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Hi Matthias,

You wrote:

There are of course several ways to measure spaceship height. Your method seems like it may (or may not?) be slightly different than Keith's moving box method, which is of course different from the all-phases definition. I'm especially curious to know if anyone can confirm ...

Hi all,

I was thinking about getting my spaceship search programs (knight*) up and running again, so I was checking out the general state of affairs in spaceship searches. I was checking out the "Spaceship Search Status Page" and I noticed there was a discussion about a year ago about whether there ...

I added another block destroyer to the 49 X 49 sawtooth diehard giving a lifetime of 149794021404732:

x = 49, y = 49, rule = B3/S23
b2ob2o10bo2b3o12b3o10b2o$bo3bo8bo2b3o4b2o2b2obo2bo2bo7b2obo$bobo4b2o5b
o7b3o7b2ob2o8bobo$8b2o11b2o2b2o2b2o16bo$20bobo2b2o4b2o14b2o$2o9b2ob2o
14b2o15bo$3o8b2obo27b2o ...

Hello All,

I was thinking of ways to reduce the size of the minimal sawtooth based diehard. The size is currently sitting at 53 X 53.

I found a way to retract the offside capping eater on the upper left Simkin gun by 3 cells instead of the current 2 cells. I also realized that replacing the block ...

Hi All,

This produces 13096 loaves in 60 X 60 (parity only needs to be attended to for long streams of lone block laying gliders):

x = 60, y = 60, rule = B3/S23
11b6o2b4ob4ob2o25bob2o$13bo7b4obobo2bo10b3o12b3o$17bo6bobo2bo5bo5bo2bo
14bo$12b5o6bo3bobo4bob2obo4bo11b2obo$14b2o21bobo15bob3o ...

Hi All,

The following 112 X 89 diehard has two more levels to the tetration before the second fuse light. Its lifetime should be lower bounded by 13^^^3:


x = 112, y = 89, rule = B3/S23
5b3o85b4o$7bo42b2o49b2o4bo$6bo24bo3b2o3b2o9bo33b2o8b2o4bo4bobo$30bobo
2bo4bo2bo7bobo6b2o22b2o5b2o9bo4bobo ...

Hi All,

On my first post to this thread I mentioned that I tried to start the diehard by sending a glider over the top and that I couldn't get it to work. I found a way to make that work:

x = 112, y = 89, rule = B3/S23
2o19b8o20b12o4b5o2bo15b2o15bo$b2o19bo4bo22bo3b2o8b2obob4obo13b2o8b2o5b
o ...

Hi All,

I appreciated Calcyman's suggestion to use the empty space to put some tubs back. I investigated this and it turns out that triggered still lives that deposit something a distance away, while avoiding obstructions are extremely rare. This is due to the explosive nature of anything that ...

Hi All,

Minor improvement:

x = 112, y = 89, rule = B3/S23
21b8o20b12o4b5o2bo15b2o15bo$22bo4bo22bo3b2o8b2obob4obo13b2o8b2o5bo$44b
2o4bo4b2o9b4o27bo2bo4bo$45bo4b2o46b2o8b2o$45bobo8bo3bo24b2o21bobo$46b
2o3bob2obo2bo25b2o22bo$51b2o6b3o3b2o$40b3o8b2o12b2o21b2o8bo$31b2o6b3o
46b2o6b3o4b2o ...

Hi All,

I saw toroidalet's failed example of using a blockic. I noticed that little white dot turning a tub to a boat. So I investigated what was going on.

I found the apparently excellent long tub with tail block destroyers were the bomb in more ways than one (they have a pitch of 3 diagonals ...

Hi All,

I was thinking that it would be really nice to do a few first sawtooth pulls before lighting the first fuse. Also, as Toroidalet noted the the delays down and to the left of the three glider collision are the least valuable use of area (except the vast open space with nothing in it). So I ...

Hi All,

Forget my suggestion that we rephase the Simkin guns and buckaroos.

It occurred to me that the fuse light on the first fuse doesn't need to delete the block. We delete the first few salvo's heading down to the second sawtooth down and to the left of the 3 glider collision.

So I modified ...

Hi All,

Toroidalet wrote
Speaking of, I don't really see any ways forward at the moment. It looks like we'll need a miracle for any ignition reaction we have to fit inside y=89; the closest is the +4 crabstretcher-tail-tub-with-tail, which will maybe get us to 90 if we find a new cleanup with the ...

Hi toroidalet,

Here are 3 different fuse lighters with 2 versions of the last one. I have timed none of them:

x = 62, y = 269, rule = B3/S23
$bo57bo3$57bobo$57b2o$58bo17$41bo2b2obob2o$39b3o2bob2ob2o$38bo$37bobo$
36bobo$35bobo$34bobo$33bobo$32bobo$31bobo$30bobo$29bobo$28bobo$27bobo$
26bobo$25bobo ...

Hi All,

Dean: This whole effort is a great exercise in resource management. We have limited area and we can spend it on a variety of efforts like single use infrastructure, multi-use infrastructure, in isolation to generate delay, in conjunction with infrastructure to generate multipliers of delay ...

b3s23love: And I was incorrect about your contribution. The 507 is the number of loaves and you increased their number by 10, so you increased a 497 in the equation to 507.

This also means that I was incorrect in my estimate of the second fuse loaves with my inclusion of 2 toads. It should be 121 ...

b3s23love: I ran your first fuse pull in Golly and it appears clean. The loaves ended at around -505300 505400.

Have a happy day,

-Tim Coe

Hi All,

b3s23love: I imagine that calcyman has a pile of equations and analysis similar to the equations I posted a in my 8:13am post yesterday. As for your contribution it changed the 505 loaf count equation to 507. I will be dropping that back to 505 at the end of this post because I am going to ...

Hi All,

I found a way to ignite a fuse with a pull. The configurations of still lives that do the lighting are actually fairly common. The difficult parts in getting it to work were working around the unmovable eater (required for C/5 spaceship destruction) and getting the phase right so the burn ...

Hi All,

So I was using still lives to generate destruction of Simkin guns and a C/5 ship. It occurred to me that I could select still lives to do anything I could manage to code for. The thing that I thought would be interesting to do would be to bounce gliders of a C/5 ship without the ...

Hi All,

So, I speculated as to what the minimum area that could be achieved to create an exponential diehard. I feel a proper exponential diehard would be based on Sawtooth195. So I set about making a diehard out of Sawtooth195.

The most difficult part of the construction of a diehard is the ...

Hello All,

I haven't posted for a few years, but I have been lurking and enjoying the great variety of discoveries posted.

This diehard thread really interested me and I am hopeful that I can make some contributions.

I tried to improve on calcyman's latest diehard in the 10000 area that is the ...

John Conway's passing is very sad to hear. He has had quite an influence on my life for almost 45 years.

I first read the Scientific American article in 1975. I squared off a large piece of paper and tried to work out the evolution of life patterns using poker chips. I was 12 at the time. I wrote ...

Kazyan and Sokwe,

A while back I posted some of the first ships that came out of a c/6 odd symmetric search started at width 19 and continued at width 17. This search continued and finally completed and found more ships. I looked through the output file and saw a matching several rows with Sokwe's ...

Sokwe,

It is really cool that you found a way to use my ship to support Stephen Silver's 16 year old wave.

I did complete a c/7 width 19 gutter search with no ships found. I don't have the longest partial handy, but I believe it was about 100 rows. This means that the minimum width for c/7 gutter ...