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Subject: Re: Rybka absolute search depth 30ply ? No (Yes some positions?)

Author: Shaun Brewer

Date: 14:53:10 03/05/06

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In this position without TB's I think the answer is yes or at least something is
wrong?

If it takes 6 seconds to get to ply 30 I find it difficult to believe it can
take longer than 2 1/2 hours to get to ply 31 regardless of the branching
factor?

Shaun

[D] 8/8/1p6/pP3K1p/P7/6kP/8/8 w - - 0 1

2: EGP 0186, x
8/8/1p6/pP3K1p/P7/6kP/8/8 w - - 0 1

Analysis by Rybka 1.01 Beta 13d 32-bit:

1.h4 Kxh4 2.Kf4
  -+  (-1.44)   Depth: 3   00:00:00
1.h4 Kxh4 2.Kf4 Kh3 3.Kf3 h4 4.Kf2
  -+  (-1.56)   Depth: 10   00:00:00
1.h4 Kxh4 2.Kf4 Kh3 3.Kf3 h4 4.Kf2
  -+  (-1.56)   Depth: 10   00:00:00
1.h4 Kxh4 2.Kf4 Kh3 3.Kf3 h4 4.Kf2
  -+  (-1.56)   Depth: 10   00:00:00  5kN
1.h4 Kxh4 2.Kf4 Kh3 3.Kf3 h4 4.Kf2
  -+  (-1.56)   Depth: 10   00:00:00  5kN
1.h4 Kxh4 2.Kf4 Kh3 3.Kf3 h4 4.Kf2
  -+  (-1.56)   Depth: 10   00:00:00  5kN
1.h4 Kxh4 2.Kf4 Kh3 3.Kf3 h4 4.Kf2
  -+  (-1.56)   Depth: 10   00:00:00  5kN
1.h4 Kxh4 2.Kf4 Kh3 3.Kf3 h4 4.Kf2 Kh2
  -+  (-1.61)   Depth: 10   00:00:00  6kN
1.h4 Kxh4 2.Kf4 Kh3 3.Kf3 h4 4.Kf2 Kh2
  -+  (-1.80)   Depth: 11   00:00:00  9kN
1.Ke4 Kxh3 2.Kf3 h4 3.Kf2 Kh2 4.Kf1 Kg3
  -+  (-1.74)   Depth: 11   00:00:00  13kN
1.Ke4 Kxh3 2.Kf3 h4 3.Kf2 Kg4 4.Kg2 h3+ 5.Kg1 Kg5
  -+  (-1.61)   Depth: 12   00:00:00  20kN
1.Ke4 Kxh3 2.Kf3 h4 3.Kf2 Kg4 4.Kg2 h3+ 5.Kg1 Kg5 6.Kh1
  -+  (-1.80)   Depth: 13   00:00:00  26kN
1.Ke4 Kxh3 2.Kf3 h4 3.Kf2 Kg4 4.Kg2 h3+ 5.Kg1 Kg5 6.Kh1 Kh5
  -+  (-1.62)   Depth: 14   00:00:00  42kN
1.Ke4 Kxh3 2.Kf3 h4 3.Kf2 Kg4 4.Kg2 h3+ 5.Kg1 Kg5 6.Kf2 Kf4 7.Kg1 Kg5
  -+  (-1.56)   Depth: 15   00:00:00  56kN
1.Ke4 Kxh3 2.Kf3 h4 3.Kf2 Kg4 4.Kg2 h3+ 5.Kg1 Kg5 6.Kf2 Kf4 7.Kg1 Kg5
  ยต  (-1.13)   Depth: 16   00:00:01  114kN
1.Ke4 Kxh3 2.Kf3 h4 3.Kf2 Kg4 4.Kg2 Kf4 5.Kh3 Ke5 6.Kxh4 Kd5 7.Kg5 Kc4
  -+  (-2.01)   Depth: 17   00:00:01  173kN
1.Ke4 Kxh3 2.Kf3 h4 3.Kf2 Kg4 4.Kg2 Kf4 5.Kh3 Ke5 6.Kxh4 Kd5 7.Kg5 Kc4
  -+  (-2.01)   Depth: 18   00:00:01  196kN
1.Ke4 Kxh3 2.Kf3 h4 3.Kf2 Kg4 4.Kg2 Kf4 5.Kh3 Ke5 6.Kxh4 Kd5 7.Kg5 Kc4
  -+  (-2.07)   Depth: 19   00:00:02  213kN
1.Ke4 Kxh3 2.Kf3 h4 3.Kf2 Kg4 4.Kg2 Kf4 5.Kh3 Ke5 6.Kxh4 Kd5 7.Kg5 Kc4
  -+  (-2.26)   Depth: 20   00:00:02  237kN
1.Ke4 Kxh3 2.Kf3 h4 3.Kf2 Kg4 4.Kg2 Kf4 5.Kh3 Ke5 6.Kxh4 Kd5 7.Kg5 Kc4
  -+  (-2.32)   Depth: 21   00:00:02  262kN
1.Ke4 Kxh3 2.Kf3 h4 3.Kf2 Kg4 4.Kg2 Kf4 5.Kh3 Ke5 6.Kxh4 Kd5 7.Kg5 Kc4
  -+  (-2.55)   Depth: 22   00:00:03  298kN
1.Ke4 Kxh3 2.Kf3 h4 3.Kf2 Kg4 4.Kg2 Kf4 5.Kh3 Ke5 6.Kxh4 Kd5 7.Kg5 Kc4
  -+  (-2.57)   Depth: 23   00:00:03  338kN
1.Ke4 Kxh3 2.Kf3 h4 3.Kf2 Kg4 4.Kg2 Kf4 5.Kh3 Ke5 6.Kxh4 Kd5 7.Kg5 Kc4
  -+  (-2.68)   Depth: 24   00:00:03  385kN
1.Ke4 Kxh3 2.Kf3 h4 3.Kf2 Kg4 4.Kg2 Kf4 5.Kh3 Ke5 6.Kxh4 Kd5 7.Kg5 Kc4
  -+  (-2.81)   Depth: 25   00:00:04  454kN
1.Ke4 Kxh3 2.Kf3 h4 3.Kf2 Kg4 4.Kg2 Kf4 5.Kh3 Ke5 6.Kxh4 Kd5 7.Kg5 Kc4
  -+  (-2.98)   Depth: 26   00:00:04  532kN
1.Ke4 Kxh3 2.Kf3 h4 3.Kf2 Kg4 4.Kg2 Kf4 5.Kh3 Ke5 6.Kxh4 Kd5 7.Kg5 Kc4
  -+  (-3.08)   Depth: 27   00:00:04  631kN
1.Ke4 Kxh3 2.Kf3 h4 3.Kf2 Kg4 4.Kg2 Kf4 5.Kh3 Ke5 6.Kxh4 Kd5 7.Kg5 Kc4
  -+  (-3.14)   Depth: 28   00:00:05  752kN
1.Ke4 Kxh3 2.Kf3 h4 3.Kf2 Kg4 4.Kg2 Kf4 5.Kh3 Ke5 6.Kxh4 Kd5 7.Kg5 Kc4
  -+  (-3.33)   Depth: 29   00:00:05  907kN
1.Ke4 Kxh3 2.Kf3 h4 3.Kf2 Kg4 4.Kg2 Kf4 5.Kh3 Ke5 6.Kxh4 Kd5 7.Kg5 Kc4
  -+  (-3.39)   Depth: 30   00:00:06  1108kN

(Brewer, FB 05.03.2006)




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