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

Author: Uri Blass

Date: 07:50:05 03/05/06

Go up one level in this thread


On March 05, 2006 at 09:37:25, Shaun Brewer wrote:

>On March 05, 2006 at 08:05:41, Uri Blass wrote:
>
>>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)
>
>Uri,
>
>I am getting different results?!?
>
>I have the hash set at 128mb if that makes any difference - I see you are using
>the same version as me and 32bit - the test within the Fritz interface is on an
>Athlon 1700+ overclocked a bit, the test with polyglot was run on an Intel Xeon
>3ghz

My hash was 512 mbytes but my point is that rybka shows no analysis at depth 31
because it has a very big branching factor so 15 minutes may not be enough to
get depth 31.

Maybe if you give it 24 hours it is going to get depth 31 without tablebases but
I do not plan to try.

It is possible that a program has huge branching factor(espacially at high
depth) and if you do not see more analysis it does not mean that there is a
search depth limit.

Uri



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