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	<title>Triangular Connection - Revision history</title>
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	<updated>2026-04-18T19:59:11Z</updated>
	<subtitle>Revision history for this page on the wiki</subtitle>
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		<id>http://sudopedia.sudocue.net/index.php?title=Triangular_Connection&amp;diff=575&amp;oldid=prev</id>
		<title>127.0.0.1: Created page with &quot;In Sudoku-X, the &#039;&#039;&#039;triangular connection&#039;&#039;&#039; solving technique can be stated as follows: : Consider a digit &#039;&#039;&#039;X&#039;&#039;&#039;. Suppose a diagonal contains only two cel...&quot;</title>
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		<updated>2021-10-26T19:53:45Z</updated>

		<summary type="html">&lt;p&gt;Created page with &amp;quot;In &lt;a href=&quot;/index.php?title=Sudoku-X&quot; title=&quot;Sudoku-X&quot;&gt;Sudoku-X&lt;/a&gt;, the &amp;#039;&amp;#039;&amp;#039;triangular connection&amp;#039;&amp;#039;&amp;#039; &lt;a href=&quot;/index.php?title=Solving_technique&quot; title=&quot;Solving technique&quot;&gt;solving technique&lt;/a&gt; can be stated as follows: : Consider a &lt;a href=&quot;/index.php?title=Digit&quot; title=&quot;Digit&quot;&gt;digit&lt;/a&gt; &amp;#039;&amp;#039;&amp;#039;X&amp;#039;&amp;#039;&amp;#039;. Suppose a &lt;a href=&quot;/index.php?title=Diagonal&quot; title=&quot;Diagonal&quot;&gt;diagonal&lt;/a&gt; contains only two cel...&amp;quot;&lt;/p&gt;
&lt;p&gt;&lt;b&gt;New page&lt;/b&gt;&lt;/p&gt;&lt;div&gt;In [[Sudoku-X]], the &amp;#039;&amp;#039;&amp;#039;triangular connection&amp;#039;&amp;#039;&amp;#039; [[solving technique]] can be stated as follows:&lt;br /&gt;
: Consider a [[digit]] &amp;#039;&amp;#039;&amp;#039;X&amp;#039;&amp;#039;&amp;#039;. Suppose a [[diagonal]] contains only two [[cell]]s that has &amp;#039;&amp;#039;&amp;#039;X&amp;#039;&amp;#039;&amp;#039; as a [[candidate]], call them &amp;#039;&amp;#039;&amp;#039;A&amp;#039;&amp;#039;&amp;#039; and &amp;#039;&amp;#039;&amp;#039;B&amp;#039;&amp;#039;&amp;#039;. Suppose another [[constraint]] contains only two [[cell]]s that has &amp;#039;&amp;#039;&amp;#039;X&amp;#039;&amp;#039;&amp;#039; as a [[candidate]], call them &amp;#039;&amp;#039;&amp;#039;C&amp;#039;&amp;#039;&amp;#039; and &amp;#039;&amp;#039;&amp;#039;D&amp;#039;&amp;#039;&amp;#039;. If &amp;#039;&amp;#039;&amp;#039;A&amp;#039;&amp;#039;&amp;#039; and &amp;#039;&amp;#039;&amp;#039;C&amp;#039;&amp;#039;&amp;#039; are [[peer]]s, then we can [[eliminate]] &amp;#039;&amp;#039;&amp;#039;X&amp;#039;&amp;#039;&amp;#039; from any cell that is [[see]]n by both &amp;#039;&amp;#039;&amp;#039;B&amp;#039;&amp;#039;&amp;#039; and &amp;#039;&amp;#039;&amp;#039;D&amp;#039;&amp;#039;&amp;#039;.&lt;br /&gt;
&lt;br /&gt;
Double crossover is a special case of [[Triangular Connection]], where the constraint containing &amp;#039;&amp;#039;&amp;#039;C&amp;#039;&amp;#039;&amp;#039; and &amp;#039;&amp;#039;&amp;#039;D&amp;#039;&amp;#039;&amp;#039; is the other diagonal.&lt;br /&gt;
&lt;br /&gt;
Like the [[Double Crossover]] technique, the triangular connection technique can be replicated using [[Color Wing]] with two [[cluster]]s, or by using the following [[chain]]:&lt;br /&gt;
 (X): B = A - C = D&lt;br /&gt;
&lt;br /&gt;
== External Link ==&lt;br /&gt;
* [http://www.djape.net/sudoku/forum/viewtopic.php?t=237 djape.net forum post]&lt;br /&gt;
&lt;br /&gt;
== See Also ==&lt;br /&gt;
* [[Crossover]]&lt;br /&gt;
* [[Double Crossover]]&lt;br /&gt;
&lt;br /&gt;
{{example}}&lt;br /&gt;
&lt;br /&gt;
[[Category:Solving Techniques]]&lt;br /&gt;
[[Category:Sudoku-X]]&lt;/div&gt;</summary>
		<author><name>127.0.0.1</name></author>
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