Author: Gerd Isenberg
Date: 10:32:17 11/06/03
Go up one level in this thread
On November 06, 2003 at 11:47:59, Uri Blass wrote: >On November 06, 2003 at 11:04:03, Stefan Knappe wrote: > >>Hi José, >> >>> This position is easy, but interesting: >>> >>> r2qk2r/pp3ppp/2pbpn2/4Nb2/PnBP2P1/2N1P3/1P3P1P/R1BQ1RK1 b kq g3 0 1 >> >>6/16 0.34 -11 31381 f5c2 d1f3 e8g8 b2b3 b4d5 c1b2 >>6/16 0.42 -9 44038 f6g4 e5g4 d8h4 b2b3 b4d5 <c1b2> >>7/21 0.86 12 109589 f6g4 e5g4 d8h4 g4e5 d6e5 d4e5 <h4c4> <d1d6> >>8/22 2.11 62 298652 f6g4 e5g4 d8h4 g4e5 d6e5 d4e5 h4c4 <d1d6> <c4g4> <g1h1> >><b4d5> >>9/27 6.47 46 1017372 f6g4 e5g4 d8h4 h2h3 h7h5 c4e2 h5g4 e3e4 f5g6 g1h1 b4d5 >>10/31 22.09 96 3418183 f6g4 e5g4 d8h4 h2h3 h7h5 c4e2 h5g4 e3e4 f5g6 g1h1 <b4d5> >>11/37 1:12 110 10900548 f6g4 e5g4 d8h4 f2f3 f5g4 d1d2 g4h3 c3e4 d6e7 g1h1 >> >>Matador finds Nxg4 at ply 6. In QSearch I only do SEE, good captures, some >>promotions and stand-pat with eval >= beta. >> >>Regards, >>Stefan > >Maybe it is because of evaluation. > >If you have a big score for bishop at h3 when there is no pawn at g2 >it may cause you to find it fast. > >You need to calculate lines like >Nxg4 Nxg4 Qh4 h3 h5 Nh2 Bh3 and if you have no special extensions for them >you cannot see it in 6 plies. Bxh3 is a winning capture. I guess it's not (only?) a big score for h3-bishop, but huge penalty for the naked white king, where 4 of 5 sorrounding king squares are attacked by three black pieces including queen, two squares only defended by king. Gerd > >Uri
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