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### c/8 orthogonal spaceships

Posted: **June 26th, 2015, 8:43 pm**

by **unname66609**

Now with several new versions of search programs out and PCs still getting more powerful, it might be time to revisit this topic:

Are there any serious search results out there? Promising intermediate results? Ideas?

### Re: c/8 orthogonal spaceships

Posted: **June 26th, 2015, 10:12 pm**

by **kiho park**

That is already mentioned.

Also, you can find incomplete result at

here.

- Recent search result -

Code: Select all

```
#P 0 0
#R S23/B3
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....**........................
..*...*.......................
..*.....**....................
...*...***....................
....**....*...................
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....**.....*......*...........
....*..*...*.*....**..........
.....*...*....****............
.......***...*...*............
.......**....*.***............
........*.**.**.*.............
........**..*.**..............
............*.................
...........***................
..........**.*................
........*.**..................
........*.*...................
........**....................
.........*....................
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```

### Re: c/8 orthogonal spaceships

Posted: **June 26th, 2015, 11:38 pm**

by **Bullet51**

kiho park wrote:That is already mentioned.

Also, you can find incomplete result at

here.

- Recent search result -

That's a diagonal partial.

### Re: c/8 orthogonal spaceships

Posted: **June 28th, 2015, 12:39 am**

by **kiho park**

Bullet51 wrote:That's a diagonal partial.

Oops. Sorry, It's recent processing WinLifeSearch search result.

### Re: c/8 orthogonal spaceships

Posted: **July 31st, 2015, 6:32 pm**

by **velcrorex**

No miracles today, but I may as well post a promising partial. I searched for width 16 symmetric c/8 ships and found nothing. The search (with gfind) took about 3 weeks. Here's a promising partial:

Code: Select all

```
x = 14, y = 35, rule = B3/S23
o12bo$2o3b4o3b2o$6b2o$3o8b3o$14o$b2o2b4o2b2o$2bo8bo$2b3o4b3o$bo
2bo4bo2bo2$bo3b4o3bo$5bo2bo$b2o3b2o3b2o$obo2bo2bo2bobo$2ob3o2b3o
b2o$b3o6b3o$2bo8bo3$b3o6b3o3$bo2bo4bo2bo$o3bo4bo3bo$bo2bo4bo2bo$
2b4o2b4o$3b8o$4bo4bo$4bo4bo$4b2o2b2o$6b2o$b2o8b2o$o2bo6bo2bo$bob
o6bobo$2bo8bo!
```

You'll see which part I think is promising.

With a lot of luck, someone will invoke some arcane magic and complete this ship.

### Re: c/8 orthogonal spaceships

Posted: **August 1st, 2015, 4:35 am**

by **Sokwe**

That's a nice looking partial pattern, although I haven't yet been able to get anything from it. There seem to be several ways for the blinkers to react to get the same outcome, which gives some hope of a solution:

Code: Select all

```
x = 30, y = 27, rule = B3/S23
2$13bo8bo$12bobo6bobo$11bo2bo6bo2bo$12b3o6b3o$13b2o6b2o$14bo6bo$13b2ob
4ob2o$14bobo2bobo$13b4o2b4o$14bo6bo$11bo3bo4bo3bo$11b2ob3o2b3ob2o$14b
2o4b2o2$13bo8bo$13bo8bo2bo$13bo8bo2bo$11bo12bo$10bobo11b2o$10bobo$13bo
!
```

### Re: c/8 orthogonal spaceships

Posted: **February 18th, 2016, 4:42 pm**

by **muzik**

Sokwe wrote:That's a nice looking partial pattern, although I haven't yet been able to get anything from it. There seem to be several ways for the blinkers to react to get the same outcome, which gives some hope of a solution:

Code: Select all

```
x = 30, y = 27, rule = B3/S23
2$13bo8bo$12bobo6bobo$11bo2bo6bo2bo$12b3o6b3o$13b2o6b2o$14bo6bo$13b2ob
4ob2o$14bobo2bobo$13b4o2b4o$14bo6bo$11bo3bo4bo3bo$11b2ob3o2b3ob2o$14b
2o4b2o2$13bo8bo$13bo8bo2bo$13bo8bo2bo$11bo12bo$10bobo11b2o$10bobo$13bo
!
```

Old thread I know, but can I suggest a name for it? Double Loafer

### Re: c/8 orthogonal spaceships

Posted: **March 8th, 2016, 9:21 am**

by **muzik**

An interesting thing to note is that the copperhead, without its block, also decays into an interchange:

Code: Select all

```
x = 23, y = 42, rule = B3/S23
4$3b3o6b3o3$3bo2bo4bo2bo$2bo3bo4bo3bo$3bo2bo4bo2bo$4b4o2b4o$5b8o$6bo4b
o$6bo4bo$6b2o2b2o$8b2o$3b2o8b2o$2bo2bo6bo2bo$3bobo6bobo$4bo8bo11$7bo2b
o$4b2obo2bob2o$6b2o2b2o2$7b4o$6b6o2$7b4o$8b2o!
```

However, to bomb this party entirely too prematurely, the interchanges don't appear from exactly the same predecessors. They also appear in different places relative to the spaceship.

Nevertheless, I believe that the c/8 will rely on some sort of block hauling technology.

### Re: c/8 orthogonal spaceships

Posted: **March 9th, 2016, 11:23 am**

by **muzik**

No more promising reactions found, which probably is a major fault of by hand searches.

There is a way to destroy this completely, moving the blinkers down by one spot, which could make for some eaters or new speeds:

Code: Select all

```
x = 14, y = 19, rule = B3/S23
2bo8bo$bobo6bobo$o2bo6bo2bo$b3o6b3o$2b2o6b2o$3bo6bo$2b2ob4ob2o$3bobo2b
obo$2b4o2b4o$3bo6bo$o3bo4bo3bo$2ob3o2b3ob2o$3b2o4b2o2$2bo8bo$2bo8bo$2b
o8bo2$2b3o4b3o!
```