Author: martin fierz
Date: 07:54:30 05/30/01
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On May 29, 2001 at 14:21:13, Peter Fendrich wrote: >This position appeared in an ICC game: Guitje - TerraPi > >[D]2r3kb/5q1p/4pPp1/1p1pP3/p2P2Q1/PrP5/1P3R1R/2B3K1 w - - 0 42 > >the last move from Terra was 41... b5 >Some moves earlier when white made g6, Terra decided to move the bishop from g7 >to h8. >Both Rb3 and Bh8 are locked in and Terra is absolutely unaware of the >hopeless situation. Yes, Terra lost... > >I see two different but connected problems for computer programs here: > - the closed position itself > - the two blocked pieces. > >How do you solve/avoid positions like this? Terra has about equal eval for this >position. >It is of course possible to punish pawn chains like this in order to avoid >closed positions but is that really a solution and how to deal with blocked >positions? i wouldnt see what punishing pawn chains helps here. it seems to me that with the bishop on f8 instead of h8 and the rook on c4 instead of b3, black would be ok. so it's not really the pawn chain which is the problem. of course you should recognize that the black king is not better off than the white king with the pawn on f6. and that these two pieces are trapped. this is probably too expensive, but if you just look if your pieces can still move away from where they are without being taken by a pawn, then you would see this. cheers martin
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