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Subject: Re: db - kaspa Rc7 versus Rc6

Author: Robert Hyatt

Date: 09:55:07 01/17/00

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On January 17, 2000 at 10:32:34, Vincent Diepeveen wrote:

>Diep also plays Rc7 like deep blue,
>
>[d]6rk/1N3p1p/5q2/3Q4/3p4/PP1n1pPP/5P2/2R3K1 w - -
>
>I only see positional evaluation
>difference between the moves Rc6 and Rc7 though.
>
>Score Rc7 even goes a bit lower at ply=17,
>i saw diep starting at ply 18,
>without getting a fail high for Rc6 at 17,
>so this move passes at 17 ply.
>
>Diep ran at a PII450 without much extensions. Most important to mention:
>diep ran without singular and without threat extensions and without any
>chance for double extensions.
>
>Allocated 79999984 bytes hashtables
>Permanent brain is on
> # move freq games  score*2 learn ==> huge cache
>       D I E P  2.00
>
>black timeleft=27:46.40.00
> - = - = - = r k   ...       1    ...
> = N = - = o = o   ...       2    ...
> - = - = - q - =   ...       3    ...
> = - = Q = - = -   ...       4    ...
> - = - o - = - =   ...       5    ...
> O O = n = o O O   ...       6    ...
> - = - = - O - =   ...       7    ...
> = - R - = - K -   ...       8    ...
>white timeleft=27:46.40.00
>white to move
>
> # move freq games  score*2 learn ==> game cache
>       D I E P  2.00
>clean
>Clearing all Hashtables...
>anal
>Analysis mode is on
>process 0: engineflags = 0 denktime=10000000 maxtime=10000000
>00:00 3 (0) 1 1.37 Rc1-c2
>00:00 5 (0) 1 1.55 Rc1-c7
>++ c1-c6
>00:00 190 (0) 1 1.65 Rc1-c6 Qf6-f4
>00:00 314 (0) 1 1.75 Rc1-d1
>00:00 556 (0) 2 1.51 Rc1-d1 Rg8-g5
>++ c1-c6
>00:00 628 (0) 2 1.65 Rc1-c6 Qf6-f4
>++ c1-c7
>00:00 838 (0) 2 1.78 Rc1-c7 Rg8-f8
>++ c1-c4
>00:00 1077 (0) 2 2.36 Rc1-c4 Nd3-f4 Qd5xd4 Nf4xh3 Kg1-f1
>00:00 1444 (0) 3 2.36 Rc1-c4 Nd3-f4 Qd5xd4 Nf4xh3 Kg1-f1
>++ c1-d1
>00:00 1952 (0) 3 2.39 Rc1-d1 Nd3-f4 Qd5xd4 Nf4xh3 Kg1-f1
>00:00 4163 (0) 4 1.71 Rc1-d1 Nd3-f4 Qd5xf3 Nf4xh3 Kg1-g2 Nh3-f4 Kg2-g1
>++ c1-c7
>00:00 13711 (0) 4 2.04 Rc1-c7 Qf6-f4 Qd5-d6 Nd3-e5
>++ c1-c6
>00:00 16260 (0) 4 2.19 Rc1-c6 Qf6-g7 Qd5xf3 Nd3-e5
>00:01 28689 (0) 5 2.93 Rc1-c6 Qf6-e5 Qd5xe5 Nd3xe5 Rc6-f6 Rg8-a8
>00:02 51503 (0) 6 3.23 Rc1-c6 Qf6-e5 Qd5xf3 Qe5-e1 Kg1-g2 Qe1-e8 Nb7-d6
>00:03 93692 (0) 7 3.29 Rc1-c6 Qf6-f4 Rc6-c8 Qf4-f6 Qd5-d6 Qf6xd6 Rc8xg8 Kh8xg8 N
>b7xd6
>00:05 146957 (0) 8 3.29 Rc1-c6 Qf6-f4 Rc6-c8 Qf4-f6 Qd5-d6 Qf6xd6 Rc8xg8 Kh8xg8
>Nb7xd6
>00:10 286220 (0) 9 3.28 Rc1-c6 Qf6-f4 Rc6-c8 Qf4-e5 Qd5xe5 Nd3xe5 Rc8xg8 Kh8xg8
>a3-a4 d4-d3 Kg1-f1
>00:50 1220520 (0) 10 3.26 Rc1-c6 Qf6-f4 Rc6-c8 Qf4-e5 Qd5xe5 Nd3xe5 Nb7-d6 d4-d3
> Rc8xg8 Kh8xg8 Nd6-e4 Kg8-f8
>02:51 4042531 (0) 11 3.27 Rc1-c6 Qf6-f4 Rc6-c8 Qf4-e5 Qd5xe5 Nd3xe5 Rc8xg8 Kh8xg
>8 Nb7-d6 d4-d3 Nd6-e4 Kg8-f8 Kg1-f1
>07:47 10847814 (0) 12 3.13 Rc1-c6 Qf6-f4 Rc6-c8 Qf4-e5 Qd5xe5 Nd3xe5 Rc8xg8 Kh8x
>g8 Nb7-d6 Kg8-f8 Kg1-f1 f7-f6 Nd6-f5 d4-d3
>17:15 24259356 (0) 13 3.13 Rc1-c6 Rg8-g5 Qd5-d8 Qf6xd8 Nb7xd8 Kh8-g7 Rc6-c7 Rg5-
>d5 Nd8xf7 Kg7-f6 Nf7-h8 Rd5-b5
>29:51 42116199 (0) 14 2.73 Rc1-c6 Rg8-g5 Qd5-d8 Qf6xd8 Nb7xd8 Kh8-g8 Rc6-f6 Nd3-
>c1 b3-b4 d4-d3 Kg1-f1 Rg5-d5 Nd8-c6
>01:12:41 102480667 (0) 15 2.53 Rc1-c6 Rg8-g5 Qd5-d8 Qf6xd8 Nb7xd8 Kh8-g8 Rc6-f6
>Nd3-c1 b3-b4 d4-d3 Rf6-d6 Rg5-g6 Nd8-b7
>++ c1-c7
>01:48:47 152996794 (0) 15 2.56 Rc1-c7 Nd3-f4 Qd5xf3 Nf4xh3 Kg1-g2 Nh3-f4 Kg2-f1
>Qf6-a6 Rc7-c4 Nf4-g6 Qf3-d5 f7-f6 Nb7-c5 Qa6xa3 Qd5xd4
>04:54:15 415236782 (0) 16 2.72 Rc1-c7 Nd3-f4 Qd5xf3 Nf4xh3 Kg1-g2 Qf6xf3 Kg2xf3
>Nh3-g5 Kf3-e2 Kh8-g7 Nb7-d6 Rg8-d8 Rc7-c6 f7-f6 Ke2-d3
>07:15:58 619248119 (0) 17 2.53 Rc1-c7 Nd3-f4 Qd5xf3 Nf4xh3 Kg1-g2 Qf6xf3 Kg2xf3
>Nh3-g5 Kf3-e2 Kh8-g7 Rc7-d7 Rg8-b8 b3-b4 Rb8-a8 Nb7-a5 Ng5-e6
>state


The reason I mentioned this move was on the day of the game, we had several
micros providing analysis.  None agreed with DB.  In 1997.



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