Author: Steffen Jakob
Date: 02:06:31 08/14/02
Go up one level in this thread
On August 14, 2002 at 03:22:54, Uri Blass wrote:
>On August 14, 2002 at 01:01:57, Slater Wold wrote:
>
>>White(1): setboard 8/8/3pR1P1/2k5/8/1p1b4/7K/8 b - - 0 67
>>Black(1): go
>>end-game phase
>> clearing hash tables
>> time surplus 0.00 time limit 3:00 (3:00)
>> nss depth time score variation (1)
>>starting thread 1
>> (4) 8-> 0.39 0.01 1. ... Bxg6 2. Rxg6 <HT>
>> (3) 9 0.48 0.01 1. ... Bxg6 2. Rxg6 <HT>
>> (4) 9-> 0.73 0.01 1. ... Bxg6 2. Rxg6 <HT>
>> (3) 10 0.97 0.01 1. ... Bxg6 2. Rxg6 <HT>
>> (4) 10-> 1.67 0.01 1. ... Bxg6 2. Rxg6 <HT>
>> (3) 11 1.70 0.01 1. ... Bxg6 2. Rxg6 <HT>
>> (4) 11-> 3.55 0.01 1. ... Bxg6 2. Rxg6 <HT>
>> (3) 12 3.55 0.01 1. ... Bxg6 2. Rxg6 <HT>
>> (4) 12-> 7.45 0.01 1. ... Bxg6 2. Rxg6 <HT>
>> (3) 13 7.53 0.01 1. ... Bxg6 2. Rxg6 <HT>
>> 13 21.12 ++ 1. ... b2!!
>> 13-> 2:49 -0.38 1. ... b26
>> time=3:00 cpu=307% mat=1 n=242037717 fh=94% nps=1342k
>> ext-> chk=29936339 cap=78644 pp=227271 1rep=1144737 mate=32723
>> predicted=0 nodes=242037717 evals=21110434
>> endgame tablebase-> probes done=239240 successful=53187
>> SMP-> split=778 stop=81 data=9/32 cpu=9:13 elap=3:00
>>
>>Black(1): b2
>> time used: 3:00
>>
>>#1 - You should see b2 wins pretty much immediatly. Sure, 21.12 seconds isn't
>>bad, but imagine this on a PIII 600! -0.38 isn't very convincing either.
>
>I disagree.
>
>seeing that b2 is winning is not an easy task for programs.
>
>Here is some analysis on p850
>with part of the tablebases(including KR vs KPP)
>
>Junior7 could not see it in a minute(I stopped it so I do not know if it is
>faster than Crafty) when Deep Fritz also needed time
>(faster than Crafty but Crafty is only an amateur)
>
>My crafty also needs depth 14 to find it under chessbase gui
>and I do not find that amateurs like Comet are better and
>at least CometB27 that is not very old
>could not find it in 3 minutes when Crafty could do it.
>>#3 - Any reason you can see why Crafty would take *forver* (even after this
>>move) to see the win?
>
>The win is not simple without the relevant knowledge
>that most programs do not have.
Hossa 1.150:
8 | | | | | | | | |
+---+---+---+---+---+---+---+---+ Black: Hossa v1.151 (C) 0
7 | | | | | | | | |
+---+---+---+---+---+---+---+---+ Black material: 5.21
6 | | | |=P=| R | | P | |
+---+---+---+---+---+---+---+---+
5 | | |=K=| | | | | |
+---+---+---+---+---+---+---+---+ Black to move
4 | | | | | | | | |
+---+---+---+---+---+---+---+---+ 8/8/3pR1P1/2k5/8/1p1b4/7K/8 b
3 | |=P=| |=B=| | | | |
+---+---+---+---+---+---+---+---+ White material: 6.07
2 | | | | | | | | K |
+---+---+---+---+---+---+---+---+ White: opponent 0
1 | | | | | | | | |
+---+---+---+---+---+---+---+---+
a b c d e f g h
3> analyze
1 +0.49 0.00 2 1... b2
<1> +0.49 0.00 21 1... b2
2 +0.14 0.01 132 1... b2 2.g7 d3h7
<2> +0.14 0.01 199 1... b2 2.g7 d3h7
3 +0.12 0.01 532 1... b2 2.g7 d3h7 3.e6e1
<3> +0.12 0.04 698 1... b2 2.g7 d3h7 3.e6e1
! 4 +0.54 0.05 1403 1... b2
! 4 +0.94 0.06 2563 1... b2 2.g7 d3h7 3.g7g8Q h7xg8
<4> +0.94 0.10 3432 1... b2 2.g7 d3h7 3.g7g8Q h7xg8
? 5 -0.01 0.48 11956 1... b2 2.g7 d3h7 3.e6e1 Kd4
4.Kg3
<5> -0.01 0.59 15162 1... b2 2.g7 d3h7 3.e6e1 Kd4
4.Kg3
! 6 +0.41 0.74 19660 1... b2
! 6 +1.20 0.80 25851 1... b2 2.g7 d3h7 3.e6e1 Kd4
4.g7g8Q h7xg8
<6> +1.20 0.87 29562 1... b2 2.g7 d3h7 3.e6e1 Kd4
4.g7g8Q h7xg8
7 +0.94 1.11 42373 1... b2 2.g7 d3h7 3.e6e1 Kd4
4.g7g8Q h7xg8 5.Kg3
<7> +0.94 1.54 58226 1... b2 2.g7 d3h7 3.e6e1 Kd4
4.g7g8Q h7xg8 5.Kg3
! 8 +1.36 2.24 93518 1... b2
! 8 +3.41 2.76 131545 1... b2 2.g7 d3h7 3.e6e1 Kd4
4.Kg3 Kc3 5.e1e3 Kd2 6.e3b3
<8> +3.41 2.84 135887 1... b2 2.g7 d3h7 3.e6e1 Kd4
4.Kg3 Kc3 5.e1e3 Kd2 6.e3b3
9 +3.09 6.26 297443 1... b2 2.g7 d3h7 3.e6e1 Kd4
4.Kg3 Kc3 5.Kf4 h7g8 6.Ke4
<9> +3.09 7.20 332571 1... b2 2.g7 d3h7 3.e6e1 Kd4
4.Kg3 Kc3 5.Kf4 h7g8 6.Ke4
10 +3.35 12.74 616931 1... b2 2.g7 d3h7 3.e6e1 Kd4
4.Kg3 Kc3 5.Kf4 Kc2 6.e1e2 Kb3
7.e2e3 Ka2
<10> +3.35 15.11 777543 1... b2 2.g7 d3h7 3.e6e1 Kd4
4.Kg3 Kc3 5.Kf4 Kc2 6.e1e2 Kb3
7.e2e3 Ka2
11 +3.35 40.31 2823617 1... b2 2.g7 d3h7 3.e6e1 Kd4
4.Kg3 Kc3 5.e1h1 h7g8 6.Kf4 Kc2
7.h1h2 Kc3
<11> +3.35 58.08 3751282 1... b2 2.g7 d3h7 3.e6e1 Kd4
4.Kg3 Kc3 5.e1h1 h7g8 6.Kf4 Kc2
7.h1h2 Kc3
Greetings,
Steffen.
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