About derivatives

[Olivier Deville]

Hi all

When ChessWar XVI cycle ended in May, I took a 2 months break.

On the light of recent events, I asked myself whether spending time on computer chess was still worth the effort.

I finally started the Promo division of ChessWar XVII in July, and I found out I still care for computer chess. I am glad I did not give up, and I'm getting very good feedback from the participants of the Promo.

I have deleted several engines from the top division (Rybka was the first to fall). I don't want any derivative from strong open source engines anymore. Some cases are clear cut, but some other ones seem to belong to a grey area.

For instance, I'm wondering what to do of Bison. I only have this statement from Dann Corbit : viewtopic.php?f=2&t=50838&p=193088&hilit=Bison+Fruit#p193088

Any opinion?

Olivier