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Subject: Re: Further examination DF7 missed

Author: Uri Blass

Date: 08:36:03 09/12/02

Go up one level in this thread


On September 12, 2002 at 10:48:23, Chessfun wrote:

>On September 12, 2002 at 09:30:22, Uri Blass wrote:
>
>>On September 12, 2002 at 08:08:53, Chessfun wrote:
>>
>>>On September 12, 2002 at 07:54:46, Chessfun wrote:
>>>
>>>>On September 12, 2002 at 07:29:08, Chessfun wrote:
>>>>
>>>>>
>>>>>[D]r1bq1rk1/3n1pp1/p1p1p2p/3pP3/1b3B1P/2N1Q3/PPP1BPP1/2KR3R w - - 0 15
>>>>>
>>>>>In this position Junior 7 plays Bxh6 0.68/17 2:13
>>>>>
>>>>>Junior 7 - Chessmaster 9000 [B66]
>>>>>
>>>>>1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Nc6 6.Bg5 e6 7.Qd2 a6 8.0-0-0 h6
>>>>>9.Nxc6  0.32/17  2:17  bxc6 10.Bf4 d5 11.Qe3  0.35/16  1:43  Be7 12.Be2 0-0
>>>>>13.h4 Bb4  0.40/10  53  14.e5  0.66/16  2:18  Nd7  0.42/10  39  15.Bxh6 (Qg3)
>>>>>0.68/17  2:12  15...Bxc3  0.58/11  47  16.bxc3  0.71/15  51  Qe7 (f6)  0.79/10
>>>>>33  17.Rh3  1.49/15  49  f5  1.47/11  1:55  18.Rg3  1.58/16  2:07  f4  1.54/11
>>>>>35  19.Bxf4  1.58/15  17  Qa3+ (Kh8)  1.58/10  29  20.Kd2  2.22/16  26  Kh8
>>>>>(Rb8)  2.65/10  1:16  21.Bh6  2.60/16  59  Rg8  2.88/10  28  22.Bd3 (Qg5)
>>>>>3.20/15  55  22...Qe7  7.57/11  3:20  23.Bxg7+  5.40/15  28  Qxg7  7.57/10  49
>>>>>24.Rxg7 5.73/15  24  1-0
>>>>>
>>>>>Sarah.
>>>>
>>>>Others naturally also get this, some more positive than others;
>>>>
>>>>Junior 7 - Chessmaster 9000
>>>>r1bq1rk1/3n1pp1/p1p1p2p/3pP3/1b3B1P/2N1Q3/PPP1BPP1/2KR3R w - - 0 1
>>>>
>>>>Analysis by Deep Fritz 7:
>>>>15.Qg3 Kh8 16.a3 Bc5 17.h5 Rb8 18.Na4 Be7 19.Be3 Qc7
>>>>  =  (0.19)   Depth: 10/31   00:00:02  1515kN
>>>>15.Qg3 Kh8 16.a3 Be7 17.Be3 f6 18.exf6 Bxf6 19.Bd3 Bxc3 20.Qg6 Bxb2+ 21.Kxb2
>>>>  =  (0.16)   Depth: 11/33   00:00:16  9754kN
>>>>15.a3!
>>>>  =  (0.19)   Depth: 11/34   00:00:25  15664kN
>>>>15.a3 Bc5 16.Qg3 Kh8 17.Na4 Be7 18.h5 Qa5 19.Rd4 Rb8
>>>>  =  (0.25)   Depth: 11/34   00:00:26  16193kN
>>>>15.a3 Bc5 16.Qg3 Kh8 17.Na4 Be7 18.Qg4 Qc7 19.Qh5 Rb8 20.g3
>>>>  =  (0.09)   Depth: 12/32   00:00:41  25917kN
>>>>15.Bxh6!
>>>>  =  (0.13)   Depth: 12/38   00:02:09  82424kN
>>>>15.Bxh6 Bxc3 16.bxc3 f6 17.exf6 Nxf6 18.Bf4 Ne4 19.f3 Nf2 20.Qxf2
>>>>  =  (0.25)   Depth: 12/38   00:02:18  88662kN
>>>
>>>Since DF7's score wasn't very positive and Fritz 7 having a similar score then
>>>changed I let DF7 run longer.
>>>
>>>Analysis by Deep Fritz 7:
>>>15.Bxh6 Bxc3 16.bxc3 f6 17.exf6 Nxf6 18.Bf4 Ne4 19.f3 Nxc3 20.Qxc3 Rxf4 21.Qxc6
>>>Rb8 22.Bxa6
>>>  =  (0.06)   Depth: 13/37   00:02:18  85886kN
>>
>>Fritz7 suggest 16...f6 that was not played in the game.
>>Can white win after 16...f6?
>>
>>Uri
>
>Junior and Deep Fritz 7 seem to think so...

At least Fritz needed a long discussion with Junior to be convinced
and I am not sure if it is going to be convinced by other engines that may play
different moves and not Rh3,Rg3.


>Anyway, clearly 15. Bxh6 is the best move.

I believe that you are right.

>
>Junior 7 - Deep Fritz 7 [B66]
>TB1400, TB1400 (1), 12.09.2002
>
>W=16.1 ply; 1,026kN/s
>B=14.1 ply; 680kN/s
> 1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Nc6 6.Bg5 e6 7.Qd2 a6 8.0-0-0 h6
>9.Nxc6 bxc6 10.Bf4 d5 11.Qe3 Be7 12.Be2 0-0 13.h4 Bb4 14.e5 Nd7 15.Bxh6 Bxc3
>16.bxc3 f6 Both last book move  -0.03/12  1:08  17.Rh3  0.81/14  1:08  Rf7
>(Nxe5)  0.12/13  1:34  18.Rg3  0.61/14  49  Qf8  0.00/13


Even here Fritz says 0.00 at depth 13 so I guess that Fritz may need very big
depth to see Bxh6 with convincing score at move 15.

Uri



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