Author: chandler yergin
Date: 23:23:30 10/12/05
Go up one level in this thread
On October 13, 2005 at 00:10:46, Uri Blass wrote: >On October 12, 2005 at 23:56:37, Aloisio Ponti Lopes wrote: > >>[D] 2r2bk1/2rn1bpp/2nN1p2/p1Pp4/B2p4/P4N1P/3B1PP1/2RR2K1 b - - 0 29 >> >>wKg1,Nd6,f3,Ba4,d2,Rc1,d1,Pa3,c5,f2,g2,h3/bKg8,Nc6,d7,Bf7,f8,Rc7,c8,Pa5,d4,d5,f6,g7,h7 >> >>This is alson an internet game against another computer. >>In this position Shredder picks very quickly 29... Nxc5 and evals equality. >>Surprisinly Toga 1.0 played 29....Nde5 and lost the game in the endgame (bishop >>x rook with pawns for both sides). >> >>When I open Toga 1.0 analysing with FritzGUI I get this: >> >>New game, >>2r2bk1/2rn1bpp/2nN1p2/p1Pp4/B2p4/P4N1P/3B1PP1/2RR2K1 b - - 0 1 >> >>Analysis by Toga II 1.0: >> >>29...Nxc5 30.Nxc8 Nxa4 >> µ (-0.76) Depth: 1/2 00:00:00 >>29...Nxc5 30.Nxc8 Nxa4 >> µ (-0.76) Depth: 2/14 00:00:00 >>29...Nxc5 30.Nxc8 Nxa4 >> µ (-0.76) Depth: 2/14 00:00:00 >>29...Nxc5 30.Nxc8 Nxa4 >> µ (-0.76) Depth: 2/14 00:00:00 >>29...Nxc5 30.Nxc8 Nxa4 >> µ (-0.76) Depth: 3/14 00:00:00 >>29...Nxc5 30.Nxc8 Nxa4 31.Nxd4 >> ² (0.48) Depth: 4/18 00:00:00 >>29...Ra8 30.Nxf7 Kxf7 31.Bf4 Nde5 32.Nxd4 Nxd4 33.Rxd4 Rxc5 34.Rxc5 Bxc5 35.Rxd5 >> = (0.14) Depth: 4/18 00:00:00 >>29...Ra8 30.Nxf7 Kxf7 31.Bf4 Nde5 32.Nxd4 Nxd4 33.Rxd4 Rxc5 34.Rxc5 Bxc5 35.Rxd5 >> = (0.14) Depth: 5/18 00:00:00 >>29...Ra8 30.Nxf7 Kxf7 31.Bf4 Nde5 32.Nxd4 Nxd4 33.Rxd4 Rxc5 34.Rxc5 Bxc5 35.Rxd5 >> = (0.14) Depth: 6/19 00:00:00 40kN >>29...Nxc5 30.Nxc8 Nxa4 31.Nxd4 Bc5 32.Nxc6 Rxc6 >> = (-0.13) Depth: 6/19 00:00:00 49kN >>29...Nxc5 30.Nxc8 Nxa4 31.Nxd4 Nc5 32.Nxc6 Rxc6 33.Na7 >> = (-0.08) Depth: 7/19 00:00:00 69kN >>29...Nxc5 30.Nxc8 Nxa4 31.Nxd4 Nc5 32.Nxc6 Rxc6 33.Na7 Rc7 >> = (-0.08) Depth: 8/19 00:00:00 103kN >>29...Nxc5 30.Nxc8 Nxa4 31.Nxd4 Be8 32.Na7 Rxa7 33.Nxc6 Bxc6 34.Rxc6 Bxa3 >> = (0.09) Depth: 9/20 00:00:00 183kN >>29...Nde5 30.Nxc8 Rxc8 31.Nxe5 Nxe5 32.Kf1 Nc4 33.Bf4 Bxc5 34.Bd7 Rd8 >> = (-0.22) Depth: 9/24 00:00:00 556kN >>29...Nde5 30.Nxc8 Rxc8 31.Nxe5 Nxe5 32.Bb5 Nc4 33.c6 Bxa3 34.Ra1 Bh5 35.Re1 >> = (0.03) Depth: 10/24 00:00:00 881kN >>29...Nde5 30.Nxc8 Rxc8 31.Nxe5 Nxe5 32.Bb5 Nc4 33.c6 Bxa3 34.Ra1 Bb2 35.Rxa5 >>Nxa5 36.Bxa5 Bc3 >> = (-0.07) Depth: 11/24 00:00:01 1591kN >>29...Nde5 30.Nxc8 Rxc8 31.Nxe5 Nxe5 32.Bb5 Nc4 33.c6 Bxa3 34.Ra1 Bc5 35.Bxa5 Be8 >>36.Bxc4 dxc4 >> = (0.09) Depth: 12/25 00:00:02 2838kN >>29...Nde5 30.Nxc8 Rxc8 31.Bxc6 Nxf3+ 32.gxf3 Rxc6 33.Bxa5 Rxc5 34.Bb4 Rxc1 >>35.Rxc1 Be6 36.Kg2 d3 37.Rc7 d4 >> = (-0.03) Depth: 13/29 00:00:06 6189kN >>29...Nde5 30.Nxc8 Rxc8 31.Bxc6 Nxf3+ 32.gxf3 Rxc6 33.Bxa5 Rxc5 34.Bb4 Rxc1 >>35.Rxc1 Be6 36.Kg2 d3 37.Rc7 d4 38.Kg3 >> = (0.01) Depth: 14/31 00:00:09 9755kN >>29...Nde5 30.Nxc8 Rxc8 31.Bxc6 Nxf3+ 32.gxf3 Rxc6 33.Bxa5 Rxc5 34.Rxc5 Bxc5 >>35.Bb4 Ba7 36.Rc1 Be6 37.Rc7 Bb8 38.Re7 Bf7 >> = (0.08) Depth: 15/32 00:00:16 16792kN >>29...Nde5 30.Nxc8 Rxc8 31.Bxc6 Nxf3+ 32.gxf3 Rxc6 33.Bxa5 Rxc5 34.Rxc5 Bxc5 >>35.Bb4 Ba7 36.Rc1 Be6 37.Rc7 Bb8 38.Re7 Bf7 39.a4 >> ² (0.36) Depth: 16/32 00:00:29 30260kN >>29...Nxc5 30.Nxc8 Nxa4 31.Nxd4 Nb2 32.Re1 Nc4 33.Nxc6 Rxc6 34.Ne7+ Bxe7 35.Rxe7 >>Re6 36.Rxe6 Bxe6 37.Bc3 a4 38.Re1 Kf7 39.Bb4 >> ² (0.30) Depth: 16/32 00:00:37 38175kN >>29...Ra8 30.Nxf7 Kxf7 31.Bf4 Nce5 32.Bb3 Nxf3+ 33.Kf1 Rxc5 34.Rxc5 Nxc5 35.Bxd5+ >>Ne6 36.Bxa8 Nxf4 37.Bxf3 Bc5 38.Be4 g6 39.Ke1 >> = (0.21) Depth: 16/38 00:01:27 88817kN >>--------------------------------------- >> >>Well it seems to me that Shredder's middlegame knowledge is superior than >>Fruit-Toga's knowledge... am I wrong? >> >>A. Ponti It was the best move of the 3 main choices. New game, [D]2r2bk1/2rn1bpp/2nN1p2/p1Pp4/B2p4/P4N1P/3B1PP1/2RR2K1 b - - 0 1 Analysis by Shredder 8: 1. ± (0.78): 1...Nxc5 2.Nxc8 Nxa4 3.Nxd4 Be8 4.Nxc6 Bxc6 5.Nb6 Nxb6 6.Bxa5 Bxa3 7.Bxb6 2. ± (1.36): 1...Rd8 2.Bxc6 Rxc6 3.Bxa5 Ra8 4.Bb4 Nxc5 5.Nxf7 Kxf7 6.Rxd4 Rd8 7.Rcd1 Rcc8 8.Rxd5 3. ± (1.39): 1...Ra8 2.Nxf7 Nxc5 3.Bf4 Nxa4 4.Bxc7 Nc3 5.Nd6 Ra7 6.Nb5 Nxb5 7.Bb6 Nc3 8.Bxa7 Nxa7 9.Re1 (, 12.10.2005) > >It is wrong to get that conclusion from a single position. >It seems that Shredder has bigger evaluation for exchange advantage. > >sometimes it help shredder to play better but sometimes it is the opposite > >please see the following position > >Fruit had no problem to find the exchange sacrifice when Shredder or Fritz have >problems. >http://www.talkchess.com/forums/1/message.html?454193 > >Uri
This page took 0 seconds to execute
Last modified: Thu, 15 Apr 21 08:11:13 -0700
Current Computer Chess Club Forums at Talkchess. This site by Sean Mintz.