Author: Gerd Isenberg
Date: 12:05:33 02/20/04
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On February 20, 2004 at 11:50:30, Tord Romstad wrote: >In a blitz game between Gothmog and Phalanx, played earlier today, the following >position was reached: > >[D]3rr2k/pp3q1p/2p2pp1/8/2PP4/3B1Q2/PBN2PPP/6K1 w - - > >Without doing a search, Gothmog thinks white has a winning advantage. The >static eval returns a score of +2.0, despite approximate material equality. >The big plus score for white seems to be almost entirely because of the >bishop pair (my bishop pair bonus is really big when the opposite side >has no minor pieces) and the weakness of black's a1-h8 diagonal. > >To this patzer's eyes, an advantage of +2 in this position seems to be >way too much. Should I have a closer look at my bishop pair bonus, or is >Gothmog's assesment of the position really OK? > >Tord IsiChess likes the bishop pair and their adjacent attacking diagonals too, together with the mobile duo pawn and candidate on d4. Blacks kingsafety is slightly worse, due to f6 is not longer supported by own pawn. On the other hand i have a bonus for two rooks agains three minor pieces in this late middlegame or endgame phase. There is also a slight white penalty for a "weak" back rank (no rook, no air hole). The score is +0.7 for white, a bit too low, but +2 is may be a bit too much, even if it may fit here. May be i should consider bishop attacks "through" one mobile pawn/piece a bit more, specially on "long" attacking diagonals. An additional bonus attacking a weak (pawn shield) pawn or in general squares with distance <= 2 from opposite king, and not defended/defendable by opposite pawns... Gerd
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