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Subject: Re: analyzing the position a bit before commenting

Author: Gordon Rattray

Date: 20:31:24 02/05/01

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On February 05, 2001 at 18:05:53, Vincent Diepeveen wrote:

>On February 05, 2001 at 13:01:41, Arturo Ochoa wrote:
>
>>On February 05, 2001 at 12:59:27, Thomas Lagershausen wrote:
>>
>>>The following position is first published in 1993 by an forgotten austrian
>>>computerchessmagazine called "modul" and later "pc schach".
>>>I am shure it´s to difficult for any current chessprograme, but let´s have a
>>>look.The white position is won, but the way to show this is to play Re6!.
>>>Which programe have a positive score by showing Re6! on his screen?
>>>CM 8000 shows nothing after an overnight analysis.Shredder 5 and Yace 0.99 only
>>>kingmoves.I know one programe that will play Re6! but the evaluation is negative
>>>and the variation looks like an loosingline.But it´s interesting to see this by
>>>an very famous programe.I would say a programe that wins against best defence
>>>this position is a grandmaster.
>>>
>>>[Event "3/93-63 MR-Test2 17 "]
>>>[Site "?"]
>>>[Date "1792.??.??"]
>>>[Round "?"]
>>>[White "Makagonov "]
>>>[Black " Kasparjan"]
>>>[Result "1-0"]
>>>[SetUp "1"]
>>>[FEN "2bq1b2/1p3k2/1r1p1p1p/pNpP1PpP/P1P3P1/6B1/7Q/2K1R3 w - -"]
>>>
>>
>>[D]2bq1b2/1p3k2/1r1p1p1p/pNpP1PpP/P1P3P1/6B1/7Q/2K1R3 w - -
>
>Hello What do you do after
>
>1.Re6 Bxe6
>2.Bxe6 Kg8
>3.Qc2 Qe7
>4.Be1 Ra6
>5.Bc3 Bg7
>
>I mean all other lines are a peanut to see here, but
>this is a line where i get about draw score as both sides
>can't do shit according to diep. and i catually don't see really
>an easy win plan for white here. When i played it with white
>i actually managed to lose it because DIEP managed Ra8-f8 and in
>between b6 covering all problems.


I believe that White has a winning position on move 5 of your given line. ( I
assume that White's second move is fxe6+).

However, White doesn't play 5) Bc3 but plays 5) Qg6+    [I didn't look at 5) Bc3
much so I can't comment on it.]

5) Qg6+  ..
A) 	5) ..  Qg7
	6) Qe8 Qe7
	7) Qc8 Rb6      [ 7) ..  f5  8) gf  Qf6  9) Bc3  Qxf5  10) Qe8 +-]
	8) Bc3 +-

B)	5) ..   Bg7
	6) Kc2  Ra8	[ 6) ..  Kh8  7) Nc7 +-]
	7) Bg3  Ra6
	8) Bxd6 +-

Gordon


>
>3..Qe7 as played below is directly giving a good score for white here.
>
>>>1. Re6 Bxe6 2. fxe6+ Ke8 (2... Kg8 3. Qc2 Qe8 4. Be1 Qe7
>>>5. Bc3 Qg7 6. Qf5 Be7 7. Na7 Rb3 (7... Qf8 8. Nc8 Qxc8
>>>9. Qg6+ Kh8 10. Bxf6+ Bxf6 11. Qxf6+ Kh7 12. Qg6+ Kh8
>>>13. e7 Rb4 14. e8=Q+) 8. Kc2 Ra3 9. Nc8 Kf8 10. Qg6 Qxg6+
>>>11. hxg6 Bd8 12. Nxd6 Rxa4 13. Nxb7 Bb6 14. Bxf6 Rxc4+
>>>15. Kd3 (15. Kd3 Rxg4 16. e7+ Ke8 17. Nd6+ Kd7 18. e8=Q+
>>>Kxd6 19. Qc6#)) 3. Qc2 f5 4. Qxf5 Qe7 5. Qg6+ Kd8 6. Be1 with the threads Ba5:
>>>and Bc3 1-0
>>>
>>>Thomas Lagershausen



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