Author: Kurt Utzinger
Date: 00:02:53 10/29/05
Go up one level in this thread
On October 29, 2005 at 01:24:26, Oliver Roese wrote:
>Hello,
>
>this position down the page originates from a very famous game from Alekhine,
>which he won after (temporarily) sacrificing a queen and a rook.
>
>In this position black can simply win by capturing the knight. I was very
>surprised, that Shredder 6 refuses to do so.
>Apparently a "Trojan Horse"-trap is assumed...
>
>
>
>Bogoljubov,E - Alekhine,A
>[D] r4r1k/1ppbn1p1/3p1n1p/p2P1pNq/2P1pP1P/PPQ1P1P1/6B1/R2R1NK1 b - - 0 1
>
>Analysis by Shredder 6:
>[...]
>20...Kg8 21.Tac1 Tfc8 22.Sh2 b5 23.Kf2 a4 24.b4 bxc4 25.Dxc4 Tab8 26.Sxe4 fxe4
>27.Dxc7
> = (0.02) Tiefe: 13/26 00:02:28 42633kN
>
>
Hi Oliver
Good observation ... but Shredder 7.04
and Shredder 8 do not better. Only the
latest Shredder 9 UCI considers ...hxg5
for a short time but soon changes its
mind :-)
Regards
Kurt
New game - Fritz 9, 180'/40
r4r1k/1ppbn1p1/3p1n1p/p2P1pNq/2P1pP1P/PPQ1P1P1/6B1/R2R1NK1 b - - 0 1
Analysis by Shredder 9 UCI:
1...hxg5 2.hxg5
-+ (-1.76) Depth: 1/1 00:00:00
³ (-0.26) Depth: 2/3 00:00:00
1...Qe2 2.Rab1
³ (-0.39) Depth: 2/5 00:00:00
µ (-0.74) Depth: 2/5 00:00:00
1...a4 2.b4 Qe2 3.Re1 Qg4
µ (-0.77) Depth: 2/6 00:00:00
= (0.06) Depth: 5/9 00:00:00
1...hxg5 2.hxg5 Ng4 3.Rac1 Kg8 4.Qd4 Rac8
= (0.05) Depth: 5/9 00:00:00
= (-0.25) Depth: 5/11 00:00:00
1...Rfe8 2.Nh3 Qe2 3.Rd2 Qg4 4.Nf2 Qg6
³ (-0.26) Depth: 5/11 00:00:00
³ (-0.44) Depth: 7/15 00:00:00 56kN
1...Qg6 2.Nh3 Qg4 3.Ng5
³ (-0.45) Depth: 7/17 00:00:00 76kN
³ (-0.30) Depth: 8/20 00:00:01 177kN
1...Rfe8 2.Nh3 a4 3.b4 Qe2 4.Re1 Qd3 5.Qxd3
³ (-0.31) Depth: 8/20 00:00:01 186kN
³ (-0.42) Depth: 8/20 00:00:01 201kN
1...Kg8 2.Kf2 Rfc8 3.Nh3 b6 4.Rac1 Ng4+ 5.Kg1 Nf6 6.Kh2 Qg4
³ (-0.43) Depth: 8/20 00:00:02 369kN
³ (-0.33) Depth: 10/22 00:00:06 1074kN
1...Ng6 2.Nh3 Rfe8 3.Kf2 Kg8 4.Rac1
³ (-0.34) Depth: 10/22 00:00:08 1478kN
³ (-0.34) Depth: 10/22 00:00:08 1535kN
1...hxg5 2.hxg5 Ng4 3.Rac1 Kh7 4.b4
³ (-0.35) Depth: 10/24 00:00:08 1584kN
³ (-0.65) Depth: 15/32 00:00:53 10530kN
1...a4
³ (-0.66) Depth: 15/32 00:01:06 13041kN
³ (-0.66) Depth: 15/32 00:01:06 13041kN
(Utzinger, 29.10.2005)
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