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	<title>Dr Gareth Moore &#187; Gap</title>
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		<title>Jigsaw Gap Samurai</title>
		<link>http://www.garethmoore.co.uk/2009/04/jigsaw-gap-samurai/</link>
		<comments>http://www.garethmoore.co.uk/2009/04/jigsaw-gap-samurai/#comments</comments>
		<pubDate>Sat, 11 Apr 2009 23:13:20 +0000</pubDate>
		<dc:creator>Gareth Moore</dc:creator>
				<category><![CDATA[Gap Sudoku]]></category>
		<category><![CDATA[Jigsaw Samurai]]></category>
		<category><![CDATA[Jigsaw Sudoku]]></category>
		<category><![CDATA[Samurai]]></category>
		<category><![CDATA[Samurai Variants]]></category>
		<category><![CDATA[Sudoku]]></category>
		<category><![CDATA[Gap]]></category>
		<category><![CDATA[Jigsaw]]></category>

		<guid isPermaLink="false">http://www.garethmoore.co.uk/?p=155</guid>
		<description><![CDATA[Jigsaw Gap Samurai
This is an interesting puzzle!  It&#8217;s similar to yesterday&#8217;s Gap Samurai puzzles, except that the 3&#215;3 box regions have been replaced by jigsaw regions &#8211; and not only that, but also some of these regions stretch across the empty areas of the puzzle.
The rules are:

Wherever you see a continuous row or column of  <a href="http://www.garethmoore.co.uk/2009/04/jigsaw-gap-samurai/" class="more-link">More &#62;</a>]]></description>
			<content:encoded><![CDATA[<p><span style="width: 150px; float: right; padding: 10px; border: solid 1px red; text-align: center; background-color: #ffffa0; margin: 5px"><a style="text-decoration: none; font-weight: bold" href="http://www.garethmoore.co.uk/wp-content/uploads/2009/04/samurai-9-grid-gap-jigsaw-puzzle.pdf"><img border=0 src="http://www.garethmoore.co.uk/wp-content/uploads/2009/04/samurai-9-grid-gap-jigsaw-puzzle.jpg"><br>Jigsaw Gap Samurai</a></span></p>
<p>This is an interesting puzzle!  It&#8217;s similar to yesterday&#8217;s Gap Samurai puzzles, except that the 3&#215;3 box regions have been replaced by jigsaw regions &#8211; and not only that<em>, </em>but also some of these regions s<em>tretch across the empty areas of the puzzle</em>.</p>
<p>The rules are:</p>
<ul>
<li>Wherever you see a continuous row or column of 9 squares from a bold line to a bold line then you must place 1 to 9.</li>
<li>Rows or columns that cross gaps have no restrictions (numbers can repeat on the other side of the gap).</li>
<li>Jigsaw regions must also have 1 to 9 in.  Those jigsaw regions <em>without</em> bold lines next to a gap continue on the other side of the gap, by following a direct line across the gap.  They do <em>not</em> flow around to the left or right, but only straight across.  (If you&#8217;re familiar with Toroidal Sudoku, the regions connect in a similar way, except without actually wrapping around the outside of the puzzle too).</li>
</ul>
<p>Confused?  It isn&#8217;t actually that complex in concept, but keeping track of all the regions when solving might require a clear head!  You might find it easier if you lightly colour in the different cross-gap regions in different colours in order to help keep track of them.  (Sorry I haven&#8217;t coloured the PDF &#8211; I eventually will for future puzzles!)</p>
<p>If you&#8217;re still confused, and to clarify the regions further, count 4 across and 2 squares down from the top-left of the puzzle.  This jigsaw region continues into the square below (obviously) and then <em>across</em> the gap to the square four below that (i.e. cross the gap whilst staying in the same column).  It does <em>not</em> continue around the corner into the square that is 3 across by 4 down from the top-left &#8211; that&#8217;s part of a different region that continues in the centre of the puzzle (where the &#8216;8&#8242; is, 8 across by 4 down).  Returning to the first region, it then continues down to the &#8216;3&#8242;, and the &#8216;9&#8242; and blank square to its right, and then down to the next square, across that second vertical gap, and then finishes in the two squares directly below (so that&#8217;s 4 across and 2/3 up from the bottom-left corner).</p>
<p>Phew! Good luck!</p>
<p>PS None of the Samurai puzzles I&#8217;m posting require complex solving logic &#8211; just an organised approach!  (So you don&#8217;t need to consider naked or hidden sets, or anything more complex, although of course they might occasionally help anyway &#8211; but you can solve these puzzles without them).</p>
<p>PPS If you want to see solutions for any puzzles, just post a comment and ask! Also if you&#8217;ve solved one, please let me know how long it took &#8211; I&#8217;m interested to know!</p>
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