Author: Kurt Utzinger
Date: 12:10:48 12/25/02
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On December 25, 2002 at 14:53:19, Sune Larsson wrote: >On December 25, 2002 at 13:59:50, Kurt Utzinger wrote: > >>On December 25, 2002 at 13:09:45, Sune Larsson wrote: >> >>> >>> [D]5rk1/1ppq1rb1/p2p1nn1/3Pp3/2P1Ppp1/PPN3P1/3BQPB1/2R2RK1 w - - 0 25 >>> >>> >>> This position happened in a blitzgame of mine vs CM 9000Utz12 (white). >>> It's no longer a question of building a slow attack - instead it's already >>> there, in full bloom. Or, another way to put it, white has nothing and >>> black has everything. So, how do the programs evaluate such a position >>> with some time to think? A few results: >>> >>> >>> CM 9000Utz12 25.Qd3 -0.15 Ply 14 64 Mb hash >>> Shredder PB 25.Qd3 -0.28 Ply 14 128 Mb hash >>> Hiarcs 8 25.Qd3 -0.55 Ply 13 128 Mb hash >>> Fritz 8 25.Qd3 -0.59 Ply 14 128 Mb hash >>> Ruffian 25.Qd3 -0.69 Ply 14 128 Mb hash >>> Chess Tiger14 25.Bh1 -1.50 Ply 14 96 Mb hash >>> GambitTiger 2 25.Qd3 -2.26 Ply 14 96 Mb hash >>> >>> >>> It was with utmost effort that CM finally realized that it actually >>> is *worse* in the diagram position... With a tiny -0.15. CM Utzinger >>> has achived great results in comp-comp games and perhaps it's possible >>> to adjust the settings in a way that CM sees the danger?! King Safety? >>> >>> I'm curious of the evals from new programs like Chess Tiger 15, Shredder 7 >>> and maybe also Schachfreund Utzinger's latest CM personality (a very promising >>> one!)?! The whole game below. >>> >>New game >>5rk1/1ppq1rb1/p2p1nn1/3Pp3/2P1Ppp1/PPN3P1/3BQPB1/2R2RK1 w - - 0 1 >> >>Analysis by The King 3.23: [P4 1.8/32 MB hash, CM9_UtzX new unpublished setting] >> >>1.Rfd1 f3 2.Bxf3 gxf3 3.Qxf3 >> ³ (-0.55) Depth: 3 00:00:00 >>1.Rfe1 f3 2.Bxf3 gxf3 3.Qxf3 >> ³ (-0.49) Depth: 3 00:00:00 >>1.f3 fxg3 2.fxg4 Nxg4 >> = (0.18) Depth: 3 00:00:00 >>1.Qd3 Bh6 2.c5 Rh7 3.c6 Qg7 4.f3 fxg3 5.fxg4 Bxd2 6.Qxd2 Nf4 7.g5 Ng4 8.cxb7 >>Qxg5 >> ± (0.91) Depth: 3 00:00:00 >> = (-0.13) Depth: 13 00:02:54 24879kN >> >>(Utzinger, MyTown 25.12.2002) >> >>A typical but very good example where TheKing 3.23 is suffering from blindness. >>On the other hand: why should I increase king safety [so much as to get a >>realistic evaluation of the position] when the engine's overall strength becomes >>much weaker? I am not a programmer, but in such cases I wouldn't like to be one. >>Kurt > > > Of course the most important thing is to increase the engine's overall > strength. Especially when it comes down to longer time controls and playing > strength vs humans. I think we share the same view regarding those issues. > My idea was that there maybe are some adjustments to make linked to the > king safety - since CM proved to be blindest of them all. But perhaps > it's not that simple... Hi Sune I think you are right: it's not so simple. Kurt Homepage Kurt & Rolf: http://www.beepworld.de/members39/utzinger
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