Author: Eduard Nemeth
Date: 09:38:58 10/15/01
Go up one level in this thread
On October 14, 2001 at 10:31:17, Eelco de Groot wrote: >On October 14, 2001 at 09:19:03, Eduard Nemeth wrote: > >> >>And this is a interesting testposition: >> >>[D]8/8/8/pp1b4/3P2k1/P1KN1bP1/8/8 w - - >> >> >>My Fritz6 played here strong a4!! with a draw. Shredder an Tiger played here >>an losing move! >> >>Regards, >>Eduard > >Hi Eduard, Hello Eelco! Thank You for this interesting post! Fritz6x is my Nickname on the Fritz7 Server and I play in Computerroom with this Nickname only with Fritz6 engines (a,b,c). But in Human room I plays without computers. My another nicknames are "Wolkenlos" and "Solist". :) > >Looking at your position Q5T version of Rebel Century plays 1.Nc5 and doesn't >see a way out: > >[D]8/8/8/pp1b4/3P2k1/P1KN1bP1/8/8 w - - > > >Rebel Engine for ECTool. (c) Ed Schröder > >Engine version : REBEL CENTURY 2 >Rebel personality : "Q5T" >Opening book file : RebelC.mvs >Hash table size : 12 MB >Analysis mode : Analyzing next move >Refresh interval : 500 ms > >Game begin > >00:00 08.01 -2.33 1.Nf4 Ba2 2.Ng6 Kxg3 3.Ne7 Bad5 4.Kd3 Kf4 >00:00 09.00 -2.41 1.Nf4 Kxg3 2.Ng6 Bc4 3.Ne7 Bfd5 4.Nf5 Kf4 5.Ne7 >00:01 09.01 -2.33 1.Nb4 axb4+ 2.Kxb4 Bc6 3.Kc5 Kxg3 4.Kd6 Kf4 5.Ke6 Bcd5+ >6.Kd6 >00:02 10.00 -2.34 1.Nb4 axb4+ 2.Kxb4 Be2 3.Kc5 Bec4 4.Kd6 Kxg3 5.Ke5 >00:02 10.02 -2.23 1.Nc5 Bg2 2.Na6 Bc6 3.Nc5 Kxg3 4.Nb3 a4 5.Nc5 Bce4 >00:05 11.00 -2.70 1.Nc5 Kxg3 2.Nd3 Bfe4 >00:13 12.00 -2.75 1.Nc5 Kxg3 2.Nd3 Bg2 3.Ne5 Kf4 >00:31 13.00 -2.65 1.Nc5 Kxg3 2.Nd3 Kg4 3.Ne5+ Kf4 >01:20 14.00 -2.72 1.Nc5 Kxg3 2.Nd7 Kf4+ 3.Nf6 Ba2 4.Kd3 Bc4+ 5.Kc3 Bfd5 6.Nd7 >06:44 15.00 -2.79 1.Nc5 Kxg3 >33:32 16.00 -2.94 1.Nc5 Kxg3 2.Nd7 Bg4 3.Ne5 > >I was curious what would happen after 1..bxa4 if as you say it is still a draw. >The continuation that comes out of the computer seems alright but I think you >are right; if a computer doesn't have special knowledge about this kind of >ending it thinks it will end up a piece more. Even if you enter 1.a4 bxa4 2.Kb2 >Kxg3 3.Ka3 Bc6 it still gives +3.6 for Black. But now I am curious does Fritz >know here that it is a draw or was 1.a4 played without the right knowledge? Or >is it not a draw after all? > > >After 1.a4: > >Last Move : 1.a4 (Black to play) > >00:00 08.00 3.65 1..bxa4 2.Kb2 Kxg3 3.Ka3 Bb3 4.Nc5 Bfd1 5.Nxb3 Bxb3 >00:00 09.00 3.21 1..bxa4 2.Kb2 Kxg3 3.Ka3 Bc6 4.Nb2 Kf4 5.Nxa4 >00:01 10.00 3.77 1..bxa4 2.Kb2 Kxg3 3.Ka3 Bb3 4.Nc5 Bfd1 5.Nxb3 Bxb3 6.Kb2 >Bd5 7.Ka3 Kg4 >00:03 11.00 3.14 1..bxa4 2.Kb2 Kxg3 3.Ka3 Bc6 4.Nb2 Kf4 5.Nc4 Bfe4 6.Nxa5 Bd7 >00:08 12.00 3.20 1..bxa4 2.Kb2 Kxg3 3.Ka3 Bc6 4.Ne5 Bb5 5.Nxf3 Kxf3 6.d5 Ke4 >7.d6 Bd7 8.Kb2 >00:21 13.00 3.22 1..bxa4 2.Kb2 Kxg3 3.Ka3 Bc6 4.Nb2 Kf4 5.Nxa4 >00:54 14.00 3.23 1..bxa4 2.Kb2 Kxg3 3.Ka3 Bb3 4.Nc5 Bfd1 5.Ne4 Kf4 >03:39 15.00 3.20 1..bxa4 2.Kb2 Kxg3 3.Ka3 Bc6 4.Nb2 Kf4 5.Nd3+ Ke3 >18:04 16.00 3.63 1..bxa4 2.Kb2 Kxg3 3.Ne5 > > > >After 1.a4 bxa4 2.Kb2 Kxg3 3.Ka3 Bc6 > >[D]8/8/2b5/p7/p2P4/K2N1bk1/8/8 w - - > >Last Move : 3... Bc6 (White to play) > >00:00 01.06 -3.38 4.Nc5 >00:00 07.03 -2.76 4.Ne5 Bb5 5.Nxf3 Kxf3 6.d5 Ke4 7.d6 Bd7 8.Kb2 >00:02 10.00 -2.76 4.Nb2 Kf4 5.Nd3+ Ke3 6.Ne5 Bb5 7.Nxf3 Kxf3 8.d5 Ke4 9.d6 >Bd7 >00:02 11.00 -2.76 4.Nb2 Kf4 5.Nd3+ Ke3 6.Ne5 Bb5 7.Nxf3 Kxf3 8.d5 >00:04 12.00 -3.04 4.Nb2 Kf4 5.Nxa4 Ke4 >00:12 13.00 -3.29 4.Nb2 Kf4 5.Nxa4 Ke3 >01:02 14.00 -3.01 4.Nb2 Kf4 5.Nxa4 Ke4 >06:44 15.00 -3.11 4.Nb2 Kf4 5.Nxa4 Ke4 >24:55 16.00 -3.59 4.Nb2 Kf4 5.Nxa4 > >What does Fritz 6 or 6x do in this position? Does it know it is a draw? I belive that after h1=B the game is allways draw. The opponent in this game was Gambit Tiger 2.0 (style: aggressive)! Here the Analysis From Fritz6c: Neue Stellung 8/8/2b5/p7/p2P4/K2N1bk1/8/8 w - - 0 1 Analysis by Fritz 6: 1.Se5 Lb5 2.Sxf3 Kf4 3.Sg5 Ld7 4.Se4 Ke3 5.d5 Kd4 ³ (-0.28) Tiefe: 12/20 00:00:01 449kN, tb=43 1.Se5 Lb5 2.Sxf3 Kf4 3.d5 Ke4 4.d6 Kd5 5.Sd4 Ld7 = (-0.22) Tiefe: 13/21 00:00:02 1002kN, tb=158 1.Se5 Lb5 2.Sxf3 Kf4 3.d5 Ke4 4.d6 Kd5 5.Sd4 Ld7 = (-0.22) Tiefe: 14/23 00:00:04 1784kN, tb=519 1.Se5 Lb5 2.Sxf3 Kf4 3.d5 Ke4 4.d6 Kd5 5.Sd4 Ld7 = (-0.22) Tiefe: 15/22 00:00:07 2894kN, tb=1325 1.Se5 Lb5 2.Sxf3 Kxf3 3.Kb2 Kg2 4.Ka1 a3 5.d5 Kh3 = (-0.22) Tiefe: 16/27 00:00:12 4897kN, tb=2524 1.Se5 Lb5 2.Sxf3 Kxf3 3.Kb2 Kg2 4.Ka1 a3 = (-0.22) Tiefe: 17/25 00:00:17 7115kN, tb=4178 1.Se5 Lb5 2.Sxf3 Kxf3 3.Kb2 Kg2 4.Ka1 a3 = (-0.22) Tiefe: 18/27 00:00:27 11413kN, tb=7547 1.Se5 Lb5 2.Sxf3 Kxf3 3.Kb2 Kg2 4.Ka1 a3 = (-0.22) Tiefe: 19/29 00:00:44 18593kN, tb=13263 (Nemeth, Stuttgart 15.10.2001) > >Actually I should be studying and not chesspositions, tentams coming and I >started a bit late, so I better sign off again... > >Groeten allemaal! > >Eelco Best wishes, Eduard
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