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Subject: Re: deep blue test position game two 30. Bb6

Author: Vincent Diepeveen

Date: 06:34:15 09/12/01

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On September 12, 2001 at 00:59:24, K. Burcham wrote:

You're checking the position with programs without much
mobility i bet. Try DIEP. It needs 7 ply to find Bb6 and after
10 minutes it still has it.

00:01 0 0 10 (0) 1 0.156 a4xb5 a6xb5
00:01 0 0 19 (0) 1 0.345 Ng3-f5
00:01 0 0 110 (0) 2 0.126 Ng3-f5 a6-a5 Nf5xd6 Bf8xd6
++ a4-b5
00:01 0 0 187 (0) 2 0.156 a4xb5 a6xb5
++ e3-b6
00:01 0 0 567 (0) 2 0.257 Be3-b6 Qd8-e8 a4xb5 a6xb5
00:01 0 0 1060 (45) 3 0.340 Be3-b6 Qd8-g5 a4xb5 Bd7xb5
++ a4-b5
00:01 0 0 1408 (45) 3 0.540 a4xb5 a6xb5 Ng3-f5 Ra8xa3 Ra1xa3
00:01 0 0 4851 (45) 4 0.333 a4xb5 a6xb5 Ng3-f5 Bd7xf5 e4xf5 Ra8xa3 Ra1xa3
00:01 0 0 23576 (1617) 5 0.166 a4xb5 Nd6xb5 Ra3xa6 Ra8xa6 Ra1xa6 Nb5xc3
++ e3-b6
00:02 0 0 30176 (2200) 5 0.309 Be3-b6 Qd8-h4 Bb6-c5 Bf8-e7 a4xb5 Bd7xb5
++ a1-f1
00:02 0 0 49945 (5365) 5 0.413 Ra1-f1 Bf8-e7 Be3-c5 Qd8-f8 Bc5xd6 Be7xd6
++ a3-a2
00:02 0 0 70974 (5425) 5 0.495 Ra3-a2 Bf8-e7 a4xb5 a6xb5 Ng3-f5
++ e3-c5
00:03 0 0 105367 (10227) 5 0.537 Be3-c5 Qd8-e8 a4-a5 g7-g6 Ra1-f1
00:04 0 0 195222 (46954) 6 0.329 Be3-c5 Qd8-h4 Qf2-f3 Qh4-d8 Qf3-h5 f7-f6 a4xb5
a6xb5
00:13 0 0 847686 (194474) 7 0.223 Be3-c5 a6-a5 Bc5-b6 Qd8-h4 Bb6xa5 b5xa4 Ng3-f5

++ a3-a2
00:17 0 0 1204686 (238372) 7 0.462 Ra3-a2 Rc8-b8 a4xb5 a6xb5 Ra2-a7 Ra8xa7 Ra1xa
7
++ e3-b6
00:22 0 0 1619766 (339469) 7 0.472 Be3-b6 Qd8-g5 Ng3-f5 Nd6xf5 e4xf5 b5xa4 Ra1-e
1
00:46 0 0 4132292 (1233020) 8 0.354 Be3-b6 Qd8-e8 Ng3-f5 Bd7xf5 e4xf5 Bf8-e7 Ra1
-e1 Be7-f6 a4xb5 a6xb5
02:16 0 0 12580883 (2534809) 9 0.608 Be3-b6 Qd8-e8 a4-a5 Bf8-e7 Bb6-c5 g7-g6 Bc5
xd6 Be7xd6 Ra1-f1
08:13 0 0 52981385 (3994184) 10 0.414 Be3-b6 Qd8-e8 Ng3-f5 Nd6xf5 e4xf5 b5xa4 f5
-f6 g7xf6 Qf2xf6 Bf8-g7

I bet crafty also finds this as it has *some* sense of mobility.
The more sense a program has from mobility when talking about queens,
the sooner it will like Bb6 of course. May i also notice that diep likes
the Nf5 plan. Of course the 7 ply move after Qe8 is pretty stupid but it
goes away as you see.

>
>
>deep blue vs kasporov
>
>in this position shredder5 takes 17 minutes to find deep blues
>  30.Bb6.
>with 30.Bb6 the e pawn is allowed to capture at f5 with 34.exf5
>
> [D] r1rq1bk1/3b1pp1/p2n3p/1p1Pp3/PPp1P3/R1P1B1NP/2B2QP1/R5K1 w - -
>
>how long does it take your program to find the deep blue move?
>
>kburcham



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