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Subject: Re: how about 0.00 seconds?

Author: Uri Blass

Date: 14:48:08 07/17/02

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On July 17, 2002 at 17:16:07, Slater Wold wrote:

>On July 17, 2002 at 17:06:42, Joshua Lee wrote:
>
>>Szabo,L - Sigurjonsson,G
>>[D] 1br1r1k1/1b1q1pp1/p1p2n1p/1p2n3/1P6/PNN1P3/2QBBPPP/4RRK1 b - - 0 1
>>
>>Black to play 21...c5!! 22 Nxc5 RxN! 23 pxR Nf3+! 24 Bxf3 BxB 25 Ne2 Ne5
>
>
>W,S - Deep Junior 7
>1br1r1k1/1b1q1pp1/p1p2n1p/1p2n3/1P6/PNN1P3/2QBBPPP/4RRK1 b - - 0 1
>
>Analysis by Deep Junior 7:
>
>1...Neg4 2.h3 Nh2
>  ³  (-0.36)   Depth: 3   00:00:00
>1...Neg4 2.h3 Nh2
>  ³  (-0.36)   Depth: 3   00:00:00
>1...Neg4!
>  ³  (-0.66)   Depth: 6   00:00:00  3kN
>1...Neg4 2.Nc5 Bxh2+ 3.Kh1 Qc7 4.Nxb7 Qxb7 5.f3 Nd5 6.fxg4 Nxe3 7.Bxe3
>  =  (-0.15)   Depth: 9   00:00:00  145kN
>1...c5 2.bxc5 Qc6 3.e4 Nc4 4.Bf3 Nxd2 5.Qxd2
>  ³  (-0.34)   Depth: 9   00:00:00  176kN
>1...Nc4 2.Bxc4 bxc4
>  ³  (-0.36)   Depth: 9   00:00:00  262kN
>1...Nc4 2.Bxc4
>  =  (-0.06)   Depth: 12   00:00:00  770kN
>1...c5 2.bxc5 Qc6 3.e4 Nc4 4.Bf3 Qc7 5.g3 Nxa3
>  ³  (-0.44)   Depth: 12   00:00:00  1124kN

Deep Junior needed 1124 Knodes to find it.
It cannot be done in 0.00 seconds with the hardware of today.

>1...c5 2.bxc5 Nc4 3.Bc1 Qc6 4.e4 Nxe4 5.Nxe4 Qxe4 6.Qxe4 Bxe4 7.Bh5
>  µ  (-0.72)   Depth: 15   00:00:04  10830kN
>1...c5 2.Nxc5 Nf3+ 3.Bxf3 Qd6 4.g3 Bxf3 5.e4 Qe5 6.Nxa6 Nxe4 7.Re3 Red8 8.Nxb8
>Qxb8 9.Be1 Ng5 10.Re7
>  ³  (-0.51)   Depth: 18   00:01:13  162093kN
>
>(W,  17.07.2002)

162093 knodes in 73 seconds mean that 1124 knodes were probably calculated in
something like 0.5 seconds and not in 0.00 seconds.

Uri



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