[r-t] Exhausted search spaces

[Richard Smith]

Ian Broster wrote:

> So, on average that's 480,000 per minute, which you might 
> just map to 2.8 million in 6 minutes.
>
> As you say, it's hard to estimate the progress because of 
> the tree pruning.
>
> There is nothing notable in my implementation, it's merely 
> searching for trees. It's single threaded, written in C, 
> with little thought on optimization.

In that case, I've probably done something silly in my 
implementation.  Let me take a look ...

RAS