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Subject: Re: Position from Leiden, Round 10

Author: Johan Havegheer

Date: 12:33:18 10/31/02

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On October 30, 2002 at 16:13:36, Gerd Isenberg wrote:

>Position from Shark - IsiChessMMX, Leiden Round 10
>
>[D] r4rk1/2n1b1pN/pqb1p1Qp/1p6/P1p3n1/N1P1B3/1PB2PPP/R2R2K1 b - - ; bm Rxf2
>
>Even if the position is already won by black, finding the spectacular 24...Rxf2
>seems quite difficult for some engines. Ruffian is clearly the fastest i tried
>so far on my 2.1XP+ :
>
>Ruffian 1.0.0    2 seconds
>Shredder5       14 seconds
>IsiChessMMX     47 seconds
>
>May be a bad testposition due to Nxe3 wins too.
>
>Cheers,
>Gerd

Analyses on AMD Xp1500+

Analysis by Fritz 7:

-+  (-2.34) 1...Pxe3 2.a5 Dc5 3.fxe3 Dxe3+ 4.Kh1 Tf2 5.Tg1   00:00:00
-+  (-2.63) 1...Pxe3!   00:00:00
-+  (-2.38) 1...Pxe3 2.a5 Dc5 3.fxe3 Dxe3+ 4.Kh1 Tf2 5.Tg1 Le8 6.De4 Dxe4
00:00:02
-+  (-2.38) 1...Pxe3 2.a5 Dc5 3.fxe3 Dxe3+ 4.Kh1 Tf2 5.Te1 Dd2 6.Le4 Lxe4 7.Txe4
Dxb2   00:00:04
-+  (-2.41) 1...Txf2!   00:00:11
-+  (-2.56) 1...Txf2!   00:00:13
-+  (-2.88) 1...Txf2!   00:00:16
-+  (-3.50) 1...Txf2!   00:00:21


Analysis by Nimzo 8:

+-  (13.01) 1...a5   00:00:00
+-  (3.23) 1...b4   00:00:00
+-  (11.70) 1...b4   00:00:00
µ  (-1.03) 1...Pe5   00:00:00
-+  (-2.23) 1...Pxe3 2.fxe3 Dxe3+ 3.Kh1   00:00:00
-+  (-2.23) 1...Pxe3 2.fxe3 Dxe3+ 3.Kh1   00:00:00
-+  (-2.23) 1...Pxe3 2.fxe3 Dxe3+ 3.Kh1   00:00:00
-+  (-2.23) 1...Pxe3 2.fxe3 Dxe3+ 3.Kh1   00:00:00
-+  (-2.23) 1...Pxe3 2.fxe3 Dxe3+ 3.Kh1   00:00:00
-+  (-2.23) 1...Pxe3 2.fxe3 Dxe3+ 3.Kh1   00:00:00
-+  (-2.48) 1...Pxe3   00:00:00
-+  (-2.70) 1...Pxe3 2.a5 Dc5 3.fxe3 Dxe3+ 4.Kh1 Tf2   00:00:00
-+  (-2.71) 1...Txf2   00:00:00
-+  (-3.31) 1...Txf2   00:00:00
-+  (-3.30) 1...Txf2 2.Pf6+ Lxf6 3.Dh7+ Kf7 4.Lxb6 Txg2+ 5.Kf1   00:00:00
-+  (-3.55) 1...Txf2   00:00:00
-+  (-4.15) 1...Txf2   00:00:00
-+  (-6.54) 1...Txf2 2.Pf6+ Lxf6 3.Dh7+ Kf8 4.Lxb6 Txg2+ 5.Kf1 Pxh2+ 6.Ke1 Lh4+
 00:00:01
-+  (-6.79) 1...Txf2   00:00:02
-+  (-7.39) 1...Txf2   00:00:03
-+  (-7.52) 1...Txf2 2.Pf6+ Lxf6 3.Dh7+ Kf8 4.Lxb6 Txg2+ 5.Kf1 Pxh2+ 6.Ke1 Lh4+
 00:00:04

(Havegheer, Privé 31.10.2002)




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