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Subject: Re: Revised ECM Test Suite (some additional analysis needed)

Author: Vincent Lejeune

Date: 01:20:41 07/22/04

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On July 19, 2004 at 13:43:30, martin fierz wrote:

>On July 19, 2004 at 12:10:49, Omid David Tabibi wrote:
>
>>>>2bq1b2/1p3k2/1r1p1p1p/pNpP1PpP/P1P3P1/6B1/1P5Q/2K1R3 w - - bm Re6; id "ECM.396";
>>>
>>>this looks like a very correct exchange sac which takes a long time to see, but
>>>after Re6 Bxe6 fxe6+ i see no proper defense for black for the various white
>>>threats (invasion of the Q to g6, grabbing a pawn (a5 or d6 or f6)). what kind
>>>of defense do you suggest after Re6?
>>
>>After fxe6+ simply go Kg8. White has several threats, but black manages to
>>defend against them. Any winning line for white after Kg8?
>
>like dan said, 3.Qc2 should win - there is no concrete line i would quote, but
>white is simply winning due to the many weaknesses in the black camp (a5/d6/f6),
>the rook is worth nothing. the engines will show positive scores for white after
>Qc2 quickly.
>


I analyzed with the help of shredder 8 and hiarcs 9

[Event "?"]
[Site "?"]
[Date "????.??.??"]
[Round "?"]
[White "Nouvelle partie"]
[Black "?"]
[Result "*"]
[SetUp "1"]
[FEN "2bq1b2/1p3k2/1r1p1p1p/pNpP1PpP/P1P3P1/6B1/1P5Q/2K1R3 w - - 0 1"]
[PlyCount "31"]

1. Re6 Bxe6 2. fxe6+ Kg8 3. Qc2 Qe7 4. Be1 Ra6 5. Bc3 Bg7 6. Qg6 Ra8 7. Na3 Qe8
8. Qxe8+ Rxe8 9. Nb5 Bf8 10. Bxf6 b6 11. Nc3 Rb8 12. Ne4 Rb7 13. Ng3 Be7 14.
Bxe7 Rxe7 15. Nf5 Rh7 16. Nxd6 *

+4 here !



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