Author: Robert Hyatt
Date: 11:06:22 11/22/00
Go up one level in this thread
On November 22, 2000 at 12:32:47, Bruce Moreland wrote:
>On November 22, 2000 at 03:55:13, Jeremiah Penery wrote:
>
>>On November 22, 2000 at 00:02:34, Bruce Moreland wrote:
>>
>>>On November 21, 2000 at 20:24:31, Jeremiah Penery wrote:
>>>
>>>>On November 21, 2000 at 20:11:10, Bruce Moreland wrote:
>>>>
>>>>>What does Crafty think of the Reti study:
>>>>>
>>>>>[D]7K/8/k1P5/7p/8/8/8/8 w - - 0 1
>>>>>
>>>>>White to move draws. I might have this slightly wrong, because I'm constructing
>>>>>it from memory.
>>>>>
>>>>>bruce
>>>>
>>>>I get a drawscore at ply 9 from Crafty in this position.
>>>>
>>>>This is the last line I got:
>>>>
>>>>22-> 1:01 -0.50 1. Kg7 Kb6 2. Kf6 Kxc6 3. Kg5 h4 4.
>>>> Kxh4 Kc7 5. Kh5 Kb6 6. Kh6 Ka5 7. Kg6
>>>> Kb6 8. Kh5 Ka5 9. Kh6 Kb6 10. Kg6 Ka5
>>>> 11. Kh5 Kb6
>>>
>>>What interests me would be the scores prior to that ply, where Crafty things
>>>white is going to hit a home run.
>>>
>>>bruce
>
>> 7 0.19 -0.50 1. c7 Kb7 2. c8=Q+ Kxc8 3. Kh7 Kb7
>> 4. Kh6 Kc6 5. Kxh5
>> 7-> 0.21 -0.50 1. c7 Kb7 2. c8=Q+ Kxc8 3. Kh7 Kb7
>> 4. Kh6 Kc6 5. Kxh5
>
>>Crafty never thinks white is winning in this position.
>
>It should think black is winning, because black's pawn can't be stopped, but
>white's can. I snipped out a lot of the other lines here, but does anyone else
>think that the line I kept is completely ridiculous?
>
>Bob, what the heck is crafty doing there?
>
>bruce
There are several possible issues here. My PV may well be silly on the end.
When I get a hash hit, with an EXACT score, the PV is obviously cut short at
that point. Later, I try to probe the hash table to add more moves to the
end. And on occasion, those moves might not make any sense, and might not
even be part of the set of moves that leads to the score it gave...
Here is a non-egtb output from crafty (400mhz machine, one cpu):
time surplus 0.00 time limit 30.00 (3:00)
nss depth time score variation (1)
1 0.00 -3.50 1. Kg8
1-> 0.00 -3.50 1. Kg8
2 0.00 -- 1. Kg8
2 0.00 -3.91 1. Kg8 h4
2 0.00 ++ 1. c7!!
2 0.00 0.00 1. c7 Kb7 2. c8=Q+ Kxc8
2-> 0.00 0.00 1. c7 Kb7 2. c8=Q+ Kxc8
3 0.00 0.00 1. c7 Kb7 2. c8=Q+ Kxc8 3. Kg8
3-> 0.01 0.00 1. c7 Kb7 2. c8=Q+ Kxc8 3. Kg8
4 0.01 0.00 1. c7 Kb7 2. c8=Q+ Kxc8 3. Kh7 Kb7
4-> 0.01 0.00 1. c7 Kb7 2. c8=Q+ Kxc8 3. Kh7 Kb7
5 0.01 0.00 1. c7 Kb7 2. c8=Q+ Kxc8 3. Kh7 Kb7
4. Kg7
5-> 0.01 0.00 1. c7 Kb7 2. c8=Q+ Kxc8 3. Kh7 Kb7
4. Kg7
6 0.01 0.00 1. c7 Kb7 2. c8=Q+ Kxc8 3. Kh7 Kb7
4. Kh6 Kc6
6-> 0.01 0.00 1. c7 Kb7 2. c8=Q+ Kxc8 3. Kh7 Kb7
4. Kh6 Kc6
7 0.02 0.00 1. c7 Kb7 2. c8=Q+ Kxc8 3. Kh7 Kb7
4. Kh6 Kc6 5. Kxh5
7-> 0.02 0.00 1. c7 Kb7 2. c8=Q+ Kxc8 3. Kh7 Kb7
4. Kh6 Kc6 5. Kxh5
8 0.03 -- 1. c7
8 0.04 -4.51 1. c7 Kb7 2. Kg8 h4 3. Kf7 h3 4. Ke7
Kc8 5. Ke6
8 0.05 ++ 1. Kg7!!
8 0.06 0.00 1. Kg7 h4 2. Kf7 h3 3. Ke7 h2 4. c7
h1=Q 5. c8=Q+ Ka5 6. Kd8
(2) 8-> 0.06 0.00 1. Kg7 h4 2. Kf7 h3 3. Ke7 h2 4. c7
h1=Q 5. c8=Q+ Ka5 6. Kd8
9 0.09 -- 1. Kg7
9 0.12 -3.81 1. Kg7 h4 2. Kf6 Kb6 3. Ke5 h3 4. Kd6
Ka6 5. c7 Kb7
9-> 0.12 -3.81 1. Kg7 h4 2. Kf6 Kb6 3. Ke5 h3 4. Kd6
Ka6 5. c7 Kb7
10 0.14 ++ 1. Kg7!!
10 0.17 0.00 1. Kg7 h4 2. Kf6 h3 3. Ke6 h2 4. c7
h1=Q 5. c8=Q+ Ka5 6. Ke5 Ka4 7. Kf4
10-> 0.18 0.00 1. Kg7 h4 2. Kf6 h3 3. Ke6 h2 4. c7
h1=Q 5. c8=Q+ Ka5 6. Ke5 Ka4 7. Kf4
11 0.23 0.00 1. Kg7 h4 2. Kf6 h3 3. Ke6 h2 4. c7
h1=Q 5. c8=Q+ Ka5 6. Ke5 Ka4 7. Kf4
Ka3
11-> 0.23 0.00 1. Kg7 h4 2. Kf6 h3 3. Ke6 h2 4. c7
h1=Q 5. c8=Q+ Ka5 6. Ke5 Ka4 7. Kf4
Ka3
12 0.32 0.00 1. Kg7 h4 2. Kf6 h3 3. Ke6 h2 4. c7
h1=Q 5. c8=Q+ Ka5 6. Ke5 Ka4 7. Kf4
Ka3 8. Kg5
12-> 0.32 0.00 1. Kg7 h4 2. Kf6 h3 3. Ke6 h2 4. c7
h1=Q 5. c8=Q+ Ka5 6. Ke5 Ka4 7. Kf4
Ka3 8. Kg5
13 0.45 0.00 1. Kg7 h4 2. Kf6 h3 3. Ke6 h2 4. c7
h1=Q 5. c8=Q+ Ka5 6. Ke5 Ka4 7. Kf4
Ka3 8. Kg5 Ka2
13-> 0.45 0.00 1. Kg7 h4 2. Kf6 h3 3. Ke6 h2 4. c7
h1=Q 5. c8=Q+ Ka5 6. Ke5 Ka4 7. Kf4
Ka3 8. Kg5 Ka2
14 0.65 0.00 1. Kg7 h4 2. Kf6 h3 3. Ke6 h2 4. c7
h1=Q 5. c8=Q+ Ka5 6. Ke5 Ka4 7. Kf4
Ka3 8. Kg5 Ka2 9. Kf5
14-> 0.65 0.00 1. Kg7 h4 2. Kf6 h3 3. Ke6 h2 4. c7
h1=Q 5. c8=Q+ Ka5 6. Ke5 Ka4 7. Kf4
Ka3 8. Kg5 Ka2 9. Kf5
15 0.91 0.00 1. Kg7 h4 2. Kf6 h3 3. Ke6 h2 4. c7
h1=Q 5. c8=Q+ Ka5 6. Ke5 Ka4 7. Kf4
Ka3 8. Kg5 Ka2 9. Qd7 Ka1
15-> 0.91 0.00 1. Kg7 h4 2. Kf6 h3 3. Ke6 h2 4. c7
h1=Q 5. c8=Q+ Ka5 6. Ke5 Ka4 7. Kf4
Ka3 8. Kg5 Ka2 9. Qd7 Ka1
16 1.27 0.00 1. Kg7 h4 2. Kf6 h3 3. Ke6 h2 4. c7
h1=Q 5. c8=Q+ Ka5 6. Ke5 Ka4 7. Kf4
Ka3 8. Kg5 Ka2 9. Qd7 Ka1 10. Kf5
16-> 1.27 0.00 1. Kg7 h4 2. Kf6 h3 3. Ke6 h2 4. c7
h1=Q 5. c8=Q+ Ka5 6. Ke5 Ka4 7. Kf4
Ka3 8. Kg5 Ka2 9. Qd7 Ka1 10. Kf5
17 1.74 0.00 1. Kg7 h4 2. Kf6 h3 3. Ke6 h2 4. c7
h1=Q 5. c8=Q+ Ka5 6. Ke5 Ka4 7. Kf4
Ka3 8. Kg5 Ka2 9. Qd7 Ka1 10. Qe8 Qh3
17-> 1.74 0.00 1. Kg7 h4 2. Kf6 h3 3. Ke6 h2 4. c7
h1=Q 5. c8=Q+ Ka5 6. Ke5 Ka4 7. Kf4
Ka3 8. Kg5 Ka2 9. Qd7 Ka1 10. Qe8 Qh3
18 2.31 0.00 1. Kg7 h4 2. Kf6 h3 3. Ke6 h2 4. c7
h1=Q 5. c8=Q+ Ka5 6. Ke5 Ka4 7. Kf4
Ka3 8. Kg5 Ka2 9. Qd7 Ka1 10. Qe8 Qh3
11. Qf8
18-> 2.31 0.00 1. Kg7 h4 2. Kf6 h3 3. Ke6 h2 4. c7
h1=Q 5. c8=Q+ Ka5 6. Ke5 Ka4 7. Kf4
Ka3 8. Kg5 Ka2 9. Qd7 Ka1 10. Qe8 Qh3
11. Qf8
19 3.05 0.00 1. Kg7 h4 2. Kf6 h3 3. Ke6 h2 4. c7
h1=Q 5. c8=Q+ Ka5 6. Ke5 Ka4 7. Kf4
Ka3 8. Kg5 Ka2 9. Qd7 Ka1 10. Qe8 Qh3
11. Qf8 Qh2
19-> 3.05 0.00 1. Kg7 h4 2. Kf6 h3 3. Ke6 h2 4. c7
h1=Q 5. c8=Q+ Ka5 6. Ke5 Ka4 7. Kf4
Ka3 8. Kg5 Ka2 9. Qd7 Ka1 10. Qe8 Qh3
11. Qf8 Qh2
20 3.99 0.00 1. Kg7 h4 2. Kf6 h3 3. Ke6 h2 4. c7
h1=Q 5. c8=Q+ Ka5 6. Ke5 Ka4 7. Kf4
Ka3 8. Kg5 Ka2 9. Qd7 Ka1 10. Qe8 Qh3
11. Qf8 Qh2 12. Qg8
20-> 3.99 0.00 1. Kg7 h4 2. Kf6 h3 3. Ke6 h2 4. c7
h1=Q 5. c8=Q+ Ka5 6. Ke5 Ka4 7. Kf4
Ka3 8. Kg5 Ka2 9. Qd7 Ka1 10. Qe8 Qh3
11. Qf8 Qh2 12. Qg8
21 5.15 0.00 1. Kg7 h4 2. Kf6 h3 3. Ke6 h2 4. c7
h1=Q 5. c8=Q+ Ka5 6. Ke5 Ka4 7. Kf4
Ka3 8. Kg5 Ka2 9. Qd7 Ka1 10. Qe8 Qh3
11. Qf8 Qh2 12. Kg6 Qg1+ 13. Kh7
21-> 5.15 0.00 1. Kg7 h4 2. Kf6 h3 3. Ke6 h2 4. c7
h1=Q 5. c8=Q+ Ka5 6. Ke5 Ka4 7. Kf4
Ka3 8. Kg5 Ka2 9. Qd7 Ka1 10. Qe8 Qh3
11. Qf8 Qh2 12. Kg6 Qg1+ 13. Kh7
22 6.67 0.00 1. Kg7 h4 2. Kf6 h3 3. Ke6 h2 4. c7
h1=Q 5. c8=Q+ Ka5 6. Ke5 Ka4 7. Kf4
Ka3 8. Kg5 Ka2 9. Qd7 Ka1 10. Qe8 Qh3
11. Qf8 Qh2 12. Kg6 Qg1+ 13. Kh7 Ka2
22-> 6.67 0.00 1. Kg7 h4 2. Kf6 h3 3. Ke6 h2 4. c7
h1=Q 5. c8=Q+ Ka5 6. Ke5 Ka4 7. Kf4
Ka3 8. Kg5 Ka2 9. Qd7 Ka1 10. Qe8 Qh3
11. Qf8 Qh2 12. Kg6 Qg1+ 13. Kh7 Ka2
23 8.64 0.00 1. Kg7 h4 2. Kf6 h3 3. Ke6 h2 4. c7
h1=Q 5. c8=Q+ Ka5 6. Ke5 Ka4 7. Kf4
Ka3 8. Kg5 Ka2 9. Qd7 Ka1 10. Qe8 Qh3
11. Qf8 Qh2 12. Kg6 Qg1+ 13. Kh7 Ka2
14. Qg8+ Qxg8+ 15. Kxg8
23-> 8.64 0.00 1. Kg7 h4 2. Kf6 h3 3. Ke6 h2 4. c7
h1=Q 5. c8=Q+ Ka5 6. Ke5 Ka4 7. Kf4
Ka3 8. Kg5 Ka2 9. Qd7 Ka1 10. Qe8 Qh3
14. Qg8+ Qxg8+ 15. Kxg8
24 11.15 0.00 1. Kg7 h4 2. Kf6 h3 3. Ke6 h2 4. c7
h1=Q 5. c8=Q+ Ka5 6. Ke5 Ka4 7. Kf4
Ka3 8. Kg5 Ka2 9. Qd7 Ka1 10. Qe8 Qh3
11. Qf8 Qh2 12. Kg6 Qg1+ 13. Kh7 Ka2
14. Qg8+ Qxg8+ 15. Kxg8 Ka1
24-> 11.15 0.00 1. Kg7 h4 2. Kf6 h3 3. Ke6 h2 4. c7
h1=Q 5. c8=Q+ Ka5 6. Ke5 Ka4 7. Kf4
Ka3 8. Kg5 Ka2 9. Qd7 Ka1 10. Qe8 Qh3
11. Qf8 Qh2 12. Kg6 Qg1+ 13. Kh7 Ka2
14. Qg8+ Qxg8+ 15. Kxg8 Ka1
I didn't let it search any further as it seems to grasp this
just fine.
Now that I am "in the loop" did I miss your question? I'll try to back up
through the thread to see what was being discussed...
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