Close-passing p60 MWSS streams

[pcallahan]

It's well known (and I think due to Dean Hickerson) that p120 MWSS streams can pass close in opposite directions so that the bits can be inverted and turned back by eaters at both ends in a recirculating loop.

If you "overclock" this setup at p60, you get pairwise annihilations in addition to close passing. Has anyone (perhaps DRH) characterized what kinds of streams you can store this way?

Code: Select all

x = 253, y = 93, rule = B3/S23
43b2o$43b2o2$57b2o$57b2o6$57bo$56b3o$41b5o10b3o$40bob3obo$41bo3bo8b2o
3b2o$42b3o9b2o3b2o$43bo2$57b2o$56bobo$41bo13b2o2bo$41bo14b2o168b2o$40b
obo5bo7b2o168b2o$39b2ob2o2bobo7bo$38bo5bo2b2o$41bo14bo5bo$38b2o3b2o11b
o5bo$51b2o4bo3bo164bo$51b2o5b3o163b2ob2o2$223bo5bo2$38b2o183b2obob2o$
39bo$33b2ob3o4bo191b2o$34bobo5bo18b2o164b4o4b2o$34bo7b3o16bo164b6o6b2o
$24bo7bobo27b3o160bob2o3bo5b3o5b2o$24b4o4b2o30b3o158bo5bo6b2o6b2o$8bo
16b4o38bo157b2o8b2o$7bobo5b2o8bo2bo37b2o157bobo7b2o$5b2o3bo14b4o195b3o
$2o3b2o3bo4bobob2o3b4o77b2o58b2o28b2o25b2o2b2o$2o3b2o3bo5b2o3bo2bo79b
2ob3o54b2ob3o24b2ob3o22b2o2b2o$7bobo10bo84b5o55b5o25b5o22b2o2b2o$8bo8b
o2bo85b3o57b3o27b3o2$54b3o27b3o145bo2bo8bo$25b2o2b2o22b5o25b5o144bo10b
obo$25b2o2b2o22b3ob2o24b3ob2o139bo2bo3b2o5bo3b2o3b2o$25b2o2b2o25b2o28b
2o137b4o3b2obobo4bo3b2o3b2o$26b3o195b4o14bo3b2o$16b2o7bobo157b2o37bo2b
o8b2o5bobo$16b2o8b2o157bo38b4o16bo$5b2o6b2o6bo5bo158b3o30b2o4b4o$5b2o
5b3o5bo3b2obo160b3o27bobo7bo$13b2o6b6o164bo16b3o7bo$16b2o4b4o164b2o18b
o5bobo$16b2o191bo4b3ob2o$213bo$23b2obob2o183b2o2$23bo5bo2$24b2ob2o163b
3o5b2o$26bo164bo3bo4b2o$190bo5bo11b2o3b2o$190bo5bo14bo$204b2o2bo5bo$
196bo7bobo2b2ob2o$25b2o168b2o7bo5bobo$25b2o168b2o14bo$193bo2b2o13bo$
194bobo$194b2o2$209bo$192b2o3b2o9b3o$192b2o3b2o8bo3bo$206bob3obo$194b
3o10b5o$194b3o$195bo6$194b2o$194b2o2$208b2o$208b2o!

Here's another mode where the spaceships make it to the left side and turn at the eater.

Code: Select all

x = 253, y = 93, rule = B3/S23
43b2o$43b2o2$57b2o$57b2o5$42b3o11b3o$41bo3bo10b3o$40bo5bo8bo3bo$40b2ob
ob2o$54b2o3b2o2$43bo$42bobo$42bobo$42b2o14b3o$41bo13b2o$40b3o12b2o$39b
o3bo10b2o170b2o$38bob3obo10bobo168b2o$39b5o4bo7b2o$49b2o$48b2o176bo$
56b2o3b2o162bobo$51b2o3b2o3b2o161bo3bo$51b2o171b5o$58b3o162b2o3b2o$58b
3o163b5o$59bo165b3o$38b2o186bo$39bo$33b2ob3o198bo$34bobo24b2o174bobo$
34bo6bobo17bo178b2o$27bo4bobo6b2o19b3o160b2o13b2o4b2o$26bobo3b2o8bo21b
3o157bo2bo12b2o4b2o$9b2o14bo3b2o36bo158bo10bobo$9bobo13bo3b2o35b2o155b
ob2o10bo$4b2o4b3o12bo3b2o$4o2bo4b3o12bobo43b5o25b5o25b5o25b5o25b5o25b
4o$3ob2o4b3o7bo6bo44bo4bo24bo4bo24bo4bo24bo4bo24bo4bo23bo4bo$9bobo9b2o
49bo29bo29bo29bo29bo28bo5bo$9b2o9b2o51bo3bo25bo3bo25bo3bo25bo3bo25bo3b
o24bo$26bo30bo17bo29bo29bo29bo29bo30bo$30bo24bo3bo171b2o9b2o$25bo5bo
28bo169b2o9bobo$26bo4bo23bo4bo164bo6bo7b3o4b2ob3o$27b4o25b5o163bobo12b
3o4bo2b4o$222b2o3bo12b3o4b2o$15bo10b2obo155b2o35b2o3bo13bobo$13bobo10b
o158bo36b2o3bo14b2o$5b2o4b2o12bo2bo157b3o21bo8b2o3bobo$5b2o4b2o13b2o
160b3o19b2o6bobo4bo$11b2o178bo17bobo6bo$13bobo174b2o24bobo$15bo198b3ob
2o$213bo$26bo186b2o$25b3o165bo$24b5o163b3o$23b2o3b2o162b3o$24b5o171b2o
$24bo3bo161b2o3b2o3b2o$25bobo162b2o3b2o$26bo176b2o$202b2o$195b2o7bo4b
5o$25b2o168bobo10bob3obo$25b2o170b2o10bo3bo$196b2o12b3o$196b2o13bo$
192b3o14b2o$208bobo$208bobo$209bo2$192b2o3b2o$206b2obob2o$193bo3bo8bo
5bo$194b3o10bo3bo$194b3o11b3o5$194b2o$194b2o2$208b2o$208b2o!

[Dean Hickerson]

It's well known (and I think due to Dean Hickerson) that p120 MWSS streams can pass close in opposite directions so that the bits can be inverted and turned back by eaters at both ends in a recirculating loop.

I just noticed this post from a few weeks ago. I don't remember seeing that p120 loop before; I'm pretty sure I didn't invent it. I did use a close relative of the end reaction in the first p94 glider gun, but there the MWSSs were traveling in the same direction.