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Subject: Re: How many Amateur programs can win with white ?

Author: Uri Blass

Date: 00:45:48 03/11/04

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On March 10, 2004 at 20:19:36, Anthony Cozzie wrote:

>[D]8/8/4p3/5p1k/5P1P/6P1/2r5/4RK2 w - - 0 51
>
>Zappa plays Re2 but thinks white has only a very moderate edge.
>
>1. Re1-e2 Rc2-c3 2. Kf1-f2 Kh5-g4 3. Re2-e3 Rc3-c2 4. Kf2-f1 Rc2-d2 5. Kf1-e1
>Rd2-h2 6. Re3-d3 Rh2-g2 7. Rd3-c3 Rg2-a2 8. Ke1-f1
> = (0.76)	Depth: 14/24	00:00:40.25	10590kN
>
>After Movei's Rxe6 it looks like black has an easy draw with Rc3 (Kf2 Rf3!):
>
>1... Rc2-c3 2. Re6-e8 Rc3xg3 3. Re8-h8 Kh5-g4 4. h4-h5 Rg3-f3 5. Kf1-e2 Rf3xf4
>6. Ke2-e3 Rf4-a4 7. h5-h6 f5-f4 8. Ke3-d3 Ra4-a3 9. Kd3-e4 Ra3-e3 10. Ke4-d4
>Kg4-f5
> = (-0.35)	Depth: 14/25	00:00:26.73	8586617kN
>
>I can't say I understand GreKo's Kg4.
>
>anthony

I guess that zappa used tablebases.

Movei also plays Rc3 but does not evaluate correctly the KRP vs KR endgame
in the line 1...Rc3 2.Rf6 Rxg3 3.Rxf5 Kxh4 4.Kf2

The black king is at distance of 2 files from the pawn and it gives white some
positional bonus that also does not help.

Uri



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