Author: Terry Ripple
Date: 02:54:34 10/29/02
Go up one level in this thread
On October 29, 2002 at 05:08:15, Uri Blass wrote:
>On October 29, 2002 at 04:12:11, Terry Ripple wrote:
>
>>I don't understand why these two strong programs can't find Rxd4? Is it because
>>Qb2 is as good a move, or the way these two programs do their search?
>>
>>Regards,
>> Terry
>
>If you look at deep fritz7's analysis you can see that Qb2 is not a good move so
>the only reason that it does not play Rxd4 is that it evaluates Rxd4 as even
>worse.
>
>Can you beat or even draw against Fritz7 with Rxd4?
>
>I did not try but I do not think that you should assume that a move is good only
>because it was played in human-human games and the side who played it won the
>game.
>
>Uri
---------------
Uri,
I also want to add to your comment that you can't always believe either in what
a programs analysis is because they can't always read the position correctly
because of the horizon effect!
I also want to add that Hiarcs 8 and many of the other strong programs agree
that the sacrifice is stronger than Qb2,only Fritz 7, Tiger 14, and Junior7
don't find the sacrifice and believe that Qb2 is the better move. But does Qb2
get a draw or win, that's up to debate! Perhaps i will run some games with some
strong programs with the move Qb2 and see what happens.
Here is Junior 7's analysis that thinks Qb2 is better:
Regards,
Terry
New position
2qr2k1/p4ppp/Pp1Pp3/1Qp1P3/2Pn1P2/B6P/6P1/3R2K1 w - - 0 1
Analysis by Junior 7:
1.Rxd4 cxd4 2.Bb4
µ (-0.97) depth: 3 00:00:00
1.Qa4 Ne2+ 2.Kh2 Qa8 3.d7
= (0.05) depth: 3 00:00:00
1.Qb1 Ne2+ 2.Kf2 Qxa6 3.Kxe2
= (0.17) depth: 3 00:00:00
1.Qb1 Ne2+ 2.Kh2 Nc3 3.Qc2 Nxd1 4.Qxd1 Qxa6
µ (-0.74) depth: 6 00:00:00 8kN
1.Qb2 Qxa6 2.Rc1 Qa4
= (-0.06) depth: 6 00:00:00 9kN
1.Qb2 Qxa6 2.Qa2 Ne2+ 3.Qxe2 Qxa3 4.Qf2 Qc3
= (0.00) depth: 9 00:00:00 34kN
1.Qb2 Qxa6 2.Qa2 Qa4 3.Ra1 Qc2 4.Kh1 Qe2 5.Qxe2
= (-0.16) depth: 12 00:00:02 360kN
1.Qb2 Qxa6 2.Rc1 Ne2+ 3.Qxe2 Qxa3 4.Qd2 h6 5.Qc3 Qxc3 6.Rxc3 Kf8 7.Ra3
= (-0.17) depth: 15 00:00:15 2763kN
1.Qb2 Qxa6 2.Rc1 h5 3.Kh2 Qa4 4.Qa2 Nb3 5.Rc2 h4 6.Rb2
= (-0.23) depth: 17 00:00:57 9542kN
1.Qb2 Qxa6 2.Rc1 h5 3.Qa2 Qb7 4.Re1 Nf5 5.Qb3 h4
= (-0.24) depth: 18 00:02:41 25483kN
1.Qb2 Qxa6 2.Rc1 h5 3.Kh2 Qa4 4.Kh1 Nf5 5.Qc3 h4 6.Ra1
³ (-0.27) depth: 19 00:06:37 63285kN
1.Qb2 Qxa6 2.Qa2 Qa4 3.Ra1 h6 4.Kh1 a5 5.Kh2 Qc2 6.Kh1 Qe4
³ (-0.34) depth: 20 00:16:57 163792kN
1.Qb2 Qxa6 2.Qa2 Qa4 3.Ra1 h5 4.Kh2 Nb3 5.Qc2 b5 6.Ra2 Qxc4 7.Qxc4 bxc4 8.Rc2
Na5 9.Bxc5 a6
³ (-0.30) depth: 21 00:37:30 353023kN
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