<?xml version="1.0"?>
<feed xmlns="http://www.w3.org/2005/Atom" xml:lang="en">
	<id>https://wiki.bbchallenge.org/w/index.php?action=history&amp;feed=atom&amp;title=1RB2RA1RA2RB_2LB3LA0RB0RA</id>
	<title>1RB2RA1RA2RB 2LB3LA0RB0RA - 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=1RB2RA1RA2RB_2LB3LA0RB0RA"/>
	<link rel="alternate" type="text/html" href="https://wiki.bbchallenge.org/w/index.php?title=1RB2RA1RA2RB_2LB3LA0RB0RA&amp;action=history"/>
	<updated>2026-09-01T21:00:35Z</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=1RB2RA1RA2RB_2LB3LA0RB0RA&amp;diff=7986&amp;oldid=prev</id>
		<title>A6P457: Restored categories</title>
		<link rel="alternate" type="text/html" href="https://wiki.bbchallenge.org/w/index.php?title=1RB2RA1RA2RB_2LB3LA0RB0RA&amp;diff=7986&amp;oldid=prev"/>
		<updated>2026-07-07T13:05:56Z</updated>

		<summary type="html">&lt;p&gt;Restored categories&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 13:05, 7 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-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 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;{{machine|1RB2RA1RA2RB_2LB3LA0RB0RA}}&lt;/ins&gt;&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;{{TM|1RB2RA1RA2RB_2LB3LA0RB0RA}} is the current [[BLB]](2,4) champion blanking the tape after 1,367,361,263,049 steps&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;{{TM|1RB2RA1RA2RB_2LB3LA0RB0RA}} is the current [[BLB]](2,4) champion blanking the tape after 1,367,361,263,049 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 colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l10&quot;&gt;Line 10:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 11:&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(1,0,0) -&amp;gt; A(0,1,1) -&amp;gt; A(1,2,1) -&amp;gt; A(0,1,7) -&amp;gt; A(1,8,1) -&amp;gt; A(0,1,22) -&amp;gt; A(1,23,1) -&amp;gt; A(2,57,1) -&amp;gt; A(3,142,1) -&amp;gt; A(0,3,357) -&amp;gt; A(1,363,1) -&amp;gt; A(2,907,1) -&amp;gt; A(3,2267,1) -&amp;gt; A(4,5667,1) -&amp;gt; A(5,14167,1) -&amp;gt; A(6,35417,1) -&amp;gt; A(7,88542,1) -&amp;gt; A(0,7,221357) -&amp;gt; A(1,221373,1) -&amp;gt; A(2,553432,1) -&amp;gt; A(0,2,1383532) -&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(1,0,0) -&amp;gt; A(0,1,1) -&amp;gt; A(1,2,1) -&amp;gt; A(0,1,7) -&amp;gt; A(1,8,1) -&amp;gt; A(0,1,22) -&amp;gt; A(1,23,1) -&amp;gt; A(2,57,1) -&amp;gt; A(3,142,1) -&amp;gt; A(0,3,357) -&amp;gt; A(1,363,1) -&amp;gt; A(2,907,1) -&amp;gt; A(3,2267,1) -&amp;gt; A(4,5667,1) -&amp;gt; A(5,14167,1) -&amp;gt; A(6,35417,1) -&amp;gt; A(7,88542,1) -&amp;gt; A(0,7,221357) -&amp;gt; A(1,221373,1) -&amp;gt; A(2,553432,1) -&amp;gt; A(0,2,1383532) -&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(2,4)]]&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;

&lt;!-- diff cache key mediawiki:diff:1.41:old-7985:rev-7986:php=table --&gt;
&lt;/table&gt;</summary>
		<author><name>A6P457</name></author>
	</entry>
	<entry>
		<id>https://wiki.bbchallenge.org/w/index.php?title=1RB2RA1RA2RB_2LB3LA0RB0RA&amp;diff=7985&amp;oldid=prev</id>
		<title>Azerty: Improved readability</title>
		<link rel="alternate" type="text/html" href="https://wiki.bbchallenge.org/w/index.php?title=1RB2RA1RA2RB_2LB3LA0RB0RA&amp;diff=7985&amp;oldid=prev"/>
		<updated>2026-07-06T20:53:10Z</updated>

		<summary type="html">&lt;p&gt;Improved readability&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 20:53, 6 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-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; 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;&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;{{machine|1RB2RA1RA2RB_2LB3LA0RB0RA}}&lt;/del&gt;&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|1RB2RA1RA2RB_2LB3LA0RB0RA}} is the current [[BLB]](2,4) champion blanking the tape after 1,367,361,263,049 steps&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|1RB2RA1RA2RB_2LB3LA0RB0RA}} is the current [[BLB]](2,4) champion blanking the tape after 1,367,361,263,049 steps&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;.&lt;/del&gt;&lt;/div&gt;&lt;/td&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-side-added&quot;&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;
&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;A(x,y,z)=1^x 0 1^y B&amp;lt; 2^z&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;A(x,y,z) = 1^x 0 1^y B&amp;lt; 2^z&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;br&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;br&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;A(x,2y,z)-&amp;gt;A(0,x,5y+z+1) if x&amp;gt;0&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;A(x,2y,z) -&amp;gt; A(0,x,5y+z+1) if x&amp;gt;0&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;A(0,2y,z)-&amp;gt;blank&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;A(0,2y,z) -&amp;gt; blank&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;A(x,2y+1,z)-&amp;gt;A(x+1,5y+z+1,1)&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;A(x,2y+1,z) -&amp;gt; A(x+1,5y+z+1,1)&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;br&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;br&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;A(1,0,0)-&amp;gt;A(0,1,1)-&amp;gt;A(1,2,1)-&amp;gt;A(0,1,7)-&amp;gt;A(1,8,1)-&amp;gt;A(0,1,22)-&amp;gt;A(1,23,1)-&amp;gt;A(2,57,1)-&amp;gt;A(3,142,1)-&amp;gt;A(0,3,357)-&amp;gt;A(1,363,1)-&amp;gt;A(2,907,1)-&amp;gt;A(3,2267,1)-&amp;gt;A(4,5667,1)-&amp;gt;A(5,14167,1)-&amp;gt;A(6,35417,1)-&amp;gt;A(7,88542,1)-&amp;gt;A(0,7,221357)-&amp;gt;A(1,221373,1)-&amp;gt;A(2,553432,1)-&amp;gt;A(0,2,1383532)-&amp;gt;blank&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;A(1,0,0) -&amp;gt; A(0,1,1) -&amp;gt; A(1,2,1) -&amp;gt; A(0,1,7) -&amp;gt; A(1,8,1) -&amp;gt; A(0,1,22) -&amp;gt; A(1,23,1) -&amp;gt; A(2,57,1) -&amp;gt; A(3,142,1) -&amp;gt; A(0,3,357) -&amp;gt; A(1,363,1) -&amp;gt; A(2,907,1) -&amp;gt; A(3,2267,1) -&amp;gt; A(4,5667,1) -&amp;gt; A(5,14167,1) -&amp;gt; A(6,35417,1) -&amp;gt; A(7,88542,1) -&amp;gt; A(0,7,221357) -&amp;gt; A(1,221373,1) -&amp;gt; A(2,553432,1) -&amp;gt; A(0,2,1383532) -&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 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;&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;[[Category:BB(2,4)]]&lt;/del&gt;&lt;/div&gt;&lt;/td&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-side-added&quot;&gt;&lt;/td&gt;&lt;/tr&gt;

&lt;!-- diff cache key mediawiki:diff:1.41:old-7981:rev-7985:php=table --&gt;
&lt;/table&gt;</summary>
		<author><name>Azerty</name></author>
	</entry>
	<entry>
		<id>https://wiki.bbchallenge.org/w/index.php?title=1RB2RA1RA2RB_2LB3LA0RB0RA&amp;diff=7981&amp;oldid=prev</id>
		<title>Polygon: Added Categories</title>
		<link rel="alternate" type="text/html" href="https://wiki.bbchallenge.org/w/index.php?title=1RB2RA1RA2RB_2LB3LA0RB0RA&amp;diff=7981&amp;oldid=prev"/>
		<updated>2026-07-06T19:20:27Z</updated>

		<summary type="html">&lt;p&gt;Added Categories&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 19:20, 6 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-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; 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|1RB2RA1RA2RB_2LB3LA0RB0RA}} is the current [[BLB]](2,4) champion blanking the tape after 1,367,361,263,049 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;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;{{machine|1RB2RA1RA2RB_2LB3LA0RB0RA}}&lt;/ins&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;{{TM|1RB2RA1RA2RB_2LB3LA0RB0RA}} is the current [[BLB]](2,4) champion blanking the tape after 1,367,361,263,049 steps&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;.&lt;/ins&gt;&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;
&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l10&quot;&gt;Line 10:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 11:&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(1,0,0)-&amp;gt;A(0,1,1)-&amp;gt;A(1,2,1)-&amp;gt;A(0,1,7)-&amp;gt;A(1,8,1)-&amp;gt;A(0,1,22)-&amp;gt;A(1,23,1)-&amp;gt;A(2,57,1)-&amp;gt;A(3,142,1)-&amp;gt;A(0,3,357)-&amp;gt;A(1,363,1)-&amp;gt;A(2,907,1)-&amp;gt;A(3,2267,1)-&amp;gt;A(4,5667,1)-&amp;gt;A(5,14167,1)-&amp;gt;A(6,35417,1)-&amp;gt;A(7,88542,1)-&amp;gt;A(0,7,221357)-&amp;gt;A(1,221373,1)-&amp;gt;A(2,553432,1)-&amp;gt;A(0,2,1383532)-&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(1,0,0)-&amp;gt;A(0,1,1)-&amp;gt;A(1,2,1)-&amp;gt;A(0,1,7)-&amp;gt;A(1,8,1)-&amp;gt;A(0,1,22)-&amp;gt;A(1,23,1)-&amp;gt;A(2,57,1)-&amp;gt;A(3,142,1)-&amp;gt;A(0,3,357)-&amp;gt;A(1,363,1)-&amp;gt;A(2,907,1)-&amp;gt;A(3,2267,1)-&amp;gt;A(4,5667,1)-&amp;gt;A(5,14167,1)-&amp;gt;A(6,35417,1)-&amp;gt;A(7,88542,1)-&amp;gt;A(0,7,221357)-&amp;gt;A(1,221373,1)-&amp;gt;A(2,553432,1)-&amp;gt;A(0,2,1383532)-&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(2,4)]]&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;

&lt;!-- diff cache key mediawiki:diff:1.41:old-7980:rev-7981:php=table --&gt;
&lt;/table&gt;</summary>
		<author><name>Polygon</name></author>
	</entry>
	<entry>
		<id>https://wiki.bbchallenge.org/w/index.php?title=1RB2RA1RA2RB_2LB3LA0RB0RA&amp;diff=7980&amp;oldid=prev</id>
		<title>A6P457: Created page with &quot;{{TM|1RB2RA1RA2RB_2LB3LA0RB0RA}} is the current BLB(2,4) champion blanking the tape after 1,367,361,263,049 steps == Analysis == &lt;pre&gt; A(x,y,z)=1^x 0 1^y B&lt; 2^z  A(x,2y,z)-&gt;A(0,x,5y+z+1) if x&gt;0 A(0,2y,z)-&gt;blank A(x,2y+1,z)-&gt;A(x+1,5y+z+1,1)  A(1,0,0)-&gt;A(0,1,1)-&gt;A(1,2,1)-&gt;A(0,1,7)-&gt;A(1,8,1)-&gt;A(0,1,22)-&gt;A(1,23,1)-&gt;A(2,57,1)-&gt;A(3,142,1)-&gt;A(0,3,357)-&gt;A(1,363,1)-&gt;A(2,907,1)-&gt;A(3,2267,1)-&gt;A(4,5667,1)-&gt;A(5,14167,1)-&gt;A(6,35417,1)-&gt;A(7,88542,1)-&gt;A(0,7,221357)-&gt;A(1,221373,1)-&gt;A...&quot;</title>
		<link rel="alternate" type="text/html" href="https://wiki.bbchallenge.org/w/index.php?title=1RB2RA1RA2RB_2LB3LA0RB0RA&amp;diff=7980&amp;oldid=prev"/>
		<updated>2026-07-06T19:09:20Z</updated>

		<summary type="html">&lt;p&gt;Created page with &amp;quot;{{TM|1RB2RA1RA2RB_2LB3LA0RB0RA}} is the current &lt;a href=&quot;/wiki/BLB&quot; class=&quot;mw-redirect&quot; title=&quot;BLB&quot;&gt;BLB&lt;/a&gt;(2,4) champion blanking the tape after 1,367,361,263,049 steps == Analysis == &amp;lt;pre&amp;gt; A(x,y,z)=1^x 0 1^y B&amp;lt; 2^z  A(x,2y,z)-&amp;gt;A(0,x,5y+z+1) if x&amp;gt;0 A(0,2y,z)-&amp;gt;blank A(x,2y+1,z)-&amp;gt;A(x+1,5y+z+1,1)  A(1,0,0)-&amp;gt;A(0,1,1)-&amp;gt;A(1,2,1)-&amp;gt;A(0,1,7)-&amp;gt;A(1,8,1)-&amp;gt;A(0,1,22)-&amp;gt;A(1,23,1)-&amp;gt;A(2,57,1)-&amp;gt;A(3,142,1)-&amp;gt;A(0,3,357)-&amp;gt;A(1,363,1)-&amp;gt;A(2,907,1)-&amp;gt;A(3,2267,1)-&amp;gt;A(4,5667,1)-&amp;gt;A(5,14167,1)-&amp;gt;A(6,35417,1)-&amp;gt;A(7,88542,1)-&amp;gt;A(0,7,221357)-&amp;gt;A(1,221373,1)-&amp;gt;A...&amp;quot;&lt;/p&gt;
&lt;p&gt;&lt;b&gt;New page&lt;/b&gt;&lt;/p&gt;&lt;div&gt;{{TM|1RB2RA1RA2RB_2LB3LA0RB0RA}} is the current [[BLB]](2,4) champion blanking the tape after 1,367,361,263,049 steps&lt;br /&gt;
== Analysis ==&lt;br /&gt;
&amp;lt;pre&amp;gt;&lt;br /&gt;
A(x,y,z)=1^x 0 1^y B&amp;lt; 2^z&lt;br /&gt;
&lt;br /&gt;
A(x,2y,z)-&amp;gt;A(0,x,5y+z+1) if x&amp;gt;0&lt;br /&gt;
A(0,2y,z)-&amp;gt;blank&lt;br /&gt;
A(x,2y+1,z)-&amp;gt;A(x+1,5y+z+1,1)&lt;br /&gt;
&lt;br /&gt;
A(1,0,0)-&amp;gt;A(0,1,1)-&amp;gt;A(1,2,1)-&amp;gt;A(0,1,7)-&amp;gt;A(1,8,1)-&amp;gt;A(0,1,22)-&amp;gt;A(1,23,1)-&amp;gt;A(2,57,1)-&amp;gt;A(3,142,1)-&amp;gt;A(0,3,357)-&amp;gt;A(1,363,1)-&amp;gt;A(2,907,1)-&amp;gt;A(3,2267,1)-&amp;gt;A(4,5667,1)-&amp;gt;A(5,14167,1)-&amp;gt;A(6,35417,1)-&amp;gt;A(7,88542,1)-&amp;gt;A(0,7,221357)-&amp;gt;A(1,221373,1)-&amp;gt;A(2,553432,1)-&amp;gt;A(0,2,1383532)-&amp;gt;blank&lt;br /&gt;
&amp;lt;/pre&amp;gt;&lt;/div&gt;</summary>
		<author><name>A6P457</name></author>
	</entry>
</feed>