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So the only little problem that I see is that the Snark construction recipe at C -- EDIT: sorry, at a' -- will have to be modified, to add a piece of junk somewhere out of the way of the construction, such that a single-channel destruction recipe can be found that produces a working elbow. An examp...

All I have now is this recipe, but it requires a glider pair as trigger, and I guess that won't work? Actually I think that's perfectly workable ... Ok, but in case it's even needed, here's one: #C /* E00->E99, -32768, gl=3, -01 */ { 0, 109, 0, 93, 1, 131, 0, 1, 157, 1, 105, 0, 102, 0, 165, 1, 0, 1...

Hey, look what 20K of pattern can do nowadays! It's amazing to see calcyman's prediction come to life! If the Snark-destroying glider returns on the Snark's output lane, and if it doesn't have to be synchronized with another glider, then the retraction recipe will work the same for either chirality...

Not quite desperate enough: Right, I was assuming too much... Here's one more version: x = 16, y = 70, rule = LifeHistory 9.A3.2A$8.A.A3.A$4.2A.A.A3.A$4.2A.A4.A$8.5A.A$3.A.3A5.2A$3.2A4.3A$6. 3A.A$3.2A.A5.A$3.A.A5.2A11$9.A3.2A$8.A.A3.A$4.2A.A.A3.A$4.2A.A4.A$8. 5A.A$3.A.3A5.A.A$3.2A4.3A2.A$6.3A.A.2A$...

There's a variant with a slightly lower population and one more half diagonal clearance to the southeast Yes, and if we're desperate for southeast clearance, we could even use this version ;) x = 64, y = 35, rule = LifeHistory 2.A41.A$A.A40.A.A$.2A24.2A15.2A2.2A$28.A19.2A$28.A.A$18.A10.2A$16.3A$ 15...

F131(98): Very nice, and attaches to syringe too, if this non-standard version is used: x = 64, y = 35, rule = LifeHistory 2.A41.A$A.A40.A.A$.2A24.2A15.2A2.2A$28.A19.2A$28.A.A$18.A10.2A$16.3A$ 15.A$15.2A$2A$.A$.A.2A$2.A2.A23.D$3.2A24.D.D$18.2A9.3D$18.2A11.D$61.D $61.D.D$50.2A9.3D$50.2A11.D$26.C3.2C...

But it looks simpler to find a recipe that also shoots a glider back on any lane which doesn't collide with the construction lane (obviously more clearance is better) and preferably does it as late as possible (best would be last glider will destroy the construction mechanism as well as shoot singl...

If you happen to get around to it, it would be nice to have a direct elbow-to-hand recipe with another 10hd or 20hd clearance or so. The hand block itself is out of reach of most elbow-move and glider output recipes, but once the hand block is turned into a honeyfarm, or a few steps farther in a lo...

I wrote:A different approach made it easier to find wide 0° recipes. Some more seaching will probably improve some of the 0° recipes posted earlier ...,

I've posted new search results for 0° gliders in the range ±25-60 lanes here

I am trying to get some stable mechanisms to produce glider pairs that can be used to turn gliders, it there such a track already made? Surprisingly this one that I posted I while ago works: x = 55, y = 47, rule = LifeHistory 45.2C$45.C$43.C.C$42.C.C$38.2C3.C$38.2C$49.2C$49.C.C$51.C$51.C.2C$48. 2C....

A different approach made it easier to find wide 0° recipes. Some more seaching will probably improve some of the 0° recipes posted earlier, but here's a 43 hd repice to start with: #C /* E00->E00, +00, gl=1, -43 */ { 0, 93, 0, 116, 1, 152, 0, 109, 0, 127, 1, 158, 0, 0, 168, 0, 114, 1, 113, 0, 92, 0...

If you only need this as a hash for "been there done that" you could easily create some hash function even of size 64 bits. You can take the bounding box divide into 64 bit streams, and then make some not trivial hash function. The byte stream is not used as a hash. GoLGrid already has a nice vecto...

I saw the current destroy.exe has limitation of 248x248 grid. Can you change/remove/make possible to adjust/make additional version where the limitation is higher or non existent? The reason for the limit is that intermediate results from one round are stored down into a byte stream, using one byte...

I was momentarily confused by the fact that a glider going the opposite direction on the single-channel lane is numbered -1 instead of zero. Is there some mathematical reason for numbering them that way? I just use the standard lane numbering convention from here ("If a canonical-phase glider is ce...

Two older posts about in-game control buttons are here and here

However -- we're also not far away from a recipe for a Snark that drops itself directly onto the construction lane, making a lossless elbow. This could be done either with freeze-dried slow salvos, or with 0-degree gliders from a single-channel elbow (with a little more searching). I ran a few days...

dvgrn wrote:(The design in the diagram is for a slow^2 elbow moved by *WSSes, but that would need at least one clean 135-degree single-channel *WSS recipe, and more recipes would be better...

I posted this some time ago. It's an extract from this result file:

I'm in need of a single-channel recipe that moves an elbow block from SPEBOE location (left, below) to 3hd to the side, just barely out of the way of the channel: ... I remember that one-off searches could find fairly impressive things, like eaters in the correct orientation for the Demonoid, sever...

Here are two clean high-clearance hand recipes: #C /* E00->E02, -18 */ { 0, 109, 0, 94, 1, 1, 97, 0, 1, 91, 0, 0, 1, 156, 1, 1, 115, 0, 91, 1, 0, 1, 96, -1}, #C /* E00->E00, -04 */ { 0, 109, 0, 95, 0, 112, 1, 146, 1, 1, 164, 0, 93, 0, 1, 169, 0, 0, 1, 0, 0, 0, 0, 158, -1}, x = 1468, y = 1472, rule =...

calcyman wrote:The spacing numbers seem to be amiss (several off-by-one errors) ...

Oh right, that's because all "0" and "1" are relative to the first glider, not to the glider just before them.

Here's a recipe for a hand with some more clearence: #C /* E00->E00, +42 */ { 0, 109, 0, 93, 0, 97, 1, 0, 111, 0, 126, 1, 117, 1, 140, 0, 0, 1, 127, -1}, x = 1044, y = 1048, rule = LifeHistory 4$1038.2A$1038.2A7$1033.2A$1032.A.A$1034.A25$1006.A$1006.2A$1005.A.A78$ 926.2A$925.A.A$927.A21$903.A$903.2A...

An unexpected result - a methuselah in a 6-by-6 bounding box lasting 27406 generations. Population count is 20: x = 6, y = 6, rule = LifeHistory A4.A$A.4A$A3.A$A.2A$.A2.2A$2A.3A! EDIT April 17, 2017: I've completed the search in a 6-by-6 bounding box for all on-bit counts, and the pattern above is t...

Have you tried looking for long-lasting 1xn or 2xn patterns? Yes, I've searched all n-by-2 patterns up to n=16 for all on-bit counts. The longest-lasting is this (23662 gens, 20 on-cells): x = 16, y = 2, rule = LifeHistory A2.3A.A.4A.2A$3A2.3A5.3A! There is also a version of Blom in a 15-by-2 box (...

I happen to think methuselahs are somewhat interesting... The lifespan of your methuselah is actually 2050 generations not 1100. A little searching found this 30 generations predecessor of your pattern, which is just 8 on-cells in a 6-by-5 bounding box: x = 6, y = 5, rule = LifeHistory A$A$A2.3A$2.A...