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1<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN"
2"http://www.w3.org/TR/html4/strict.dtd">
3<html>
4<head>
5<meta http-equiv="content-type" content="text/html; charset=US-ASCII">
6<title>Untangle</title>
7<link rel="previous" href="dominosa.html">
8<link rel="ToC" href="index.html">
9<link rel="up" href="index.html">
10<link rel="index" href="docindex.html">
11<link rel="next" href="blackbox.html">
12</head>
13<body>
14<p><a href="dominosa.html">Previous</a> | <a href="index.html">Contents</a> | <a href="docindex.html">Index</a> | <a href="blackbox.html">Next</a></p>
15<h1><a name="C18"></a>Chapter 18: <a name="i0"></a>Untangle</h1>
16<p>
17You are given a number of points, some of which have lines drawn between them. You can move the points about arbitrarily; your aim is to position the points so that no line crosses another.
18</p>
19<p>
20I originally saw this in the form of a Flash game called <a name="i1"></a>Planarity <a href="#p0">[7]</a>, written by John Tantalo.
21</p>
22<p><a name="p0"></a>
23[7] <a href="http://planarity.net"><code>http://planarity.net</code></a>
24</p>
25<h2><a name="S18.1"></a>18.1 <a name="i2"></a>Untangle controls</h2>
26<p>
27To move a point, click on it with the left mouse button and drag it into a new position.
28</p>
29<p>
30(All the actions described in <a href="common.html#S2.1">section 2.1</a> are also available.)
31</p>
32<h2><a name="S18.2"></a>18.2 <a name="i3"></a>Untangle parameters</h2>
33<p>
34There is only one parameter available from the &#8216;Custom...&#8217; option on the &#8216;Type&#8217; menu:
35</p>
36<dl><dt>
37<em>Number of points</em>
38</dt>
39<dd>
40Controls the size of the puzzle, by specifying the number of points in the generated graph.
41</dd>
42</dl>
43
44<hr><address></address></body>
45</html>