For discussion of specific patterns or specific families of patterns, both newly-discovered and well-known.

Extrementhusiast wrote:A B-heptomino turns into an MWSS via the power of love:
`x = 12, y = 13, rule = B3/S238b2obo\$9b3o\$10bo5\$b2ob2o\$obobobo\$o2bo2bo\$bobobo\$2bobo\$3bo!`

Heart also converts MWSS to glider (one time converter):
`x = 15, y = 37, rule = B3/S238b2obo\$9b3o\$10bo5\$b2ob2o\$obobobo\$o2bo2bo\$bobobo\$2bobo\$3bo19\$11bo\$10bobo\$9bobobo\$8bo2bo2bo\$8bobobobo\$9b2ob2o!`
knightlife

Posts: 566
Joined: May 31st, 2009, 12:08 am

p19 gun can push a blinker:
`x = 353, y = 309, rule = 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I Like My Heisenburps! (and others)

Extrementhusiast

Posts: 1712
Joined: June 16th, 2009, 11:24 pm
Location: USA

On a preliminary trial run of apgsearch, I found a 16-by-16 soup that emits a LWSS on HWSS:

`#C SHA-256(2014-08-25T14:40:14.544000_apg2688771) in a 16-by-16 box:x = 16, y = 16, rule = B3/S23o2bo2b3obo2bobo\$4o4b4o3bo\$2b4o4bo3b2o\$obobo5bo4bo\$2bo2bo2bobo2bo\$2o3bo2bobob3o\$4o2bob8o\$ob4obo2bobob2o\$bob2ob2o5b3o\$bobob3o3bobobo\$obobob4o2b4o\$bob3ob3ob2obo\$bob2o3bo2bob2o\$2bo4bo4bo2bo\$ob3obob2o2bo2bo\$bobo3b4ob3o!`

Another soup produces both a Figure-8 and pulsar:

`x = 16, y = 16, rule = B3/S232ob4obob3o\$2bob6o3b3o\$obo2bobobobo2bo\$2bob3obo4bo\$3o2b9obo\$obo3bob2o2bob2o\$2bob5ob6o\$bob6ob5o\$3bob2ob2obo\$2bobo2b2o5bo\$b2o2bo2b2obobobo\$bo2bobo3bo2bo\$obob2ob6ob2o\$bo2bob2o2b4o\$4b3o6bobo\$2b3obo3b2obo!`

Temporary MWSS and permanent mold:

`x = 16, y = 16, rule = B3/S23o5bob3o2bobo\$o2bo2b5o\$4ob2o3b2o2b2o\$obobob2obo4b2o\$5bo2bo3b4o\$2o4b5o3bo\$b4o2b2obobob2o\$2o3bob2o2b2ob2o\$3ob2o2bob2o\$bobobob7obo\$ob3o6b4o\$8b3o2bo\$obo2b2o2bob2o\$4bo2b3obob3o\$3bob2obo3b2o\$b3ob2o4b4o!`
What do you do with ill crystallographers? Take them to the mono-clinic!

calcyman

Posts: 1693
Joined: June 1st, 2009, 4:32 pm

calcyman wrote:On a preliminary trial run of apgsearch, I found a 16-by-16 soup that emits a LWSS on HWSS.

I think this is now the 5th "natural" spaceship (after the standard spaceships).
-Matthias Merzenich
Sokwe
Moderator

Posts: 1307
Joined: July 9th, 2009, 2:44 pm

Indeed. It suggests that Schick engines may be able to form naturally, just by some convenient junk being in the right place at the right time.

I've also amended a couple of bugs in apgsearch, so it now distinguishes nearby (but disjoint) standard spaceships, and correctly scores soups (there was a typo). More results coming soon...

By the way, I'll be releasing this census script when it's nicely polished. It can process around 100 soups per (second . core . GHz), so a modern 4-core PC can pretty easily process 1000 soups per second. I'm waiting until after setting up a server to collect these results, though. And until after I've done some more rigorous testing (at the moment it's almost definitely 99.999999% reliable at identifying objects, but it would be nice to add a couple more nines to that).
What do you do with ill crystallographers? Take them to the mono-clinic!

calcyman

Posts: 1693
Joined: June 1st, 2009, 4:32 pm

calcyman wrote:Another soup produces both a Figure-8 and pulsar:

Not surprisingly, it is the same reaction between lumps of muck and pi as here:
`x = 13, y = 9, rule = B3/S23b3o\$3o\$10b2o\$10bobo\$11bo2\$7b3o\$7bobo\$7bobo!`
Ivan Fomichev

codeholic
Moderator

Posts: 1140
Joined: September 13th, 2011, 8:23 am
Location: Hamburg, Germany

Here are some more natural occurrences. MWSS and two pulsars:

`x = 16, y = 16, rule = B3/S232ob2o2b4o2b2o\$bobo2bo2bobob3o\$2bob6o4b2o\$o4bo3bobobobo\$2bo3bo5b2obo\$b2ob2obob2obob2o\$ob2obob3obo3bo\$bo3bobob2o4bo\$o2b2ob3ob2o2b2o\$b3ob6ob2o\$2o2bo2bo2bobobo\$3b2ob3o2bo2bo\$2o2b2o3b2ob4o\$bo2b2o3bob5o\$bob3o6b3o\$2o3bob2o4bo!`

Trans-queen-bee-shuttle emerges around generation 1500 and stabilises itself by swallowing a nearby block:

`x = 16, y = 16, rule = B3/S235o7bo2bo\$obo2bobob4o2bo\$2o3b3o3b4o\$2obo2bo4bob3o\$o2bo2bobobob3o\$o2bob2o2bobob3o\$o4bob2ob2ob2o\$2bo2bobob3ob2o\$b2ob2o9bo\$2b3o2b2o2bo\$b3o3bo4b3o\$2o2b3obo2b4o\$2bo3b5obob2o\$b2ob4o3b3o\$2bobobo2bo2b4o\$ob3obobo5bo!`

Anti-methuselah quickly stabilises into a block, blinker, and blocker:

`x = 16, y = 16, rule = B3/S23o4b3o2bo2bo\$6o2bobobo2bo\$ob4o2b2o3b3o\$bobo2b4ob2ob2o\$b4obob2ob2ob2o\$3bob3o3b4o\$2b2ob7o3bo\$6ob2o2bo3bo\$3ob2ob4o\$b4o3bo3b2o\$2obo2b4o2b2o\$b2obob6o3bo\$2o2b4o4b3o\$obo5bo3bo\$obob2obobob2ob2o\$ob2obob2o4bobo!`

Weird nine-bit inductor on beacon; doesn't appear in Achim's census results:

`x = 16, y = 16, rule = B3/S23o3b2ob3obo3bo\$obobo3b2obo\$2b5o4b4o\$obo2b3obob4o\$2b4obo3bo\$5b2o2bob5o\$ob5obob2ob3o\$3bob2ob2ob4o\$3o2bob2o3bo\$2obob3o3bob3o\$ob2o2b2o2bob4o\$4o3b2ob2obo\$o3b4o4bobo\$ob2obo2bob2obo\$obo3b3o3b4o\$b3ob2obob3obo!`
What do you do with ill crystallographers? Take them to the mono-clinic!

calcyman

Posts: 1693
Joined: June 1st, 2009, 4:32 pm

Single soup has three pulsars in its final census, one in each phase. As a result, the population is eventually constant (which is rare for soups containing pulsars!).

`#C sha256(2014-08-28T00:12:56.438000_apg1129223)x = 16, y = 16, rule = B3/S232b2o4b2ob2ob2o\$o3b3o2bo4b2o\$o5bobo4bo\$2bo2bo2bo2bob2o\$bob2o3b2o2bob2o\$2bo2b2o2bo3b3o\$3bobo6b4o\$bo3b2ob2ob4o\$3o2b3o4b3o\$ob4o4b3o\$b2ob3o2b5obo\$5bo2b3ob2obo\$bo3b3ob2obo\$2o3b10o\$o2b3o3bob2ob2o\$2obo3b3o2b3o!`
What do you do with ill crystallographers? Take them to the mono-clinic!

calcyman

Posts: 1693
Joined: June 1st, 2009, 4:32 pm

After the "Traffic light turns a loaf" reaction, I decided to look for more TL+L reactions that re-create a loaf: here's some (I put some that were already known)
`x = 103, y = 78, rule = LifeHistory20F2.21F5.20F\$F18.F2.F19.F5.F18.F12.18F\$F5.A12.F2.F19.F5.F18.F12.F16.F\$F5.3A10.F2.F19.F5.F18.F12.F16.F\$F8.A9.F2.F19.F5.F12.D5.F12.F16.F\$F7.2A9.F2.F13.CD4.F5.F11.DAC4.F12.F2.2A6.2A4.F\$F18.F2.F12.C.AD3.F5.F10.DA.DA3.F12.F2.2A5.A2.A3.F\$F18.F2.F12.AD.C3.F5.F11.DC.A3.F12.F10.A.A3.F\$F10.2A6.F2.F13.AC4.F5.F13.A4.F12.F11.A4.F\$F9.A2.A5.F2.F10.D8.F5.F18.F12.F8.D7.F\$F10.A.A5.F2.F9.3D7.F5.F10.D7.F12.F7.3D6.F\$F11.A6.F2.F10.D8.F5.F9.3D6.F12.F8.D7.F\$F18.F2.F6.CA11.F5.F10.D7.F12.F4.2D10.F\$F6.2D.D8.F2.F5.C.DA10.F5.F18.F12.F3.D2.D9.F\$F5.D2.3D7.F2.F5.DA.C10.F5.F7.A10.F12.F4.D.D9.F\$F6.D.2D8.F2.F6.DC11.F5.F6.A.CD8.F12.F5.D10.F\$F7.D10.F2.F19.F5.F6.AD.AD7.F12.F16.F\$F18.F2.F19.F5.F7.CAD8.F12.F16.F\$F18.F2.F19.F5.F8.D9.F12.F16.F\$F18.F2.21F5.F18.F12.18F\$F18.F28.20F\$20F4\$21F56.26F\$F19.F56.F24.F\$F19.F56.F24.F\$F19.F.44F11.F24.F\$F19.F.F42.F11.F24.F\$F19.F.F42.F11.F24.F\$F9.D9.F.F42.F11.F24.F\$F8.3D8.F.F42.F11.F3.A20.F\$F2.2D4.4D7.F.F42.F11.F3.3A18.F\$F.D2.D4.2D3.2A3.F.F34.D7.F11.F6.A6.D10.F\$F2.D.D8.A2.A2.F.F33.D8.F11.F5.2A5.3D9.F\$F3.D10.A.A2.F.F33.3D6.F11.F13.D10.F\$F15.A3.F.F42.F11.F24.F\$F19.F.F42.F11.F17.2D5.F\$F19.F.F42.F11.F11.2A3.D2.D4.F\$F19.F.F42.F11.F10.A2.A3.D.D4.F\$F19.F.F42.F11.F11.A.A4.D5.F\$21F.F42.F11.F12.A11.F\$22.F42.F11.F24.F\$22.F42.F11.F24.F\$22.F42.F11.F9.2A13.F\$22.F42.F11.F9.2A13.F\$22.F42.F11.F24.F\$22.F42.F11.F24.F\$22.F42.F11.26F\$22.F42.F\$22.F42.F\$22.F42.F\$22.F14.D27.F\$22.F13.3D26.F\$22.F14.D27.F\$22.F42.F3.34F\$22.F7.D34.F3.F32.F\$22.F6.D.D6.2A25.F3.F13.2A17.F\$22.F5.D2.D5.A2.A24.F3.F13.2A17.F\$22.F6.2D7.A.A24.F3.F32.F\$22.F16.A25.F3.F32.F\$22.F42.F3.F32.F\$22.F42.F3.F32.F\$22.F42.F3.F32.F\$22.F25.3D14.F3.F18.D6.2A.2A2.F\$22.F25.D16.F3.F17.3D5.2A.2A2.F\$22.F26.D15.F3.F18.D13.F\$22.F42.F3.F32.F\$22.F42.F3.F11.D20.F\$22.F42.F3.F10.D.D6.2A11.F\$22.F42.F3.F9.D2.D5.A2.A10.F\$22.F42.F3.F10.2D7.A.A10.F\$22.F42.F3.F20.A11.F\$22.44F3.F32.F\$69.F32.F\$69.F32.F\$69.34F!`
This is game of life, this is game of life!
Loafin' ships eaten with a knife!
towerator

Posts: 328
Joined: September 2nd, 2013, 3:03 pm

One of Jason Summers' p27 oscillators can be supported by still lifes that eat blocks a la eater 3:
`x = 55, y = 38, rule = B3/S234b2o\$5bo14b2o\$5bobo12bobob2o\$6b2o14bobo\$22bobo\$22bobob2o\$b2o7b3o7bobobo2bo\$bobo6bobo8bo3b2o\$3bo6b3o9b3o\$3b3o9b3o6bo\$b2o3bo8bobo6bobo10b2o\$o2bobobo7b3o7b2o4b2o5bo\$2obobo25bobob3o\$3bobo27bobo\$3bobo27bo\$2b2obobobo23bobo\$6b2ob3o9b3o7bobob3o\$12bo8bobo8bo5bobo5bo\$11bo2bo6b3o9b3obob2o4bobo\$11bob3o10b3o6bobo8bo\$9b2o4b2o9bobo6bobo\$10bob2o3bo8b3o7bo7b5o\$10bo2bobob3o24bo4bo\$11bo2bobo3bo26bo2bo\$12b2o2bo2b2o26b2obo2bo\$16b2o26bo5bobobo\$23b2o7b3o8bobo4bo2bo\$23bobo6bobo8bo2bo2b2o\$25bo6b3o9b2o\$25b3o9b3o\$23b2o3bo8bobo\$22bo2bobobo7b3o\$22b2obobo\$25bobo\$25bobo14b2o\$24b2obobo12bobo\$28b2o14bo\$44b2o!`

Here's the smallest such oscillator:
`x = 28, y = 18, rule = B3/S234b2o\$5bo14b2o\$5bobo12bobob2o\$6b2o14bobo\$22bobo\$22bobob2o\$b2o7b3o7bobobo2bo\$bobo6bobo8bo3b2o\$3bo6b3o9b3o\$3b3o9b3o6bo\$b2o3bo8bobo6bobo\$o2bobobo7b3o7b2o\$2obobo\$3bobo\$3bobo14b2o\$2b2obobo12bobo\$6b2o14bo\$22b2o!`
-Matthias Merzenich
Sokwe
Moderator

Posts: 1307
Joined: July 9th, 2009, 2:44 pm

6-glider synthesis of still life containing glider+hat->inductor:
`x = 24, y = 17, rule = Life\$2.A\$.A\$.3A2\$2.3A\$4.A\$3.A\$20.A\$7.3A8.2A\$7.A11.2A\$8.A6.2A\$14.2A\$4.A11.A\$4.2A\$3.A.A!`
I like making rules
fluffykitty

Posts: 332
Joined: June 14th, 2014, 5:03 pm

Pi + heisenburp glider -> eater + block

`x = 9, y = 10, rule = B3/S236b2o\$6bobo\$6bo5\$3o\$2bo\$3o!`

Kazyan

Posts: 752
Joined: February 6th, 2014, 11:02 pm

### New spaceship detected?

Hi everyone!
I'm new to this forum and to Conway's Game of Life in general. Some days ago I've coded my own implementation of the Game of Life (using the original rulestring) for fun and yesterday I was doing some simulations. In the last of them I put some cells randomly and after a while I saw a spaceship. Today I did a quick research on pentadecathlon.com (http://pentadecathlon.com/objects/class ... php?part=1) but I didn't find such a spaceship. It is made up of 17 cells and travels without changing its shape. I can't provide a RLE or MCell file describing this spaceship because my software is a very elementary version of Conway's Game of Life but I made some screenshots and a video that shows how this spaceship travels through the space. Here I attached a screenshot in which each pixel represents a live cell and the spaceship is the structure pointed out by the blue ellipse, if you need the video I'll upload it somewhere and provide here the link. Has someone seen this spaceship before?
Attachments
Each pixel represents a live cell, the spaceship is pointed out by the blue ellipse.
Spaceship.png (93.19 KiB) Viewed 10296 times
GTP

Posts: 4
Joined: September 9th, 2014, 8:37 am

### Re: New spaceship detected?

GTP wrote:... I put some cells randomly and after a while I saw a spaceship... It is made up of 17 cells and travels without changing its shape... Has someone seen this spaceship before?

Interesting! You won't find such a spaceship on pentadecathlon.com, because your program clearly isn't running the standard rules for Conway's Life, B3/S23 -- new birth with three neighbors, survival with two or three neighbors.

It would take some serious detective work to figure out which rule is actually being used, so that

`x = 5, y = 92o\$2bo\$b2o\$2b2o2\$bobo\$bob2o\$2b3o\$3b2o!`

travels "without changing its shape", but the rule generally creates complex maze-like patterns. Can you explain more about what transition rules your program is applying?

A video really isn't necessary, though probably it would make it possible to figure out the rule.

dvgrn
Moderator

Posts: 4849
Joined: May 17th, 2009, 11:00 pm

dvgrn wrote:You won't find such a spaceship on pentadecathlon.com, because your program clearly isn't running the standard rules for Conway's Life

Hmmm, I intended to use the B3/S23 rule... So it appears that I did a mistake somewhere in my source code? I just did a quick check but seems ok, I'll do a deeper check as soon as I can. All I can tell you is that using my rule this type of spaceship appears to be very common: Yesterday I obtained one or two similar structures using an initial random pattern. Another information is that population grows very fast in the first generations and the this growth slows down and forms a sort of "big cloud" on the screen. The bad news is that I also checked the video I made and I found out that you can't see pixels as good as in the screenshot, so it mades harder to find out the actual rule from the video. But I also made other videos when I obtained similar structures so I will check which of them has the best quality and I will upload it and post here the link. Thank you for your help and interest!
GTP

Posts: 4
Joined: September 9th, 2014, 8:37 am

You're not running NaiveLife, are you? (The one where you update cells sequentially in rows from left-to-right then top-to-bottom, rather than updating all cells simultaneously.)
What do you do with ill crystallographers? Take them to the mono-clinic!

calcyman

Posts: 1693
Joined: June 1st, 2009, 4:32 pm

Symmetrical predecessor of, among other things, two cis shillelaghs (!):
`x = 20, y = 13, rule = B3/S232bo14bo\$bobo12bobo\$o3bo10bo3bo\$bobo12bobo\$2bo14bo2\$2b2o12b2o\$bo16bo5\$3b3o8b3o!`

Table and misplaced block give LWSS:
`x = 5, y = 6, rule = B3/S23bo2bo\$b4o3\$2o\$2o!`
I Like My Heisenburps! (and others)

Extrementhusiast

Posts: 1712
Joined: June 16th, 2009, 11:24 pm
Location: USA

codeholic wrote:Not surprisingly, it is the same reaction between lumps of muck and pi as here:

A slightly different reaction with two honeyfarm predecessors, also involving lumps of muck at a later stage:
`x = 21, y = 12, rule = B3/S2319b2o\$19b2o5\$16bobo\$7b2o6bo2bo\$6bo2bo7b2o\$b2o2b2ob2o\$o2bobo2bo\$b2o3b2o!`
Ivan Fomichev

codeholic
Moderator

Posts: 1140
Joined: September 13th, 2011, 8:23 am
Location: Hamburg, Germany

### Re: New spaceship detected?

calcyman wrote:You're not running NaiveLife, are you? (The one where you update cells sequentially in rows from left-to-right then top-to-bottom, rather than updating all cells simultaneously.)

Yes, this is exactly the way I update cells in my program. Do you think this is the explanation for the spaceship I posetd before?
GTP

Posts: 4
Joined: September 9th, 2014, 8:37 am

Ok, I think that calcyman has solved the mystery. I'll fix my program
GTP

Posts: 4
Joined: September 9th, 2014, 8:37 am

Makes a funky 22 cell still life. Found with apgsearch.
`x = 27, y = 1520bo\$21bo\$6bo12b3o\$5bobo\$5bobo\$6bo\$\$boo7boo\$obbo5bobbo\$boo7boo\$\$6bo18bo\$5bobo16bobo\$5bobo16boo\$6bo!`
-Josh Ball.

velcrorex

Posts: 339
Joined: November 1st, 2009, 1:33 pm

beacon + blinker precursor -> 2 pis -> 2 LWSSs with a lot of junk. Probably not useful.
Also found by apgsearch.

`x = 16, y = 16, rule = B3/S232obo2b2o2bobobo\$o3bobo5b2o\$2ob3o2bob2ob3o\$o2bobob2o\$o2bo2b3ob3o2bo\$obobobo2b2ob2o\$5b2ob4obobo\$2o3bobobobob2o\$4o3bobo2bob2o\$o2b2o2b2o2bo\$obo5b5ob2o\$3bo2b3o4bo\$b6obo2bo3bo\$obo3bob3obob2o\$o3bo2bobob2o2bo\$2b2o3bobo5bo!`
Best wishes to you, Scorbie

Scorbie

Posts: 1358
Joined: December 7th, 2013, 1:05 am

velcrorex wrote:Makes a funky 22 cell still life. Found with apgsearch.
`x = 27, y = 1520bo\$21bo\$6bo12b3o\$5bobo\$5bobo\$6bo\$\$boo7boo\$obbo5bobbo\$boo7boo\$\$6bo18bo\$5bobo16bobo\$5bobo16boo\$6bo!`

Eight-glider synthesis based on that:
`x = 16, y = 22, rule = B3/S233bobo\$4b2o\$4bo5\$3b2o9bo\$4b2o7bobo\$3bo9bobo\$14bo\$8b3o\$8bo\$3o6bo\$2bo\$bo4b3o\$8bo\$7bo2\$10b2o\$9b2o\$11bo!`
I Like My Heisenburps! (and others)

Extrementhusiast

Posts: 1712
Joined: June 16th, 2009, 11:24 pm
Location: USA

Scorbie wrote:beacon + blinker precursor -> 2 pis -> 2 LWSSs with a lot of junk. Probably not useful.
Also found by apgsearch.

I'm not sure these soup results are going to count as "accidental discoveries" for much longer -- there are going to be so many of them!

Maybe they should have their own thread... but really I think it will take a little more organization than that, to get the server set up to collect larger volumes of data. It will also be good to have a way to retrieve the source soup for any unusual still life or oscillator (not just the top 50 or 100 highest scoring).

I'm already getting to where I'm a lot less interested in highest-scoring combination of two pulsars and an LWSS (for example) than in the unusual still lifes. There are dozens in every million-soup run, but there's quite a bit of overlap between runs -- I've seen the symmetrical 28-cell

`x = 10, y = 10, rule = B3/S235bo\$4bobo\$3bo2bo\$2bob2ob2o\$bobo2bo2bo\$o2bo2bobo\$b2ob2obo\$3bo2bo\$3bobo\$4bo!`

a couple of times already, for example. So of course I'm really most interested in the still lifes that nobody has ever seen floating in the soup before... and for that we'll need a central server.

-- While I'm wishing, a central database of known glider constructions would be nice, too. I'm seeing a good scattering of 17- to 20-cell still lifes, for example -- but unless I know that one of them is very difficult to glider-construct or has no known recipe, it's most likely an easy known construction, so probably not worth going back to find the soup that the still life came from.

dvgrn
Moderator

Posts: 4849
Joined: May 17th, 2009, 11:00 pm

dvgrn wrote: It will also be good to have a way to retrieve the source soup for any unusual still life or oscillator (not just the top 50 or 100 highest scoring).

Maybe we could add another column into the census table, which lists the seed/number for the first soup which generates each pattern (a bit like the 'lseed' listed in censuses made by Andrzej Okrasinski's screensaver).

Lewis

Posts: 316
Joined: March 17th, 2009, 5:26 pm
Location: UK

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