Author: gervais
Date: 12:10:09 01/27/02
Go up one level in this thread
On January 27, 2002 at 14:16:27, Roy Eassa wrote:
>On January 27, 2002 at 02:38:11, gervais wrote:
>
>>Hi,
>> I am an amateur chess player looking for a possible upgrade from my old
>>Pentium 166. I am using Fritz 6 as my main chess program.
>>While looking at some classical games recently, I saw one from Fischer with a
>>brilliant combination.(IMHO). I decided I would upgrade my system if I could
>>be shown that current hardware/software is able to find this combination within
>>a reasonable amount of time.
>>
>>[Event "US Championship"]
>>[Site "NY USA"]
>>[Date "1963.12.18"]
>>[Round "3"]
>>[White "Robert Byrne"]
>>[Black "Robert J. Fischer"]
>>[Result "0-1"]
>>
>>1.d4 Nf6 2.c4 g6 3.g3 c6 4.Bg2 d5 5.cxd5 cxd5 6.Nc3 Bg7 7.e3 O-O 8.Nge2 Nc6
>>9.O-O b6 10.b3 Ba6 11.Ba3 Re8 12.Qd2 e5 13.dxe5 Nxe5 14.Rfd1 Nd3 15.Qc2 Nxf2
>>16.Kxf2 Ng4+ 17.Kg1 Nxe3 18.Qd2 Nxg2 19.Kxg2 d4 20.Nxd4 Bb7 21.Kf1 Qd7! (0-1)
>>
>>The FEN is: r2qr1k1/p4pbp/bp3np1/3p4/8/BPNnP1P1/P1Q1NPBP/R2R2K1 b - - 2 15
>>
>>Think the FEN is ok.(its my first FEN!)
>>
>>So my question is: Can your computer find the follow-up to 15....Nxf2 right
>>till 21....Qd7? How long does it take to see the complete sequence of moves
>>that cause resignation? (15...Nxf2 is easy, but does it see everything
>>up to 21...Qd7 right from the start?)
>>Programs, Fritzmarks,processors, NPS, Ram,Mhz... Spare me no details :)
>>
>>Thanks and I hope to be shopping soon...
>
>
>More reasonable for today's computers might be the position after 18.Qd2 -- how
>long to choose 18...Nxg2, and how long before that move scores over +1 for Black
>(0:31 and 2:16, respectively on my test):
>
>[d] r2qr1k1/p4pbp/bp4p1/3p4/8/BPN1n1P1/P2QN1BP/R2R2K1 b - - 0 1
>
>Analysis by Fritz 7 (Athlon 1.2 GHz):
>
>18...Rc8 19.Nd4 Bxd4 20.Qxd4 Nc2 21.Qd2 Nxa3 22.Nxd5
> = (0.09) Depth: 7/22 00:00:00 493kN
>18...Rc8 19.Nd4 Bxd4 20.Qxd4 Nc2 21.Qa4 Nxa1 22.Rxa1 Rxc3 23.Qxa6
> = (0.03) Depth: 8/21 00:00:00 605kN
>18...Rc8 19.Nd4 Bxd4 20.Qxd4 Nc2 21.Qa4 Rxc3 22.Rxd5 Qc8 23.Rc1
> = (0.15) Depth: 9/24 00:00:02 1625kN
>18...Bxe2!
> = (0.12) Depth: 9/24 00:00:02 1696kN
>18...Bxe2 19.Nxe2 Bxa1 20.Rxa1 Nxg2 21.Kxg2 Qf6 22.Nd4 Qe5 23.Rc1 Qe4+ 24.Kg1
>Rac8
> = (0.21) Depth: 10/28 00:00:09 5838kN
>18...Rc8!
> = (0.18) Depth: 10/28 00:00:10 6116kN
>18...Rc8 19.Nd4 Bxd4 20.Qxd4 Nc2 21.Qa4 Rxc3 22.Bb2 Rce3 23.Qxa6 Nxa1 24.Rxa1
> = (0.21) Depth: 11/29 00:00:26 16251kN
>18...Nxg2!
> = (0.18) Depth: 11/31 00:00:31 19735kN
>18...Nxg2 19.Kxg2 d4 20.Nxd4 Bb7+ 21.Kf1 Qd7 22.Qf2 Bxd4 23.Rxd4 Qc6 24.Bb2 Qh1+
>25.Qg1 Qf3+
> = (0.00) Depth: 12/33 00:01:01 38576kN
>18...Nxg2!
> = (-0.22) Depth: 13/33 00:02:00 76850kN
>18...Nxg2!
> ³ (-0.50) Depth: 13/33 00:02:05 80471kN
>18...Nxg2!
> µ (-1.07) Depth: 13/33 00:02:16 87417kN
>18...Nxg2 19.Kxg2 d4 20.Nxd4 Bb7+ 21.Kf2 Qd7 22.Nce2 Rad8 23.Qc2 Qh3 24.Nf3 Bxf3
>25.Kxf3 Bxa1
> µ (-1.25) Depth: 13/37 00:02:44 103919kN
>18...Nxg2 19.Kxg2 d4 20.Nxd4 Bb7+ 21.Kf2 Qd7 22.Nf3 Qxd2+ 23.Nxd2 Bxc3 24.Rac1
>Bd4+ 25.Kf1 Bc8
> -+ (-1.50) Depth: 14/37 00:04:22 164445kN
>18...Nxg2 19.Kxg2 d4 20.Nxd4 Bb7+ 21.Kf2 Qd7 22.Nf3 Qxd2+ 23.Nxd2 Bxc3 24.Rac1
>Bd4+ 25.Kf1 Bc8
> -+ (-1.47) Depth: 15/41 00:08:04 303919kN
Hi and thanks to Kurt and Roy,
I guess its time for me to reduce my expectations.(Although Roy's
results on Athlon 1.2Ghz/Fritz 7 are very interesting). This combination is long
and difficult and perhaps the 21.Kf2 sub-variation is creating the difficulties.
Citing Fischer in "My Sixty Memorable Games": 21.Kf2 Qd7!
22.Rac1 Qh3 23.Nf3 Bh6 24.Qd3 Be3+ 25.Qxe3 Rxe3 26.Kxe3 Re8+ 27.Kf2 Qf5! finis!
(Roy, Fischer seems to prefer 22.Rac1 to 22.Nf3).
So, for a more realistic question(than my first one): Can recent
computers/software find the line starting from 22...Qh3 up to 27...Qf5! in this
sub-variation in a reasonable time?
The FEN is: r3r1k1/pb1q1pbp/1p4p1/8/3N4/BPN3P1/P2Q1K1P/2RR4 b - - 0 22
Thanks again
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