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Subject: Re: Rybka absolute search depth 30ply ? No

Author: Uri Blass

Date: 05:05:41 03/05/06

Go up one level in this thread


On March 05, 2006 at 05:30:45, Shaun Brewer wrote:

>Rybka seems to have a 30ply absolute search limit when not using table bases?
>
>When using Polyglot to process test suites (without TB's) I have been setting
>minimum time - if Rybka gets to ply 30 before the minimum time the suite never
>finishes.
>
>I took 1 position and repeated the test in Fritz (renamed TB directory first) to
>ensure TB's not used.
>
>The same thing happened gets to Ply 30 then stops - see below.
>
>Is this known?
>
>Thanks
>
>Shaun
>
>
>8/8/1p6/pP3K1p/P7/6kP/8/8 w - - 0 1
>
>[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
>  -+  (-1.44)   Depth: 6   00:00:00
>1.h4 Kxh4 2.Kf4
>  -+  (-1.44)   Depth: 6   00:00:00
>1.h4 Kxh4 2.Kf4
>  -+  (-1.44)   Depth: 6   00:00:00  2kN
>1.h4 Kxh4 2.Kf4 Kh3
>  µ  (-1.37)   Depth: 7   00:00:00  2kN
>1.h4 Kxh4 2.Kf4 Kh3 3.Kf3 h4
>  -+  (-1.62)   Depth: 8   00:00:00  3kN
>1.h4 Kxh4 2.Kf4 Kh3 3.Kf3 h4 4.Kf2
>  -+  (-1.56)   Depth: 9   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
>  µ  (-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   00:00:05  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)

No

Rybka can show search depth of more than 30 plies

New game - Rybka 1.01 Beta 13d 32-bit
[D]k7/8/8/8/p1p1p1p1/PpPpPpPp/1P1P1P1P/K5B1 b - - 0 1

Analysis by Rybka 1.01 Beta 13d 32-bit:

1...Kb7
  +-  (2.68)   Depth: 3   00:00:00
1...Kb7
  +-  (2.74)   Depth: 4   00:00:00
1...Kb7 2.Kb1
  +-  (2.80)   Depth: 5   00:00:00
1...Kb7 2.Kb1 Kc6
  +-  (2.74)   Depth: 6   00:00:00
1...Kb7 2.Kb1 Kc6 3.Kc1
  +-  (2.80)   Depth: 7   00:00:00
1...Kb7 2.Kb1 Kc6 3.Kc1 Kd5
  +-  (2.62)   Depth: 8   00:00:00
1...Kb7 2.Kb1 Kc6 3.Kc1 Kd5 4.Kd1
  +-  (2.68)   Depth: 9   00:00:00  1kN
1...Kb7 2.Kb1 Kc6 3.Kc1 Kd5 4.Kd1 Ke5
  =  (0.00)   Depth: 10   00:00:00  1kN
1...Kb7 2.Kb1 Kc6 3.Kc1 Kd5 4.Kd1 Ke5 5.Ke1
  =  (0.00)   Depth: 11   00:00:00  1kN
1...Kb7 2.Kb1 Kc6 3.Kc1 Kd5 4.Kd1 Ke5 5.Ke1 Kd5
  =  (0.00)   Depth: 12   00:00:00  1kN
1...Kb7 2.Kb1 Kc6 3.Kc1 Kd5 4.Kd1 Ke5 5.Ke1 Kd5 6.Kf1
  =  (0.00)   Depth: 13   00:00:00  1kN
1...Kb7 2.Kb1 Kc6 3.Kc1 Kd5 4.Kd1 Ke5 5.Ke1 Kd5 6.Kf1 Ke5
  =  (0.00)   Depth: 14   00:00:00  1kN
1...Kb7 2.Kb1 Kc6 3.Kc1 Kd5 4.Kd1 Ke5 5.Ke1 Kd5 6.Kf1 Ke5 7.Ke1 Kd5 8.Kf1
  =  (0.00)   Depth: 15   00:00:00  2kN
1...Kb7 2.Kb1 Kc6 3.Kc1 Kd5 4.Kd1 Ke5 5.Ke1 Kd5 6.Kf1 Ke5 7.Ke1 Kd5 8.Kf1
  =  (0.00)   Depth: 16   00:00:00  2kN
1...Kb7 2.Kb1 Kc6 3.Kc1 Kd5 4.Kd1 Ke5 5.Ke1 Kd5 6.Kf1 Ke5 7.Ke1 Kd5 8.Kf1
  =  (0.00)   Depth: 17   00:00:00  2kN
1...Kb7 2.Kb1 Kc6 3.Kc1 Kd5 4.Kd1 Ke5 5.Ke1 Kd5 6.Kf1 Ke5 7.Ke1 Kd5 8.Kf1
  =  (0.00)   Depth: 18   00:00:00  3kN
1...Kb7 2.Kb1 Kc6 3.Kc1 Kd5 4.Kd1 Ke5 5.Ke1 Kd5 6.Kf1 Ke5 7.Ke1 Kd5 8.Kf1
  =  (0.00)   Depth: 19   00:00:00  3kN
1...Kb7 2.Kb1 Kc6 3.Kc1 Kd5 4.Kd1 Ke5 5.Ke1 Kd5 6.Kf1 Ke5 7.Ke1 Kd5 8.Kf1
  =  (0.00)   Depth: 20   00:00:00  4kN
1...Kb7 2.Kb1 Kc6 3.Kc1 Kd5 4.Kd1 Ke5 5.Ke1 Kd5 6.Kf1 Ke5 7.Ke1 Kd5 8.Kf1
  =  (0.00)   Depth: 21   00:00:00  4kN
1...Kb7 2.Kb1 Kc6 3.Kc1 Kd5 4.Kd1 Ke5 5.Ke1 Kd5 6.Kf1 Ke5 7.Ke1 Kd5 8.Kf1
  =  (0.00)   Depth: 22   00:00:00  5kN
1...Kb7 2.Kb1 Kc6 3.Kc1 Kd5 4.Kd1 Ke5 5.Ke1 Kd5 6.Kf1 Ke5 7.Ke1 Kd5 8.Kf1
  =  (0.00)   Depth: 23   00:00:00  6kN
1...Kb7 2.Kb1 Kc6 3.Kc1 Kd5 4.Kd1 Ke5 5.Ke1 Kd5 6.Kf1 Ke5 7.Ke1 Kd5 8.Kf1
  =  (0.00)   Depth: 24   00:00:00  7kN
1...Kb7 2.Kb1 Kc6 3.Kc1 Kd5 4.Kd1 Ke5 5.Ke1 Kd5 6.Kf1 Ke5 7.Ke1 Kd5 8.Kf1
  =  (0.00)   Depth: 25   00:00:00  7kN
1...Kb7 2.Kb1 Kc6 3.Kc1 Kd5 4.Kd1 Ke5 5.Ke1 Kd5 6.Kf1 Ke5 7.Ke1 Kd5 8.Kf1
  =  (0.00)   Depth: 26   00:00:00  8kN
1...Kb7 2.Kb1 Kc6 3.Kc1 Kd5 4.Kd1 Ke5 5.Ke1 Kd5 6.Kf1 Ke5 7.Ke1 Kd5 8.Kf1
  =  (0.00)   Depth: 27   00:00:00  9kN
1...Kb7 2.Kb1 Kc6 3.Kc1 Kd5 4.Kd1 Ke5 5.Ke1 Kd5 6.Kf1 Ke5 7.Ke1 Kd5 8.Kf1
  =  (0.00)   Depth: 28   00:00:00  10kN
1...Kb7 2.Kb1 Kc6 3.Kc1 Kd5 4.Kd1 Ke5 5.Ke1 Kd5 6.Kf1 Ke5 7.Ke1 Kd5 8.Kf1
  =  (0.00)   Depth: 29   00:00:00  12kN
1...Kb7 2.Kb1 Kc6 3.Kc1 Kd5 4.Kd1 Ke5 5.Ke1 Kd5 6.Kf1 Ke5 7.Ke1 Kd5 8.Kf1
  =  (0.00)   Depth: 30   00:00:00  13kN
1...Kb7 2.Kb1 Kc6 3.Kc1 Kd5 4.Kd1 Ke5 5.Ke1 Kd5 6.Kf1 Ke5 7.Ke1 Kd5 8.Kf1
  =  (0.00)   Depth: 31   00:00:00  14kN
1...Kb7 2.Kb1 Kc6 3.Kc1 Kd5 4.Kd1 Ke5 5.Ke1 Kd5 6.Kf1 Ke5 7.Ke1 Kd5 8.Kf1
  =  (0.00)   Depth: 32   00:00:00  16kN
1...Kb7 2.Kb1 Kc6 3.Kc1 Kd5 4.Kd1 Ke5 5.Ke1 Kd5 6.Kf1 Ke5 7.Ke1 Kd5 8.Kf1
  =  (0.00)   Depth: 33   00:00:00  17kN
1...Kb7 2.Kb1 Kc6 3.Kc1 Kd5 4.Kd1 Ke5 5.Ke1 Kd5 6.Kf1 Ke5 7.Ke1 Kd5 8.Kf1
  =  (0.00)   Depth: 34   00:00:00  19kN
1...Kb7 2.Kb1 Kc6 3.Kc1 Kd5 4.Kd1 Ke5 5.Ke1 Kd5 6.Kf1 Ke5 7.Ke1 Kd5 8.Kf1
  =  (0.00)   Depth: 35   00:00:00  20kN
1...Kb7 2.Kb1 Kc6 3.Kc1 Kd5 4.Kd1 Ke5 5.Ke1 Kd5 6.Kf1 Ke5 7.Ke1 Kd5 8.Kf1
  =  (0.00)   Depth: 36   00:00:00  21kN
1...Kb7 2.Kb1 Kc6 3.Kc1 Kd5 4.Kd1 Ke5 5.Ke1 Kd5 6.Kf1 Ke5 7.Ke1 Kd5 8.Kf1
  =  (0.00)   Depth: 37   00:00:00  23kN
1...Kb7 2.Kb1 Kc6 3.Kc1 Kd5 4.Kd1 Ke5 5.Ke1 Kd5 6.Kf1 Ke5 7.Ke1 Kd5 8.Kf1
  =  (0.00)   Depth: 38   00:00:00  24kN
1...Kb7 2.Kb1 Kc6 3.Kc1 Kd5 4.Kd1 Ke5 5.Ke1 Kd5 6.Kf1 Ke5 7.Ke1 Kd5 8.Kf1
  =  (0.00)   Depth: 39   00:00:00  25kN
1...Kb7 2.Kb1 Kc6 3.Kc1 Kd5 4.Kd1 Ke5 5.Ke1 Kd5 6.Kf1 Ke5 7.Ke1 Kd5 8.Kf1
  =  (0.00)   Depth: 40   00:00:00  26kN
1...Kb7 2.Kb1 Kc6 3.Kc1 Kd5 4.Kd1 Ke5 5.Ke1 Kd5 6.Kf1 Ke5 7.Ke1 Kd5 8.Kf1
  =  (0.00)   Depth: 41   00:00:00  27kN
1...Kb7 2.Kb1 Kc6 3.Kc1 Kd5 4.Kd1 Ke5 5.Ke1 Kd5 6.Kf1 Ke5 7.Ke1 Kd5 8.Kf1
  =  (0.00)   Depth: 42   00:00:00  28kN
1...Kb7 2.Kb1 Kc6 3.Kc1 Kd5 4.Kd1 Ke5 5.Ke1 Kd5 6.Kf1 Ke5 7.Ke1 Kd5 8.Kf1
  =  (0.00)   Depth: 43   00:00:00  30kN
1...Kb7 2.Kb1 Kc6 3.Kc1 Kd5 4.Kd1 Ke5 5.Ke1 Kd5 6.Kf1 Ke5 7.Ke1 Kd5 8.Kf1
  =  (0.00)   Depth: 44   00:00:00  30kN
1...Kb7 2.Kb1 Kc6 3.Kc1 Kd5 4.Kd1 Ke5 5.Ke1 Kd5 6.Kf1 Ke5 7.Ke1 Kd5 8.Kf1
  =  (0.00)   Depth: 45   00:00:00  31kN
1...Kb7 2.Kb1 Kc6 3.Kc1 Kd5 4.Kd1 Ke5 5.Ke1 Kd5 6.Kf1 Ke5 7.Ke1 Kd5 8.Kf1
  =  (0.00)   Depth: 46   00:00:00  32kN
1...Kb7 2.Kb1 Kc6 3.Kc1 Kd5 4.Kd1 Ke5 5.Ke1 Kd5 6.Kf1 Ke5 7.Ke1 Kd5 8.Kf1
  =  (0.00)   Depth: 47   00:00:00  33kN
1...Kb7 2.Kb1 Kc6 3.Kc1 Kd5 4.Kd1 Ke5 5.Ke1 Kd5 6.Kf1 Ke5 7.Ke1 Kd5 8.Kf1
  =  (0.00)   Depth: 48   00:00:00  34kN
1...Kb7 2.Kb1 Kc6 3.Kc1 Kd5 4.Kd1 Ke5 5.Ke1 Kd5 6.Kf1 Ke5 7.Ke1 Kd5 8.Kf1
  =  (0.00)   Depth: 49   00:00:00  35kN
1...Kb7 2.Kb1 Kc6 3.Kc1 Kd5 4.Kd1 Ke5 5.Ke1 Kd5 6.Kf1 Ke5 7.Ke1 Kd5 8.Kf1
  =  (0.00)   Depth: 50   00:00:00  36kN
1...Kb7 2.Kb1 Kc6 3.Kc1 Kd5 4.Kd1 Ke5 5.Ke1 Kd5 6.Kf1 Ke5 7.Ke1 Kd5 8.Kf1
  =  (0.00)   Depth: 51   00:00:00  37kN
1...Kb7 2.Kb1 Kc6 3.Kc1 Kd5 4.Kd1 Ke5 5.Ke1 Kd5 6.Kf1 Ke5 7.Ke1 Kd5 8.Kf1
  =  (0.00)   Depth: 52   00:00:00  38kN
1...Kb7 2.Kb1 Kc6 3.Kc1 Kd5 4.Kd1 Ke5 5.Ke1 Kd5 6.Kf1 Ke5 7.Ke1 Kd5 8.Kf1
  =  (0.00)   Depth: 53   00:00:00  39kN
1...Kb7 2.Kb1 Kc6 3.Kc1 Kd5 4.Kd1 Ke5 5.Ke1 Kd5 6.Kf1 Ke5 7.Ke1 Kd5 8.Kf1
  =  (0.00)   Depth: 54   00:00:01  40kN
1...Kb7 2.Kb1 Kc6 3.Kc1 Kd5 4.Kd1 Ke5 5.Ke1 Kd5 6.Kf1 Ke5 7.Ke1 Kd5 8.Kf1
  =  (0.00)   Depth: 55   00:00:01  42kN
1...Kb7 2.Kb1 Kc6 3.Kc1 Kd5 4.Kd1 Ke5 5.Ke1 Kd5 6.Kf1 Ke5 7.Ke1 Kd5 8.Kf1
  =  (0.00)   Depth: 56   00:00:01  43kN
1...Kb7 2.Kb1 Kc6 3.Kc1 Kd5 4.Kd1 Ke5 5.Ke1 Kd5 6.Kf1 Ke5 7.Ke1 Kd5 8.Kf1
  =  (0.00)   Depth: 57   00:00:01  44kN
1...Kb7 2.Kb1 Kc6 3.Kc1 Kd5 4.Kd1 Ke5 5.Ke1 Kd5 6.Kf1 Ke5 7.Ke1 Kd5 8.Kf1
  =  (0.00)   Depth: 58   00:00:01  45kN
1...Kb7 2.Kb1 Kc6 3.Kc1 Kd5 4.Kd1 Ke5 5.Ke1 Kd5 6.Kf1 Ke5 7.Ke1 Kd5 8.Kf1
  =  (0.00)   Depth: 59   00:00:01  46kN
1...Kb7 2.Kb1 Kc6 3.Kc1 Kd5 4.Kd1 Ke5 5.Ke1 Kd5 6.Kf1 Ke5 7.Ke1 Kd5 8.Kf1
  =  (0.00)   Depth: 60   00:00:01  48kN
1...Kb7 2.Kb1 Kc6 3.Kc1 Kd5 4.Kd1 Ke5 5.Ke1 Kd5 6.Kf1 Ke5 7.Ke1 Kd5 8.Kf1
  =  (0.00)   Depth: 61   00:00:01  49kN
1...Kb7 2.Kb1 Kc6 3.Kc1 Kd5 4.Kd1 Ke5 5.Ke1 Kd5 6.Kf1 Ke5 7.Ke1 Kd5 8.Kf1
  =  (0.00)   Depth: 62   00:00:01  50kN
1...Kb7 2.Kb1 Kc6 3.Kc1 Kd5 4.Kd1 Ke5 5.Ke1 Kd5 6.Kf1 Ke5 7.Ke1 Kd5 8.Kf1
  =  (0.00)   Depth: 63   00:00:01  52kN
1...Kb7 2.Kb1 Kc6 3.Kc1 Kd5 4.Kd1 Ke5 5.Ke1 Kd5 6.Kf1 Ke5 7.Ke1 Kd5 8.Kf1
  =  (0.00)   Depth: 64   00:00:01  54kN
1...Kb7 2.Kb1 Kc6 3.Kc1 Kd5 4.Kd1 Ke5 5.Ke1 Kd5 6.Kf1 Ke5 7.Ke1 Kd5 8.Kf1
  =  (0.00)   Depth: 65   00:00:01  55kN
1...Kb7 2.Kb1 Kc6 3.Kc1 Kd5 4.Kd1 Ke5 5.Ke1 Kd5 6.Kf1 Ke5 7.Ke1 Kd5 8.Kf1
  =  (0.00)   Depth: 66   00:00:01  57kN
1...Kb7 2.Kb1 Kc6 3.Kc1 Kd5 4.Kd1 Ke5 5.Ke1 Kd5 6.Kf1 Ke5 7.Ke1 Kd5 8.Kf1
  =  (0.00)   Depth: 67   00:00:01  58kN
1...Kb7 2.Kb1 Kc6 3.Kc1 Kd5 4.Kd1 Ke5 5.Ke1 Kd5 6.Kf1 Ke5 7.Ke1 Kd5 8.Kf1
  =  (0.00)   Depth: 68   00:00:01  59kN
1...Kb7 2.Kb1 Kc6 3.Kc1 Kd5 4.Kd1 Ke5 5.Ke1 Kd5 6.Kf1 Ke5 7.Ke1 Kd5 8.Kf1
  =  (0.00)   Depth: 69   00:00:01  61kN

(,  05.03.2006)

Even in the relevant position with tablebases it has no problem to get depth 31.

Maybe it has a huge branching factor at depth 31 with no tablebases because the
task manager tells me that rybka continue to work inspite of no output at depth
31

analysis with tablebases:

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

Analysis by Rybka 1.01 Beta 13d 32-bit:

1.h4
  ³  (-0.58)   Depth: 3   00:00:00
1.h4
  µ  (-0.88)   Depth: 4   00:00:00
1.h4 Kxh4
  µ  (-0.94)   Depth: 5   00:00:00
1.h4 Kxh4 2.Kf4
  -+  (-1.44)   Depth: 6   00:00:00  2kN
1.h4 Kxh4 2.Kf4 Kh3
  µ  (-1.37)   Depth: 7   00:00:00  2kN
1.h4 Kxh4 2.Kf4 Kh3 3.Kf3 h4
  -+  (-1.62)   Depth: 8   00:00:00  3kN
1.h4 Kxh4 2.Kf4 Kh3 3.Kf3 h4 4.Kf2
  -+  (-1.56)   Depth: 9   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, tb=1
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, tb=1
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, tb=9
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, tb=13
1.Ke4 Kxh3 2.Kf3 h4 3.Kf2 Kg4 4.Kg2 h3+ 5.Kg1 Kg5 6.Kf2 Kf4 7.Kg1 Kg5
  µ  (-1.13)   Depth: 16   00:00:00  114kN, tb=17
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   00:00:00  172kN, tb=29
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   00:00:00  194kN, tb=34
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   00:00:00  210kN, tb=49
1.Ke4 Kxh3 2.Ke5 h4 3.Kd5 Kg2 4.Kc6 h3 5.Kxb6 h2 6.Ka7 h1Q 7.b6 Qa1
  -+  (-9.29)   Depth: 20   00:00:05  355kN, tb=1189
1.Ke4 Kxh3 2.Ke5 h4 3.Kd5 Kg2 4.Kc6 h3 5.Kxb6 h2 6.Ka7 h1Q 7.b6 Qa1
  -+  (-9.29)   Depth: 21   00:00:06  403kN, tb=1650
1.Ke4 Kxh3 2.Ke5 h4 3.Kd5 Kg2 4.Kc6 h3 5.Kxb6 h2 6.Ka7 h1Q 7.b6 Qa1
  -+  (-9.29)   Depth: 22   00:00:08  459kN, tb=2140
1.Ke4 Kxh3 2.Ke5 h4 3.Kd5 Kg2 4.Kc6 h3 5.Kxb6 h2 6.Ka7 h1Q 7.b6 Qa1
  -+  (-9.29)   Depth: 23   00:00:09  514kN, tb=2658
1.Ke4 Kxh3 2.Ke5 h4 3.Kd5 Kg2 4.Kc6 h3 5.Kxb6 h2 6.Ka7 h1Q 7.b6 Qa1
  -+  (-9.29)   Depth: 24   00:00:10  587kN, tb=3408
1.Ke4 Kxh3 2.Kd5 h4 3.Kc6 Kg2 4.Kxb6 h3 5.Ka7 h2 6.b6 h1Q 7.b7 Qh7
  -+  (-9.29)   Depth: 25   00:00:23  1122kN, tb=13358
1.Ke4 Kxh3 2.Kd5 h4 3.Kc6 Kg2 4.Kxb6 h3 5.Ka7 h2 6.b6 h1Q 7.b7 Qh7
  -+  (-9.29)   Depth: 26   00:00:25  1189kN, tb=13721
1.Ke4 Kxh3 2.Kd5 h4 3.Kc6 Kg2 4.Kxb6 h3 5.Ka7 h2 6.b6 h1Q 7.b7 Qh7
  -+  (-9.29)   Depth: 27   00:00:27  1272kN, tb=14307
1.Ke4 Kxh3 2.Kd5 h4 3.Kc6 Kg2 4.Kxb6 h3 5.Ka7 h2 6.b6 h1Q 7.b7 Qh7
  -+  (-9.29)   Depth: 28   00:00:33  1423kN, tb=14935
1.Ke4 Kxh3 2.Kd5 h4 3.Kc6 Kg2 4.Kxb6 h3 5.Ka7 h2 6.b6 h1Q 7.b7 Qh7
  -+  (-9.29)   Depth: 29   00:00:49  1830kN, tb=15902
1.Ke4 Kxh3 2.Kd5 h4 3.Kc6 Kg2 4.Kxb6 h3 5.Ka7 h2 6.b6 h1Q 7.b7 Qh7
  -+  (-9.29)   Depth: 30   00:01:41  5373kN, tb=17101
1.Ke4 Kxh3 2.Kd5 h4 3.Kc6 Kg2 4.Kxb6 h3 5.Ka7 h2 6.b6 h1Q 7.b7 Qh7
  -+  (-9.29)   Depth: 31   00:04:02  16286kN, tb=18591

(,  05.03.2006)






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