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Subject: To SB - Senator and draws by threefold repetition

Author: Jaco van Tonder

Date: 00:38:18 01/08/06


Welcome back Steve

I've been playing my senator module against various other computers to get a
feel for the playing style of the engine, and I noticed something funny - the
senator would allow a draw by threefold repetition in positions where it is
clearly ahead (own evaluation of position at least 2 pawns better). Yet it would
allow the other engine the draw.

The first time it happened was against my Mephisto Chess Challenger. I made sure
after that to press the ACL button before any comp vs comp games to reset any
funny settings. But yesterday the exact same thing happened when I played it
against CSTAl 2 on reduced strength (setting on 15).  The position was in the
endgame with both sides having a rook, but the senator being up a knight for a
pawn. The position was fairly open (senator was definitely in control of the
position - so no chance of an incorrect assessment of a drawn endgame position)

Do you know whether this is a known bug in the senator module?

Regards,
Jaco



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