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Just wanted to mention that a new category yl72 has turned up in G1. The pattern consists of two block laying switch engines that are in sync such that the period halves from 144 to 72.

A well known c205 against the grain wick can be terminated on the right. Not really useful but sort of a first result: x = 86, y = 97, rule = B3/S23 10$40bo2b2o2b2o9bobob2o3b3o$9b31o2bo2bo2b2o2bo2b2obob2o6b2o$40b3o2b2o 2b3o3b2o3b2o4bobo$9b31o3b2o7bo4bobo4b2o$40b9o2bo11bo5b2o$9b31o11bo11b 5o3bo$40b2o...

:-/

Didn't see the forest among the trees.

Here is the 2c/5 wick featured in the arbitrary wide grey ship shown in its long form: x = 1517, y = 163, rule = B3/S23 38$41b2obo$41b5o$40bo3b2o$41b2o$41b2o12b2o$36b4o81b2o22bo22bo3bo19b2o 46b2o22bo22bo3bo19b2o46b2o22bo22bo3bo19b2o46b2o22bo22bo3bo19b2o46b2o 22bo22bo3bo19b2o46b2o22bo22bo3bo19b2o46b2...

Ther is a natural yl96 in G1:

http://catagolue.appspot.com/object/yl9 ... 5e09/b3s23

Here is an unfinished c/5 grey ship part to switch from greystretcher domain to normal c/5 grey ship components: x = 209, y = 158, rule = B3/S23 30$91b5o$94bobo$90bo6bo5b5o$90bo3bo11bobo$91b2obo7bo6bo5b5o$94bob2o4bo 3bo11bobo$92b2o9b2obo7bo6bo5b5o$93bo12bob2o4bo3bo11bobo$91b2o11b2o9b2o bo7bo6bo5b5o$...

You‘re right, pasting error... I just wanted to get that thing out quickly, as I won‘t be able to spend much time on spaceship searching for the next two weeks. Maybe you could spend some time on c/6 grey ship components? You seem to succeed where I fail. Also 2c/5 and 2c/6 against the grain are sti...

If I'd know an appropriate short wide c/6 spaceship with a domino spark, then this couls be a c/6 grey ship component: x = 184, y = 63, rule = B3/S23 6$54b2o83b2o2$38bobo11b3o12bobo11b2o40bobo11b3o12bobo$9b4o11b2o27b2o 11b2o2bo10b3o10b4o11b2o27b2o11b2o2bo$12bo9bob2obo8b3o3bo7b3ob3o7b3o12b o3b2o12bo9...

Could there be a (3,2)c/6 oblique moving bubble? Does a rectangular space clearer exist?

there is a simple solution... x = 446, y = 507, rule = B3/S23 29$30b362o2$30b362o2$30b362o2$30b362o2$30b362o2$30b362o2$30b362o2$30b 362o2$30b362o2$30b362o2$30b362o2$30b362o2$30b362o2$30b362o2$30b362o2$ 30b362o2$30b362o2$30b362o2$30b362o2$30b362o2$30b362o2$30b362o2$30b362o 2$30b362o2$30b362o2$30b362o...

We could use the p6 backwards rake to produce higher period 2c/3 bubbles?! That ant stretchers look nice! Here's some unfinished result you could maybe give a try: x = 119, y = 298, rule = B3/S23 11$44bobobobobo$44bobobobobo$45b2obob2o$45bo2bo2bo$48bo$44bobobobobo$ 44bobobobobo$45b2obob2o$45bo2bo2bo...

Thanks for your constant support and fixes of my errors! I'm a little overworked and thus spend less attention on search setup and results and make silly mistakes. Now what is missing is the other corner. Here I even lack promising partial results so far. If we find that, then I would call another m...

There mus be a completion of this 2c/5 grey ship corner: x = 106, y = 121, rule = B3/S23 10$43bobobo$20b22obobobo$41bobob2o$20b21o2bo2bo$43bo$20b22obobobobo$ 43bobobobo$20b23o2bob2o$43bobo2bo$20b23o2bo$45bobobobo$20b26obobobo$ 45bobob2o$20b25o2bo2bo$47bo$20b26obobobobo$47bobobobo$20b27o2bob2o$47b ob...

Just to clarify the notion of greyship (as mentioned in the spaceship main article): A greyship in the sense I meant it is not a single spaceship, but rather a grammar of combinable components to build arbitrarily large ships of maximum average density. It is a long outstanding conjecture that the m...

A left over 2c/5 wave from 2006 or so I thought I could complete now with increased computing power: x = 118, y = 87, rule = B3/S23 7$4bo$2b2ob2o$2b2ob2o$3bo3b3o$3b2o2bo3bo$7bo3b2o$7bo5bob2o$7bo3bobobob 2o$8bo2bobo5bobo$9b3obobo4bob2o$12b2obobo2bob2o$14bo7bob3o$15b5o5b2o$ 15bo3bo8bo$24b5o$30bo$23b7o...

As the boundary of a finite pattern can only grow quadratically, the population growth can only be quadratically at most. Otherwise, at some point in time the boundary diamond would be too crowded with live cells and we would have sudden death through over population.

Not easily fixable! A case of unclear thinking

Ooh, I see. Sorry. But the main point of the post was that the complex Puffer can be replaced by a simpler hive puffer! That is still valid. Only we need to go back to the U shape on the right. I‘ll fix this as soon as I get to it.

Thanks for notifying!

I barely dare to post this. Slightly smaller quarter grey clearer based on your blueprint and parts, but using a simple hive puffer: x = 309, y = 241, rule = B3/S23 15$15b278o2$15b278o2$15b278o2$15b278o2$15b278o2$15b278o2$15b278o2$15b 278o2$15b278o2$15b278o2$15b278o2$15b278o2$15b278o2$15b278o2$15b27...

Here's a smaller starting point if someone wants one, reducing the diameter by about a factor of four: x = 249, y = 227, rule = LifeHistory 2.A$.A.A$A.A$2A4$2.2A$.A2.A$.A2.A$2.2A4$80.A$79.A.A$80.2A29$80.2A$79. A.A4.2A55.2A$78.A.A4.A2.A54.A$79.A5.A2.A52.A.A$86.2A53.2A$109.A61.A$ 108.A.A35.A23.A.A$10...

Here is a steep descent for a 2c/5 grey ship. So far I could not combine this with the other components. x = 28, y = 53, rule = B3/S23 5$9bobobo$8obobobo$7bobob2o$7o2bo2bo$9bo$8obobobobo$9bobobobo$9o2bob2o $9bobo2bo$9o2bo$11bobobobo$12obobobo$11bobob2o$11o2bo2bo$13bo$12obobob obo$13bobobobo$13o2bob2...

Wow! A true tour de force. You seem to have separated the task in subtasks and solved every one of them separately. All these subtasks have complex solutions only and all of them in the end must be put together. Great work! Could you give building a quarter max a try? That looks to me like needing a...

I didn't see that connection! But good to see you got the spirit! Find a solution and then try to modify/simplify. I just just aimed at preparing a more trapezoidal version, or maybe a bigger grey ship that shows a few of your newly found connections. I guess you already noticed that the ones you po...

Sorry to doublepost: 2c/5 and 2c/6 against the grain is still open, as is c/6.

Wonderful! Another gap closed. This connection fits to all the standard parts we already have.

A 2c/5 grey stretcher still seems out of reach, unfortunately.