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	<id>https://wiki.bbchallenge.org/w/index.php?action=history&amp;feed=atom&amp;title=1RB2RB1LA_2LC0LB2LB_2RC2RA0LC</id>
	<title>1RB2RB1LA 2LC0LB2LB 2RC2RA0LC - Revision history</title>
	<link rel="self" type="application/atom+xml" href="https://wiki.bbchallenge.org/w/index.php?action=history&amp;feed=atom&amp;title=1RB2RB1LA_2LC0LB2LB_2RC2RA0LC"/>
	<link rel="alternate" type="text/html" href="https://wiki.bbchallenge.org/w/index.php?title=1RB2RB1LA_2LC0LB2LB_2RC2RA0LC&amp;action=history"/>
	<updated>2026-09-29T17:59:46Z</updated>
	<subtitle>Revision history for this page on the wiki</subtitle>
	<generator>MediaWiki 1.43.5</generator>
	<entry>
		<id>https://wiki.bbchallenge.org/w/index.php?title=1RB2RB1LA_2LC0LB2LB_2RC2RA0LC&amp;diff=8770&amp;oldid=prev</id>
		<title>A6P457 at 14:43, 29 September 2026</title>
		<link rel="alternate" type="text/html" href="https://wiki.bbchallenge.org/w/index.php?title=1RB2RB1LA_2LC0LB2LB_2RC2RA0LC&amp;diff=8770&amp;oldid=prev"/>
		<updated>2026-09-29T14:43:38Z</updated>

		<summary type="html">&lt;p&gt;&lt;/p&gt;
&lt;table style=&quot;background-color: #fff; color: #202122;&quot; data-mw=&quot;interface&quot;&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;tr class=&quot;diff-title&quot; lang=&quot;en&quot;&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;← Older revision&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;Revision as of 14:43, 29 September 2026&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l1&quot;&gt;Line 1:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 1:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;{{machine|1RB2RB1LA_2LC0LB2LB_2RC2RA0LC}}&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;{{machine|1RB2RB1LA_2LC0LB2LB_2RC2RA0LC}}&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;−&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;{{TM|1RB2RB1LA_2LC0LB2LB_2RC2RA0LC}} is &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;the current &lt;/del&gt;[[BLB]](3,3) champion blanking the tape after &amp;lt;math&amp;gt;10^{42745}&amp;lt;/math&amp;gt; steps&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;{{TM|1RB2RB1LA_2LC0LB2LB_2RC2RA0LC}} is &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;a former &lt;/ins&gt;[[BLB]](3,3) champion blanking the tape after &amp;lt;math&amp;gt;10^{42745}&amp;lt;/math&amp;gt; steps&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;== Analysis ==&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;== Analysis ==&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&amp;lt;pre&amp;gt;&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&amp;lt;pre&amp;gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;

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&lt;/table&gt;</summary>
		<author><name>A6P457</name></author>
	</entry>
	<entry>
		<id>https://wiki.bbchallenge.org/w/index.php?title=1RB2RB1LA_2LC0LB2LB_2RC2RA0LC&amp;diff=7994&amp;oldid=prev</id>
		<title>A6P457: Added category</title>
		<link rel="alternate" type="text/html" href="https://wiki.bbchallenge.org/w/index.php?title=1RB2RB1LA_2LC0LB2LB_2RC2RA0LC&amp;diff=7994&amp;oldid=prev"/>
		<updated>2026-07-09T15:57:12Z</updated>

		<summary type="html">&lt;p&gt;Added category&lt;/p&gt;
&lt;table style=&quot;background-color: #fff; color: #202122;&quot; data-mw=&quot;interface&quot;&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;tr class=&quot;diff-title&quot; lang=&quot;en&quot;&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;← Older revision&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;Revision as of 15:57, 9 July 2026&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l12&quot;&gt;Line 12:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 12:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;A(8,4) -&amp;gt; A(21,1) -&amp;gt; A(8,43) -&amp;gt; A(21,40) -&amp;gt; A(47,37) -&amp;gt; A(99,34) -&amp;gt; A(203,31) -&amp;gt; A(411,28) -&amp;gt; A(827,25) -&amp;gt; A(1659,22) -&amp;gt; A(3323,19) -&amp;gt; A(6651,16) -&amp;gt; A(13307,13) -&amp;gt; A(26619,10) -&amp;gt; A(53243,7) -&amp;gt; A(106491,4) -&amp;gt; A(212987,1) -&amp;gt; A(8,425975) -&amp;gt; ... -&amp;gt; A(13*2^141991-5,2) -&amp;gt; blank&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;A(8,4) -&amp;gt; A(21,1) -&amp;gt; A(8,43) -&amp;gt; A(21,40) -&amp;gt; A(47,37) -&amp;gt; A(99,34) -&amp;gt; A(203,31) -&amp;gt; A(411,28) -&amp;gt; A(827,25) -&amp;gt; A(1659,22) -&amp;gt; A(3323,19) -&amp;gt; A(6651,16) -&amp;gt; A(13307,13) -&amp;gt; A(26619,10) -&amp;gt; A(53243,7) -&amp;gt; A(106491,4) -&amp;gt; A(212987,1) -&amp;gt; A(8,425975) -&amp;gt; ... -&amp;gt; A(13*2^141991-5,2) -&amp;gt; blank&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&amp;lt;/pre&amp;gt;&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&amp;lt;/pre&amp;gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-side-deleted&quot;&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;[[Category:BB(3,3)]]&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;

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&lt;/table&gt;</summary>
		<author><name>A6P457</name></author>
	</entry>
	<entry>
		<id>https://wiki.bbchallenge.org/w/index.php?title=1RB2RB1LA_2LC0LB2LB_2RC2RA0LC&amp;diff=7993&amp;oldid=prev</id>
		<title>A6P457: Created page with &quot;{{machine|1RB2RB1LA_2LC0LB2LB_2RC2RA0LC}} {{TM|1RB2RB1LA_2LC0LB2LB_2RC2RA0LC}} is the current BLB(3,3) champion blanking the tape after &lt;math&gt;10^{42745}&lt;/math&gt; steps == Analysis == &lt;pre&gt; A(x,y)=2 C&gt; 2^x 0 1^y  A(x,y) -&gt; A(2x+5,y-3) if y&gt;2 A(x,0) -&gt; blank A(x,1) -&gt; A(8,2x+1) A(x,2) -&gt; blank  A(8,4) -&gt; A(21,1) -&gt; A(8,43) -&gt; A(21,40) -&gt; A(47,37) -&gt; A(99,34) -&gt; A(203,31) -&gt; A(411,28) -&gt; A(827,25) -&gt; A(1659,22) -&gt; A(3323,19) -&gt; A(6651,16) -&gt; A(13307,13) -&gt; A(26619,10) -&gt;...&quot;</title>
		<link rel="alternate" type="text/html" href="https://wiki.bbchallenge.org/w/index.php?title=1RB2RB1LA_2LC0LB2LB_2RC2RA0LC&amp;diff=7993&amp;oldid=prev"/>
		<updated>2026-07-09T15:56:22Z</updated>

		<summary type="html">&lt;p&gt;Created page with &amp;quot;{{machine|1RB2RB1LA_2LC0LB2LB_2RC2RA0LC}} {{TM|1RB2RB1LA_2LC0LB2LB_2RC2RA0LC}} is the current &lt;a href=&quot;/wiki/BLB&quot; class=&quot;mw-redirect&quot; title=&quot;BLB&quot;&gt;BLB&lt;/a&gt;(3,3) champion blanking the tape after &amp;lt;math&amp;gt;10^{42745}&amp;lt;/math&amp;gt; steps == Analysis == &amp;lt;pre&amp;gt; A(x,y)=2 C&amp;gt; 2^x 0 1^y  A(x,y) -&amp;gt; A(2x+5,y-3) if y&amp;gt;2 A(x,0) -&amp;gt; blank A(x,1) -&amp;gt; A(8,2x+1) A(x,2) -&amp;gt; blank  A(8,4) -&amp;gt; A(21,1) -&amp;gt; A(8,43) -&amp;gt; A(21,40) -&amp;gt; A(47,37) -&amp;gt; A(99,34) -&amp;gt; A(203,31) -&amp;gt; A(411,28) -&amp;gt; A(827,25) -&amp;gt; A(1659,22) -&amp;gt; A(3323,19) -&amp;gt; A(6651,16) -&amp;gt; A(13307,13) -&amp;gt; A(26619,10) -&amp;gt;...&amp;quot;&lt;/p&gt;
&lt;p&gt;&lt;b&gt;New page&lt;/b&gt;&lt;/p&gt;&lt;div&gt;{{machine|1RB2RB1LA_2LC0LB2LB_2RC2RA0LC}}&lt;br /&gt;
{{TM|1RB2RB1LA_2LC0LB2LB_2RC2RA0LC}} is the current [[BLB]](3,3) champion blanking the tape after &amp;lt;math&amp;gt;10^{42745}&amp;lt;/math&amp;gt; steps&lt;br /&gt;
== Analysis ==&lt;br /&gt;
&amp;lt;pre&amp;gt;&lt;br /&gt;
A(x,y)=2 C&amp;gt; 2^x 0 1^y&lt;br /&gt;
&lt;br /&gt;
A(x,y) -&amp;gt; A(2x+5,y-3) if y&amp;gt;2&lt;br /&gt;
A(x,0) -&amp;gt; blank&lt;br /&gt;
A(x,1) -&amp;gt; A(8,2x+1)&lt;br /&gt;
A(x,2) -&amp;gt; blank&lt;br /&gt;
&lt;br /&gt;
A(8,4) -&amp;gt; A(21,1) -&amp;gt; A(8,43) -&amp;gt; A(21,40) -&amp;gt; A(47,37) -&amp;gt; A(99,34) -&amp;gt; A(203,31) -&amp;gt; A(411,28) -&amp;gt; A(827,25) -&amp;gt; A(1659,22) -&amp;gt; A(3323,19) -&amp;gt; A(6651,16) -&amp;gt; A(13307,13) -&amp;gt; A(26619,10) -&amp;gt; A(53243,7) -&amp;gt; A(106491,4) -&amp;gt; A(212987,1) -&amp;gt; A(8,425975) -&amp;gt; ... -&amp;gt; A(13*2^141991-5,2) -&amp;gt; blank&lt;br /&gt;
&amp;lt;/pre&amp;gt;&lt;/div&gt;</summary>
		<author><name>A6P457</name></author>
	</entry>
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