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=== 17c/45 pi heptomino crawler ===
=== 17c/45 pi heptomino crawler ===
{{EmbedViewer
|pname        = 17c45reaction
|viewerconfig = #C [[ TRACKLOOP 45 0 -17/45 GPS 22.5 ZOOM 12  Y 12 THUMBSIZE 2 AUTOSTART ]]
|position    = center
|caption      = 17c/45
|style        = width:300px;
}}
Perhaps the first and most well known climber is the infamous [[17c/45 reaction]], consisting of [[pi heptomino]] running over a [[blinker]], moving it back 6 cells and rephasing it, whilst the pi heptomino moves forward 17 cells. This takes place in 45 generations.
Perhaps the first and most well known climber is the infamous [[17c/45 reaction]], consisting of [[pi heptomino]] running over a [[blinker]], moving it back 6 cells and rephasing it, whilst the pi heptomino moves forward 17 cells. This takes place in 45 generations.


Line 12: Line 21:


=== 31c/240 Herschel crawler ===
=== 31c/240 Herschel crawler ===
{{EmbedViewer
|pname        = 31c240reaction
|viewerconfig = #C [[ AUTOSTART GPS 60 X  0 Y 40 TRACKLOOP 240 0/240 -31/240 THUMBSIZE 2 ZOOM 4 HEIGHT 480 ]]
|position    = center
|caption      = 31c/240
|style        = width:300px;
}}
Another orthogonal crawler, the [[31c/240 reaction]], consisting of a Herschel crawling though blocks.
Another orthogonal crawler, the [[31c/240 reaction]], consisting of a Herschel crawling though blocks.


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=== (23,5)c/79 Herschel climber ===
=== (23,5)c/79 Herschel climber ===
{{EmbedViewer
|pname        = 235c79climber
|viewerconfig = #C [[ AUTOSTART GPS 39.5 X -10 Y 15 TRACKLOOP 79 5/79 -23/79 THUMBSIZE 2 ZOOM 10 HEIGHT 480 ]]
|position    = center
|caption      = (23,5)c/79
|style        = width:300px;
}}
The [[(23,5)c/79 Herschel climber]] involves a [[Herschel]] reacting with a stream of gliders, emitting more gliders behind it in the same way, displacing the Herschel by 23 cells vertically and 5 horizontally in the space of 79 generations. It can also crawl on certain still lifes as well as gliders.
The [[(23,5)c/79 Herschel climber]] involves a [[Herschel]] reacting with a stream of gliders, emitting more gliders behind it in the same way, displacing the Herschel by 23 cells vertically and 5 horizontally in the space of 79 generations. It can also crawl on certain still lifes as well as gliders.


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=== (34,7)c/156 Herschel climber ===
=== (34,7)c/156 Herschel climber ===
{{EmbedViewer
|pname        = 347c156climber
|viewerconfig = #C [[ HEIGHT 600 WIDTH 600 THUMBSIZE 2 ZOOM 4 X 70 Y -40 AUTOSTART TRACKLOOP 312 -34/156 7/156 ]]
|position    = center
|caption      = (34,7)c/156
|style        = width:300px;
}}
The [[(34,7)c/156 Herschel climber]] is another notable oblique climber. An [[Unnamed (34,7)c/156 spaceship|unnamed (34,7)c/156 caterpillar]] has been built using this climber.
The [[(34,7)c/156 Herschel climber]] is another notable oblique climber. An [[Unnamed (34,7)c/156 spaceship|unnamed (34,7)c/156 caterpillar]] has been built using this climber.


=== (13,1)c/31 Pseudo-B climber ===
=== (13,1)c/31 Pseudo-B climber ===
{{EmbedViewer
|pname        = 131c31climber
|viewerconfig = #C [[ HEIGHT 640 THUMBSIZE 2 GPS 15.5 X 5 Y 10 ZOOM 12 AUTOSTART TRACKLOOP 31 1/31 -13/31 ]]
|position    = center
|caption      = (13,1)c/31
|style        = width:300px;
}}
An interesting climber, the [[(13,1)c/31 Pseudo-B climber]] involves a climbing reaction that never isolates itself into a [[Herschel]] or [[B-heptomino]]. A spaceship based on it was first mentioned by Gabriel Nivasch as an afterthought on his caterpillar article.
An interesting climber, the [[(13,1)c/31 Pseudo-B climber]] involves a climbing reaction that never isolates itself into a [[Herschel]] or [[B-heptomino]]. A spaceship based on it was first mentioned by Gabriel Nivasch as an afterthought on his caterpillar article.


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=== (27,1)c/72 Herschel climber ===
=== (27,1)c/72 Herschel climber ===
{{EmbedViewer
|pname        = 271c72climber
|viewerconfig = #C [[ AUTOSTART GPS 36 X -10 Y 1 TRACKLOOP 72 1/72 -27/72 THUMBSIZE 2 ZOOM 4 HEIGHT 480 ]]
|position    = center
|caption      = (27,1)c/72
|style        = width:300px;
}}
Much research has been conducted into a spaceship based on the [[(27,1)c/72 Herschel climber]].
Much research has been conducted into a spaceship based on the [[(27,1)c/72 Herschel climber]].


=== (13,4)c/41 climber ===
=== (13,4)c/41 B-heptomino climber ===
Consists of a [[B-heptomino]] climbing on gliders. Was initially proposed in 2014,<ref name="post15241" /> but no development started until 2021.<ref name="post123822" />
{{EmbedViewer
|pname        = 134c41climber
|viewerconfig = #C [[ AUTOSTART GPS 34 X -17 Y 16 TRACKLOOP 41 4/41 -13/41 THUMBSIZE 2 ZOOM 13 HEIGHT 480 ]]
|position    = center
|caption      = (13,4)c/41
|style        = width:300px;
}}
 
 
Consists of a B-heptomino climbing on gliders. Was initially proposed in 2014,<ref name="post15241" /> but no development started until 2021.<ref name="post123822" />


=== (31,5)c/137 climber ===
=== (31,5)c/137 climber ===
{{EmbedViewer
|rle          = 286bo$286bo$286bo2$288b3o2$254b3o29bo$286bo$258bo27bo$258bo$224bo33bo
$224bo$224bo29b3o2$226b3o2$192b3o29bo$224bo$196bo27bo$196bo$162bo33bo
$162bo$162bo29b3o2$164b3o2$130b3o29bo$162bo$134bo27bo$134bo134bo$134b
o7b2o125bo$88bobo51b2o125bo$83b3o7b2o5bo29b3o$83bo2b2o4bobo4b3o169b3o
$83b2ob4o8b2ob2o$85b3o11b3o9b2o124b3o29bo$100bo10b2o156bo$241bo27bo$67b
o173bo$67bo139bo33bo7b2o$67bo139bo41b2o$207bo29b3o$69b3o$209b3o$35b3o
29bo150b2o$67bo107b3o14bo14bo10b2o$39bo27bo78bobo44b2o12bo$39bo109bo29b
o12b2o13bo$5bo33bo103b3ob2o30bo$5bo142bobo28bo7b2o$5bo29b3o111bo37b2o
$143b3o3bo25b3o$7b3o2$5bo150b2o$5bo139b2o9b2o$5bo140bo$112bo31b3o$112b
o30bobo$112bo30b2o$143b2o$114b3o2$80b3o29bo$112bo$84bo27bo$84bo$50bo33b
o$50bo$50bo29b3o$137b3o$52b3o84bo141b3o$138bo$18b3o29bo165bo68bo$50bo
165b2o40bo26bo$22bo27bo164bobo33bo7bo25bo$22bo228bo5b3o$22bo228bo29b3o
2$18b3o232b3o2$219b3o29bo$251bo$223bo27bo$160b2o61bo$159b2o28bo33bo$161b
o27bo$189bo29b3o2$191b3o2$157b3o29bo$189bo74b3o$161bo27bo$161bo106bo$
127bo33bo106bo$127bo106bo33bo7b2o$127bo29b3o74bo41b2o$234bo29b3o$129b
3o$138b2o96b3o$95b3o29bo10b2o105b2o$77bo13b2o34bo74b3o29bo10b2o$77b3o
9bob3o5bo27bo106bo$77bobo10b4o5bo106bo27bo$79bo19bo7b2o97bo$107b2o63b
o33bo7b2o$95b3o56bo17bo41b2o$150b6o16bo29b3o$62b3o84b2ob2o2bo$149b2o3b
ob2o16b3o$66bo84b4obo26b2o$66bo85b2o18bo10b2o$32bo33bo105bo$32bo106bo
32bo$32bo29b3o74bo$139bo$34b3o$141b3o$3o29bo$32bo74b3o29bo$4bo27bo106b
o$4bo106bo27bo$4bo106bo$77bo33bo$3o74bo$77bo29b3o2$79b3o2$45b3o29bo$77b
o$49bo27bo$49bo$15bo33bo$15bo$15bo29b3o2$17b3o2$15bo$15bo$15bo!
|viewerconfig = #C [[ THUMBSIZE 2 ZOOM 2.2 X -5 Y 5 ]]
|position    = center
|caption      =
|style        = width:300px;
}}
This has been discussed somewhat as of late 2022.<ref name="thread5867"/>
This has been discussed somewhat as of late 2022.<ref name="thread5867"/>


=== (10,7)c/75 climber ===
=== (10,7)c/75 climber ===
A spaceship based on this fuse has also been discussed, however its potential is doubtful.<ref name="thread6025" />
A spaceship based on this fuse has also been discussed, however its potential is doubtful.<ref name="thread6025" />


=== Half-bakery reaction ===
=== Half-bakery reaction ===
{{EmbedViewer
|pname        = hbkreaction
|viewerconfig = #C [[ AUTOSTART GPS 45 X -15 Y 15 TRACKLOOP 290 -3/290 -6/290 THUMBSIZE 2 ZOOM 10 HEIGHT 480 ]]
|position    = center
|caption      = half-bakery reaction
|style        = width:300px;
}}
There is a well-known reaction in which a glider crashes into the side of a [[half-bakery]], shifting the loaves and releasing a glider. This reaction has been used to create [[Half-baked knightship]] and [[parallel HBK]], and research has been conducted into a potential caterpillar-like knightship using the reaction.<ref name="post15549" />
There is a well-known reaction in which a glider crashes into the side of a [[half-bakery]], shifting the loaves and releasing a glider. This reaction has been used to create [[Half-baked knightship]] and [[parallel HBK]], and research has been conducted into a potential caterpillar-like knightship using the reaction.<ref name="post15549" />


Revision as of 12:52, 12 June 2023

A crawler or climber is a reaction in which two objects (or groups of objects) collide, leaving one of the objects moved backwards or forwards to a degree, and the other forward. Crawler reactions are commonly used to create engineered spaceships, also known as caterpillars.

List of crawlers

17c/45 pi heptomino crawler

x = 29, y = 55, rule = B3/S23 14bo$14bo$14bo16$13b3o13$14bo$13b3o$12b2ob2o4$14bo$12bo3bo$10bo7bo$10b o7bo$10b2ob3ob2o4$3b2o4b2o7b2o4b2o$3bobob2o11b2obobo$6b2o5bobo5b2o$8b 2o3bobo3b2o$bo7b2o7b2o7bo$2o6bo4bobo4bo6b2o$o7b2o3bobo3b2o7bo$bobo8bo 3bo8bobo$bo2bo19bo2bo$2b2o21b2o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ TRACKLOOP 45 0 -17/45 GPS 22.5 ZOOM 12 Y 12 THUMBSIZE 2 AUTOSTART ]]
17c/45
(click above to open LifeViewer)
RLE: here Plaintext: here


Perhaps the first and most well known climber is the infamous 17c/45 reaction, consisting of pi heptomino running over a blinker, moving it back 6 cells and rephasing it, whilst the pi heptomino moves forward 17 cells. This takes place in 45 generations.

The reaction was known for a long time, however the idea of a spaceship powered by this reaction was mentioned much later in 2002 by David Bell who had discovered reactions between multiple pies, which emitted gliders. After much work, Gabriel Nivasch finished construction of caterpillar, the first 17c/45 orthogonal spaceship, on 31 December 2004.

Research has been conducted into building much smaller 17c/45 spaceships with pi crawlers, analogously to the silverfish. Discussion has been ongoing since as early as 2013.[1]

31c/240 Herschel crawler

x = 66, y = 148, rule = B3/S23 5b2o57b2o$5b2o57b2o30$5b2o57b2o$5b2o57b2o30$5b2o57b2o$5b2o57b2o18$60b 3o$60bo2bo$60bo2bo$59b4o$12b3o44b2o$13bo44bo$11b3o45bo$59bo8$3b2o$3b2o 8b2o41b2o$13b2o41b2o5$2bo$bobo$o3bo$o3bo$4bo$b3o7$5b2o57b2o$5b2o57b2o 12$13b2o41b2o$13b2o41b2o17$5b2o57b2o$5b2o57b2o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ AUTOSTART GPS 60 X 0 Y 40 TRACKLOOP 240 0/240 -31/240 THUMBSIZE 2 ZOOM 4 HEIGHT 480 ]]
31c/240
(click above to open LifeViewer)
RLE: here Plaintext: here


Another orthogonal crawler, the 31c/240 reaction, consisting of a Herschel crawling though blocks.

Four 31c/240 spaceships are known, three of which use the crawler; shield bug, centipede, and silverfish. The fourth, centipede caterloopillar, relies on universal constructor technology instead of conventional crawlers.

(23,5)c/79 Herschel climber

58bo$56boo$57boo41$32bo$32bobo$32boo15$18bo$16booboo$16booboo$17bob3o$ 16b3o4$17boo$17boo$$16bo$15bobooboo$14boo4boo$14booboo$16bo8$23bo$24bo $22b3o10$bbo$oo$boo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ AUTOSTART GPS 39.5 X -10 Y 15 TRACKLOOP 79 5/79 -23/79 THUMBSIZE 2 ZOOM 10 HEIGHT 480 ]]
(23,5)c/79
(click above to open LifeViewer)
RLE: here Plaintext: here


The (23,5)c/79 Herschel climber involves a Herschel reacting with a stream of gliders, emitting more gliders behind it in the same way, displacing the Herschel by 23 cells vertically and 5 horizontally in the space of 79 generations. It can also crawl on certain still lifes as well as gliders.

This climber has been engineered and other components assembled by hand to create waterbear, which was the fastest known oblique spaceship until the discovery of Sir Robin in 2018.

(34,7)c/156 Herschel climber

x = 297, y = 199, rule = B3/S23 262b2o$263b2o$262bo23$274b2o$274b2o19b2o$283b2o10b2o$282bo2bo$283b2o3$ 240b2o$240b2o19b2o$249b2o10b2o$248bo2bo$249b2o3$194bo11b2o$194b3o9b2o 19b2o31b2o$194bobo18b2o10b2o32b2o$196bo17bo2bo42bo$215b2o4$140b2o$140b 2o16$149b2o$148bobo$150bo142b2o$281b2o10b2o$280bo2bo$281b2o4$259b2o$ 247b2o10b2o$246bo2bo$247b2o3$192bo11b2o$192b3o9b2o19b2o$192bobo18b2o 10b2o$194bo17bo2bo$213b2o4$138b2o$138b2o16$147b2o$146bobo$148bo50$3b2o $2bobo$4bo38$b2o$obo$2bo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ HEIGHT 600 WIDTH 600 THUMBSIZE 2 ZOOM 4 X 70 Y -40 AUTOSTART TRACKLOOP 312 -34/156 7/156 ]]
(34,7)c/156
(click above to open LifeViewer)
RLE: here Plaintext: here


The (34,7)c/156 Herschel climber is another notable oblique climber. An unnamed (34,7)c/156 caterpillar has been built using this climber.

(13,1)c/31 Pseudo-B climber

x = 37, y = 108, rule = B3/S23 o$b2o$2o19$8bo$6bobo$7b2o19$13bobo$14b2o$14bo17$24bo$23b3o$23bob2o$24b o2bo$25b2o$25bo2$22b2o$21bo2$20bobo2bo$20bob3obo$19b3ob2obo$20bobo$20b 3o$21bo8$29bo$27bobo$28b2o19$34bobo$35b2o$35bo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ HEIGHT 640 THUMBSIZE 2 GPS 15.5 X 5 Y 10 ZOOM 12 AUTOSTART TRACKLOOP 31 1/31 -13/31 ]]
(13,1)c/31
(click above to open LifeViewer)
RLE: here Plaintext: here


An interesting climber, the (13,1)c/31 Pseudo-B climber involves a climbing reaction that never isolates itself into a Herschel or B-heptomino. A spaceship based on it was first mentioned by Gabriel Nivasch as an afterthought on his caterpillar article.

No spaceships have been built with this reaction as of yet.

(27,1)c/72 Herschel climber

x = 127, y = 164, rule = B3/S23 74bobo$74b2o$61bobo11bo35bobo$61b2o48b2o$62bo49bo2$125bo$124bo$124b3o 37$55bobo$55b2o$42bobo11bo35bobo$42b2o48b2o$43bo49bo2$106bo$105bo$105b 3o37$36bobo$36b2o$23bobo11bo35bobo$23b2o48b2o$24bo49bo2$87bo$86bo$86b 3o14$27bo$26b3o$25b5o$25b2ob3o$26b2ob2o$12b3o13bo33b3o12b3o$13bo49bo 16bo$13b3o47b3o11bo2bo$78b2o$78b2o$77bo2bo$77bo$79b2o2$26b2o$26b2o$33b 2o$12b2o16b5o27b2o$12b2o14bo4bo28b2o$19bo8bo3b3o34bo$18bobo6bo4b4o2bo 29bobo6b2o$17b2obo6bobo2bo2b3obo27b2obo6b2o$15b2o2bo8bo3b3o2bobo25b2o 2bo$15b5o4bo8bo4bo26b5o4bo$14bo4bo3bobo4bobo31bo4bo3bobo2b3o$14bob3o4b obo4bobo31bob3o4bob3obo8bo$15b3o2bo3bo40b3o2bo3bo2bo9b3o$16bo49bo10b3o 2bo2bo4bo$17bo4bo44bo4bo8bo6bobo$17bo4bo44bo4bo9bo5b2o$21bo49bo11b3o 13$13bobo$13b2o$obo11bo35bobo$2o48b2o$bo49bo2$64bo$63bo$63b3o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ AUTOSTART GPS 36 X -10 Y 1 TRACKLOOP 72 1/72 -27/72 THUMBSIZE 2 ZOOM 4 HEIGHT 480 ]]
(27,1)c/72
(click above to open LifeViewer)
RLE: here Plaintext: here


Much research has been conducted into a spaceship based on the (27,1)c/72 Herschel climber.

(13,4)c/41 B-heptomino climber

x = 40, y = 65, rule = B3/S23 37bo$37bobo$37b2o21$24bo$22b2o$23b2o20$9bo$4b3o2bo$3bo2bo3bo$3b2obo3$ 3bo$b2o$2b2o10$2o$2o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ AUTOSTART GPS 34 X -17 Y 16 TRACKLOOP 41 4/41 -13/41 THUMBSIZE 2 ZOOM 13 HEIGHT 480 ]]
(13,4)c/41
(click above to open LifeViewer)
RLE: here Plaintext: here


Consists of a B-heptomino climbing on gliders. Was initially proposed in 2014,[2] but no development started until 2021.[3]

(31,5)c/137 climber

286bo$286bo$286bo2$288b3o2$254b3o29bo$286bo$258bo27bo$258bo$224bo33bo $224bo$224bo29b3o2$226b3o2$192b3o29bo$224bo$196bo27bo$196bo$162bo33bo $162bo$162bo29b3o2$164b3o2$130b3o29bo$162bo$134bo27bo$134bo134bo$134b o7b2o125bo$88bobo51b2o125bo$83b3o7b2o5bo29b3o$83bo2b2o4bobo4b3o169b3o $83b2ob4o8b2ob2o$85b3o11b3o9b2o124b3o29bo$100bo10b2o156bo$241bo27bo$67b o173bo$67bo139bo33bo7b2o$67bo139bo41b2o$207bo29b3o$69b3o$209b3o$35b3o 29bo150b2o$67bo107b3o14bo14bo10b2o$39bo27bo78bobo44b2o12bo$39bo109bo29b o12b2o13bo$5bo33bo103b3ob2o30bo$5bo142bobo28bo7b2o$5bo29b3o111bo37b2o $143b3o3bo25b3o$7b3o2$5bo150b2o$5bo139b2o9b2o$5bo140bo$112bo31b3o$112b o30bobo$112bo30b2o$143b2o$114b3o2$80b3o29bo$112bo$84bo27bo$84bo$50bo33b o$50bo$50bo29b3o$137b3o$52b3o84bo141b3o$138bo$18b3o29bo165bo68bo$50bo 165b2o40bo26bo$22bo27bo164bobo33bo7bo25bo$22bo228bo5b3o$22bo228bo29b3o 2$18b3o232b3o2$219b3o29bo$251bo$223bo27bo$160b2o61bo$159b2o28bo33bo$161b o27bo$189bo29b3o2$191b3o2$157b3o29bo$189bo74b3o$161bo27bo$161bo106bo$ 127bo33bo106bo$127bo106bo33bo7b2o$127bo29b3o74bo41b2o$234bo29b3o$129b 3o$138b2o96b3o$95b3o29bo10b2o105b2o$77bo13b2o34bo74b3o29bo10b2o$77b3o 9bob3o5bo27bo106bo$77bobo10b4o5bo106bo27bo$79bo19bo7b2o97bo$107b2o63b o33bo7b2o$95b3o56bo17bo41b2o$150b6o16bo29b3o$62b3o84b2ob2o2bo$149b2o3b ob2o16b3o$66bo84b4obo26b2o$66bo85b2o18bo10b2o$32bo33bo105bo$32bo106bo 32bo$32bo29b3o74bo$139bo$34b3o$141b3o$3o29bo$32bo74b3o29bo$4bo27bo106b o$4bo106bo27bo$4bo106bo$77bo33bo$3o74bo$77bo29b3o2$79b3o2$45b3o29bo$77b o$49bo27bo$49bo$15bo33bo$15bo$15bo29b3o2$17b3o2$15bo$15bo$15bo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ THUMBSIZE 2 ZOOM 2.2 X -5 Y 5 ]]
(click above to open LifeViewer)


This has been discussed somewhat as of late 2022.[4]

(10,7)c/75 climber

A spaceship based on this fuse has also been discussed, however its potential is doubtful.[5]

Half-bakery reaction

x = 59, y = 53, rule = B3/S23 57bo$56bo$56b3o12$36bo$34b2o$35b2o22$20b2o$19bo2bo$19bobo$17b2obo$16bo 2bo$16bobo$17bo2$4b2o$3bo2bo$3bobo$b2obo$o2bo$obo$bo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ AUTOSTART GPS 45 X -15 Y 15 TRACKLOOP 290 -3/290 -6/290 THUMBSIZE 2 ZOOM 10 HEIGHT 480 ]]
half-bakery reaction
(click above to open LifeViewer)
RLE: here Plaintext: here


There is a well-known reaction in which a glider crashes into the side of a half-bakery, shifting the loaves and releasing a glider. This reaction has been used to create Half-baked knightship and parallel HBK, and research has been conducted into a potential caterpillar-like knightship using the reaction.[6]

Fuses which could be made into climbers

The following lists fuses which show potential for being made into workable climbers, but progress is yet to be made.

(8,1)c/32 p128 Herschel fuse

This fuse eats gliders, spitting out double the amount of gliders, but leaving blocks behind in the process.[7]

(40,7)c/244 Herschel fuse

Consuming blinkers, a new blinker is produced by a significant shift. However, a large cluster of debris is left in the other direction, making stabilisation appear challenging.[8]

References

  1. ↑ Ivan Fomichev (December 8, 2013). Caterpillar's little brother research (discussion thread) at the ConwayLife.com forums
  2. ↑ Ivan Fomichev (December 26, 2014). (13,4)c/41 crawlers (discussion thread) at the ConwayLife.com forums
  3. ↑ C28 (February 26, 2021). Re: (13,4)c/41 crawlers (discussion thread) at the ConwayLife.com forums
  4. ↑ (31,5)c/137 Caterpillar (discussion thread) at the ConwayLife.com forums
  5. ↑ Can we make a (10,7)c/75 spaceship? (discussion thread) at the ConwayLife.com forums
  6. ↑ Brett Berger (January 2, 2015). HBK as Caterpillar (discussion thread) at the ConwayLife.com forums
  7. ↑ Sphenocorona (September 6, 2014). Re: Interesting simple fuses (discussion thread) at the ConwayLife.com forums
  8. ↑ Sphenocorona (February 9, 2014). Interesting simple fuses (discussion thread) at the ConwayLife.com forums
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