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<head>
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<title>Palisade</title>
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<p><a href="tracks.html">Previous</a> | <a href="index.html">Contents</a> | <a href="docindex.html">Index</a> | <a href="licence.html">Next</a></p>
<h1><a name="C41"></a>Chapter 41: <a name="i0"></a>Palisade</h1>
<p>
You're given a grid of squares, some of which contain numbers. Your goal is to subdivide the grid into contiguous regions, all of the same (given) size, such that each square containing a number is adjacent to exactly that many edges (including those between the inside and the outside of the grid).
</p>
<p>
Credit for this puzzle goes to <a name="i1"></a>Nikoli, who call it ‘Five Cells’. <a href="#p0">[22]</a>.
</p>
<p>
Palisade was contributed to this collection by Jonas Kölker.
</p>
<p><a name="p0"></a>
[22] <a href="http://nikoli.co.jp/en/puzzles/five_cells.html"><code>http://nikoli.co.jp/en/puzzles/five_cells.html</code></a>
</p>
<h2><a name="S41.1"></a>41.1 <a name="i2"></a>Palisade controls</h2>
<p>
Left-click to place an edge. Right-click to indicate ‘no edge’. Alternatively, the arrow keys will move a keyboard cursor. Holding Control while pressing an arrow key will place an edge. Press Shift-arrowkey to switch off an edge. Repeat an action to perform its inverse.
</p>
<p>
(All the actions described in <a href="common.html#S2.1">section 2.1</a> are also available.)
</p>
<h2><a name="S41.2"></a>41.2 <a name="i3"></a>Palisade parameters</h2>
<p>
These parameters are available from the ‘Custom...’ option on the ‘Type’ menu.
</p>
<dl><dt>
<em>Width</em>, <em>Height</em>
</dt>
<dd>
Size of grid in squares.
</dd>
<dt>
<em>Region size</em>
</dt>
<dd>
The size of the regions into which the grid must be subdivided.
</dd>
</dl>
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