ConwayLife.com

Posted: **December 20th, 2015, 1:12 pm**

Nothing too exciting, but a spartan version of the *WSS -> G may be possible along these lines:

x = 95, y = 90, rule = LifeHistory
68.A$68.3A$71.A7.A$70.2A7.3A$64.A5.5B7.A$63.A.A6.4B5.2A$63.A.A5.6B4.
4B$61.3A.2A3.2B2A4B5.B2A$60.A10.A2BA3B4.BA.A$61.3A.2AB3.A2BA2B2A3.B2A
$63.A.2AB2.2B2A3B2A2B.3B3.2A$67.16B5.A$67.19BA.A$65.21B2A$65.21B$62.
2B.21B$61.2A19B2A2B$61.2A18BA2BAB$62.2B.17B2A2B.B5.2A$65.24B4.A$65.
26BA.A$66.6B2.8BDBD6B2A$67.4B2.9BDBD6B$66.4B2.10B3D6B$65.4B.21B$64.4B
.22B$63.4B3.21B$62.4B6.18B$61.4B8.16B$60.4B9.15B$59.4B9.16B$58.4B9.
17B$57.4B9.19B$56.4B9.4B.14B$55.4B9.4B2.14B$54.4B9.4B5.11B$53.4B9.4B
6.7B$52.4B9.4B7.7B$51.4B9.4B6.10B$50.4B9.4B7.8BD2B$49.4B9.4B3.2A2.7B
3D3B$48.4B9.4B4.A2.9BD3B$47.4B9.4B6.3A12B$46.4B9.4B9.AB.12B.2A$14.A
30.4B9.4B8.2AB2.12BA.A$14.3A27.4B9.4B9.A5.10B.BA$17.A25.4B9.4B8.A.A7.
8B$16.2A8.2A14.4B9.4B9.2A8.8B$16.5B5.A14.4B9.4B22.7B$18.4B.BA.A13.4B
9.4B23.6B$11.B4.6B.B2A13.4B9.4B24.6B$10.2AB.10B14.4B9.4B25.D2B2D$10.
2A12B13.4B9.4B27.3D$11.B.11B12.4B9.4B29.D$13.13B3.4B2.4B9.4B$11.2B.
12B2.5B.4B9.4B$10.2A25B9.4B$10.2A24B9.4B$11.B.B.20B9.4B$14.20B2.B6.4B
3.B.7B$13.26B3.17B$12.28BD19BD$13.21B2A3B5D15BDB$13.21B2A2BD19B2D2B$
8.2C4.25B2D14B2A2B2D2B$9.C4.26B2D13B2A3BD2B$9.C.CB.28BD2.2B3.11B$10.
2CB.13B.13B10.10B$12.15B2.9B16.6B$12.4B.10B3.7B19.3B$13.14B4.5B22.B$
14.12B5.4B23.2A$15.11B4.4B25.A$15.11B3.4B25.A$16.9B3.4B26.2A$16.9B2.
4B$16.9B.4B$16.13B$17.11B$18.9B$18.8B$19.2B2A2B$20.A2BAB$2.2C14B.2B2A
2B$C.3BC18B$2.4BC14B2.B2A$C5BC15B.BA.A$.6C15B4.A$.20B5.2A$3.16B!

Posted: **December 22nd, 2015, 10:59 pm**

Pi-to-glider and two variants of a pi-to-pi:

Code: Select all

x = 103, y = 73, rule = LifeHistory
41.2A$41.2A3$63.2A$64.A$63.A$64.3A$66.A3$47.3C$47.C.C$47.C.C$39.A.2A$
37.3A.2A$36.A$37.3A.2A14.2A$39.A.A15.2A$39.A.A$40.A24$19.A$16.A2.3A$
16.3A3.A73.A$19.3A72.3A$14.4A.A73.A$14.A2.2A74.2A5$27.3D70.3D$29.D72.
D$27.3D70.3D7$11.3C70.3C$11.C.C70.C.C$11.C.C70.C.C$3.A.2A69.A.2A$.3A.
2A67.3A.2A$A72.A$.3A.2A14.2A51.3A.2A14.2A$3.A.A15.2A53.A.A15.2A$3.A.A
70.A.A$4.A72.A!

I currently don't know of any way to get a signal in, but HF95P comes closest to working, interfering with the eater 2 further back on both sides.

EDIT: And here's a pi-to-R:

Code: Select all

x = 27, y = 21, rule = LifeHistory
10.2A$10.A5.2A$11.3A.A.A5.2A$13.A.A6.A.A$14.2A6.A$21.2A$20.A$20.3A$
23.A$22.2A2$2A$2A2$15.3C$15.C.C$10.D4.C.C5.2A$10.3D10.A.A$11.D13.A$
15.2D8.2A$15.2D!

This might end up being useful if the indicated block (beehive, pond, etc.) could be restored at the indicated place, by catalyzing the R in some way. (The block at left just deletes a beehive, which could also be used to interact with the R.)

Posted: **December 26th, 2015, 10:43 am**

Has anybody noticed that this old discovery can be used as a G18 to pi?

Code: Select all

x = 40, y = 25, rule = B3/S23
2b2o$2bobo$4bo$4b2o3$7b2o$7b2o2$8bo$7b2o$7bobo8b2o$2o9bo6b2o$2o$10bo2b
o$32bo$12bo2bo15b2o$31bobo$14bo2bo17bo2$16bo2bo14bo2bo2$18bo2bo14bo2bo
2$20bo17bo!

Posted: **December 26th, 2015, 8:32 pm**

A G3-G based on a recent find in the Unsure Discoveries thread:

Code: Select all

x = 39, y = 42, rule = LifeHistory
18.A$16.3A$15.A$15.2A$B11.5B$2B9.4B$3B7.7B$4B3.10B$.4B.12B$2.18B$3.
17B$4.17B$5.17B$4.19B$5.18B$5.19B$6.19B$8.11B2C5B4.2A$9.10B2C5B.2BA.A
B$9.18B.B2A2B$8.12BA10B.B2A$8.11B2A7B4.BA.A$9.B.8BABA7B6.A$10.20B.B3.
2A$11.18B.B2A$9.22B2A$9.2A.17B.2B$10.A3.12B.2B$7.3A5.12B$7.A7.8B.4B$
17.5B3.4B$17.6B3.4B$17.6B4.4B$18.2B.4B3.4B$16.4B3.2A4.4B$16.2A5.A6.4B
$17.A6.3A4.4B$14.3A9.A5.4B$14.A18.4B$34.2B2A$35.BA.A$36.A!

Posted: **December 26th, 2015, 8:52 pm**

A for awesome wrote:A G3-G based on a recent find in the Unsure Discoveries thread:

Ekk... Sorry to tell you that it's a G2-G and it has been long known...

Code: Select all

x = 556, y = 61, rule = LifeHistory
78.11D$74.19D$72.23D$70.27D169.D$22.13D33.30D104.13D52.D$18.20D6.6D
17.32D99.20D6.6D35.3DB77.D82.D79.D$16.25D2.8D15.34D96.25D2.8D35.4B77.
D80.2BD79.D$14.37D14.36D93.37D36.4B74.3DB79.3DB76.3DB$12.40D13.37D90.
40D36.4B74.4B79.4B76.4B$11.41D12.38D89.41D37.4B74.4B79.4B76.4B$9.43D
11.17D7.16D86.43D38.4B74.4B79.4B76.4B$8.44D11.14D12.14D85.44D39.4B74.
4B79.4B76.4B$7.45D10.14D15.13D83.45D40.4B74.4B79.4B76.4B$6.46D10.13D
17.12D32.6D44.46D41.4B74.4B79.4B76.4B$6.18D10.18D10.12D19.11D31.9D42.
18D10.18D42.BD2B74.4B79.4B76.4B5.4B$5.16D16.15D10.11D20.12D29.12D39.
16D16.15D43.BD2B74.4B79.4B76.4B5.4B$4.15D20.13D9.12D21.11D29.13D37.
15D20.13D42.3D3B74.BD2B79.BD2B76.BD2B5.4B11.A$4.14D22.12D10.11D21.11D
29.15D35.14D22.12D43.6B74.BD2B79.BD2B76.BD2B5.4B8.3A$3.14D24.11D10.
10D22.11D29.17D32.14D24.11D44.6B72.3D3B77.3D3B74.3D3B5.4B6.A$3.13D25.
11D11.8D22.12D29.19D30.13D25.11D45.6B6.2A64.6B11.B.2B62.6B74.6B5.4B5.
2A$2.13D26.11D12.6D23.12D29.21D27.13D26.11D46.6B4.B2AB64.6B9.5B63.6B
74.6B5.4B2.4B$2.12D28.9D41.13D31.20D26.12D28.9D48.6B3.3B66.6B8.7B62.
6B6.2A66.6B5.4B.2B$.13D28.9D40.13D33.21D23.13D28.9D49.6B3.B.B66.6B6.
9B.B56.B3.6B3.2B2AB66.6B5.7B$.12D31.6D40.14D35.21D21.12D31.6D51.12B
66.6B6.7B.B2A55.2B3.6B2.4B68.6B5.6B$.12D76.15D37.21D19.12D89.13B65.6B
5.9B2A55.3B3.6B.5B68.6B5.5B$.11D76.15D40.20D18.11D91.13B65.6B3.8B.2B
4.A51.4B3.12B68.6B3.8B7.A$.11D75.16D17.45D16.11D92.14B64.16B5.3A52.4B
3.13B67.16B5.3A$12D74.16D18.47D13.12D93.14B62.18B3.A56.4B3.13B65.18B
3.A$12D72.17D19.49D11.12D94.3B2A9B61.9BA10B.2A56.4B3.14B63.9BA10B.2A$
12D71.17D20.50D10.12D90.B2.3BA2BA10B58.2A7BABA12B57.4B3.14B61.2A7BABA
12B$11D71.17D21.52D8.11D89.9B2A12B57.2A7BABA10B60.4B3.3B2A9B60.2A7BAB
A10B$11D70.17D22.54D6.11D88.17B2A6B57.B.7BA12B60.4B.3BA2BA10B59.B.7BA
12B$11D17.26D26.17D23.52D8.11D17.26D46.16B2A8B58.18B.B60.8B2A12B61.
18B.B$11D15.29D24.17D24.50D10.11D15.29D44.27B7.2A50.20B60.14B2A6B61.
20B$11D14.31D21.18D25.49D11.11D14.31D43.28B6.A51.20B58.16B2A8B59.20B$
11D14.31D20.18D26.47D13.11D14.31D45.28B.BA.A52.18B59.26B7.2A51.18B$
11D14.31D19.18D51.21D15.11D14.31D45.28B.B2A54.5B2A10B57.2AB.25B6.A53.
5B2A10B$12D13.31D18.17D51.21D17.12D13.31D46.B.B2.24B56.5B2A11B55.A.AB
4.24B.BA.A53.5B2A11B$12D13.31D16.18D51.21D18.12D13.31D47.3B2.23B57.
19B53.A7.24B.B2A55.19B$12D13.31D15.18D50.21D20.12D13.31D46.B2AB2.23B
58.19B51.2A9.24B58.19B$.11D14.29D15.18D49.21D23.11D14.29D48.2A4.21B
60.18B63.23B59.18B$.11D16.26D15.18D49.20D25.11D16.26D53.2AB.B.16B61.
19B62.23B59.19B$.11D29.11D16.17D49.20D27.11D29.11D54.A.AB2.16B63.17B
64.21B61.17B$.12D28.11D14.18D50.19D28.12D28.11D54.A6.2B2.11B64.17B61.
2AB.B.16B63.17B$2.11D28.11D13.18D51.17D31.11D28.11D53.2A11.10B65.17B
59.A.AB2.16B65.16B$2.12D27.11D12.17D53.15D33.12D27.11D66.9B66.18B58.A
6.2B2.11B65.18B$2.13D26.11D11.17D54.13D35.13D26.11D67.7B69.12B.4B56.
2A11.10B67.12B2.2A$3.13D25.11D9.18D55.12D37.13D25.11D69.B.4B69.10B3.
4B68.9B69.10B3.A$3.15D23.11D8.18D57.9D39.15D23.11D72.4B68.7B7.4B68.7B
70.7B7.3A$4.16D19.13D8.16D20.6D34.6D42.16D19.13D73.4B69.4B9.4B69.B.3B
72.4B10.A$4.20D11.17D8.44D80.20D11.17D74.4B66.5B11.4B72.B2A68.5B$5.
47D8.44D81.47D75.4B65.2A15.4B71.BA.A67.2A$6.46D8.45D81.46D76.4B65.A
16.4B73.A68.A$7.45D8.45D82.45D77.4B61.3A94.2A64.3A$8.44D8.45D83.44D
78.3B61.A162.A$9.42D9.45D84.42D80.2B$10.39D11.45D85.39D83.B$12.35D13.
45D87.35D$15.30D15.45D90.30D$18.24D18.45D93.24D$23.14D166.14D!

See also: Herschel receiver

Oh, oops...

Posted: **December 27th, 2015, 6:44 pm**

Before I invest search time: Is it practical to search for a superfast 2G_odd->X for the new singleton glider mechanism?

Code: Select all

x = 127, y = 19, rule = B3/S23
11b2o6b2o40b2o6b2o40b2o6b2o$11b2o6bo41b2o6bo41b2o6bo$17bobo47bobo47bob
o$17b2o48b2o48b2o$9b2o48b2o48b2o$3b2o3bo2bo41b2o3bo2bo41b2o3bo2bo$3bo
4bobo42bo4bobo42bo4bobo$2obo5bo4b2o34b2obo5bo4b2o34b2obo5bo4b2o$o2bob
2o7bobo33bo2bob2o7bobo33bo2bob2o7bobo$2b2obo8bo37b2obo8bo37b2obo8bo$5b
o49bo49bo$5b2o48b2o48b2o3$125bo$20b2o102b2o$20bobo46b2o53bobo$20bo48bo
bo$69bo!

So that you could achieve proximity at the cost of parity.

Posted: **January 1st, 2016, 11:51 am**

This seems nice. Is it known?

Code: Select all

x = 25, y = 18, rule = B3/S23
5b2o$5b2o3$4bo$3bobo$4bo$b3o$bo$23b2o$23b2o$5bo$5bobo$5b3o12b2o$7bo12b
obo$22bo$2o20b2o$2o!

More to come.

EDIT: Another one:

Code: Select all

x = 22, y = 25, rule = B3/S23
4b2obo$4bob2o2$5b5o$2o2bo4bo$o2bo2bo$bobob2o13b2o$2obo5bo10b2o$3bo4bob
o$3b2o2bo2bo$8b2o6$8bo$8bobo$8b3o$10bo2$3b2o$3b2o$20b2o$20b2o!

And here are the other candidates:

Code: Select all

x = 831, y = 223, rule = B3/S23
9bo$8bobo$8bobo$9bo6$21b2o$21b2o$3bo$3bobo$3b3o16b2o$5bo16bo$23b3o$25b
o19$68bo$68b3o$71bo$15bo54b2o$15b3o$18bo$17b2o7$60bo$60bobo$7bo52b3o$
7bobo52bo11b2o$7b3o64bo$9bo11b2o32b2o18b3o$21bo33b2o20bo$2b2o18b3o$2b
2o20bo30$12bo$11bobo$11bobo$12bo8$6bo$6bobo$6b3o$8bo2$b2o14b2o$b2o14bo
2bo$15bobob2o$14bob2o$14bo3b3o$15b3o3bo$18b2obo$15b2obobo$15bo2bo$17b
2o22$11bo$10bobo$10bobo$11bo8$5bo$5bobo$5b3o$7bo2$2o$2o6$23bo$20bobobo
$20b2o2bo$24b2o$20b2o$21bo2b2o$21bobobo$22bo21$814bo$814b3o$817bo$100b
o79bo79bo79bo79bo79bo79bo79bo79bo75b2o$16bo34bo48b3o77b3o77b3o77b3o77b
3o77b3o77b3o77b3o77b3o$16b3o32b3o49bo79bo79bo79bo79bo79bo79bo79bo79bo$
19bo34bo47b2o78b2o78b2o78b2o78b2o78b2o78b2o78b2o78b2o$18b2o33b2o5$806b
o$806bobo$806b3o$92bo79bo79bo79bo79bo79bo79bo79bo79bo75bo$8bo34bo48bob
o77bobo77bobo77bobo77bobo77bobo77bobo77bobo77bobo$8bobo32bobo46b3o77b
3o77b3o77b3o77b3o77b3o77b3o77b3o77b3o66b2o26b2o$8b3o32b3o48bo79bo79bo
79bo79bo79bo79bo79bo79bo66b2o21b2obo2bo$10bo34bo777bobob3o$87b2o78b2o
78b2o78b2o78b2o78b2o78b2o78b2o78b2o94bobo$3b2o33b2o47b2o78b2o78b2o78b
2o78b2o78b2o78b2o78b2o78b2o92b3ob5o$3b2o33b2o780bo3bo4bo$180bo639b4o2b
o$109bo69bobo165b2o318b2obo76b2o74bob2o$108bobo68b2o166bobo225b2ob2o
87b2ob3o73bo2bo2b2ob2o63b2obo$109bo239bo226bobo94bo72bobo4bobobo63bobo
$349b2o225bobo88b2ob2obo73bo5bo2b2o61bobob2o$19b2o245b2o153b2o152b2obo
b2o86bob2ob2o75b2obo65b2o$19b2o33b2o210bo155bo80b2o70bo2bobo2bo84bo81b
o2b5o$54b2o211b3o149b3o81bo2bo70b2obob2o85b3ob2o72bo4bo4bo$269bo149bo
81bobob2o73bobo88bob2o72b5o2bo$500bob2o76bobo168bob2o$500bo3b3o72b2ob
2o163b2o2bo5bo$501b3o3bo239bobobo4bobo$504b2obo240b2ob2o2bo2bo$501b2ob
obo249b2o$501bo2bo$503b2o!

Posted: **January 1st, 2016, 12:16 pm**

Scorbie wrote:This seems nice. Is it known?
...
EDIT: Another one...

Hmm, there's some interesting stuff here. It will take some work to figure out if the various potential outputs can really connect to anything.

The tub-with-tail looks like it can be replaced by a regular fishhook eater in almost all cases. Suppressing the Herschel's first natural block with an eater3 looks like it does something significantly different. I've added the two standard eater positions below (from F117 and Fx77) for comparison:

Code: Select all

x = 112, y = 60, rule = LifeHistory

76.2A.A$76.A.2A2$77.5A$72.2A2.A4.A$10.2A60.A2.A2.A$10.2A61.A.A.2A13.

2A$72.2A.A5.A10.2A$75.A4.A.A$9.A65.2A2.A2.A$8.A.A69.2A$9.A$6.3A$6.A$

28.2A$28.2A$10.C69.C$10.C.C67.C.C$10.3C12.2A53.3C$12.C12.A.A54.C$27.A

$5.2A20.2A46.2A$5.2A68.2A$92.2A$92.2A7$30.2A$31.A63.4B$18.A11.A64.5B$

18.3A9.2A65.4B$21.A9.B23.B42.4B$8.2A10.2A9.3B19.4B22.A19.4B$9.A10.5B

5.6B16.5B22.3A12.B.3B.4B$9.A.AB9.4B3.10B11.7B25.A10.18B$10.2AB.3B4.6B

2.11B3.2B2.10B24.2A3.B5.2B2A11BD4B$12.7B.13B2A15BD6B24.8B3.2B2A9B3D4B

$12.21B2A15BDBD4B26.8B.13BDBD4B$13.37B3D4B26.22BD6B$12.40BD4B25.15B.

2B2.10B$10.46B24.17B8.7B$8.18B.B3.13B.4B29.18B11.5B$8.2BC13B7.7B.B4.

4B30.2BC15B12.4B$7.3BCBC4B.6B19.4B30.3BCBC4B.7B15.B$8.2B3C4B2.B.5B16.

4B32.2B3C13B$7.5BC4B7.2A15.4B32.5BC14B$6.10B8.A15.4B32.10B2.8B$5.2A2B

16.3A11.BA2B32.2A2B11.6B$4.B2AB19.A10.2A2B32.B2AB12.5B$3.4B32.2A32.4B

14.4B$2.4B66.4B15.4B$5B66.4B17.B.B2A$70.4B20.BA.A$70.3B24.A$70.2B25.

2A$70.B!

[[ THUMBNAIL ]]

Several of the reactions in the larger stamp collection look familiar, but either my memory isn't what it used to be or there are a lot more elementary conduits to memorize nowadays. Probably both.

Posted: **January 1st, 2016, 4:36 pm**

dvgrn wrote:Several of the reactions in the larger stamp collection look familiar, but either my memory isn't what it used to be or there are a lot more elementary conduits to memorize nowadays. Probably both.

The third one is the beginning of F117, and I've posted the first and fourth ones here before:

Extrementhusiast wrote:An unexpected near miss, with the tightest space I've ever seen a Herschel fit into:
Code: Select all
x = 17, y = 23, rule = LifeHistory
15.2A$15.A$13.A.A$9.2A2.2A$9.2A4$6.D$4.D.D$4.3D$4.D4$.2A$A2.A$.2A3$
12.3C$13.C$11.3C!

Extrementhusiast wrote:A very simple periodic conduit, HFx55Bp4/5/6/7/8/others:

Code: Select all

x = 186, y = 43, rule = LifeHistory
11.D39.D39.D39.D39.D$10.3D37.3D37.3D37.3D37.3D$10.D.2D36.D.2D36.D.2D
36.D.2D36.D.2D5$3.2A38.2A38.2A38.2A38.2A$3.A39.A39.A39.A39.A$A4.A34.A
4.A34.A4.A34.A4.A34.A4.A$6A34.6A34.6A34.6A34.6A2$2.2A38.2A38.2A38.2A
38.2A$2.A39.A39.A39.A39.A$A.A16.2A19.A.A16.2A19.A.A16.2A19.A.A16.2A
19.A.A16.2A$2A16.A2.A18.2A16.A2.A18.2A16.A2.A18.2A16.A2.A18.2A16.A2.A
$19.2A38.2A38.2A38.2A38.2A3$7.3D37.3D37.3D37.3D37.3D$8.D39.D39.D39.D
39.D$8.3D6.A.A28.3D7.2A28.3D6.A2.A27.3D37.3D6.A.A$20.A36.4A39.A34.2A
43.A$16.A2.A36.A4.A34.A4.A33.2A39.A4.A2.2A$15.A.A.A35.2A4.2A33.2A2.A.
A33.A3.A.3A31.2A.A2.A.2A$15.A2.A36.2A4.2A38.A.2A30.A3.6A35.2A$16.2A
38.A4.A72.A6.A$57.4A74.5A$58.2A41.A2.A$101.2A34.5A$136.A6.A$137.A3.6A
$138.A3.A.3A$137.2A$137.2A3$9.2A38.2A38.2A38.2A38.2A$9.2A38.2A38.2A
38.2A38.2A2$8.C7.A.2A28.C7.A.2A28.C7.A.2A28.C7.A.2A28.C7.A.2A$7.3C6.
2A.A27.3C6.2A.A27.3C6.2A.A27.3C6.2A.A27.3C6.2A.A$7.C.2C36.C.2C36.C.2C
36.C.2C36.C.2C!

For the fifth one, I do know of an eater placement that gets rid of one of the blocks:

Code: Select all

x = 30, y = 31, rule = LifeHistory
11.A$10.A.A$10.A.A$11.A8$5.A$5.A.A$5.3A$7.A2$2A24.2A$2A24.A.A$28.A$
28.2A4$23.A$20.A.A.A$20.2A2.A$24.2A$20.2A$21.A2.2A$21.A.A.A$22.A!

However, I don't know of a stable way to get rid of the other block.

(Now find the hidden pi.)

Posted: **January 1st, 2016, 8:04 pm**

@dvgrn If you use the fishhook eater, a boat suddenly pops out and it's not easy to clean (pretty weird). Also that eater3 is not just doing trivial block eating... At least Ihaven't found any 1-catalyst that could replace the eater3.

Posted: **January 1st, 2016, 11:04 pm**

Scorbie wrote:@dvgrn If you use the fishhook eater, a boat suddenly pops out and it's not easy to clean (pretty weird).

Only if you use the wrong fishhook eater, though. Check the F117 and Fx77 comparison above -- the pattern on the left remains identical with the F117's active reaction below it, until the interaction with the next catalyst.

To put it another way, here's the no-boat version I was describing on the left, compared with the boat you described, on the right:

Code: Select all

x = 75, y = 17, rule = LifeHistory
3.2A49.A$4.A49.3A$4.A.A50.A$5.2A49.2A5$23.2A48.2A$23.2A48.2A$5.A49.A$
5.A.A47.A.A$5.3A12.2A33.3A12.2A$7.A12.A.A34.A12.A.A$22.A49.A$2A20.2A
26.2A20.2A$2A48.2A!

Eater in F117 position on the left, and Fx77 position on the right. The difference is subtle, but information about the position of the eater is communicated through the active reaction at near lightspeed. As you say, it's a weird effect, and it's tripped me up more times than I really want to admit...!

Scorbie wrote:Also that eater3 is not just doing trivial block eating... At least I haven't found any 1-catalyst that could replace the eater3.

Yes, didn't mean to imply that the Fx77-position eater was doing the same thing as the eater3 -- it's significantly different -- just that it's generally worth checking any catalyst placed in the vicinity of the first natural block, against both of those eater placements, to make sure that there's no equivalence.

Posted: **January 1st, 2016, 11:38 pm**

@dvgrn EEK... My bad

Didn't know there were two of the eaters and read your sentence wrong about the eater3. Oops...

Posted: **January 2nd, 2016, 12:01 am**

Scorbie wrote:@dvgrn EEK... My bad Didn't know there were two of the eaters and read your sentence wrong about the eater3. Oops...

Well, I should probably have been less vague about the eater3. And those two eaters are really tricky.

I think my worst confusion was one time when I got the wrong eater on an L156 somehow. Have a look: the next two catalysts still seem to work fine, and it's only after that point that the wrong eater placement has an effect -- a mysterious blow-up almost twenty cells away from the problem:

Code: Select all

x = 82, y = 63, rule = LifeHistory
23.2A$22.A2.A$23.2A4$22.8B32.8B$21.10B30.10B$22.9B31.9B$22.9B31.9B$
23.4B3DB32.4B3DB$24.4BD2B33.4BD2B$24.2B3D2B33.2B3D2B$25.6B34.6B$25.7B
33.7B$25.8B32.8B$26.8B32.8B$26.9B31.9B$25.6B.4B29.6B.4B$25.7B.4B28.7B
.4B$26.6B2.4B28.6B2.4B$26.6B3.4B27.6B3.4B$26.6B4.4B26.6B4.4B$25.8B4.
4B24.8B4.4B$24.8B6.4B22.8B6.4B$24.9B6.3B22.9B6.3B$24.9B7.2B22.9B7.2B$
23.10B8.B21.10B8.B$23.3B2A5B8.B21.3B2A5B8.B$22.4B2A5B29.4B2A5B$22.11B
29.11B$17.2A.A12B24.2A.A12B$17.A.2A2.8B26.A.2A2.8B$24.7B4.2A27.7B4.2A
$25.6B4.A29.6B4.A$25.6B.BA.A29.6B.BA.A$24.7B.B2A29.7B.B2A$25.8B32.8B$
18.A6.7B26.A6.7B$18.3A4.7B26.3A4.7B$9.A11.A2.7B4.B12.2A11.A2.7B4.B$9.
3A8.2A3.6B.B.2BA12.A10.2A3.6B.B.2BA$12.A7.15BA.A11.A.AB7.15BA.A$11.2A
3.B5.12B.BA13.2AB.B.B5.12B.BA$11.8B2.13B18.7B2.13B$13.21B18.22B$13.
20B20.20B$12.19B21.19B$10.21B19.21B$8.23B17.23B$8.2BC14B5.B2A15.2BC
14B5.B2A$7.3BCBC4B.6B6.BA.A13.3BCBC4B.6B6.BA.A$8.2B3C4B2.B.5B7.A14.2B
3C4B2.B.5B7.A$7.5BC4B7.2A7.2A12.5BC4B7.2A7.2A$6.10B8.A21.10B8.A$5.4B
16.3A17.4B16.3A$4.4B19.A16.4B19.A$3.4B36.4B$2.4B36.4B$.4B36.4B$4B36.
4B$3B37.3B$2B38.2B!

For a good while I was half convinced that the laws of the Life universe had changed, and L156 conduits no longer worked...

Posted: **January 2nd, 2016, 10:01 am**

Scorbie wrote:Before I invest search time: Is it practical to search for a superfast 2G_odd->X for the new singleton glider mechanism?... So that you could achieve proximity at the cost of parity.

Sorry, didn't notice this question a few days ago -- and I'm not sure I understand it now. This would be part of a memory loop circuit holding a single-lane construction recipe? Maybe with a recovery time less than 90?

For there to be parity issues, it seems like the leading glider would have to be produced by some kind of gun -- but a p120 gun would be too slow, and any faster gun would limit the relative timings of gliders in the single-lane recipe, which I _think_ would more than erase any gains from a faster circuit. So I'm probably guessing wrong and you're not thinking about a gun.

If you're planning to generate tandem gliders to populate a recipe memory loop, then maybe it makes sense to start at the transmission side instead of the receiving side. If a tandem-glider output can be found, in the H-to-Gn stamp collection or elsewhere, that has a low recovery time and makes a likely looking active reaction out of the blinker, then it might make sense to run a search based on that.

In that situation there wouldn't be any parity issues, because the tandem gliders would have a fixed relative position -- the first glider makes the blinker and the second one operates on it and gets back to stable again. Pretend example:

Code: Select all

x = 64, y = 64, rule = LifeHistory
17.D3.D.D3.D2.3D4.D3.5D3.D4.3D3.3D$17.2D2.D.D3.D.D3.D2.2D5.D4.2D3.D3.
D.D3.D$17.D.D.D.D3.D5.D3.D5.D5.D7.D.D2.2D$17.D2.2D.D.D.D3.2D4.D5.D5.D
6.D2.D.D.D$17.D3.D.D.D.D5.D3.D5.D5.D5.D3.2D2.D$17.D3.D.2D.2D.D3.D3.D
5.D5.D4.D4.D3.D$17.D3.D.D3.D2.3D3.3D4.D4.3D2.5D2.3D4$17.D3.D.D3.D2.3D
2.5D.5D3.D4.3D3.3D$17.2D2.D.D3.D.D3.D.D7.D4.2D3.D3.D.D$17.D.D.D.D3.D
5.D.D7.D5.D7.D.D$17.D2.2D.D.D.D4.D3.3D4.D5.D6.D2.4D$17.D3.D.D.D.D3.D
7.D3.D5.D5.D3.D3.D$17.D3.D.2D.2D2.D4.D3.D3.D5.D4.D4.D3.D$17.D3.D.D3.D
.5D2.3D4.D4.3D2.5D2.3D8$51.A$29.2A9.2A7.3A$27.2B2AB7.B2AB5.A$27.4B5.
2B2.3B5.2A$26.7B2.7B.B.5B$27.21B$26.23B$24.25B$23.27B$22.28B$21.29B$
20.4B2.22B.B2A.A$19.4B2.4B.16B3.B2AB3A$19.3B2.4B3.2B.10B7.B4.A$19.2B
2.4B9.7B7.2A.3A$19.B2.4B9.11B5.A.A$21.4B10.12B4.A.A$20.4B11.12B5.A$
19.4B13.11B$A18.3B12.4B.4B3CB$3A31.2A4.4BC2B$3.A31.A4.2B3C2B$2.2A28.
3A6.6B$32.A8.7B$43.B.4B$46.4B$47.4B$2A46.2B2A$2A3.A43.BA.A$4.A.A45.A$
4.A2.A44.2A$5.2A2$8.A2.A$8.4A$5.A$5.5A$9.A$7.A$7.2A!

This H-to-Gn definitely doesn't work, but it has a nice recovery time (80) and there wouldn't be any parity issues if it did work -- the next tandem glider could have even or odd relative timing.

I suppose you'd have parity problems if you applied the gliders in the other order -- first one hits blinker and makes an output signal, second one restores the blinker. That could work if the tandem gliders were farther apart. But in that case is it likely that the tandem glider transmitter would recover in less than 90 ticks?

If the transmitter were big and complicated and included an edge shooter for the second glider, it could easily recover in say 78 ticks... but that would be a pain to use in self-constructing circuitry, for sure, and then we still have the parity problem, to say nothing of the chirality problem.

(Chirality problem = only one of the two mirror-image orientations of the tandem-glider transmitter will work. By Murphy's Law, usually this turns out to be a horrible layout headache.)

I think we'll just have to re-run toolkit searches for each actual transceiver we find, to see if there's a universal set of one-lane construction elbow operations. It's certainly plausible that if we could handle signals spaced 60+2N ticks apart, the faster recovery time would make up for the parity problem. I kind of doubt that we'd do more than barely break even in that case, but we're going to have to put together a dedicated search program to find out for sure.

We need the search program anyway, to see how far simeks' toolkit can be extended! More elbow ops are certainly out there waiting, and probably more elbow types as well.

Posted: **January 3rd, 2016, 10:45 am**

Partial results for 3-catalyst Herschel searches. Includes known ones and variants of known ones.
The H-to-C seems to be ExtremeEnthusiatst's, and the clean H-to-B is yet another variant.

Code: Select all

x = 40, y = 452, rule = B3/S23
30bob2o$4b2o22b3ob2o$5bo13b2o6bo$5bobo11b2o6bob2ob2o$6b2o18b2ob2obo$
32bo$26b2ob3o$26b2obo4$6bo$6bobo$6b3o$8bo2$b2o$b2o33$18b2o$18b2o8$24b
2o$24b2o$6bo$6bobo$6b3o$8bo2$b2o$b2o2$22b2o$22b2o30$24b2o$24bo$22bobo$
22b2o5$24b2o$24b2o$6bo$6bobo$6b3o$8bo2$b2o$b2o2$20b2o$20bo$21b3o$23bo
29$30b2o$30bo$28bobo$28b2o6$28b2o$27bo2bo2b2ob2o$27bobo4bobobo$28bo5bo
2b2o$31b2obo$6bo24bo2b5o$6bobo19bo4bo4bo$6b3o19b5o2bo$8bo23bob2o$28b2o
2bo5bo$b2o25bobobo4bobo$b2o15b2o9b2ob2o2bo2bo$18b2o17b2o49$18bobo$17bo
b2o$17bo$16b2ob2o$19bo$16b2obo$16bobo5$23b2o$23bobob2o$25bobo$24b2obo$
27bob2o$24b4o2bo$24bo3bo4bo$25b3ob5o$27bobo$27bobob3o$28b2obo2bo$33b2o
3$5bo$5bobo$5b3o$7bo$19b2o$2o17bo$2o18b3o$22bo26$18b2o$18b2o15$6bo$6bo
bo$6b3o$8bo2$b2o17b2o$b2o17bo$21b3o$23bo28$18b2o$18b2o5$4b2o$5bo$5bobo
$6b2o7$6bo$6bobo$6b3o$8bo2$b2o$b2o20b2o$23b2o27$14bo$14b3o$4b2o11bo$5b
o10b2o$5bobo$6b2o7$6bo$6bobo$6b3o$8bo2$b2o$b2o6$17b2o$17b2o25$19b2o$
19bobo$21bo$17b4ob2o$17bo2bobobo$4b2o16bobo$5bo16bo2b2o$5bobo13b2o4bo$
6b2o15b5o$23bo4b2o$26b2o2bo$27bob2o$27bo$26b2o2$6bo$6bobo$6b3o$8bo2$b
2o$b2o!

Posted: **January 8th, 2016, 5:36 pm**

A fairly classic-looking stop-and-restart conduit:

Code: Select all

x = 34, y = 56, rule = LifeHistory
10.3D$11.D$9.3D16$9.2A15.D$9.2A15.D.D$26.2D$2A.A$A.2A7$5.A$4.A.A$4.2A
3$12.2D$2.2A7.D2.D$2.2A8.2D$27.2A$26.A.A$26.2A$30.2A$30.A.A$32.A$32.
2A2$23.2A.A$23.2A.3A$29.A$23.2A.3A$24.A.A$24.A.A$6.3C16.A$7.C8.2A$7.
3C6.A$17.3A$19.A!

Unfortunately, it can't connect by any of the other three ways to hit the beehive and result in an upward R-pentomino.

Posted: **January 12th, 2016, 5:24 pm**

R-to-R:

Code: Select all

x = 21, y = 18, rule = LifeHistory
19.2A$19.A$16.BA.A$2.2A7.3B2.B2A$3.A4.10B$2.A4.2A8B$2.2A3.2A8B$4.A13B
$2.3A5B2C6B$.A2.7B2C4B$.2A3.5BC4B$7.9B$8.8B$10.5B$10.4B$9.2BD2B$9.2B
2D$10.2D!

This is the same mechanism used in 47P72, but the blockers are replaced with stable objects that take longer to recover. It also has a smaller bounding box than the blocker version. Usually a p6 thumb does the trick for all bounding-box-related needs in the gun collection, but there's at least one that can be shrunk with this conduit:

Code: Select all

x = 53, y = 75, rule = LifeHistory
2.2AB6.B8.B6.B2A$.B2AB4.4B6.4B4.B2AB$.12B6.12B$2.12B.2B.4B2A6B20.A$2.
19B2ABA5B18.3A$3.7B3A7BA3BA4B18.A$2.6B2AB2A6B5A6B2.2B8.2B2.B2A$2.6B2A
8B3ABA10BAB6.8B$4.4B2A8B2A8B2.3BA13B$6.20B4.2BABA12B$4.8B2A8B2A5B.7BA
10B$2.7BAB3A8B2A8B2A2B3A9B$2.6B5A6B2AB2A7B3A4BA9B$3.4BA3BA7B3A11BAB2A
BA8B$2.5BAB2A18B.5B3A9B$2.6B2A4B.2B.11B.14B2AB$.12B6.8B3.7B2.5B2A$.B
2AB4.4B6.5B7.5B4.4B$2.2AB6.B7.4B8.3B7.3B$18.4B7.3B9.B2A$17.4B3.B2.BA
3B10.A.A.2A$16.4B3.3AB2A2B2A7.A.A.2A.A$15.A3B4.4A4B2A7.2A$14.A3B6.3B
2A2.B$13.B3A7.3B26$2.2AB6.B8.B6.B2A$.B2AB4.4B6.4B4.B2AB$.12B6.12B$2.
12B.2B.4B2A6B$2.19B2ABA5B$3.7B3A7BA3BA4B$2.6B2AB2A6B5A6B2.2B8.2B$2.6B
2A8B3ABA7B.2BAB6.4B$4.4B2A8B2A8B2.3BA12B$6.20B4.2BABA11B$4.8B2A8B2A5B
2.6BA7B$2.7BAB3A8B2A8B2A2B3A8B$2.6B5A6B2AB2A7B3A4BA9B$3.4BA3BA7B3A11B
AB2ABA8B$2.5BAB2A18B.5B3A8B$2.6B2A4B.2B.11B.14B2A$.12B6.8B3.7B2.5B2A$
.B2AB4.4B6.5B7.5B4.5B$2.2AB6.B7.4B8.3B8.3B$18.4B7.3B12.3B$17.4B3.B2.B
A3B12.3B2A2.B$16.4B3.3AB2A2B2A10.4A4B2A$15.A3B4.4A4B2A10.3AB2A2B2A$
14.A3B6.3B2A2.B12.B2.BA3B$13.B3A7.3B22.3B!

EDIT: H-to-C that probably doesn't connect to anything, but presented for completeness:

Code: Select all

x = 28, y = 21, rule = B3/S23
20bo$18b3o$17bo$2o15b2o$bo$bobo$2b2o$23b2o$24bo$24bob2o$21b2obo2bo$22b
ob2o$22bo$2bo18b2o$2bobo$2b3o$4bo11b2o$16bo$17b3o$19bo!

Posted: **March 3rd, 2016, 6:04 pm**

A HL167W that does not connect to anything known:

Code: Select all

x = 41, y = 38, rule = LifeHistory
23.B$22.3B$20.3B2C$20.3BC.CB$8.C10.4B.2C2B$8.3C8.3B.4B$11.C5.9B$10.2C
3.11B$10.4B.10B$10.17B$10.18B$9.18B$8.20B$9.18B$11.16B$4.2B3.17B4.2C$
3.24B2.B2CB$2.25B2.4B$2.2B2D23B.3B2.B$2.BD2BD30B3.B$3.DBD32B.2B$3.2D
36B$3.38B$2.4B3.31B$.4B6.28B$4B6.28B$3B8.14B3.10B$2B10.4B.11B.9B$B16.
20B$17.12B.4B$18.11B.4B$16.4B.4B3CB2.3B$16.2C4.4BC2B3.B$17.C4.2B3C2B$
14.3C6.6B$14.C8.7B$25.B.4B$28.4B!

There's almost certainly more along those lines.

Posted: **March 4th, 2016, 7:07 am**

I found manually this catalyst:

Code: Select all

x = 15, y = 7, rule = B3/S23
b3o$bo$3o$10b2ob2o$11bob2o$11bo$10b2o!

Posted: **March 5th, 2016, 6:10 pm**

A for awesome wrote:A HL167W that does not connect to anything known:
Code: Select all
RLE

I thought I already found that one.

Posted: **March 5th, 2016, 7:10 pm**

Extrementhusiast wrote:
A for awesome wrote:A HL167W that does not connect to anything known:
Code: Select all
RLE
I thought I already found that one.

Sorry. I really find it hard to keep 35 pages of posts straight in my head, but even so, I probably should have checked.

Posted: **March 13th, 2016, 12:23 pm**

I've always been subconsciously interested in this technology. Of course I'm no good at it.

Here's a small H to G which has probably already been discovered before:

Code: Select all

x = 15, y = 17, rule = LifeHistory
13.D$13.2D$12.D.D$8.C$8.3C$8.C.C$10.C2$2A$2A6$4.2A$4.2A!

and a H to random junk:

Code: Select all

x = 22, y = 14, rule = LifeHistory
20.2D$19.D.D$21.D2$14.C$14.3C$4.2D8.C.C$4.2D10.C$2A$2A6.D$7.D.D$8.2D$
13.2D$13.2D!

Finally, a pond pushing reaction (plus annoying blinker):

Code: Select all

x = 18, y = 6, rule = LifeHistory
5.C$2A3.3C$2A3.C.C4.D2.2A$7.C6.A2.A$14.A2.A$15.2A!

Posted: **March 14th, 2016, 10:19 pm**

Here's a nice little HLx86H:

Code: Select all

x = 35, y = 26, rule = LifeHistory
16.A11.B$16.3A8.3D$19.A7.BDB$18.2A6.2B3D$18.5B3.5B$6.2A12.12B$7.A11.
13B$7.A.AB8.12B$8.2AB.3B4.12B$10.22B$10.22B$11.20B$10.21B$8.23B$6.23B
.B2A$6.2BC13B2.5B.BA.A$5.3BCBC4B.7B2.2B6.A$6.2B3C4B2.3B.B4.B6.2A$5.5B
C4B4.2B2A3.2A$4.10B4.BA2.A4.A$4.3B12.3A5.A.A$2.4B22.2A$2.2A15.3A$3.A
15.A2.A$3A18.2A$A!

Posted: **March 15th, 2016, 4:26 pm**

Kazyan wrote:Here's a nice little HLx86H:

Code: Select all

x = 35, y = 26, rule = LifeHistory
16.A11.B$16.3A8.3D$19.A7.BDB$18.2A6.2B3D$18.5B3.5B$6.2A12.12B$7.A11.
13B$7.A.AB8.12B$8.2AB.3B4.12B$10.22B$10.22B$11.20B$10.21B$8.23B$6.23B
.B2A$6.2BC13B2.5B.BA.A$5.3BCBC4B.7B2.2B6.A$6.2B3C4B2.3B.B4.B6.2A$5.5B
C4B4.2B2A3.2A$4.10B4.BA2.A4.A$4.3B12.3A5.A.A$2.4B22.2A$2.2A15.3A$3.A
15.A2.A$3A18.2A$A!

Code: Select all

x = 35, y = 26, rule = LifeHistory
16.A11.B$16.3A8.3D$19.A7.BDB$18.2A6.2B3D$18.5B3.5B$6.2A12.12B$7.A11.
13B$7.A.AB8.12B$8.2AB.3B4.12B$10.22B$10.22B$11.20B$10.21B$8.23B$6.23B
.B2A$6.2BC13B2.5B.BA.A$5.3BCBC4B.7B2.2B6.A$6.2B3C4B2.3B.B4.B6.2A$5.5B
C4B4.2B2A3.2A$4.10B4.BA2.A4.A$4.3B12.3A5.A.A$2.4B22.2A$2.2A15.2A.A$3.
A15.A.2A$3A$A!

ConwayLife.com

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