File: HashLife.html

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<html>
<title>Golly Help: HashLife</title>
<body bgcolor="#FFFFCE">

<p>
HashLife uses Bill Gosper's
<a href="http://en.wikipedia.org/wiki/Hashlife">hashlife</a>
algorithm to achieve remarkable speeds when generating patterns
that have a lot of regularity in time and/or space.

<p>
HashLife supports the same set of rules as
<a href="QuickLife.html">QuickLife</a>, but with one exception:
if a rule contains B0 it must also contain S8
(or S6 if the rule ends with H, or S4 if it ends with V).

<p>
Note that HashLife performs very poorly on highly chaotic patterns,
so in those cases you are better off switching to QuickLife.

</body>
</html>