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Subject: you're forcing the wrong moves

Author: Mike Byrne

Date: 17:07:23 05/15/03

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On May 15, 2003 at 19:55:53, John Merlino wrote:

>On May 15, 2003 at 19:44:07, Mike Byrne wrote:
>
>>>
>>>[d]8/8/8/4np1K/1NN2k2/1R6/1P5P/3n4 w - - 0 1
>>>
>>>Ipaq running Chess Genius is faster than many programs running on a dual 1.7 Ghz
>>>....amazingly...
>>>
>>>try it yourself...
>>
>>Tiger is one of the strongest if not, the strongest programs around -- it amazes
>>me it takes 4:43 on o 1.7 Ghz.
>>
>>Many other program are as long or longer -- position must be very tricky for
>>programs...
>
>CM9000, default personality, on a P3-733, needs 0:37 to find the mate in FOUR
>after forcing 1.Nc4 Nd7:
>
>Time	Depth	Score	Positions	Moves
>0:00	1/3	14.54	3764		2.Nd3+ Ke4 3.Nd6+ Kf3 4.Rxf5+ Ke2
>					5.Nc4
>0:00	1/3	20.05	18976		2.Nd2 Nc5 3.Rxc5 Nc3 4.Rbxc3
>0:00	1/4	20.21	33253		2.Nd2 Nc5 3.Rxc5 Nc3 4.Rcxc3 Ke5
>					5.Nd3+ Kf6 6.Nf4
>0:01	1/5	20.32	124987		2.Nd2 Nc5 3.Rxc5 Nc3 4.Rcxc3 Ke5
>					5.Re3+ Kd6 6.Rbd3+ Kc7 7.Re7+ Kb6
>0:02	1/6	21.21	318729		2.Nd2 Nc5 3.Rxc5 Nc3 4.Rcxc3 Ke5
>					5.Rc5+ Kf6 6.Rf3 Ke6 7.Rcxf5
>0:05	1/7	Mate08	741567		2.Nd2 Nf6+ 3.Kh4 Nc3 4.Rxc3 Nd5
>					5.Nxd5+ Ke5 6.Nc4+ Ke6 7.Re3+ Kd7
>					8.Re7+ Kd8 9.Ra8#
>0:08	1/7	Mate05	1150075		2.Rg3 Nxb2 3.Nd6 Nf6+ 4.Kg6 Nd5
>					5.Rxd5 Nc4 6.Rxf5#
>0:08	2/8	Mate05	1170108		2.Rg3 Nxb2 3.Nd6 Nf6+ 4.Kg6 Nd5
>					5.Rxd5 Nc4 6.Rxf5#
>0:10	3/9	Mate05	1492154		2.Rg3 Nxb2 3.Nd6 Nf6+ 4.Kg6 Nd5
>					5.Rxd5 Nc4 6.Rxf5#
>0:15	4/10	Mate05	2410371		2.Rg3 Nxb2 3.Nd6 Nf6+ 4.Kg6 Nd5
>					5.Rxd5 Nc4 6.Rxf5#
>0:26	5/11	Mate05	4505529		2.Rg3 Nf6+ 3.Kg6 Nd5 4.Rxd5 Ke4
>					5.Nd6+ Kf4 6.Rxf5#
>0:37	5/11	Mate04	6152533		2.Re5 Nf6+ 3.Kh4 Nxb2 4.Rbe3 Nxc4
>					5.Nd3#
>0:37	6/12	Mate04	6218332		2.Re5 Nf6+ 3.Kh4 Nxb2 4.Rbe3 Nxc4
>					5.Nd3#
>0:38	7/13	Mate04	6254153		2.Re5 Nf6+ 3.Kh4 Nxb2 4.Rbe3 Nxc4
>					5.Nd3#
>
>However, from the initial position, The King cannot find the mate in 5 in under
>10 minutes. Fascinating position....
>
>jm
 try Re3 followed by Nxe3 from the start in the diagram...



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