Author: Kolss
Date: 12:55:31 01/05/00
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On January 05, 2000 at 14:18:48, José de Jesús García Ruvalcaba wrote: >Many years ago I composed the following study: >8/8/3k3P/b4K2/8/8/8/5N2 w - - 0 1 > According to my analysis, it is a win for white. My main line was 1. Ne3 Ke7 2. >Kg6 Kf8 3. Nd5 Kg8 4. h7+ Kh8 5. Ne7 and mate in three more moves (this last >move was the motiv I was trying to exploit, it is the longest forced mate with >this material, the black bishop on dark squares the white king in g6, the white >pawn in h7 and the black king in h8). Unfortunately, 4. Nf6+ Kh8 5. Ne4 is also >a win for white, for this reason I did not submit this position for publication. > I do not remember exactly why other first moves do not win, and how does white >win after 1... Bc3. Could somebody with tablebases please confirm the following? >-It is a win for white. Tablebases say it is +M21. >-The only winning move is 1. Ne3 Yes, that is true, which means that your study was correct, as far as the key move is concerned. >-The main line I posted is correct. However, the best defence is not 1... Ke7, after which 2. Kg6 is +M16 (... Ke6 [Kf8? 3. Nd5 +M12] 3. Nf5 and 4. Ng7). The main line is as follows: 1. Ne3 Bc3 2. Kg6 Kd7 3. Nd5 Bd4 4. Kf7 Bh8 5. Nf6+ Kd6 6. Nh5 Kd5 7. Ng7 Ke5 8. Kg8 Kf6 9. Kxh8 1-0 > Thanks in advance. You are welcome! Best regards, Munjong.
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