LMR & TT interaction

Discussion of chess software programming and technical issues.

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hgm
Posts: 27797
Joined: Fri Mar 10, 2006 10:06 am
Location: Amsterdam
Full name: H G Muller

Re: LMR & TT interaction

Post by hgm »

+7 for for Kg7 after 3.Rxh6+ seems an idiotic score. After 3.Bxh6 it sees a quiet move and a Rook trade, and it scores it as +4. Which seems reasonable, a it has two Rooks vs Bishop + 3 Pawns.

How can it get +7 on the check evasion at 1 ply, which leaves the same material? Do you extend that evasion? (And if so, why isn't there a second move in the PV? If you started that analysis from scratch, there should not have been any hash hits in a 1-ply search.)
xmas79
Posts: 286
Joined: Mon Jun 03, 2013 7:05 pm
Location: Italy

Re: LMR & TT interaction

Post by xmas79 »

Seems a bug in king safety code....