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{{Fuse|p=18|name=Blinker fuse|pname=blinkerfuse|s=2c/3|life105=true|life106=true|plaintext=true|rle=true|animated=true|synthesisRLE=true}}'''Blinker fuse''' is a 2c/3 period 18 [[fuse]] that burns [[clean]]ly through [[blinker]]s. It can be combined with [[blinker puffer 1]] to create various interesting patterns, such as [[moving sawtooth]], [[sawtooth 1163]], and [[slow puffer 2]].
{{Fuse
|name         = Blinker fuse
|pname       = blinkerfuse
|p            = 18
|s           = 2c/3
|rulemin      = B3/S23
|rulemax      = B38/S2378
|isorulemin  = B3-ky/S2-n3-c
|isorulemax  = B2n34eknqwz5-eiqy6-i7c8/S234-ainqr5-ai6-n78
|synthesisRLE = true
|plaintext   = true
|rle         = true
|animated     = true
|viewerconfig = #C [[ THUMBSIZE 2 ZOOM 10 ]]
}}{{ambox|text=Discussion thread about collections of fuses on LifeWiki:{{br}}https://conwaylife.com/forums/viewtopic.php?f=16&t=6262}}
A '''blinker fuse''' is any [[fuse]] that burns through a line of [[blinker]]s. Alternatively, it may refer to the [[2c/3]] period 18 fuse that burns [[clean]]ly through [[blinker]]s that are spaced four [[cell]]s apart, shown to the right. This particular fuse can be combined with [[blinker puffer 1]] to create various interesting patterns, such as [[moving sawtooth]], [[slow puffer 1]], and [[slow puffer 2]].


==External links==
[[House]] alone, attached to a blinker wick with spacing 4, is a predecessor to the fuse shown in the infobox (also known as a "house fuse").
*[http://echochamber.me/viewtopic.php?f=17&t=39017 A pattern in the Game of Life] - Forum thread at xkcd.com
 
== Other blinker fuses ==
 
This list does not include trivial fuses where a spaceship [[Fly-by deletion|deletes]] or modifies stationary objects, or engineered fuses consisting of parts that can be trivially rearranged to get different speeds. Fuses where a spaceship deletes objects are known for [[c/6 orthogonal]], [[c/4 diagonal]] and [[c/10 orthogonal]].
 
=== Orthogonal ===
 
==== 4c/5 orthogonal ====
The 4c/5 fuse burns through alternating blinkers with the same spacing as the 2c/3 fuses. It was reported by [[Hugh Thompson]] in {{year|1971}}.<ref>{{CiteLifeline|vol=4|pages=page 7}}</ref>
 
{{EmbedViewer
|pname        = blinkerfuse4c5
|viewerconfig = #C [[ THUMBSIZE 2 ZOOM 10 ]]
|position    = center
|caption      = The 4c/5 blinker fuse
|style        = width:300px;
}}
 
==== 2c/3 orthogonal ====
There are two other well-known 2c/3 blinker fuses that act on blinkers that are orthogonally offset by four cells, both of which are shown below. They both burn cleanly and have period 6.<ref>{{CiteSummersPattern|name=jslife|accessdate=May 27, 2009}}</ref>
{{gallery top}}
{{gallery item|{{EmbedViewer
|pname        = blinkerfuse2
|viewerconfig = #C [[ THUMBSIZE 2 ZOOM 8 ]]
|position    = center
|caption      = A longer house fuse with a shorter period of 6
|style        = width:300px;
}}}}
{{gallery item|{{EmbedViewer
|pname        = blinkerfuse3
|viewerconfig = #C [[ THUMBSIZE 2 ZOOM 8 ]]
|position    = center
|caption      = A blinker fuse known as a "bomb fuse" for its shape
|style        = width:300px;
}}}}
{{gallery bottom}}
 
==== 6c/13 orthogonal ====
The 6c/13 blinker fuse burns cleanly through blinkers that are orthogonally offset by six cells and has period 26.<ref name="hensel" /> It is most well-known for the role that it plays in [[blinker ship 1]], where the fact that it burns at a rate slower than c/2 is taken advantage of to create a [[growing spaceship]].
 
In January {{year|2021}}, [[INoMed]] constructed an adjustable high-period [[3c/7 orthogonal]] [[puffer]] that repeatedly ignites this fuse.<ref name="post119547" />
 
{{EmbedViewer
|pname        = blinkerfuse6c13
|viewerconfig = #C [[ THUMBSIZE 2 ZOOM 8 ]]
|position    = center
|caption      = The 6c/13 blinker fuse
|style        = width:300px;
}}
 
==== 8c/15 orthogonal ====
An 8c/15 orthogonal blinker fuse exists which burns through a row of alternating blinkers as follows:
 
{{EmbedViewer
|pname        = blinkerfuse8c15
|viewerconfig = #C [[ THUMBSIZE 2 ZOOM 4 ]]
|position    = center
|caption      = The 8c/15 blinker fuse
|style        = width:300px;
}}
 
==== 8c/21 orthogonal ====
Another blinker fuse which runs on the traffic light, similarly to the 6c/13 fuse.
 
{{EmbedViewer
|pname        = blinkerfuse8c21
|viewerconfig = #C [[ THUMBSIZE 2 ZOOM 10 ]]
|position    = center
|caption      = The 8c/21 blinker fuse
|style        = width:300px;
}}
 
=== Diagonal ===
There is a diagonal blinker fuse involving a [[B-heptomino]] reacting with a line of blinkers.<ref name="post33247"/>
 
{{EmbedViewer
|pname        = blinkerfusediagonal1
|viewerconfig = #C [[ THUMBSIZE 2 ZOOM 4 ]]
|position    = center
|caption      = The diagonal blinker fuse
|style        = width:300px;
}}
 
A [[wing]] can engage in a similar reaction, forming a glide-reflective 2c/44 diagonal blinker fuse.<ref>{{LinkForumThread | format = ref | title = Re: Thread for your unsure discoveries | p = 128649 | author = Lucy D'Agostino | date = April 21, 2021 }}</ref>
 
{{EmbedViewer
|pname        = blinkerfusediagonal2
|viewerconfig = #C [[ THUMBSIZE 2 ZOOM 8 ]]
|position    = center
|caption      = The diagonal 2c/44 blinker fuse
|style        = width:300px;
}}
 
== See also ==
* [[Hacksaw]]
* [[Sawtooth 1163]]
* [[Block fuse]]
 
== References ==
<references>
<ref name="hensel">[[Alan Hensel]]'s [http://www.ibiblio.org/lifepatterns/ lifep.zip pattern collection].</ref>
<ref name="post33247">{{LinkForumThread
|format    = ref
|p          = 33247
|title      = Re: Thread for your unsure discoveries
|author    = Connor Steppie
|date      = July 15, 2016
}}</ref>
<ref name="post119547">{{LinkForumThread
|format    = ref
|p          = 119547
|title      = Re: Spaceship Discussion Thread
|author    = iNoMed
|date      = January 19, 2021
}}</ref>
</references>
 
== External links ==
* {{LinkLexicon|lex_b.htm#blinkerfuse}}
* [http://echochamber.me/viewtopic.php?f=17&t=39017 A pattern in the Game of Life] - Forum thread at xkcd.com
 
{{Symmetry|orthogonal2}}

Latest revision as of 13:32, 22 September 2025

Blinker fuse
#C A period 18 blinker fuse which travels at 2c/3. x = 45, y = 5, rule = B3/S23 2o2bob2o$5obobo$8bob3ob3ob3ob3ob3ob3ob3ob3ob3o$5obobo$2o2bob2o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ THUMBSIZE 2 ZOOM 10 ]]
View animated image
View static image
Pattern type Fuse
Period 18
Speed 2c/3
Discovered by Unknown
Year of discovery Unknown
Discussion thread about collections of fuses on LifeWiki:
https://conwaylife.com/forums/viewtopic.php?f=16&t=6262

A blinker fuse is any fuse that burns through a line of blinkers. Alternatively, it may refer to the 2c/3 period 18 fuse that burns cleanly through blinkers that are spaced four cells apart, shown to the right. This particular fuse can be combined with blinker puffer 1 to create various interesting patterns, such as moving sawtooth, slow puffer 1, and slow puffer 2.

House alone, attached to a blinker wick with spacing 4, is a predecessor to the fuse shown in the infobox (also known as a "house fuse").

Other blinker fuses

This list does not include trivial fuses where a spaceship deletes or modifies stationary objects, or engineered fuses consisting of parts that can be trivially rearranged to get different speeds. Fuses where a spaceship deletes objects are known for c/6 orthogonal, c/4 diagonal and c/10 orthogonal.

Orthogonal

4c/5 orthogonal

The 4c/5 fuse burns through alternating blinkers with the same spacing as the 2c/3 fuses. It was reported by Hugh Thompson in 1971.[1]

x = 34, y = 5, rule = B3/S23 29bo$o7bo7bo7bo3bo3b2o$o2b3o2bo2b3o2bo2b3o2bo2bo5bo$o7bo7bo7bo3bo3b2o$ 29bo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ THUMBSIZE 2 ZOOM 10 ]]
The 4c/5 blinker fuse
(click above to open LifeViewer)
RLE: here Plaintext: here

2c/3 orthogonal

There are two other well-known 2c/3 blinker fuses that act on blinkers that are orthogonally offset by four cells, both of which are shown below. They both burn cleanly and have period 6.[2]

#C A period 6 blinker fuse which travels at 2c/3. x = 62, y = 5, rule = B3/S23 ob3obo2bob2o49b$ob3ob4obobo48b$13bob3ob3ob3ob3ob3ob3ob3ob3ob3ob3ob3ob 3o$ob3ob4obobo48b$ob3obo2bob2o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ THUMBSIZE 2 ZOOM 8 ]]
A longer house fuse with a shorter period of 6
(click above to open LifeViewer)
RLE: here Plaintext: here
#C An asymmetric period 6 blinker fuse which travels at 2c/3. x = 48, y = 7, rule = B3/S23 2b3o43b$bob3o42b$2o2b3o41b$b2o4bob3ob3ob3ob3ob3ob3ob3ob3ob3ob3o$b2ob3o 41b$2b4o42b$3bo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ THUMBSIZE 2 ZOOM 8 ]]
A blinker fuse known as a "bomb fuse" for its shape
(click above to open LifeViewer)
RLE: here Plaintext: here


6c/13 orthogonal

The 6c/13 blinker fuse burns cleanly through blinkers that are orthogonally offset by six cells and has period 26.[3] It is most well-known for the role that it plays in blinker ship 1, where the fact that it burns at a rate slower than c/2 is taken advantage of to create a growing spaceship.

In January 2021, INoMed constructed an adjustable high-period 3c/7 orthogonal puffer that repeatedly ignites this fuse.[4]

x = 62, y = 3, rule = b3/s23 3o4bo5bo5bo5bo5bo5bo5bo5bo5bo5bo$obo4bo5bo5bo5bo5bo5bo5bo5bo5bo5bo$3o 4bo5bo5bo5bo5bo5bo5bo5bo5bo5bo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ THUMBSIZE 2 ZOOM 8 ]]
The 6c/13 blinker fuse
(click above to open LifeViewer)
RLE: here Plaintext: here

8c/15 orthogonal

An 8c/15 orthogonal blinker fuse exists which burns through a row of alternating blinkers as follows:

x = 123, y = 9, rule = B3/S23 5bo$4bobo$3bobo7bo5b2o$3obo8bo5bobo11bo15bo15bo15bo15bo15bo$3o4b3o4b2o 5bo2b3o6bo6b3o6bo6b3o6bo6b3o6bo6b3o6bo6b3o6bo6b3o$3obo8bo5bobo11bo15bo 15bo15bo15bo15bo$3bobo7bo5b2o$4bobo$5bo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ THUMBSIZE 2 ZOOM 4 ]]
The 8c/15 blinker fuse
(click above to open LifeViewer)
RLE: here Plaintext: here

8c/21 orthogonal

Another blinker fuse which runs on the traffic light, similarly to the 6c/13 fuse.

x = 40, y = 3, rule = B3/S23 3o4bo15bo15bo$obo4bo6b3o6bo6b3o6bo$3o4bo15bo15bo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ THUMBSIZE 2 ZOOM 10 ]]
The 8c/21 blinker fuse
(click above to open LifeViewer)
RLE: here Plaintext: here

Diagonal

There is a diagonal blinker fuse involving a B-heptomino reacting with a line of blinkers.[5]

x = 53, y = 48, rule = B3/S23 ob2o$3o$bo6$14b3o$bo$bo$bo9$26b3o$13bo$13bo$13bo9$38b3o$25bo$25bo$25bo 9$50b3o$37bo$37bo$37bo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ THUMBSIZE 2 ZOOM 4 ]]
The diagonal blinker fuse
(click above to open LifeViewer)
RLE: here Plaintext: here

A wing can engage in a similar reaction, forming a glide-reflective 2c/44 diagonal blinker fuse.[6]

x = 29, y = 26, rule = B3/S23 20b3o3$17b3o8bo$28bo$28bo$14b3o8bo$25bo$25bo$11b3o8bo$22bo$22bo$8b3o8b o$19bo$19bo$5b3o8bo$16bo$16bo$2b3o8bo$13bo$13bo$10bo$10bo$2o8bo$obo$2b 2o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ THUMBSIZE 2 ZOOM 8 ]]
The diagonal 2c/44 blinker fuse
(click above to open LifeViewer)
RLE: here Plaintext: here

See also

References

  1. ↑ Robert Wainwright (December 1971). Lifeline, vol 4, page 7.
  2. ↑ Jason Summers' jslife pattern collection. Retrieved on May 27, 2009.
  3. ↑ Alan Hensel's lifep.zip pattern collection.
  4. ↑ iNoMed (January 19, 2021). Re: Spaceship Discussion Thread (discussion thread) at the ConwayLife.com forums
  5. ↑ Connor Steppie (July 15, 2016). Re: Thread for your unsure discoveries (discussion thread) at the ConwayLife.com forums
  6. ↑ Lucy D'Agostino (April 21, 2021). Re: Thread for your unsure discoveries (discussion thread) at the ConwayLife.com forums
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