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Subject: Re: Maybe you give Shredder too much credit ?

Author: Jorge Pichard

Date: 12:57:36 02/25/04

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On February 25, 2004 at 07:46:49, James T. Walker wrote:

>Here is analysis by shredder 8 on a 2Ghz AMD.  Notice it has Qe3+ from 3 sec to
>1:34 sec and then gets it again at 5:54.  So it's a crap shoot as to whether it
>will actually play the move in a game (depends on the cpu speed/time
>control/hash table etc. etc.).

Regardless, if you allow shredder8 to play a shootout in 1 minutes per side
which is equivalent to 2 minutes on my 1.2 GHz it will still play Q=e3+ as the
first move. Simply try it, on your 2 GHz computer and do a shootout:-)

Jorge


>New game
>8/kp6/P5p1/2p1p3/2PpP3/3P3Q/4q3/6K1 b - - 0 1
>
>Analysis by Shredder 8:
>
>1...Qe1+ 2.Kg2 Kxa6 3.Qc8 Kb6 4.Qc6+ Kxc6
>  µ  (-1.01)   Depth: 1/1   00:00:00
>1...Kxa6 2.Qe6+ b6 3.Qc6 Qe3+ 4.Kg2 Qg5+ 5.Kf1 Qc1+ 6.Kg2 Qc2+ 7.Kg1 Qd2
>  -+  (-2.82)   Depth: 5/17   00:00:00
>  -+  (-2.07)   Depth: 8/23   00:00:00  72kN
>1...Qe1+ 2.Kg2 Qd2+ 3.Kh1 Qc1+ 4.Kg2 Qg5+ 5.Kh2 Kxa6 6.Qd7 Qf4+ 7.Kh1 Qc1+ 8.Kg2
>Qd2+ 9.Kg1 Ka5 10.Qxb7 Qc1+ 11.Kg2 Qc2+ 12.Kg1 Qc1+ 13.Kg2 Qc2+ 14.Kg1 Qc1+
>15.Kg2
>  -+  (-2.08)   Depth: 8/23   00:00:00  76kN
>  -+  (-2.98)   Depth: 12/31   00:00:02  774kN, tb=4
>1...Qe3+ 2.Qxe3 dxe3 3.axb7 Kxb7 4.Kf1 Ka6 5.Ke2 Ka5 6.Kxe3 Kb4 7.Kd2 g5 8.Kc2
>g4 9.Kd2 g3 10.Ke2 Kc3 11.Ke3 g2 12.Kf2 Kxd3 13.Kxg2 Kxc4 14.Kf2
>  -+  (-2.99)   Depth: 12/32   00:00:03  1048kN, tb=27
>  -+  (-3.26)   Depth: 18/40   00:00:56  19571kN, tb=4846
>1...Qe1+ 2.Kg2 Qd2+ 3.Kh1 Qc1+ 4.Kg2 Qb2+ 5.Kg1 Kxa6 6.Qc8 Qc1+ 7.Kg2 Qc2+ 8.Kh1
>Qxd3 9.Qa8+ Kb6 10.Qd8+ Kc6 11.Qf6+ Kd7 12.Qg7+ Ke6 13.Qg8+ Kf6 14.Qd8+ Kf7
>15.Qd7+ Kf8
>  -+  (-3.27)   Depth: 18/44   00:01:34  37617kN, tb=6412
>  -+  (-3.23)   Depth: 19/48   00:05:53  157597kN, tb=22072
>1...Qe3+ 2.Qxe3 dxe3 3.axb7 Kxb7 4.Kf1 Ka6 5.Ke2 Ka5 6.Kxe3 Kb4 7.Kd2 g5 8.Kd1
>Kc3 9.Ke2 g4 10.Ke3 g3 11.Ke2 g2 12.Kf2 Kxd3 13.Kg1
>  -+  (-3.24)   Depth: 19/48   00:05:54  158020kN, tb=22269
>  -+  (-4.39)   Depth: 19/48   00:05:56  158286kN, tb=23155
>
>(,  25.02.2004)

• Re: Your Analysis simulated what it took Botvinnik to select 52....Qe3+ Jorge Pichard 14:00:12 02/25/04
  • Re: Your Analysis simulated what it took Botvinnik to select 52....Qe3+ James T. Walker 17:50:23 02/25/04

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