Author: blass uri
Date: 14:44:54 07/18/00
Go up one level in this thread
On July 18, 2000 at 16:49:00, Amir Ban wrote: >On July 18, 2000 at 15:31:17, Chessfun wrote: > >>On July 18, 2000 at 13:04:42, blass uri wrote: >> >>>On July 18, 2000 at 12:52:39, Chessfun wrote: >>> >>>>On July 18, 2000 at 09:44:58, blass uri wrote: >>>> >>>>>[D]rnbqk2r/1p1n1pbp/p1p1p1p1/3pP3/3P1B2/2N2N1P/PPPQ1PP1/R3KB1R w KQkq - 0 1 >>>>> >>>>>In this position Deep Junior played 9.Bg5. >>>>> >>>>>I test my Junior5.9 on PIII450 at time control of 9 hours/moves 9-11 >>>>>Junior5.9 liked Bg5 at depth 18 but changed its mind to Bh6 at depth 20. >>>>> >>>>>The score of 9.Bh6 at depth 20 is +0.62 >>>>>Junior5.9 found this move after 51 minutes and 21 seconds after searchng 936542 >>>>>knodes. >>>>> >>>>>Can Junior6a find the same move at iteration 20? >>>>>Did Junior miss this move because of the fact that the hardware was not fast >>>>>enough or because of bad time management? >>>>> >>>>>Uri >>>> >>>>Hi Uri !! >>>> >>>>I think you will find J6a will stick with 9. Bh6. >>>>I will leave it running as I have to go out for a bit. >>>> >>>>rnbqk2r/1p1n1pbp/p1p1p1p1/3pP3/3P1B2/2N2N1P/PPPQ1PP1/R3KB1R w KQkq - 0 1 >>>> >>>>Analysis by Junior 6.1: >>>> >>>>1.h4 c5 >>>> = (0.14) Depth: 3 00:00:00 >>>>1.Bh6 0-0 2.Qf4 Bxh6 3.Qxh6 >>>> ² (0.50) Depth: 6 00:00:00 4kN >>>>1.Bh6 0-0 2.Qf4 Bxh6 3.Qxh6 >>>> ² (0.50) Depth: 6 00:00:00 4kN >>>>1.Bh6 0-0 2.Qf4 Bxh6 3.Qxh6 >>>> ² (0.50) Depth: 6 00:00:00 4kN >>>>1.Bh6 0-0 2.Qf4 Bxh6 3.Qxh6 >>>> ² (0.50) Depth: 6 00:00:00 4kN >>>>1.Bh6 0-0 2.Qf4 Bxh6 3.Qxh6 >>>> ² (0.50) Depth: 6 00:00:00 4kN >>>>1.Bh6 0-0 2.Qf4 Bxh6 3.Qxh6 >>>> ² (0.50) Depth: 6 00:00:00 4kN >>>>1.Bh6 0-0 2.Qf4 Qb6 3.0-0-0 c5 4.dxc5 >>>> ² (0.49) Depth: 9 00:00:00 36kN >>>>1.Bh6 0-0 2.Qf4 f6 3.Bxg7 Kxg7 4.Qg4 fxe5 5.dxe5 Rf5 >>>> ² (0.41) Depth: 12 00:00:05 750kN >>>>1.Bh6 0-0 2.Qe3 c5 3.Bxg7 Kxg7 4.dxc5 Qa5 >>>> ² (0.45) Depth: 14 00:00:17 4206kN >>>>1.Bh6 0-0 2.h4 c5 3.Bxg7 Kxg7 4.h5 Rh8 5.dxc5 Nxc5 6.Ng5 >>>> ² (0.50) Depth: 16 00:01:18 20095kN >>>> >>>>(Bird, Scarb 18.07.2000) >>>> >>>>Thanks. >>> >>>We will see. >>> >>>My Junior5.9 also liked Bh6 only to change its mind later to Bg5 and later again >>>to Bh6. >>> >>>I think it got only depthes 3,6,9,12,15,18,20 and I am not sure about the depth >>>that it changed its mind to Bg5. >>> >>>Uri >> >>You are right changed to Bg5 then back to Bh6. >> >>Bird,S - Junior 6.1 >>rnbqk2r/1p1n1pbp/p1p1p1p1/3pP3/3P1B2/2N2N1P/PPPQ1PP1/R3KB1R w KQkq - 0 1 >> >>Analysis by Junior 6.1: >>1.Bh6 0-0 2.Qf4 f6 3.Bxg7 Kxg7 4.Qg4 fxe5 5.dxe5 Rf5 >> ² (0.41) Depth: 12 00:00:05 750kN >>1.Bh6 0-0 2.Qe3 c5 3.Bxg7 Kxg7 4.dxc5 Qa5 >> ² (0.45) Depth: 14 00:00:17 4206kN >>1.Bh6 0-0 2.h4 c5 3.Bxg7 Kxg7 4.h5 Rh8 5.dxc5 Nxc5 6.Ng5 >> ² (0.50) Depth: 16 00:01:18 20095kN >>1.Bh6 0-0 2.h4 c5 3.Bxg7 Kxg7 4.h5 Rh8 5.hxg6 hxg6 6.Rxh8 Qxh8 7.Ng5 >> ² (0.50) Depth: 17 00:04:29 65980kN >>1.Bh6 0-0 2.0-0-0 c5 3.dxc5 Nc6 4.Qf4 Qa5 >> ² (0.32) Depth: 18 00:31:27 221218kN >>1.Bg5 Qc7 2.Bh6 0-0 3.h4 c5 4.Bxg7 Kxg7 5.h5 Rh8 6.Qf4 cxd4 7.Qxd4 >> ² (0.33) Depth: 18 00:38:14 326132kN >>1.Bg5 Qb6 2.Na4 Qc7 3.Bh6 0-0 4.Qf4 c5 5.Bxg7 Kxg7 6.Nxc5 >> ² (0.28) Depth: 19 01:05:15 760545kN >>1.Bh6 0-0 2.0-0-0 c5 3.dxc5 Nc6 4.Qf4 Qa5 5.Bxg7 Kxg7 6.Re1 Qxc5 7.Ng5 >> ² (0.31) Depth: 19 01:11:26 858665kN >>1.Bh6 Kf8 2.0-0-0 c5 3.dxc5 Nc6 4.Re1 Qa5 5.Qf4 Bxh6 6.Qxh6+ Kg8 7.Ng5 Ndxe5 >> ² (0.60) Depth: 20 02:39:00 2114947kN >> >>(Bird, Scarb 18.07.2000) >> >>Thanks. > >Bg5 is correct IMO, and an improvement on Bh6. The problem is with the next move >0-0-0, which allows h6. White should play 10. Na4 Qc7 11. Bh6 > >10. 0-0-0 was played immediately as Qb6 was expected. I didn't check why it was >preferred over Na4. > >The reason why 9. Bg5 works is this: > >After 9. Bh6, 9... Bxh6 is forced (9... 0-0? 10. h4 is winning) 10. Qxh6 Qe7 11. >h4 Qf8 black manages to hang on. With the black queen on c7 black doesn't have >this resource. I guess that after 9.Bg5 Qb6 10.Na4 Qc7 11.Bh6 Bxh6 12.Qxh6 Qa5+ 13.Nc3 Qb4 with the idea Qf8 the position of white is not better than after 9.Bh6 Bxh6 10.Qxh6 Qe7 14.h4 is impossible after 13...Qb4 so it may be only worse. Uri
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