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Subject: Re: The difference between Humans and Computers

Author: Enrique Irazoqui

Date: 16:26:24 12/12/00

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On December 12, 2000 at 18:59:59, Enrique Irazoqui wrote:

>On December 12, 2000 at 17:30:16, Joshua Lee wrote:
>
>>I was recently looking over my game against Averno(X) which is a strong winboard
>>program. I kept the position closed and was looking forward to the 50 move rule
>>at move 82 well we get from 32 to 62 with no captures and it decides to exchange
>>off it's good bishop for my bad one leaving me with a Strong knight against it's
>>bad dark squared bishop why thankyou .... move 78 i look at this move rook takes
>>Bishop but my mind was already made up ....Follow your gut feeling is the moral
>>to this story
>>
>>which program finds this and doesn't change it's mind not fritz untill 40
>>minutes ......on 800Mhz what's more annoying is the next day against the same
>>computer Rook takes bishop is the winning move again but in early the
>>middlegame.
>>
>> MR-LEE-AvernoX
>>7k/3rq2p/1p4p1/pNpPp1P1/P1P1PbQP/8/4K3/5R2 w - - 0 1
>
>Deep Fritz likes Rxf4, but I don't know if it will end up dropping it. I'll try
>again later.
>
>7k/3rq2p/1p4p1/pNpPp1P1/P1P1PbQP/8/4K3/5R2 w - - 0 1
>
>Analysis by Deep Fritz T29c:
>
>1.Qxd7--
>  -+  (-1.87)   Depth: 1/3   00:00:00
>1.Qxd7-- Qxd7
>  -+  (-3.03)   Depth: 1/3   00:00:00
>1.Rxf4!
>  -+  (-2.44)   Depth: 1/4   00:00:00
>1.Rxf4! exf4
>  µ  (-1.03)   Depth: 1/4   00:00:00
>1.h5!
>  ³  (-0.62)   Depth: 1/4   00:00:00
>1.h5! Bxg5
>  =  (-0.06)   Depth: 1/5   00:00:00
>1.Ke1!
>  =  (0.03)   Depth: 1/5   00:00:00
>1.Ke1 Kg7
>  =  (0.03)   Depth: 2/7   00:00:00
>1.Qe6!
>  =  (0.09)   Depth: 2/7   00:00:00
>1.Qe6! Qxe6 2.dxe6 Rd2+
>  ²  (0.59)   Depth: 2/7   00:00:00
>1.Qe6 Qxe6 2.dxe6 Rd2+ 3.Kf3
>  ²  (0.59)   Depth: 3/8   00:00:00
>1.Qe6--
>  ²  (0.28)   Depth: 4/11   00:00:00
>1.Qe6-- Qxe6 2.dxe6 Re7 3.Nd6
>  =  (0.06)   Depth: 4/11   00:00:00
>1.Qe6 Qxe6 2.dxe6 Re7 3.Nd6 Rxe6
>  =  (0.06)   Depth: 5/13   00:00:00  3kN
>1.Kf2!
>  =  (0.09)   Depth: 5/13   00:00:00  5kN
>1.Kf2 Qd8 2.Kg2 Kg7 3.Qe6 Rf7
>  =  (0.13)   Depth: 6/13   00:00:00  9kN
>1.Kf2 Kg7 2.Kg2 Qe8 3.Qe6 Qxe6 4.dxe6 Rd2+
>  =  (0.25)   Depth: 7/16   00:00:00  45kN
>1.Kf2 Kg7 2.Kg2 Rd8 3.Qe6 Qxe6 4.dxe6 Rd2+ 5.Kf3 Rd3+
>  =  (0.25)   Depth: 8/21   00:00:00  98kN
>1.Qe6!
>  ²  (0.28)   Depth: 8/21   00:00:00  109kN
>1.Qe6! Qxe6 2.dxe6 Re7 3.Rd1 Rxe6
>  ²  (0.34)   Depth: 8/21   00:00:00  119kN
>1.Qe6 Qxe6 2.dxe6 Re7 3.Rd1 Rxe6 4.Rd8+ Kg7 5.Rd7+ Kg8 6.Nd6 Kf8
>  ²  (0.38)   Depth: 9/21   00:00:00  191kN
>1.Qe6 Qxe6 2.dxe6 Re7 3.Rd1 Bg3 4.Rd8+ Kg7 5.Rd7 Kf8 6.Nd6 Bxh4
>  ²  (0.34)   Depth: 10/22   00:00:00  293kN
>1.Qe6!
>  ²  (0.66)   Depth: 11/27   00:00:00  1036kN
>1.Qe6 Qxe6 2.dxe6 Re7 3.Rd1 Rxe6 4.Rd8+ Kg7 5.Rd7+ Kh8 6.Nc7 Rc6
>  ²  (0.47)   Depth: 12/28   00:00:01  1976kN
>1.Nc3!
>  ²  (0.50)   Depth: 12/29   00:00:03  4373kN
>1.Nc3 Qd8 2.Kd3 Rf7 3.Qe6 Kg7 4.Ne2 Qb8 5.Nxf4 exf4 6.e5 f3
>  ²  (0.69)   Depth: 13/31   00:00:07  8534kN
>1.Nc3 Qe8 2.Qe6 Qxe6 3.dxe6 Re7 4.Nd5 Rxe6 5.Nxf4 exf4 6.Rxf4 Kg7
>  ±  (0.78)   Depth: 14/33   00:00:16  18630kN
>1.Nc3 Qe8 2.Qe6 Qxe6 3.dxe6 Re7 4.Nd5 Rxe6 5.Nxf4 exf4 6.Rxf4 Kg7
>  ±  (0.72)   Depth: 15/37   00:00:28  33036kN
>1.Nc3 Qe8 2.Qe6 Qxe6 3.dxe6 Re7 4.Rd1 Rxe6 5.Rd8+ Kg7 6.Nd5 h6
>  ²  (0.69)   Depth: 16/39   00:00:59  71134kN
>1.Rxf4!
>  ±  (0.72)   Depth: 16/39   00:01:46  130024kN
>1.Rxf4 exf4 2.Qxf4 Qe8 3.Qf6+ Kg8 4.Ke3 Rf7 5.Nd6 Rxf6 6.Nxe8 Rf1
>  ±  (0.97)   Depth: 17/38   00:02:12  161769kN
>
>Enrique

At ply 18 Deep Fritz drops Rxf4 in favor of Rd1 and sticks to it for at least 20
minutes.

Enrique



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