Author: Peter McKenzie
Date: 02:49:01 09/08/02
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On September 08, 2002 at 05:36:13, Gerd Isenberg wrote: >On September 07, 2002 at 19:46:49, Peter McKenzie wrote: > >>I've been having a break from computer chess post WCCC, but have now started >>going over some of Warp's games. First up is Warp's worst game, the loss vs >>Brutus. In this game, Warp showed a total lack of understanding of its >>centralised king in the early middlegame and lost without a fight. >> >>I present here the position after move 21 in the game. White has grabbed a pawn >>thinking this position is OK, but in reality the white king is hopelessly stuck >>in the centre. Also, white is passive, black is active and has a safe king, >>therefore white is totally winning here: >> >>[D]r1r3k1/1p3ppp/b5q1/p7/4n3/P3PNB1/1P3PPP/1Q1RK2R b K - 0 1 >> >>I am curious what the static evaluation of various programs is here. The >>version of warp used in Maastricht gives 0.238 in favour of white. Ideally the >>static evaluation should favour black here I think. >> >>cheers, >>Peter > >IsiChess favours black here by 0.67 pawns. > >The term is dominated by king safety. But also the e4-knight has a nice score >and the black queen is more active than the white (0.13 versus -0.13). > >The white king becomes a penalty of -1.24 here. > >As far as i remember i do consider following things: > >Four adjacent king squares are controlled by black (three free squares). >White King has no move. >There are two black pieces controlling adjacent king squares. >There are four black pieces controlling squares with distance two from king. >Square f1 is attacked and therefore castle is not possible. >No way to move pawns or light pieces to the a6-f1 diagonal... >and in this context the lack of white kings bishop. >There are open and/or halfopen files adjacent to the king. >File distance between the kings is greater one. >And as a kind of factor the number of black pieces (specially rooks and queen). Thanks Gerd, thats very impressive! > >Regards, >Gerd
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