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	<title>Rule:Worm-complement - Revision history</title>
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	<updated>2026-11-14T16:16:09Z</updated>
	<subtitle>Revision history for this page on the wiki</subtitle>
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	<entry>
		<id>https://conwaylife.com/w/index.php?title=Rule:Worm-complement&amp;diff=64655&amp;oldid=prev</id>
		<title>Dvgrn: Another rule sharing Rule:Worm-shared</title>
		<link rel="alternate" type="text/html" href="https://conwaylife.com/w/index.php?title=Rule:Worm-complement&amp;diff=64655&amp;oldid=prev"/>
		<updated>2019-10-28T22:01:58Z</updated>

		<summary type="html">&lt;p&gt;Another rule sharing Rule:Worm-shared&lt;/p&gt;
&lt;p&gt;&lt;b&gt;New page&lt;/b&gt;&lt;/p&gt;&lt;div&gt;@RULE Worm-complement&lt;br /&gt;
&lt;br /&gt;
Paterson&amp;#039;s worms - Erase solid regions, leaving only points with at least&lt;br /&gt;
one uneaten edge, and the single point or line with an arrow.  Use this&lt;br /&gt;
with rules like 1252121 and 1525115, which fill regions with density&lt;br /&gt;
near 100%, to see the uneaten paths within the regions:  After running&lt;br /&gt;
such a rule for a while, switch to this rule and run for 1 generation.&lt;br /&gt;
(by Dean Hickerson, 11/20/2008)&lt;br /&gt;
&lt;br /&gt;
States:&lt;br /&gt;
0            empty (unvisited point or line)&lt;br /&gt;
1-6          &amp;#039;point with arrow&amp;#039;, showing direction of next movement&lt;br /&gt;
             (1=E; 2=SE; 3=SW; 4=W; 5=NW; 6=NE)&lt;br /&gt;
7            point that&amp;#039;s been visited&lt;br /&gt;
8,9,10       edge -  (8=line; 9=E arrow; 10=W arrow)&lt;br /&gt;
11,12,13     edge /  (11=line; 12=NE arrow; 13=SW arrow)&lt;br /&gt;
14,15,16     edge \  (14=line; 15=SE arrow; 16=NW arrow)&lt;br /&gt;
&lt;br /&gt;
@TABLE&lt;br /&gt;
&lt;br /&gt;
n_states:17&lt;br /&gt;
neighborhood:Moore&lt;br /&gt;
symmetries:none&lt;br /&gt;
&lt;br /&gt;
var a0={0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16}&lt;br /&gt;
var a1={0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16}&lt;br /&gt;
var a2={0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16}&lt;br /&gt;
var a3={0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16}&lt;br /&gt;
var a4={0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16}&lt;br /&gt;
var a5={0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16}&lt;br /&gt;
var a6={0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16}&lt;br /&gt;
var a7={0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16}&lt;br /&gt;
var line={8,11,14}&lt;br /&gt;
&lt;br /&gt;
# visited point dies if it has 6 lines out from it&lt;br /&gt;
7,11,a0,8,a1,14,11,8,14,0&lt;br /&gt;
&lt;br /&gt;
# undirected lines die&lt;br /&gt;
line,a0,a1,a2,a3,a4,a5,a6,a7,0&lt;/div&gt;</summary>
		<author><name>Dvgrn</name></author>
	</entry>
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