simoniker from the my-mind-hurt-enough-solving-the-original dept.
roice writes "Rubik's junkies and puzzlers will be interested in this software rendered four-dimensional
analog of Rubik's Cube. With over 1.75E120 possible combinations, it's
a mind bender. Free versions are available for both Windows and Linux, and
they even publish their source code for download. Solving it will get your
name listed in their Hall
Of Fame, and there is also a running competition for the most efficient
solution. To help get you started, you can check out a solution algorithm based
on techniques used to solve the popular three-dimensional version."
If a 6600 used paper tape instead of core memory, it would use up tape
at about 30 miles/second.
-- Grishman, Assembly Language Programming