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Subject: Re: Shredder 8 takes 11 minutes, how long for Shredder 9

Author: John Merlino

Date: 09:14:58 03/24/05

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On March 24, 2005 at 07:51:29, K. Burcham wrote:

>
>Shredder8 takes about 11 minutes before it decides best move.
>(yes I see the 36 seconds)
>
>Karpov Anatoli - V Topalov, 04, Linares Ftacnik 1994
> [D] rqr3k1/3Qbp2/p1n1p1p1/1pp5/2P2P2/2N3P1/PP3PB1/R3R1K1 w - - 0 1

For reference, CMX Yoda v25 finds the move in two seconds on a P4-2.4:

Time	Depth	Score	Positions	Moves
0:00	1/6	0.71	74089		20.Rxe6 Ra7 21.Rxg6+ fxg6 22.Qe6+
					Kg7 23.Bxc6 Bf6
0:00	1/6	0.93	87395		20.Bxc6 Ra7 21.Qd3 Rxc6 22.cxb5 Qd6
0:00	1/7	0.73	140644		20.Bxc6 Ra7 21.Qd3 Rxc6 22.cxb5
					Rb6 23.a4 axb5 24.Nxb5
0:01	1/8	0.49	290745		20.Bxc6 Ra7 21.Qd3 Rxc6 22.cxb5
					Rd6 23.Qe2 Qa8 24.bxa6 Raxa6
0:01	1/8	0.67	325636		20.cxb5 Ra7 21.Qd3 Rd8 22.Qb1 Nd4
					23.bxa6 Rxa6 24.Qd3
0:02	1/8	0.91	432619		20.Rxe6 Rc7 21.Rxg6+ fxg6 22.Qe6+
					Kg7 23.Bxc6 Qb6 24.cxb5 axb5
0:04	1/9	0.92	987363		20.Rxe6 Ra7 21.Rxg6+ fxg6 22.Qe6+
					Kg7 23.Bxc6 Bf6 24.cxb5 Re7 25.Qb3
0:09	1/10	0.70	2083933		20.Rxe6 Ra7 21.Rxg6+ fxg6 22.Qe6+
					Kg7 23.Bxc6 Bf6 24.Rd1 bxc4 25.Bg2
					Rd8
0:28	1/11	0.88	6175434		20.Rxe6 Ra7 21.Rxg6+ fxg6 22.Qe6+
					Kg7 23.Bxc6 bxc4 24.Bd7 Rxd7 25.Qxd7
					Rc7 26.Qd2 Qb7
0:56	2/12	0.71	12800948	20.Rxe6 Ra7 21.Rxg6+ fxg6 22.Qe6+
					Kg7 23.Bxc6 Bf6 24.cxb5 Re7 25.Qd5
					Bxc3 26.bxc3 axb5 27.Qxc5
2:47	2/13	0.71	38173427	20.Rxe6 Ra7 21.Rxg6+ fxg6 22.Qe6+
					Kg7 23.Bxc6 Bf6 24.cxb5 axb5 25.Bxb5
					Rd8 26.Qe3 Bd4 27.Qe1
7:27	2/14	0.79	102917557	20.Rxe6 Ra7 21.Rxg6+ fxg6 22.Qg4
					Kg7 23.Be4 g5 24.Qf5 Rh8 25.Qg6+
					Kf8 26.Bxc6 Qd6 27.Qxd6 Bxd6 28.Rd1
					b4 29.Rxd6 bxc3

jm



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