2A$20.2A3$21.A$20.3A$19.A3.A$21.A7.2A$18.A5.A4.2A$18.A5.A$19.A3.A$
20.3A9.2A$32.2A$9.A$7.A.A19.2A$2A4.A.A20.2A$2A3.A2.A$6.A.A$7.A.A$9.A
29.3A$23.2D15.A$23.3D12.3A$22.D.2D$22.3D$23.D7$40.2A5.2A$40.2A6.A$47.
A$37.2A8.2A$37.2A3$40.2A$40.2A41$23.2D$23.3D$22.D.2D$22.3D$23.D!

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calcyman
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Re: Gun Discussion Thread

Post by calcyman » December 3rd, 2018, 9:21 am

Still population 73, but period 184 instead of 120:

Code: Select all

x = 39, y = 63, rule = B3/S23
19bo$17b3o$16bo$16b2o$30bo$28b3o$27bo$27b2o$21bo$21bo3$21bo$20b2o$19b
2o$20bobo$2b2o17b2o12bob2o$bobo31b2obo$bo$2o8$6b2o$5bobo$5bo$4b2o4$31b
2o$31b2o8$24b3o3b3o$23bo2bo3bo2bo$23b2obo3bob2o16$24b2o5b2o$24b2o5b2o!
What do you do with ill crystallographers? Take them to the mono-clinic!

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Entity Valkyrie
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Re: Gun Discussion Thread

Post by Entity Valkyrie » December 6th, 2018, 2:51 am

Sokwe wrote:
It's disappointing in a way. The original gun was so clever, and yet we could have done this all along.
That is most likely because no-one knew that 87P26 (or 53P13) had a spark, and even so, no-one knew it was capable of eating gliders.

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