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Subject: Re: Korchnoi-Fischer,1970,G/5 - F7 want to play it after 3 minutes

Author: Torstein Hall

Date: 12:06:01 01/25/02

Go up one level in this thread


New game
r1bq2k1/p5bp/3p1nnr/P1pPp3/2P1Pp2/1NN2R1P/4B1P1/1R1QB1K1 b - - 0 1

Analysis by Fritz 7:

1...Nh4 2.Rf1 Qe8 3.Bxh4 Rxh4 4.Nb5 Qg6 5.Nxd6 Bxh3 6.Bf3
  =  (-0.16)   Depth: 9/24   00:00:00  260kN
1...Nh4 2.Rf1 Qe8 3.Rf2 Qg6 4.Qd3 Rb8 5.Kh2 Bd7 6.a6
  =  (-0.22)   Depth: 10/27   00:00:00  581kN
1...Nh4 2.Rf2 Qd7 3.Bf3 Rg6 4.Kh1 Nxf3 5.Rxf3 Qf7 6.Qd3 Rb8 7.Nb5
  =  (-0.19)   Depth: 11/28   00:00:03  2511kN
1...Nh4 2.Rd3 Rb8 3.Bf2 Rb4 4.g4 Nd7 5.Nb5 a6 6.Na7 Rxc4 7.Nxc8 Qxc8
  =  (-0.19)   Depth: 12/34   00:00:11  7350kN
1...Nh4 2.Rd3 Rb8 3.g3 Ng6 4.g4 Ne8 5.Bf1 Bd7 6.Qf3 Nh4 7.Bxh4
  =  (-0.22)   Depth: 13/35   00:00:28  18557kN
1...Nh4 2.Rd3 Rb8 3.Nd2 Rxb1 4.Qxb1 Qxa5 5.Qb8 Qd8 6.Bxh4 Rxh4 7.Nb5
  =  (-0.13)   Depth: 14/36   00:01:17  52261kN
1...Rb8!
  =  (-0.16)   Depth: 14/36   00:01:52  77505kN
1...Rb8 2.Bd3 Ne8 3.Bf1 Nh4 4.Bxh4 Rxh4 5.Nb5 Qe7 6.Nd2 Nf6 7.Qe2 Rh6
  =  (-0.19)   Depth: 14/39   00:02:44  113383kN
1...Nh8!
  =  (-0.22)   Depth: 14/39   00:03:08  128991kN
1...Nh8 2.Qd3 Nf7 3.Rf1 Rb8 4.Kh2 Ng5 5.Kg1 a6 6.h4 Nf7 7.Bf3
  ³  (-0.29)   Depth: 15/40   00:04:50  201519kN
1...Nh8 2.Qd3 Nf7 3.Rf1 Rb8 4.Bf3 Ng5 5.Be2 a6 6.h4 Nf7 7.Bf3 Ng4
  =  (-0.25)   Depth: 16/38   00:06:08  256198kN

(Hall, Privat 25.01.2002)



On January 25, 2002 at 14:04:29, Uri Blass wrote:

>On January 25, 2002 at 13:51:00, Mark Young wrote:
>
>>On January 25, 2002 at 13:34:33, Uri Blass wrote:
>>
>>>On January 25, 2002 at 13:22:37, Roy Eassa wrote:
>>>
>>>>
>>>>The original commentary said that the reason 1...Nh8 was best was to move it to
>>>>f7 then to g5 then to sacrifice it on h3.  Does any engine show this occurring
>>>>in the PV?
>>>
>>>It seems to me that after
>>>1...Nh8 2.Rf1 Nf7 3.h4 Ng5 4.hxg5 you can resign
>>>
>>>1...Nh8 2.Rf1 Nf7 3.h4 is shown in the pv that was posted.
>>>
>>>Uri
>>
>>Other programs are at a loss when it comes to this position. Most programs think
>>that white is better or equal. Only the Tigers are albe to solve this position
>>that I can find. one example below.
>>
>>New position
>>r1bq2k1/p5bp/3p1nnr/P1pPp3/2P1Pp2/1NN2R1P/4B1P1/1R1QB1K1 b - - 0 1
>>
>>Analysis by Crafty 18.13:
>>
>>1...Rb8
>>  ±  (0.95)   Depth: 1/5   00:00:00
>>1...Rb8 2.Bf2
>>  ±  (1.09)   Depth: 2/5   00:00:00
>>1...Nh4 2.Rd3
>>  ±  (0.87)   Depth: 2/5   00:00:00
>>1...Nh4 2.Bxh4 Rxh4 3.Qf1
>>  ±  (0.97)   Depth: 3/6   00:00:00
>>1...Rb8 2.Bf2 Rh5
>>  ±  (0.89)   Depth: 3/6   00:00:00
>>1...Rb8 2.Bd2 Nh4 3.Rf1
>>  ±  (0.90)   Depth: 4/9   00:00:00
>>1...Rb8 2.Rf1 Nh4 3.Bf2 Bd7
>>  ±  (0.82)   Depth: 5/12   00:00:00
>>1...Rb8 2.Rf1 Ne8 3.Bf2 Qg5 4.Qd2
>>  ±  (0.99)   Depth: 6/16   00:00:00  40kN
>>1...Nh4 2.Rf1 Nd7 3.Bg4 Qg5 4.Be6+ Kh8
>>  ±  (0.86)   Depth: 6/16   00:00:00  70kN
>>1...Nh4 2.Bxh4 Rxh4 3.Qf1 Rb8 4.Qf2 Rh5 5.Bd3
>>  ±  (0.86)   Depth: 7/17   00:00:01  131kN
>>1...Nh4 2.Rf1 Nxg2 3.Kxg2 Bxh3+ 4.Kf2 Bxf1 5.Kxf1 Rg6
>>  ±  (0.94)   Depth: 8/22   00:00:01  351kN
>>1...Ne8 2.Qd3 Qg5 3.Bd1 Bd7 4.a6 Nc7 5.Ra1
>>  ²  (0.65)   Depth: 8/22   00:00:03  867kN
>>1...Ne8 2.Rf1 Qg5 3.Bg4 Bxg4 4.Qxg4 Qxg4 5.hxg4 Rb8 6.Bf2 Nh4
>>  ²  (0.53)   Depth: 9/22   00:00:04  1522kN
>>1...Ne8 2.Bd2 Qg5 3.Kh1 Nh4 4.Rf2 Rb8 5.Qf1 Rg6 6.Bd3
>>  ²  (0.56)   Depth: 10/22   00:00:08  3342kN
>>1...Ne8 2.Bd2 Qg5 3.Kh1 Nh4 4.Rf2 Rb8 5.Qf1 Rg6 6.Nb5 Rb7
>>  ²  (0.46)   Depth: 11/27   00:00:19  7937kN
>>1...Ne8 2.Kh2 Qg5 3.Kh1 Nh4 4.Rf2 Qg3 5.Rb2 Qg5 6.Bg4 Rg6 7.Bxc8 Rxc8
>>  ²  (0.40)   Depth: 12/29   00:01:06  28325kN
>>1...Ne8 2.Bd2 Qg5 3.Kh1 Nh4 4.Rf2 Nf6 5.Qf1 Rb8 6.Bc1 Rg6 7.Bd3 Bd7
>>  ²  (0.39)   Depth: 13/29   00:05:38  139951kN
>>
>>(Young, MyTown 25.01.2002)
>
>The question is if Nh8 is really winning.
>The fact that tiger plays this move does not prove that it is winning
>and the real test that I did not do is if tiger can win other programs with
>black.
>
>Uri



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