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Subject: Re: Amateur endgame position

Author: Robert Hyatt

Date: 20:09:53 01/07/00

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On January 07, 2000 at 20:09:21, Will Singleton wrote:

>
>In a recent ICC game (PostModernist - Amateur), black can easily win with Nxe3.
>My program wanted to play f2 (and did), leading to a draw.
>
>I wonder if there's a way to quickly figure out that getting rid of the knights
>is better here.
>
>[D] 8/6pp/4k3/8/P1PKp2P/4Np2/6n1/8 b - -
>
>
>Amateur on a G3/300:
>
>ply   score     time     nodes    pv
>
>  2     403     0.01       909
>  3     498     0.04      1466    f2 Nf1 e3
>  4     454     0.07      3434    f2 Nf1 e3 Kd3 Ke5
>  5     459     0.12      8177    f2 Nf1 e3 Kd3 Ke5 Ke2
>  6     406     0.25     22859    f2 Nf1 e3 Kd3 Ke5 a5 Kd6
>  7     411     0.58     61387    f2 Nf1 e3 Kd3 Ke5 a5 Kd6 Ke2
>  8     424     2.43    186041    f2 Nf1 Kf5 a5 e3 Kd3 Kg4 a6 Kxh4
>  9     359     7.27    506374    f2 Nf1 e3 Kd3 Ke5 a5 Kd6 Ke2 Kc5 Nxe3 Nxe3
>Kxf2 Nxc4
> 10     223    19.00   1346641    f2 Nf1 e3 Kd3 g5 Pxg5 Ke5 a5 Kd6 Ke2 Kc5 Nxe3
>Nxe3 Kxf2 Nxc4
> 10     281    29.47   2097392    Nxe3 Kxe3 Kd6 a5
> 11     285    33.50   2395723    Nxe3 Kxe3 Kd6 a5 Kc6 Kf2 h6 a6 Kb6 c5 Kxa6 c6
>Kb6


if you vary the weight of your endgame stuff based on material left, yes.  I
have a special term for protected passed pawns...  it realizes that this is
almost impossible to lose for black if the white pawns can't run in too
quickly.

The key for this kind of stuff is just that however...  knowing that if you
have a winning edge (assuming no pieces on the board) then scale the scores
for that edge to be inversely proportional to the material remaining...



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