[Computer-go] Semeais

[Olivier Teytaud]

2) discard simulations
> - spot semeais
> - solve them with a dedicated solver
> - discard simulations which propose a result which is not consistent with
> the dedicated solver
>
>
As when I've tested that I was almost sure it would work, I'd like to
explain why it does not :-)

Let's consider that a white group A is clearly alive. The semeai is
detected, the solver sees that
The white group A should not die. What happens ?

When we discard simulations which kill white group A (which should be
alive), then ok, simulations look better. However, they're better, but they
introduce a bias: white will play possible 10 moves for protecting group A,
whereas 3 stones are enough.

Understanding this took me a lot of time, but it's a clear explanation of
the result...
Olivier
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