Difference between revisions of "B29"

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{{Spaceship|name=B29|pname=b29|c=29|p=4|s=c/4|dir=Diagonal|bx=10|by=17|h=30|discoverer=Hartmut Holzwart|discoveryear=2004|animated=true|rle=true|synthesis=29|life105=true|life106=true|plaintext=true|synthesis=27|synthesisRLE=true}}
{{Spaceship
'''B29''' is a [[c/4 diagonal|c/4]] diagonal [[spaceship]] discovered by [[Hartmut Holzwart]] in September [[:Category:patterns found in 2004|2004]].<ref>{{CiteLexicon|lex_b.htm#b29}}</ref> In [[generation]] 2 it produces an isolated [[Polyomino#dominoes|domino]] [[spark]] that can be used to perturb reactions. In terms of its [[:Category:patterns with 29 cells|29]] [[cell]]s, it is the fourth smallest c/4 diagonal spaceship, as well as the smallest c/4 spaceship to not exhibit [[Types_of_spaceships#Glide_symmetric_spaceship|glide symmetry]]. There are three ways in which a [[glider]] can non-trivially follow a B29, as shown below.
|name             = B29
|pname           = b29
|type            = Tagalong
|c               = 29
|bx              = 10
|by              = 17
|dir              = Diagonal
|p               = 4
|m                = 4
|s               = c/4
|z                = c/4
|h               = 30
|discoverer       = Hartmut Holzwart
|discoveryear     = 2004
|rulemin          = B3/S23
|rulemax          = B378/S2378
|rulespecial      = [[Conway's Game of Life|Conway Life]]
|isorulemin      = B3-e/S2-cn3-ceky
|isorulemax      = B34eijkqt5ceky6-ik78/S234centy5-inq6-an78
|synthesis       = 25
|synthesisRLE    = true
|plaintext        = true
|rle              = true
|animated        = true
|viewerconfig    = #C [[ TRACKLOOP 4 -1/4 -1/4 THUMBSIZE 2 GPS 4 ]]
|apgcode          = xq4_go217z1rmkg4szon7z21
|pentadecathlonid = 29P4H1V1.1
}}
'''B29''' is a [[c/4 diagonal]] [[spaceship]] discovered by [[Hartmut Holzwart]] in September {{year|2004}}.<ref>{{CiteLexicon|lex_b.htm#b29}}</ref> In [[generation]] 2 it produces an isolated [[Polyomino#dominoes|domino]] [[spark]] that can be used to perturb reactions. In terms of its {{cells|29}} [[cell]]s, it is the fourth smallest c/4 diagonal spaceship, as well as the smallest c/4 spaceship to not exhibit [[Types_of_spaceships#Glide_symmetric_spaceship|glide symmetry]]. There are three ways in which a [[glider]] can non-trivially follow a B29, as shown below.
 
Due to a synthesis completed by [[Tanner Jacobi]] in April {{year|2015}},<ref name="post18531" /> B29 is one of relatively few elementary diagonal spaceships with a known glider synthesis.
 
Two gliders can be seen at the front of the ship, one of these being temporary and the other permanent, making this a [[tagalong]]. The other glider does not stay as a glider but still moves like one.


==Image gallery==
==Image gallery==
{|
{|
|-
|-
|[[Image:B29withgliders.png|framed|left|Three ways in which gliders can non-trivially follow a B29<br/>{{JavaRLE|B29withgliders}}]]
|[[Image:B29withgliders.png|framed|left|Three ways in which gliders can non-trivially follow a B29<br/>{{JavaRLE|b29withgliders}}]]
|}
|}


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==References==
==References==
<references/>
<references>
<ref name="post18531">{{LinkForumThread
|format = ref
|title  = Re: Small Spaceship Syntheses
|p      = 18531
|author = Tanner Jacobi
|date  = April 5, 2015
}}</ref>
</references>


== External links ==
== External links ==
{{LinkLexicon|lex_b.htm#b29}}
{{LinkCatagolue|xq4_go217z1rmkg4szon7z21}}
{{LinkCatagolue|xq4_go217z1rmkg4szon7z21}}
{{LinkPentadecathlonObject|29P4H1V1.1}}

Revision as of 04:57, 30 May 2020

B29
3b2o3b$2b2o4b$4bo3b$6b2o$5bo2b2$4bo2bo$b2obo3b$2o4bob$2bobo2bo$7bo$4bo 2bo$5bobo$5bobo$6b2o$6bo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ AUTOSTART ]] #C [[ TRACKLOOP 4 -1/4 -1/4 THUMBSIZE 2 GPS 4 ]]
View animated image
View static image
Pattern type Tagalong
Spaceship
Number of cells 29
Bounding box 10 × 17
Direction Diagonal
Period 4
Mod 4
Speed c/4 | c/4
Heat 30
Discovered by Hartmut Holzwart
Year of discovery 2004

B29 is a c/4 diagonal spaceship discovered by Hartmut Holzwart in September 2004.[1] In generation 2 it produces an isolated domino spark that can be used to perturb reactions. In terms of its 29 cells, it is the fourth smallest c/4 diagonal spaceship, as well as the smallest c/4 spaceship to not exhibit glide symmetry. There are three ways in which a glider can non-trivially follow a B29, as shown below.

Due to a synthesis completed by Tanner Jacobi in April 2015,[2] B29 is one of relatively few elementary diagonal spaceships with a known glider synthesis.

Two gliders can be seen at the front of the ship, one of these being temporary and the other permanent, making this a tagalong. The other glider does not stay as a glider but still moves like one.

Image gallery

Three ways in which gliders can non-trivially follow a B29
Download RLE: click here

See also

References

  1. ↑ "B29". The Life Lexicon. Stephen Silver.
  2. ↑ Tanner Jacobi (April 5, 2015). Re: Small Spaceship Syntheses (discussion thread) at the ConwayLife.com forums

External links

Retrieved from "https://conwaylife.com/w/index.php?title=B29&oldid=72101"