Surprise 4.2.3

[Sven Schüle]

Hi all,

I have released Surprise-4.2.3 today. Changes against 4.2.3 include:

- Hash key bugfixes concerning ep and castling! (but this did not help much ...)
- Skip some losing captures in qsearch now (still not using SEE)
- Slightly improved move ordering
- Avoid move generation on hash move cutoff now
- Added "pawn to 7th rank" extension at horizon nodes
- Book loading speedup (legality checking of book moves was too slow)
- A couple of internal code improvements

Despite this long list, 4.2.3 is not a major new release, and you should not expect too much. Nevertheless I hope that 4.2.3 is at least a very little bit stronger than 4.2.2.

Have fun with it!

Sven

[Claude Dubois]

Hello Sven,

thanks for your good surprises

Best wishes

Claude