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	<id>https://petalcrashers.net/mediawiki/index.php?action=history&amp;feed=atom&amp;title=Basic_corner_cases</id>
	<title>Basic corner cases - Revision history</title>
	<link rel="self" type="application/atom+xml" href="https://petalcrashers.net/mediawiki/index.php?action=history&amp;feed=atom&amp;title=Basic_corner_cases"/>
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	<updated>2026-04-09T01:33:44Z</updated>
	<subtitle>Revision history for this page on the wiki</subtitle>
	<generator>MediaWiki 1.31.10</generator>
	<entry>
		<id>https://petalcrashers.net/mediawiki/index.php?title=Basic_corner_cases&amp;diff=316&amp;oldid=prev</id>
		<title>Notester82: Changed &quot;he rule of thumb&quot; to &quot;the rule of thumb&quot;</title>
		<link rel="alternate" type="text/html" href="https://petalcrashers.net/mediawiki/index.php?title=Basic_corner_cases&amp;diff=316&amp;oldid=prev"/>
		<updated>2021-08-24T19:13:00Z</updated>

		<summary type="html">&lt;p&gt;Changed &amp;quot;he rule of thumb&amp;quot; to &amp;quot;the rule of thumb&amp;quot;&lt;/p&gt;
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				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #222; text-align: center;&quot;&gt;← Older revision&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #222; text-align: center;&quot;&gt;Revision as of 19:13, 24 August 2021&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;
  &lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 1:&lt;/td&gt;
  &lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 1:&lt;/td&gt;
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&lt;tr&gt;
  &lt;td class=&quot;diff-marker&quot;&gt;−&lt;/td&gt;
  &lt;td style=&quot;color: #222; 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;The same-distance priority rules for which direction a petal will move when pushed from multiple sides lead to a set of eight '''basic corner cases''' that players should keep in mind when evaluating whether or not a link will work correctly. Because the corner cases resolve by giving priority to right, then up/down, then left, &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;he&lt;/del&gt; rule of thumb is that chains will work more often when they are going to the right, and less often when they are going to the left. The priority order does not apply if the two bursting petals are different distances from the petals which caused their groups to burst to begin with.&lt;/div&gt;&lt;/td&gt;
  &lt;td class=&quot;diff-marker&quot;&gt;+&lt;/td&gt;
  &lt;td style=&quot;color: #222; 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;The same-distance priority rules for which direction a petal will move when pushed from multiple sides lead to a set of eight '''basic corner cases''' that players should keep in mind when evaluating whether or not a link will work correctly. Because the corner cases resolve by giving priority to right, then up/down, then left, &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;the&lt;/ins&gt; rule of thumb is that chains will work more often when they are going to the right, and less often when they are going to the left. The priority order does not apply if the two bursting petals are different distances from the petals which caused their groups to burst to begin with.&lt;/div&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
  &lt;td class=&quot;diff-marker&quot;&gt;&amp;#160;&lt;/td&gt;
  &lt;td style=&quot;background-color: #f8f9fa; color: #222; 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;/td&gt;
  &lt;td class=&quot;diff-marker&quot;&gt;&amp;#160;&lt;/td&gt;
  &lt;td style=&quot;background-color: #f8f9fa; color: #222; 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;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
  &lt;td class=&quot;diff-marker&quot;&gt;&amp;#160;&lt;/td&gt;
  &lt;td style=&quot;background-color: #f8f9fa; color: #222; 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;=== The eight situations ===&lt;/div&gt;&lt;/td&gt;
  &lt;td class=&quot;diff-marker&quot;&gt;&amp;#160;&lt;/td&gt;
  &lt;td style=&quot;background-color: #f8f9fa; color: #222; 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;=== The eight situations ===&lt;/div&gt;&lt;/td&gt;
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&lt;/table&gt;</summary>
		<author><name>Notester82</name></author>
		
	</entry>
	<entry>
		<id>https://petalcrashers.net/mediawiki/index.php?title=Basic_corner_cases&amp;diff=291&amp;oldid=prev</id>
		<title>Zircean at 16:31, 6 July 2021</title>
		<link rel="alternate" type="text/html" href="https://petalcrashers.net/mediawiki/index.php?title=Basic_corner_cases&amp;diff=291&amp;oldid=prev"/>
		<updated>2021-07-06T16:31:03Z</updated>

		<summary type="html">&lt;p&gt;&lt;/p&gt;
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				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #222; text-align: center;&quot;&gt;← Older revision&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #222; text-align: center;&quot;&gt;Revision as of 16:31, 6 July 2021&lt;/td&gt;
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  &lt;td class=&quot;diff-marker&quot;&gt;&amp;#160;&lt;/td&gt;
  &lt;td style=&quot;background-color: #f8f9fa; color: #222; 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;petalboard width=&quot;5&quot; height=&quot;5&quot; size=&quot;small&quot;&amp;gt;,,,,;,,b,b,;,y,y,b,;,,,,;,,,,&amp;lt;/petalboard&amp;gt;&lt;/div&gt;&lt;/td&gt;
  &lt;td class=&quot;diff-marker&quot;&gt;&amp;#160;&lt;/td&gt;
  &lt;td style=&quot;background-color: #f8f9fa; color: #222; 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;petalboard width=&quot;5&quot; height=&quot;5&quot; size=&quot;small&quot;&amp;gt;,,,,;,,b,b,;,y,y,b,;,,,,;,,,,&amp;lt;/petalboard&amp;gt;&lt;/div&gt;&lt;/td&gt;
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  &lt;td class=&quot;diff-marker&quot;&gt;&amp;#160;&lt;/td&gt;
  &lt;td style=&quot;background-color: #f8f9fa; color: #222; 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;|}&lt;/div&gt;&lt;/td&gt;
  &lt;td class=&quot;diff-marker&quot;&gt;&amp;#160;&lt;/td&gt;
  &lt;td style=&quot;background-color: #f8f9fa; color: #222; 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;|}&lt;/div&gt;&lt;/td&gt;
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&lt;tr&gt;
  &lt;td colspan=&quot;2&quot; class=&quot;diff-empty&quot;&gt;&amp;#160;&lt;/td&gt;
  &lt;td class=&quot;diff-marker&quot;&gt;+&lt;/td&gt;
  &lt;td style=&quot;color: #222; 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;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
  &lt;td colspan=&quot;2&quot; class=&quot;diff-empty&quot;&gt;&amp;#160;&lt;/td&gt;
  &lt;td class=&quot;diff-marker&quot;&gt;+&lt;/td&gt;
  &lt;td style=&quot;color: #222; 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;[[Category:Movement]]&lt;/div&gt;&lt;/td&gt;
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&lt;/table&gt;</summary>
		<author><name>Zircean</name></author>
		
	</entry>
	<entry>
		<id>https://petalcrashers.net/mediawiki/index.php?title=Basic_corner_cases&amp;diff=288&amp;oldid=prev</id>
		<title>Zircean: /* The eight situations */</title>
		<link rel="alternate" type="text/html" href="https://petalcrashers.net/mediawiki/index.php?title=Basic_corner_cases&amp;diff=288&amp;oldid=prev"/>
		<updated>2021-07-05T19:21:34Z</updated>

		<summary type="html">&lt;p&gt;‎&lt;span dir=&quot;auto&quot;&gt;&lt;span class=&quot;autocomment&quot;&gt;The eight situations&lt;/span&gt;&lt;/span&gt;&lt;/p&gt;
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				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #222; text-align: center;&quot;&gt;← Older revision&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #222; text-align: center;&quot;&gt;Revision as of 19:21, 5 July 2021&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;
  &lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 3:&lt;/td&gt;
  &lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 3:&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
  &lt;td class=&quot;diff-marker&quot;&gt;&amp;#160;&lt;/td&gt;
  &lt;td style=&quot;background-color: #f8f9fa; color: #222; 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;=== The eight situations ===&lt;/div&gt;&lt;/td&gt;
  &lt;td class=&quot;diff-marker&quot;&gt;&amp;#160;&lt;/td&gt;
  &lt;td style=&quot;background-color: #f8f9fa; color: #222; 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;=== The eight situations ===&lt;/div&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
  &lt;td class=&quot;diff-marker&quot;&gt;&amp;#160;&lt;/td&gt;
  &lt;td style=&quot;background-color: #f8f9fa; color: #222; 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;/td&gt;
  &lt;td class=&quot;diff-marker&quot;&gt;&amp;#160;&lt;/td&gt;
  &lt;td style=&quot;background-color: #f8f9fa; color: #222; 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;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
  &lt;td class=&quot;diff-marker&quot;&gt;−&lt;/td&gt;
  &lt;td style=&quot;color: #222; 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;Corner cases of two different directions have four possible &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;configurations&lt;/del&gt;, and eight possible structures. Of these, four structures will form a functioning chain. If we consider chains starting from the middle of an L-shaped 3-petal group, the working structures are:&lt;/div&gt;&lt;/td&gt;
  &lt;td class=&quot;diff-marker&quot;&gt;+&lt;/td&gt;
  &lt;td style=&quot;color: #222; 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;Corner cases of two different directions have four possible &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;combinations of directions&lt;/ins&gt;, and eight possible structures. Of these, four structures will form a functioning chain. If we consider chains starting from the middle of an L-shaped 3-petal group, the working structures are:&lt;/div&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
  &lt;td class=&quot;diff-marker&quot;&gt;&amp;#160;&lt;/td&gt;
  &lt;td style=&quot;background-color: #f8f9fa; color: #222; 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;/td&gt;
  &lt;td class=&quot;diff-marker&quot;&gt;&amp;#160;&lt;/td&gt;
  &lt;td style=&quot;background-color: #f8f9fa; color: #222; 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;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
  &lt;td class=&quot;diff-marker&quot;&gt;&amp;#160;&lt;/td&gt;
  &lt;td style=&quot;background-color: #f8f9fa; color: #222; 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;{| class=&quot;wikitable&quot;&lt;/div&gt;&lt;/td&gt;
  &lt;td class=&quot;diff-marker&quot;&gt;&amp;#160;&lt;/td&gt;
  &lt;td style=&quot;background-color: #f8f9fa; color: #222; 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;{| class=&quot;wikitable&quot;&lt;/div&gt;&lt;/td&gt;
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&lt;/table&gt;</summary>
		<author><name>Zircean</name></author>
		
	</entry>
	<entry>
		<id>https://petalcrashers.net/mediawiki/index.php?title=Basic_corner_cases&amp;diff=287&amp;oldid=prev</id>
		<title>Zircean: Created page with &quot;The same-distance priority rules for which direction a petal will move when pushed from multiple sides lead to a set of eight '''basic corner cases''' that players should keep...&quot;</title>
		<link rel="alternate" type="text/html" href="https://petalcrashers.net/mediawiki/index.php?title=Basic_corner_cases&amp;diff=287&amp;oldid=prev"/>
		<updated>2021-07-05T19:20:49Z</updated>

		<summary type="html">&lt;p&gt;Created page with &amp;quot;The same-distance priority rules for which direction a petal will move when pushed from multiple sides lead to a set of eight &amp;#039;&amp;#039;&amp;#039;basic corner cases&amp;#039;&amp;#039;&amp;#039; that players should keep...&amp;quot;&lt;/p&gt;
&lt;p&gt;&lt;b&gt;New page&lt;/b&gt;&lt;/p&gt;&lt;div&gt;The same-distance priority rules for which direction a petal will move when pushed from multiple sides lead to a set of eight '''basic corner cases''' that players should keep in mind when evaluating whether or not a link will work correctly. Because the corner cases resolve by giving priority to right, then up/down, then left, he rule of thumb is that chains will work more often when they are going to the right, and less often when they are going to the left. The priority order does not apply if the two bursting petals are different distances from the petals which caused their groups to burst to begin with.&lt;br /&gt;
&lt;br /&gt;
=== The eight situations ===&lt;br /&gt;
&lt;br /&gt;
Corner cases of two different directions have four possible configurations, and eight possible structures. Of these, four structures will form a functioning chain. If we consider chains starting from the middle of an L-shaped 3-petal group, the working structures are:&lt;br /&gt;
&lt;br /&gt;
{| class=&amp;quot;wikitable&amp;quot;&lt;br /&gt;
! Right/up !! Right/down !! Up/left !! Down/left&lt;br /&gt;
|-&lt;br /&gt;
| &amp;lt;petalboard width=&amp;quot;5&amp;quot; height=&amp;quot;5&amp;quot; size=&amp;quot;small&amp;quot;&amp;gt;,,,,;,,,,;,r,b,b,;,r,r,,;,,,,&amp;lt;/petalboard&amp;gt;&lt;br /&gt;
| &amp;lt;petalboard width=&amp;quot;5&amp;quot; height=&amp;quot;5&amp;quot; size=&amp;quot;small&amp;quot;&amp;gt;,,,,;,y,y,,;,y,g,g,;,,,,;,,,,&amp;lt;/petalboard&amp;gt;&lt;br /&gt;
| &amp;lt;petalboard width=&amp;quot;5&amp;quot; height=&amp;quot;5&amp;quot; size=&amp;quot;small&amp;quot;&amp;gt;,,,,;,,p,,;,,p,r,;,,r,r,;,,,,&amp;lt;/petalboard&amp;gt;&lt;br /&gt;
| &amp;lt;petalboard width=&amp;quot;5&amp;quot; height=&amp;quot;5&amp;quot; size=&amp;quot;small&amp;quot;&amp;gt;,,,,;,,b,b,;,,y,b,;,,y,,;,,,,&amp;lt;/petalboard&amp;gt;&lt;br /&gt;
|}&lt;br /&gt;
&lt;br /&gt;
And the non-working structures are:&lt;br /&gt;
&lt;br /&gt;
{| class=&amp;quot;wikitable&amp;quot;&lt;br /&gt;
! Up/right !! Down/right !! Left/up !! Left/down&lt;br /&gt;
|-&lt;br /&gt;
| &amp;lt;petalboard width=&amp;quot;5&amp;quot; height=&amp;quot;5&amp;quot; size=&amp;quot;small&amp;quot;&amp;gt;,,,,;,,b,,;,r,b,,;,r,r,,;,,,,&amp;lt;/petalboard&amp;gt;&lt;br /&gt;
| &amp;lt;petalboard width=&amp;quot;5&amp;quot; height=&amp;quot;5&amp;quot; size=&amp;quot;small&amp;quot;&amp;gt;,,,,;,y,y,,;,y,g,,;,,g,,;,,,,&amp;lt;/petalboard&amp;gt;&lt;br /&gt;
| &amp;lt;petalboard width=&amp;quot;5&amp;quot; height=&amp;quot;5&amp;quot; size=&amp;quot;small&amp;quot;&amp;gt;,,,,;,,,,;,p,p,r,;,,r,r,;,,,,&amp;lt;/petalboard&amp;gt;&lt;br /&gt;
| &amp;lt;petalboard width=&amp;quot;5&amp;quot; height=&amp;quot;5&amp;quot; size=&amp;quot;small&amp;quot;&amp;gt;,,,,;,,b,b,;,y,y,b,;,,,,;,,,,&amp;lt;/petalboard&amp;gt;&lt;br /&gt;
|}&lt;/div&gt;</summary>
		<author><name>Zircean</name></author>
		
	</entry>
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