> Some experiments showed that it was not uncommon to have a long unlucky
> streak of random choices and end up with poor results, so I tried also
> stepping in the opposite direction, and this seemed to give a
> considerable improvement.

Perhaps, if stepping in a certain direction is successful (it reduces the
radius), you should make the next step in the same direction.

 - Slime
[ http://www.slimeland.com/ ]

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