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Subject: Re: type position that most engines don't understand

Author: milix

Date: 07:26:15 11/07/04

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On November 07, 2004 at 05:20:10, Vincent Lejeune wrote:

>
>
>[d]8/8/5k2/5p1p/6rP/5R2/7K/8 b - - 0 1
>
>Analysis by Shredder 8:
>
>40...Re5
>  -+  (-1.60)   Profondeur: 1/1   00:00:00
>40...Re5
>  -+  (-1.60)   Profondeur: 1/1   00:00:00
>40...Re5
>  -+  (-1.60)   Profondeur: 1/1   00:00:00
>40...Re5
>  -+  (-1.60)   Profondeur: 1/1   00:00:00
>40...Re5 41.Te3+ Rd4
>  -+  (-1.55)   Profondeur: 2/4   00:00:00
>40...Re5 41.Rh3 Re4
>  -+  (-1.57)   Profondeur: 3/6   00:00:00
>40...Re5 41.Te3+ Rf4 42.Te2 Rf3
>  -+  (-1.68)   Profondeur: 4/7   00:00:00
>40...Re5 41.Te3+ Rf4 42.Te1 Rf3 43.Tf1+ Re4
>  -+  (-1.69)   Profondeur: 5/10   00:00:01
>40...Re5 41.Te3+ Rf4 42.Te1 Tg7 43.Te2 Rg4
>  -+  (-1.56)   Profondeur: 6/14   00:00:01
>40...Re5 41.Te3+ Rf4 42.Te1 Rf3 43.Tf1+ Re4 44.Rh3
>  -+  (-1.56)   Profondeur: 7/15   00:00:01  5kN, tb=213
>40...Re5 41.Te3+ Rd4 42.Ta3 f4 43.Ta4+ Rd3 44.Ta3+ Re4 45.Ta4+ Rd3 46.Ta3+ Re4
>47.Ta4+ Rd3 48.Ta3+
>  -+  (-1.59)   Profondeur: 8/21   00:00:02  21kN, tb=515
>40...Re5 41.Te3+ Rd4 42.Ta3 f4 43.Ta4+ Rd3 44.Ta3+ Re4 45.Ta4+ Rf5 46.Ta3 Re5
>47.Tf3 Re4 48.Ta3
>  -+  (-1.60)   Profondeur: 9/20   00:00:03  34kN, tb=672
>40...Re5 41.Te3+ Rd4 42.Ta3 f4 43.Ta4+ Rd3 44.Ta3+ Re4 45.Ta4+ Rd3 46.Ta3+ Re4
>47.Ta4+ Rd3 48.Ta3+
>  -+  (-1.60)   Profondeur: 10/22   00:00:03  44kN, tb=775
>40...Re5 41.Te3+ Rd4 42.Ta3 f4 43.Ta4+ Rd3 44.Ta3+ Re4 45.Ta4+ Rd3 46.Ta3+ Re4
>47.Ta4+ Rd3 48.Ta3+
>  -+  (-1.60)   Profondeur: 11/24   00:00:03  68kN, tb=996
>40...Re5 41.Ta3 f4 42.Ta5+ Re4 43.Ta4+ Re3 44.Ta3+ Rf2 45.Ta2+ Re1 46.Ta1+ Rd2
>47.Ta2+ Rc1
>  -+  (-1.45)   Profondeur: 12/27   00:00:06  207kN, tb=2033
>40...f4 41.Ta3 Tg6 42.Ta2
>  -+  (-1.46)   Profondeur: 12/27   00:00:06  224kN, tb=2247
>40...f4 41.Ta3 Tg6 42.Rh3 Rf5 43.Ta5+ Rf6 44.Ta6+ Rf7 45.Ta7+ Rg8 46.Ta8+ Rh7
>47.Ta2 f3 48.Tf2
>  -+  (-1.46)   Profondeur: 12/27   00:00:06  249kN, tb=2288
>40...f4 41.Ta3 Tg6 42.Rh3 Tg1 43.Ta5 Tg3+ 44.Rh2 Tg7 45.Tc5 Re6 46.Txh5 f3
>47.Ta5
>  µ  (-1.37)   Profondeur: 13/28   00:00:08  367kN, tb=2998
>40...f4 41.Ta3 Rf5 42.Ta5+ Rg6 43.Ta6+ Rh7 44.Ta7+ Tg7 45.Ta5 Rg8 46.Txh5 Rf8
>  µ  (-1.13)   Profondeur: 14/30   00:00:13  726kN, tb=5570
>40...Re5 41.Ta3 Tg6 42.Ta5+ Rf4 43.Ta4+ Rf3 44.Ta3+ Re2 45.Ta2+ Rd3 46.Ta3+ Rd4
>47.Ta4+ Rd3
>  µ  (-1.14)   Profondeur: 14/30   00:00:14  799kN, tb=5982
>40...Re5 41.Ta3 Tc4 42.Rg3 Re4 43.Tf3 Tc6 44.Tf4+ Re5 45.Ta4 Tc3+ 46.Rf2 Tg3
>  µ  (-1.24)   Profondeur: 14/32   00:00:17  991kN, tb=7332
>40...Re5 41.Ta3 Tc4 42.Rg3 Re4 43.Tf3 Tc6 44.Tf4+ Re5 45.Ta4 Tc3+ 46.Rf2 Td3
>47.Tc4 Td4 48.Tc5+ Td5 49.Tc4
>  µ  (-1.22)   Profondeur: 15/28   00:00:21  1169kN, tb=9833
>40...Re5 41.Ta3 Tc4 42.Rg3 Re4 43.Tf3 Tc6 44.Tf4+ Re5 45.Ta4 Tc3+ 46.Rf2 Td3
>47.Ta7 Td4 48.Te7+ Rf4 49.Te2
>  µ  (-1.23)   Profondeur: 16/25   00:00:27  1471kN, tb=13830
>40...Re5 41.Ta3 Tc4 42.Rg3 Re4 43.Tf3 Tc7 44.Tf4+ Re5 45.Tb4 Tc3+ 46.Rf2 Td3
>47.Rg2
>  µ  (-1.24)   Profondeur: 17/27   00:00:39  1875kN, tb=19439
>
>Rook vs Rook and a+c pawns (or f+h) are draw in most of cases (when defending
>king is in front of pawns), most engine are very happy with 2 pawns up ; that's
>the main reason why i downloaded the KRPPKR egtb but when there still a pawn on
>the other side, egtb are useless and engines think they have a very good
>position (with do not take the pawn !!!)

Yes, this is really annoying! There must be some king of a rule that says "if
you have a good capture that is leading you to a draw then the position may be
draw" and adjust the score according to that, say score /= 4.



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