<?xml version="1.0" encoding="UTF-8"?>
<rss version="2.0">
	<channel>
		<title><![CDATA[Latest posts for the topic "Sudoku solutions should be unique"]]></title>
		<link>http://www.genina.com/posts/list/1.page</link>
		<description><![CDATA[Latest messages posted in the topic "Sudoku solutions should be unique"]]></description>
		<generator>Forum at http://www.genina.com</generator>
			<item>
				<title>Sudoku solutions should be unique</title>
				<description><![CDATA[ A following grid has 2 solutions (swap the 5's and 2's) and therefore is not a valid one.<br /> <br /> ...5.2...  <br /> .........  <br /> .........  <br /> ...2.5...  <br /> .........  <br /> .........  <br /> .........  <br /> .........  <br /> .........  <br /> <br /> These types of grid  appear frequently in genina sudokus.<br /> <br /> When I find the following combination, I exclude 5 from the possibilities at the case marked "?"<br /> <br /> ...5.2...  <br /> .........  <br /> .........  <br /> ...2.?...  <br /> .........  <br /> .........  <br /> .........  <br /> .........  <br /> .........  <br /> <br /> As a result, I end-up with unsolvable sudokus. Could these invalid grids be excluded ?<br /> ]]></description>
				<guid isPermaLink="true">http://www.genina.com/posts/preList/460/1503.page</guid>
				<link>http://www.genina.com/posts/preList/460/1503.page</link>
				<pubDate><![CDATA[Thu, 16 Mar 2017 14:43:37]]> GMT</pubDate>
				<author><![CDATA[ boutoukoat]]></author>
			</item>
			<item>
				<title>Sudoku solutions should be unique</title>
				<description><![CDATA[ you cannot exclude 5 only because it may be in a different cell. a correct solution is probably 2 up and 5 down. so, your approach cannot work and the sudoku may be solvable. ]]></description>
				<guid isPermaLink="true">http://www.genina.com/posts/preList/460/1510.page</guid>
				<link>http://www.genina.com/posts/preList/460/1510.page</link>
				<pubDate><![CDATA[Wed, 29 Mar 2017 04:56:38]]> GMT</pubDate>
				<author><![CDATA[ mxv]]></author>
			</item>
			<item>
				<title>Re:Sudoku solutions should be unique</title>
				<description><![CDATA[ These puzzles all have unique solutions. If you come to a final point like this then you made an error elsewhere in the puzzle... look for it (it's there) and undo until it's undone, then re-work the puzzle.]]></description>
				<guid isPermaLink="true">http://www.genina.com/posts/preList/460/1512.page</guid>
				<link>http://www.genina.com/posts/preList/460/1512.page</link>
				<pubDate><![CDATA[Fri, 31 Mar 2017 00:27:51]]> GMT</pubDate>
				<author><![CDATA[ jco1986]]></author>
			</item>
			<item>
				<title>Re:Sudoku solutions should be unique</title>
				<description><![CDATA[ This puzzle has a single solution. I've just solved it by pencil, in the order listed below. Compare to find your error. <br /> <br /> 761 429 358<br /> 249 385 176<br /> 358 761 294<br /> <br /> 473 812 965<br /> 682 594 713<br /> 195 637 842<br /> <br /> 916 253 487<br /> 524 178 639<br /> 837 946 521]]></description>
				<guid isPermaLink="true">http://www.genina.com/posts/preList/460/1514.page</guid>
				<link>http://www.genina.com/posts/preList/460/1514.page</link>
				<pubDate><![CDATA[Sat, 1 Apr 2017 19:23:05]]> GMT</pubDate>
				<author><![CDATA[ jco1986]]></author>
			</item>
			<item>
				<title>Re:Sudoku solutions should be unique</title>
				<description><![CDATA[ As I said before, you've made an error elsewhere. Go back and find your error before continuing to solve the puzzle incorrectly]]></description>
				<guid isPermaLink="true">http://www.genina.com/posts/preList/460/1515.page</guid>
				<link>http://www.genina.com/posts/preList/460/1515.page</link>
				<pubDate><![CDATA[Sat, 1 Apr 2017 19:26:17]]> GMT</pubDate>
				<author><![CDATA[ jco1986]]></author>
			</item>
			<item>
				<title>Re:Sudoku solutions should be unique</title>
				<description><![CDATA[ So I see what your question is.... but both instances you're questioning (the 7/4 and 9/1) are part of the given values. Thus, they're not interchangeable. Thus, there's only one, unique solution. It's not valid to interchange initial conditions.<br /> <br /> You didn't make an error, you simply interpreted the initial conditions and solution incorrectly ]]></description>
				<guid isPermaLink="true">http://www.genina.com/posts/preList/460/1516.page</guid>
				<link>http://www.genina.com/posts/preList/460/1516.page</link>
				<pubDate><![CDATA[Sat, 1 Apr 2017 21:15:02]]> GMT</pubDate>
				<author><![CDATA[ jco1986]]></author>
			</item>
	</channel>
</rss>