Author: Albert Silver
Date: 06:53:49 01/11/06
Go up one level in this thread
On January 11, 2006 at 09:50:31, Derek wrote:
>I found a very odd occurence in this position. Rybka 1.0 Beta 32-bit prefers 70
>Kc6, while Rybka 1.0 Preview 32-bit prefers 70 Kc5. Which version is correct?
>More importantly, which version can be considered stronger? Has anyone else
>noticed differences in strength between the two of these?
How about the beta versions?
Albert
>
>
>
>
>On January 11, 2006 at 09:41:42, K. Burcham wrote:
>
>>
>>
>>With hash clear Rybka will not play blunder 70.Rb4
>>
>> [D] 8/8/8/1K4pk/3R3N/5N2/1q6/8 w - - 0 1
>>
>>Rybka 1.0 Beta 32-bit:
>>
>>70.Kc6
>> = (-0.20) Depth: 3 00:00:00
>>70.Kc6
>> ³ (-0.26) Depth: 4 00:00:00
>>70.Kc6 gxh4
>> ³ (-0.26) Depth: 5 00:00:00
>>70.Kc6 gxh4 71.Rxh4+ Kg6 72.Nd4
>> ³ (-0.26) Depth: 6 00:00:00 11kN
>>70.Kc6 gxh4 71.Rxh4+ Kg6 72.Nd4 Qc3+ 73.Kd7
>> ³ (-0.26) Depth: 7 00:00:00 25kN
>>70.Kc6 gxh4 71.Rxh4+ Kg6 72.Nd4 Qc3+ 73.Kd7 Qa5
>> ³ (-0.26) Depth: 8 00:00:00 50kN
>>70.Kc6 gxh4 71.Rxh4+ Kg6 72.Nd4 Qc3+ 73.Kd7 Qa5 74.Rg4+ Kh5
>> ³ (-0.26) Depth: 9 00:00:00 96kN
>>70.Kc6 gxh4 71.Rxh4+ Kg6 72.Nd4 Qc3+ 73.Kd7 Qa5 74.Rg4+ Kh5
>> ³ (-0.26) Depth: 10 00:00:01 220kN
>>70.Kc6 gxh4 71.Rxh4+ Kg6 72.Nd4 Qc3+ 73.Kd7 Qa5 74.Rg4+ Kh5
>> ³ (-0.26) Depth: 11 00:00:03 566kN
>>70.Kc6 gxh4 71.Rxh4+ Kg6 72.Nd4 Qc3+ 73.Kd7 Qa5 74.Rg4+ Kh5
>> ³ (-0.26) Depth: 12 00:00:05 886kN
>>70.Kc6 gxh4 71.Rxh4+ Kg6 72.Nd4 Qc3+ 73.Kd7 Qa5 74.Rg4+ Kh5
>> ³ (-0.26) Depth: 13 00:00:08 1485kN
>>70.Kc6 gxh4 71.Rxh4+ Kg6 72.Nd4 Qc3+ 73.Kd7 Qa5 74.Rg4+ Kh5
>> ³ (-0.26) Depth: 14 00:00:14 2566kN
>>70.Kc6 gxh4 71.Rxh4+ Kg6 72.Nd4 Qc3+ 73.Kd7 Qa5 74.Rg4+ Kh5
>> ³ (-0.26) Depth: 15 00:00:23 4536kN
>>70.Kc6 gxh4 71.Rxh4+ Kg6 72.Nd4 Qc3+ 73.Kd7 Qa5 74.Rg4+ Kh5
>> ³ (-0.26) Depth: 16 00:00:41 8244kN
>>70.Kc6 gxh4 71.Rxh4+ Kg6 72.Nd4 Qc3+ 73.Kd7 Qa5 74.Rg4+ Kh5
>> ³ (-0.26) Depth: 17 00:01:12 14588kN
>>70.Kc6 gxh4 71.Rxh4+ Kg6 72.Nd4 Qc3+ 73.Kd7 Qa5 74.Rg4+ Kh5
>> ³ (-0.26) Depth: 18 00:01:53 23521kN
>>
>>With full hash
>>
>>Rybka 1.0 Beta 32-bit:
>>
>>70.Rb4 Qa3
>> ³ (-0.26) Depth: 3 00:00:00
>>70.Rb4 Qa3
>> ³ (-0.26) Depth: 4 00:00:00
>>70.Rb4 Qa3
>> ³ (-0.26) Depth: 5 00:00:00
>>70.Rb4 Qc2 71.Rc4
>> ³ (-0.26) Depth: 6 00:00:00 1kN
>>70.Rb4 Qc2 71.Rc4 Qe2 72.Nxg5
>> ³ (-0.26) Depth: 7 00:00:00 2kN
>>70.Rb4 Qc2 71.Rc4 Qe2 72.Nxg5
>> ³ (-0.26) Depth: 8 00:00:00 4kN
>>70.Rb4 Qc2 71.Rc4 Qe2 72.Nxg5 Kxg5
>> ³ (-0.26) Depth: 9 00:00:00 10kN
>>70.Rb4 Qc2 71.Rc4 Qe2 72.Nxg5 Kxg5 73.Kc5
>> ³ (-0.26) Depth: 10 00:00:00 22kN
>>70.Rb4 Qc2 71.Rc4 Qe2 72.Nxg5 Kxg5 73.Kc5 Qe5+ 74.Kc6
>> ³ (-0.26) Depth: 11 00:00:01 49kN
>>70.Rb4 Qc2 71.Rc4 Qe2 72.Nxg5 Kxg5 73.Kc5 Qe5+ 74.Kc6 Qe8+
>> ³ (-0.26) Depth: 12 00:00:01 106kN
>>70.Rb4 Qc2 71.Rc4 Qe2 72.Nxg5 Kxg5 73.Kc5 Qe5+ 74.Kc6 Qe8+
>> ³ (-0.26) Depth: 13 00:00:01 270kN
>>70.Rb4 Qc2 71.Rc4 Qe2 72.Nxg5 Kxg5 73.Kc5 Qe5+ 74.Kc6 Qe8+
>> ³ (-0.26) Depth: 14 00:00:03 588kN
>>70.Rb4 Qc2 71.Rc4 Qe2 72.Nxg5 Kxg5 73.Kc5 Qe5+ 74.Kc6 Qe8+
>> ³ (-0.26) Depth: 15 00:00:06 1154kN
>>70.Rb4 Qc2 71.Rc4 Qe2 72.Nxg5 Kxg5 73.Kc5 Qe5+ 74.Kc6 Qe8+
>> ³ (-0.26) Depth: 16 00:00:12 2302kN
>>70.Rb4 Qc2 71.Rc4 Qe2 72.Nxg5 Kxg5 73.Kc5 Qe5+ 74.Kc6 Qe8+
>> ³ (-0.26) Depth: 17 00:00:24 4679kN
>>70.Rb4 Qc2 71.Rc4 Qe2 72.Nxg5 Kxg5 73.Kc5 Qe5+ 74.Kc6 Qe8+
>> ³ (-0.26) Depth: 18 00:00:55 10801kN
>>70.Rb4 Qc2 71.Rc4 Qe2 72.Nxg5 Kxg5 73.Kc5 Qe5+ 74.Kc6 Qe8+
>> ³ (-0.26) Depth: 19 00:02:18 26314kN
>>70.Rb4 Qc2 71.Rc4 Qe2 72.Nxg5 Kxg5 73.Kc5 Qe5+ 74.Kc6 Qe8+
>> ³ (-0.26) Depth: 20 00:04:46 54415kN
>>70.Rb4 Qc2 71.Rc4 Qe2 72.Nxg5 Kxg5 73.Kc5 Qe5+ 74.Kc6 Qe8+
>> ³ (-0.26) Depth: 21 00:09:18 105774kN
>>
>>kburcham
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