Author: Uri Blass
Date: 01:45:29 10/29/05
Go up one level in this thread
On October 29, 2005 at 03:02:53, Kurt Utzinger wrote: >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) I get the following analysis by Shredder9 New game, r4r1k/1ppbn1p1/3p1n1p/p2P1pNq/2P1pP1P/PPQ1P1P1/6B1/R2R1NK1 b - - 0 1 Analysis by Shredder 9 UCI: 1...hxg5 -+ (-1.76) Depth: 1/1 00:00:00 1...hxg5 -+ (-1.76) Depth: 1/2 00:00:00 1...hxg5 ³ (-0.26) Depth: 2/2 00:00:00 1...hxg5 2.hxg5 ³ (-0.26) Depth: 2/3 00:00:00 1...Qe2 ³ (-0.39) Depth: 2/5 00:00:00 1...Qe2 µ (-0.74) Depth: 2/5 00:00:00 1...Qe2 2.Rab1 µ (-0.74) Depth: 2/5 00:00:00 1...a4 µ (-0.77) Depth: 2/6 00:00:00 1...a4 2.Ne6 µ (-0.77) Depth: 2/6 00:00:00 1...a4 2.Ne6 Bxe6 3.dxe6 µ (-0.77) Depth: 3/6 00:00:00 1...a4 2.Ne6 Bxe6 3.dxe6 axb3 µ (-0.77) Depth: 4/7 00:00:00 1...a4 2.Ne6 ³ (-0.52) Depth: 5/9 00:00:00 1...a4 2.Ne6 = (-0.01) Depth: 5/9 00:00:00 1...a4 2.b4 Qe2 3.Re1 Qg4 = (0.06) Depth: 5/9 00:00:00 1...hxg5 = (0.05) Depth: 5/9 00:00:00 1...hxg5 2.hxg5 Ng4 3.Rac1 Kg8 4.Qd4 Rac8 = (-0.25) Depth: 5/11 00:00:00 1...Rfe8 ³ (-0.26) Depth: 5/11 00:00:00 1...Rfe8 2.Ne6 Bxe6 3.dxe6 Nc6 4.Kh2 ³ (-0.49) Depth: 5/11 00:00:00 1...Rfe8 2.Nh3 Qe2 3.Rd2 Qg4 4.Kf2 ³ (-0.54) Depth: 6/15 00:00:00 29kN 1...Rfe8 2.Nh3 Qe2 3.Rd2 Qg4 4.Nf2 Qg6 ³ (-0.44) Depth: 7/15 00:00:01 55kN 1...Qg6 ³ (-0.45) Depth: 7/17 00:00:01 76kN 1...Qg6 2.Nh3 a4 ³ (-0.45) Depth: 7/17 00:00:01 79kN 1...Qg6 2.Nh3 Qg4 3.Ng5 ³ (-0.30) Depth: 8/20 00:00:01 178kN 1...Rfe8 ³ (-0.31) Depth: 8/20 00:00:01 186kN 1...Rfe8 2.Nh3 a4 3.b4 Qe2 4.Re1 Qd3 5.Qxd3 ³ (-0.42) Depth: 8/20 00:00:01 201kN 1...Ng6 ³ (-0.43) Depth: 8/20 00:00:01 241kN 1...Ng6 2.Nh3 a4 3.b4 Qe2 4.Rd2 Qg4 5.Kf2 ³ (-0.43) Depth: 8/20 00:00:01 247kN 1...Rg8 ³ (-0.44) Depth: 8/20 00:00:02 375kN 1...Rg8 2.Rd2 Ng4 3.Rc1 a4 4.b4 Qg6 5.Nh3 ³ (-0.45) Depth: 8/20 00:00:02 394kN 1...Kg8 ³ (-0.46) Depth: 8/20 00:00:02 418kN 1...Kg8 2.Qb2 a4 3.bxa4 Bxa4 4.Rd2 hxg5 5.hxg5 Ng4 ³ (-0.51) Depth: 8/20 00:00:02 443kN 1...Kg8 2.Rac1 Rfe8 ³ (-0.45) Depth: 9/20 00:00:03 683kN 1...Kg8 2.Kf2 Rfc8 ³ (-0.34) Depth: 10/23 00:00:05 1191kN 1...Ng6 ³ (-0.35) Depth: 10/24 00:00:05 1539kN 1...Ng6 2.Nh3 Kh7 3.Kf2 b6 4.Ng5+ Kg8 5.Nh3 Ng4+ 6.Kg1 Rfe8 ³ (-0.37) Depth: 10/24 00:00:05 1628kN 1...hxg5 ³ (-0.38) Depth: 10/24 00:00:05 1771kN 1...hxg5 2.hxg5 Ng4 3.Rac1 a4 4.b4 Kh7 5.c5 Rh8 6.cxd6 cxd6 7.Qd4 ³ (-0.43) Depth: 10/26 00:00:05 1927kN 1...hxg5 2.hxg5 Ng4 3.Re1 Kh7 4.Qd4 b6 5.Red1 ³ (-0.60) Depth: 11/26 00:00:07 2506kN 1...hxg5 2.hxg5 Ng4 3.Qd4 Kh7 4.c5 Bb5 ³ (-0.62) Depth: 12/27 00:00:08 3228kN 1...hxg5 2.hxg5 Ng4 3.Rac1 Kh7 4.b4 ³ (-0.61) Depth: 13/29 00:00:10 4019kN 1...hxg5 2.hxg5 Ng4 3.Qd4 Kh7 4.b4 ³ (-0.64) Depth: 14/30 00:00:16 6231kN 1...hxg5 2.hxg5 Ng4 3.Qd4 Kh7 4.Rac1 b6 5.Rd2 Rh8 6.Rdd1 Rhg8 7.Rd2 Rgc8 ³ (-0.61) Depth: 15/34 00:00:23 9521kN 1...hxg5 2.hxg5 Ng4 3.Qd4 Kh7 4.Re1 b6 5.Rab1 ³ (-0.69) Depth: 16/34 00:00:51 21106kN 1...hxg5 2.hxg5 Ng4 3.b4 b6 4.Qd4 Kh7 µ (-0.75) Depth: 17/36 00:01:34 39992kN 1...Rfc8 µ (-0.76) Depth: 17/36 00:01:59 50975kN 1...Rfc8 2.Rac1 µ (-0.76) Depth: 17/36 00:02:21 60168kN 1...Rfc8 2.Nh2 b5 3.Bf1 Rcb8 4.Kg2 Qg6 5.Kf2 b4 6.axb4 axb4 7.Rxa8 Rxa8 8.Qxb4 Kg8 9.Ne6 Nh5 10.g4 Bxe6 11.dxe6 ³ (-0.70) Depth: 18/38 00:05:15 132269kN 1...hxg5 µ (-0.71) Depth: 18/38 00:05:38 142168kN 1...hxg5 2.hxg5 Ng4 3.b4 b6 4.Qd4 Kh7 5.Rdb1 µ (-0.71) Depth: 18/38 00:05:52 148503kN 1...a4 µ (-0.72) Depth: 18/38 00:06:35 166774kN 1...a4 2.b4 b5 3.Rac1 bxc4 µ (-1.06) Depth: 18/38 00:08:08 205458kN (, 29.10.2005)
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