ConwayLife.com

Is there a replacement for the block? Huh. The right side of that bottom catalyst is pretty flexible: there's sufficient room to fit other catalysts or weld. Example of what I mean: x = 34, y = 46, rule = LifeHistory 3.A$4.A$2.3A2$22.2A$23.A$23.A.A5.2A$24.2A5.A$29.A.A$29.2A2$26.2A$25.A 2.A$25.A.A$2...

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The examples folder provides a couple of examples as to how to set up searches for ways to extend a given wire.

LLS's symmetry notation seems incomplete and/or inconsistent. The help says: "p2 RE\ x1" imposes the glide-reflect symmetry of a glider. Based on that, "p1 RO1" should mean "rotates by 90 degrees every generation." Yet that option isn't recognized, and instead triggers the assert on line 271 of lls....

I've spent some time reading the source code of silk and figuring out what's going on in advance.py and advance.hpp. I thought I'd share in case others are interested. My starting point is the following paraphrased comments by APG, from Discord: No cell in a still life can have over 6 nbrs, so we ca...

What options are there for connecting something to the input and maintaining the 120-tick repeat time? HR89H (a barrister find) works: x = 51, y = 61, rule = LifeHistory 33.A$33.3A$36.A$35.2A$23.2A2.2A$17.2A3.A.A3.A$18.A3.A2.3A$18.A.2A.A.A $9.A9.A.A.A5.2A$9.3A11.A4.A2.A$12.A10.2A3.A.A.A$11.2A14.2A....

Good eye. The formal name of the first part is HRx93E . No hits on the forum when I search that, so I think it's new. x = 30, y = 23, rule = LifeHistory 9.2B17.2A$7.4B9.2A6.A$2.B.8B7.B2A2B.BA.A$.2AB.B2A5B7.4B.B2A$.2A3B2A7B 4.7B$2.2B.11B2.8B$5.19B$6.19B$6.19B$7.19B$5.20B$5.2BC17B$4.3BCBC4B. 11B$5.2B3...

Wait, there's only finitely many ways that the exposed highway robber can be destroyed. Can we make a machine that detects the different cases, cleans up the debris in each case, then reassembles the whole chain of highway robbers from scratch? It doesn't matter how big said machine is: the idea is ...

I don't think that's possible: those catalysts are just too close. The closest thing I can do is getting 1 of the 2 fishhooks to work, at the cost of swapping out the eater 2 for a higher-clearance variant that's less versatile [sample catalysis shown]. But with the usual eater 2, I can't even get 1...

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A couple speed-tunnel based factories that I don't recognize: G to tub and G to 2 blocks. x = 66, y = 34, rule = LifeHistory $54.A$54.3A$57.A3.2A$56.2A4.A$62.A.2A$60.A.A2.A$51.2D6.A.A.2A$51.2D6. A.A$60.2A$11.2A$11.2A35.2D$48.2D$18.2A$19.A$17.A.A.2A$8.D8.2A.A2.A$7. D.D10.A.2A$8.C11.A27.C$6.C.C10.2A25...

CatForce is good for finding these sorts of converters: here's a non-engineered solution with repeat time 488. Better is probably possible--that glider is the limiting factor. x = 49, y = 110, rule = LifeHistory 32.A$30.3A7.2A$19.2A8.A5.2A2.A.A$15.2A.A.A8.2A4.A3.A4.A$14.A.A.A17.3A .5A$14.A.A.2A18.A....

I was running barrister on the galumpher-type setup, trying to find a simpler/faster way to ensure that the block was restored. Didn't find anything. But some interesting pi catalyses came out of it: they're all relatively late, between gens 30 and 55 or so, and only involve one side of the pi. x = ...

Glider reflector possibilities compilation I made a while back: x = 354, y = 502, rule = LifeHistory 344.C2.2A$128.C59.C153.C.C2.2A$129.C56.C.C123.C2.2A26.2C$127.3C57.2C 2.2A84.C32.C.C2.2A$39.C150.A2.A53.C27.C.C33.2C29.A$40.C28.C.C119.A.A 54.2C26.2C63.A.A$9.C28.3C29.2C24.C.C30.A62.A54.2C61.A30.A2.A$...

Another period-tripling speed tunnel based factory. x = 29, y = 31, rule = LifeHistory 21.A$.C19.3A$2.C21.A$3C16.5A$9.2D8.A$8.D2.D10.4A$9.2D10.A3.A$21.A.A.A .2A$17.D4.2A.A.2A$5.2D9.D.D6.A$4.D2.D8.D.D6.A.2A$5.2D3.2D5.D8.A.A$9.D 2.D$10.2D7$16.2E5.2A$15.E2.E4.A.A$11.2A3.E.E6.A$10.A.A4.E7.A.2A$10.A 9.2A...

Digging thru old forum posts, I noticed a partial HFx55B that can be cleaned up with a jujub reflector. x = 50, y = 41, rule = LifeHistory 33.BE$32.BEBE$32.BEBE$33.BE2B$31.5B$30.8B$30.13B$31.15B$30.17BD$28. 19B2D$26.22B2D$26.2BC18B2D$25.3BCBC4B.8B.3B$26.2B3C4B2.7B$25.5BC4B2. 5B$24.10B3.4B$23.4B10.2B...

RT 167 90 degree cc reflector using the pond bait, EDIT by dvgrn: overclockable at 108 through 129 ticks : x = 37, y = 49, rule = LifeHistory 20.A$20.3A$23.A$22.2A$13.2A7.4B$12.A2.A8.B2A$12.3A.A6.BA.A$15.A.B5.B 2A$B11.2A.4B3.4B$2B10.A.5B.4B$3B6.2A.A2.5BD5B$4B5.2A.2A.4BD6B$.4B9.5B 3D3B2A$2.4B8.11B2A$...

Glider to block plus inaccessible beehive. x = 49, y = 28, rule = LifeHistory 43.2A$43.A$41.A.A$41.2A2$10.2A.2A5.2E$9.A.A.A6.2E14.2E$9.A3.A22.2E4. 2A$7.2A.3A30.A$6.A.A.A9.2D21.A.A$6.A.A10.D2.D17.2A.A.3A$4.2A2.A11.2D 19.A.A4.A$3.A4.2A29.A.A.A.3A$3.5A31.2A2.A.A$.2A4.A35.2A$A2.2A$2A.A$3. A$3A$A3$14.2A$...

Here is a dirty HFx140H with an annoying Behive : With having both FNGs to work with, and the amount of (glider-to-stuff) we have, there's probably a solution. This almost works. x = 97, y = 67, rule = LifeHistory 50.2A.2A$51.A.A$46.2A.A5.A.2A$45.A.A.2A3.2A.A.A$44.A6.A.A6.A$44.7A3. 7A$76.2A$46.3A7....

I don't think this ever got cross-posted from Discord: here's a glider-powered block keeper that could be used as a memory cell. x = 52, y = 47, rule = LifeHistory 4.C$2.C.C$3.2C8$42.A$41.A.A$42.A2$40.5A$40.A4.A$43.A2.A$12.2A29.2A.A$ 13.A26.A5.A.2A$12.A26.A.A4.A.2A$12.4A23.A2.A2.2A$9.A5.A24.2A4.A$7....

I'd like to nominate the new g-to-r (and the related conduits with the same start) that I found fairly recently: x = 32, y = 33, rule = B3/S23 16b2obo$12b2obo2b2o$12bo3bo$14b2ob2obo$6b2o2b4obobob2o$6bo2bobo$7bobo$ 8bobo9b2o$9bo4b2o4bo$14b2o6bo$18b5o$18bo$21b2o$21bo$19bobo$19b2o$25bo$ 23b3o$22bo$22b2...

Conduit-based p178 oscillator that never got crossposted from discord, from back when I found that HR89H conduit: x = 60, y = 60, rule = B3/S23 43b2o2b2o$37b2o3bobo3bo$38bo3bo2b3o$38bob2obobo$29bo9bobobo5b2o$29b3o 11bo4bo2bo$32bo10b2o3bobobo$6b2o3b2o18b2o14b2obobo$5bo2bobobo34bo2b2o$ 4bob3obo37b2o$4...

I've done a couple barrister searches on it, but it doesn't seem like there's a straightforward 90 degree reflector. I did find this 180 degree reflector with CatForce, but it's large and unwieldy. x = 42, y = 61, rule = LifeHistory 16.2A.A$12.2A.A2.2A$12.A3.A$14.2A.2A.A$6.2A2.4A.A.A.2A$6.A2.A.A2.3B...

Some g-to-x stuff from running CatForce on that new boojum-based start. Complete, but of questionable connectability and usefulness (big and higher repeat time). x = 206, y = 71, rule = LifeHistory 8$179.2A.A$31.2A.A46.2A.A46.2A.A40.2A.A2.2A$27.2A.A2.2A42.2A.A2.2A42. 2A.A2.2A40.A3.A$27.A3.A45.A3.A45...

Multiple times, people have asked for a compilation of sparkers. They're scattered across a couple different places. I've collected a good portion of them for purposes of periodic CatForce searches, so I thought I'd make a stamp collection: x = 413, y = 597, rule = LifeHistory 123.2A$81.A42.A$82.2A4...