Author: Ferdinand S. Mosca
Date: 06:35:51 12/12/00
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On December 11, 2000 at 20:38:26, Dieter Buerssner wrote: >Sorry for the second followup on this post. > >There are two positions, that neither I nor my chessengine understand. >Would you (or anybody else) mind to show me the idea behind these postions? > >The first one is > >[D] 1k6/p1pr3r/Qpn1p2p/3nPpp1/P1NP4/1qP5/3B1PPP/2R1RK2 b - - > >The target was to find Nd8. Yace has very close scores for Nd8 and Rd8. >Can you show to a chess Patzer, why Nd8 is clearly better? > >My second problem position is > >[D] r2n3r/pb1qn1kB/1p2p1p1/3pP1N1/P1pP2P1/2P4R/1QPB1PK1/R7 w - - > >Target was to find either Qc1 or Qb1. After 10 minutes, Yace still prefers Qb4 >(and the score is very similar - about +1 pawn - to the score after Qc1 or Qb1). >Can you please explain, why the target moves are clearly better? > >With best regards, >Dieter In position 1, Nd8 is quite logical for the following reasons: 1. The c6 square is a hole not an outpost for a knight. 2. From d8, the knight covers up the weak b7 and e6 squares. There might be a possibility also to play Nb7, which indirectly protects the dangerous the half-open b-file, white might be able to gain time attacking this half-open file due to black's weak queen position. 3. White is capable of opening the a-file, when black has the resource to play c6 now, protecting the a7 pawn by 2, 7th-rank rooks. 4. Black now has the ability to trap the White queen, by playing c6 then Nc7!! 5. In the long run the strong knight at d5 might be dislodge by white's c4 move then the knight should best retreat to c7 that is after playing c7-c6. 5. The alternative move Rd8 is not helping a lot, there may not be threats along the back rank
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