Author: Jeremiah Penery
Date: 16:35:52 12/04/03
Go up one level in this thread
On December 04, 2003 at 18:07:37, Dann Corbit wrote:
>On December 03, 2003 at 23:50:42, Robert Hyatt wrote:
>
>>On December 03, 2003 at 20:42:57, Jeremiah Penery wrote:
>>
>>>On December 03, 2003 at 19:54:49, Robert Hyatt wrote:
>>>
>>>>On December 03, 2003 at 19:37:13, Jeremiah Penery wrote:
>>>>
>>>>>On December 03, 2003 at 16:22:27, Robert Hyatt wrote:
>>>>>
>>>>>>On December 03, 2003 at 15:54:45, Tord Romstad wrote:
>>>>>>
>>>>>>>On December 03, 2003 at 14:59:03, Robert Hyatt wrote:
>>>>>>>
>>>>>>>>=====================10 seconds per position========================
>>>>>>>>test results summary:
>>>>>>>>
>>>>>>>>total positions searched.......... 300
>>>>>>>>number right...................... 299
>>>>>>>
>>>>>>>That's really impressive, even considering the fast hardware. The last
>>>>>>>time I tried, I got 289/300 at 1 second/position, 293/300 at 3 seconds,
>>>>>>>294/300 at 5 seconds, 295/300 at 10 seconds, and 298/300 at 20 seconds.
>>>>>>>
>>>>>>>The remaining two positions, number 100 and 230, are *never* solved.
>>>>>>>I can let my program analyse for hours, but it still doesn't find
>>>>>>>the solutions. In both positions, it thinks it is winning, but
>>>>>>>never finds the right moves.
>>>>>>
>>>>>>I have gotten 230 in the past, but when I made some passed pawn changes of
>>>>>>some sort, it went away. But even back then it took several minutes to choose
>>>>>>the rook toss...
>>>>>
>>>>>If you compile with the #define DETECTDRAW it will find almost instantly that
>>>>>any move other than Rb4 is a blocked position draw. :)
>>>>
>>>>Have you tried it already? I'll give it a whirl tonight when I get home..
>>>>
>>>>Although the opteron seems to be down right now. They were installing a
>>>>firewall, so I might be dead until tomorrow.
>>>
>>>Yes, I wrote that code, remember? :)
>>
>>Yes I remembered. :) I was specifically talking about it with respect to
>>WAC 230. I remembered some results from some of those stupid positions
>>with the pawn locked where one side offers a rook that should not be
>>taken. :)
>>
>>I didn't know it also worked on wac 230.
>
>It detects the potential draw, but does not help to solve WAC.230:
It works fine for me:
Crafty v19.6
White(1): easy
pondering disabled.
White(1): epdlrec wac.epd 230
Black(1): analyze
Analyze Mode: type "exit" to terminate.
clearing hash tables
time surplus 0.00 time limit 22.50 (3:30)
depth time score variation (1)
1 0.00 -2.91 1. ... a4
1-> 0.00 -2.91 1. ... a47
2 0.00 -- 1. ... a4
2 0.00 -0.01 1. ... a4 2. Ba3
2-> 0.00 -0.01 1. ... a4 2. Ba3
3 0.01 -0.01 1. ... a4 2. Ba3 Bd7
3-> 0.01 -0.01 1. ... a4 2. Ba3 Bd7
4 0.01 -0.01 1. ... a4 2. Ba3 Bd7 3. Rb1
4 0.01 ++ 1. ... Kb5!!
4 0.01 -2.06 1. ... Kb5 2. Ba3 Ka4 3. Bc5
4-> 0.01 -2.06 1. ... Kb5 2. Ba3 Ka4 3. Bc5
5 0.02 -2.16 1. ... Kb5 2. Kf4 Rf7+ 3. Ke3 Rf5 4.
Be7
5-> 0.02 -2.16 1. ... Kb5 2. Kf4 Rf7+ 3. Ke3 Rf5 4.
Be7
6 0.02 -2.03 1. ... Kb5 2. Ba3 Ka4 3. Bc5 Rf7 4.
f3
6-> 0.03 -2.03 1. ... Kb5 2. Ba3 Ka4 3. Bc5 Rf7 4.
f3
7 0.04 -2.17 1. ... Kb5 2. Kf4 Rh7 3. f3 Rh4+ 4.
Kg3 Rh5 5. Kf4
7-> 0.05 -2.17 1. ... Kb5 2. Kf4 Rh7 3. f3 Rh4+ 4.
Kg3 Rh5 5. Kf4
8 0.09 -2.20 1. ... Kb5 2. f3 Rf7 3. Ba3 Ka4 4.
Bd6 Bd7 5. Bc5
8 0.16 -2.32 1. ... Rh7 2. Rb1 Rh5 3. Kg4 Kb5 4.
Ba3 Ka4 5. Bb2
8-> 0.17 -2.32 1. ... Rh7 2. Rb1 Rh5 3. Kg4 Kb5 4.
Ba3 Ka4 5. Bb2
9 0.21 -2.38 1. ... Rh7 2. Rb1 Rh5 3. Kg4 Kb5 4.
Rb2 Ka4 5. Kf4 Rh2
9-> 0.22 -2.38 1. ... Rh7 2. Rb1 Rh5 3. Kg4 Kb5 4.
Rb2 Ka4 5. Kf4 Rh2
10 0.29 -- 1. ... Rh7
10 0.33 -2.21 1. ... Rh7 2. Rb1 Rh5 3. Kg4 Kb5 4.
Ba3 Bd7 5. Kf4 Ka4 6. Bb2
10 0.53 -2.25 1. ... Kb5 2. Rb1 Rf7 3. Ba3 Bd7 4.
Rb2 Ka4 5. Bc5 Bc6 6. f3
10-> 0.54 -2.25 1. ... Kb5 2. Rb1 Rf7 3. Ba3 Bd7 4.
Rb2 Ka4 5. Bc5 Bc6 6. f3
11 0.71 -2.27 1. ... Kb5 2. Rb1 Rf7 3. Ba3 Rf5 4.
Kg4 Rxf2 5. Rb2 Ka4 6. Kg3 Kxa3 7.
Rxf2
11-> 0.81 -2.27 1. ... Kb5 2. Rb1 Rf7 3. Ba3 Rf5 4.
Kg4 Rxf2 5. Rb2 Ka4 6. Kg3 Kxa3 7.
Rxf2
12 1.04 -1.99 1. ... Kb5 2. Rb1 Rf7 3. Ba3 Rf5 4.
Kg4 Rxf2 5. Rb2 Ka4 6. Rxf2 Kxa3 7.
Kf4
12-> 1.24 -1.99 1. ... Kb5 2. Rb1 Rf7 3. Ba3 Rf5 4.
Kg4 Rxf2 5. Rb2 Ka4 6. Rxf2 Kxa3 7.
Kf4
13 1.62 -2.16 1. ... Kb5 2. Rb1 Rf7 3. Ba3 Rf5 4.
Kg4 Rxf2 5. Rb2 Ka4 6. Rxf2 Kxa3 7.
Kf4 Bd7
13-> 1.96 -2.16 1. ... Kb5 2. Rb1 Rf7 3. Ba3 Rf5 4.
Kg4 Rxf2 5. Rb2 Ka4 6. Rxf2 Kxa3 7.
Kf4 Bd7
14 2.45 -- 1. ... Kb5
14 2.73 -0.01 1. ... Kb5 2. Rb1 Rf7 3. Ba3 Rf5 4.
f4 Ka4 5. Bb2 Bd7 6. Ra1+ Kb5 7. Kg4
a4 8. Kh4 Rxf4+ 9. Kh3 a3
14 11.86 -1.18 1. ... Rb4 2. cxb4 a4 3. Rb1 c3 4.
Rc1 b2 5. b5+ Kxb5 6. Ba3 bxc1=Q 7.
Bxc1 Kc4 8. Be3 a3 9. Kf4 Kb3
14-> 12.04 -1.18 1. ... Rb4 2. cxb4 a4 3. Rb1 c3 4.
Rc1 b2 5. b5+ Kxb5 6. Ba3 bxc1=Q 7.
Bxc1 Kc4 8. Be3 a3 9. Kf4 Kb3
15 15.01 1/16? 1. ... Rb4
It performs identically in game mode.
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