Author: Uri Blass
Date: 01:40:48 12/11/02
Go up one level in this thread
On December 11, 2002 at 01:35:14, John Merlino wrote:
>On December 11, 2002 at 00:29:27, Mike S. wrote:
>
>>In this study, Black has either only one legal move (1st-7th), or there is only
>>one move which avoids immediate mate (8th/9th):
>>
>>Kok,T - [+3350.47g2b7]
>>td06 {v}, 1938
>>[D]qrb5/pk1p4/p2Pp3/p3Pp2/B4P2/1P6/5pK1/6B1 w - - 0 1
>>1.Kxf2 Kb6 2.Ke2+ Kb7 3.Ke3 Kb6 4.Kd3+ Kb7 5.Kd4 Kb6 6.Kc4+ Kb7 7.b4 axb4 8.Bd1
>>a5 9.Kb5 a6+ 10.Ka4 Qa7 11.Bf3# 1-0
>>
>>P3/700 MHz, 64 MB hash:
>>
>>Analysis by Goliath Light 1.5:
>>
>>1.Bxf2
>> -+ (-15.60) Depth: 6/8 00:00:00
>> -+ (-15.64) Depth: 7/9 00:00:00
>>1.Kxf2 Kb6 2.Ke2+ Kb7 3.Ke3
>> = (0.00) Depth: 7/10 00:00:00 1kN
>> +- (#11) Depth: 16/39 00:00:10 14218kN
>>
>>
>>Analysis by Nimzo 8:
>>
>>1.b4
>> -+ (-21.08) Depth: 1/11 00:00:00
>>1.Bc6+ Kxc6
>> -+ (-20.62) Depth: 1/11 00:00:00
>> -+ (-20.12) Depth: 1/11 00:00:00
>>1.Bh2
>> -+ (-17.59) Depth: 1/11 00:00:00
>> -+ (-17.59) Depth: 1/11 00:00:00
>>1.Bxf2
>> -+ (-14.96) Depth: 1/11 00:00:00
>> = (0.00) Depth: 16/34 00:00:03 991kN
>>1.Kxf2 Kb6 2.Ke2+ Kb7 3.Ke3 Kb6 4.Kd3+ Kb7 5.Kd4 Kb6 6.Kc4+
>> +- (#5) Depth: 16/34 00:00:03 991kN
>> +- (#9) Depth: 16/34 00:00:08 4346kN
>>
>>(Too small number of moves in the mate announcement is typical for N8, but the
>>pv is ok so far.)
>>
>>
>>Analysis by Yace 0.99.56:
>>
>>1.Bxf2
>> -+ (-11.79) Depth: 1 00:00:00
>> = (0.00) Depth: 16/28 00:00:04 2339kN
>>1.Kxf2 Kb6 2.Ke2+ Kb7 3.Ke3 Kb6 4.Kd3+ Kb7 5.Kd4 Kb6 6.Kc4+ Kb7 7.b4 axb4 8.Kxb4
>>a5+ 9.Kxa5 a6 10.Bd1 Qa7 11.Bf3#
>> +- (#11) Depth: 16/28 00:00:05 2753kN
>> +- (#11) Depth: 18/28 00:00:22 15212kN
>>
>>Perfect.
>>
>>Regards,
>>M.Scheidl
>
>Chessmaster 9000, on a P3-733, needs three seconds:
>
>Time Depth Score Positions Moves
>0:00 1/3 0.00 117 1.Bxf2
>0:00 1/4 0.00 258 1.Bxf2
>0:00 1/5 0.00 511 1.Bxf2
>0:00 1/6 0.00 979 1.Bxf2
>0:00 1/7 0.00 1678 1.Bxf2
>0:00 1/8 0.00 3990 1.Bxf2
>0:00 2/9 0.00 8010 1.Bxf2
>0:00 3/10 0.00 17187 1.Bxf2
>0:01 4/11 0.00 53954 1.Bxf2
>0:02 5/12 0.00 146573 1.Bxf2
>0:03 5/12 Mate11 292549 1.Kxf2 Kb6 2.Ke2+ Kb7 3.Ke3 Kb6
> 4.Kd3+ Kb7 5.Kd4 Kb6 6.Kc4+ Kb7
> 7.b4 axb4 8.Bd1 a5 9.Kb5 a6+ 10.Kxa5
> Kc6 11.Bf3#
>0:06 6/13 Mate11 794454 1.Kxf2 Kb6 2.Ke2+ Kb7 3.Ke3 Kb6
> 4.Kd3+ Kb7 5.Kd4 Kb6 6.Kc4+ Kb7
> 7.b4 axb4 8.Bd1 a5 9.Kb5 a6+ 10.Kxa5
> Kc6 11.Bf3#
>
>jm
It is clear that I have some bug with the latest movei
public movei solves it in 1 second when latest movei needs bigger depth and more
time inspite of having checks in the qsearch.
Here is the analysis by public movei
10 0 67 201470 g1f2
10 1 117 354473 g2f2
10 9979 138 418425 g2f2 b7b6 f2e2 b6b7 e2e3 b7b6 e3d3 b6b7 d3d4 b7b6 d4c4 b6b7
b3b4 a5b4 c4b4 a6a5 b4a5 a7a6 a4d1 a8a7 d1f3
10 9979 141 426072 g2f2 b7b6 f2e2 b6b7 e2e3 b7b6 e3d3 b6b7 d3d4 b7b6 d4c4 b6b7
b3b4 a5b4 c4b4 a6a5 b4a5 a7a6 a4d1 a8a7 d1f3
32817 <first : move g2f2
Uri
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