Author: Dann Corbit
Date: 15:07:37 12/04/03
Go up one level in this thread
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:
E:\crafty\release>crafty1
EPD Kit revision date: 1996.04.21
unable to open book file [./book.bin].
book is disabled
unable to open book file [./books.bin].
hash table memory = 48M bytes.
pawn hash table memory = 6M bytes.
EGTB cache memory = 32M bytes.
draw score set to 0.00 pawns.
book file enabled.
choose from book moves randomly (using weights.)
choose from 5 best moves.
book learning enabled
result learning enabled
position learning enabled
threshold set to 9 pawns.
5 piece tablebase files found
12693kb of RAM used for TB indices and decompression tables
Crafty v19.6
White(1): hash 256M
hash table memory = 192M bytes.
White(1): st 999
search time set to 999.00.
White(1): epdpfga wac230.epd wac230.out
PFGA: EPD record: 1 ID: WAC.230
end-game phase
clearing hash tables
time surplus 0.00 time limit 16:39 (16:39)
depth time score variation (1)
11 0.20 0.00 1. ... Bd7 2. Rxb3 Rxb3 3. Bf8 Rxc3+
4. Kh4 Bc8 5. Bg7 Bd7 6. Bh8 Bc8 7.
Kg4
11-> 0.25 0.00 1. ... Bd7 2. Rxb3 Rxb3 3. Bf8 Rxc3+
4. Kh4 Bc8 5. Bg7 Bd7 6. Bh8 Bc8 7.
Kg4
12 0.50 0.00 1. ... Bd7 2. Rxb3 Rxb3 3. Bf8 Rxc3+
4. Kh4 Bc8 5. Bg7 Bd7 6. Bh8 Bc8 7.
Kg4 Bd7
12-> 0.53 0.00 1. ... Bd7 2. Rxb3 Rxb3 3. Bf8 Rxc3+
4. Kh4 Bc8 5. Bg7 Bd7 6. Bh8 Bc8 7.
Kg4 Bd7
13 2.66 0.00 1. ... Bd7 2. f4 Bc8 3. Kh4 a4 4. Kg4
a3 5. Bxa3 Rh7 6. Re2 Bd7 7. f5 gxf5+
8. Kf4
13-> 2.73 0.00 1. ... Bd7 2. f4 Bc8 3. Kh4 a4 4. Kg4
a3 5. Bxa3 Rh7 6. Re2 Bd7 7. f5 gxf5+
8. Kf4
14 2.89 0.00 1. ... Bd7 2. f4 Bc8 3. Kh4 a4 4. Kg4
a3 5. Bxa3 Rh7 6. Re2 Bd7 7. f5 gxf5+
8. Kf4 b2 9. Bxb2
14-> 3.00 0.00 1. ... Bd7 2. f4 Bc8 3. Kh4 a4 4. Kg4
a3 5. Bxa3 Rh7 6. Re2 Bd7 7. f5 gxf5+
8. Kf4 b2 9. Bxb2
15 3.21 0.00 1. ... Bd7 2. f4 Bc8 3. Kh4 a4 4. Kg4
a3 5. Bxa3 Rh7 6. Re2 Bd7 7. f5 gxf5+
8. Kf4 b2 9. Bxb2 Bc8
15-> 3.74 0.00 1. ... Bd7 2. f4 Bc8 3. Kh4 a4 4. Kg4
a3 5. Bxa3 Rh7 6. Re2 Bd7 7. f5 gxf5+
8. Kf4 b2 9. Bxb2 Bc8
16 4.14 0.00 1. ... Bd7 2. f4 Bc8 3. Kh4 a4 4. Kg4
a3 5. Bxa3 Rh7 6. Re2 Bd7 7. f5 gxf5+
8. Kf4 b2 9. Bxb2 Bc8 10. Kg3
16-> 4.44 0.00 1. ... Bd7 2. f4 Bc8 3. Kh4 a4 4. Kg4
a3 5. Bxa3 Rh7 6. Re2 Bd7 7. f5 gxf5+
8. Kf4 b2 9. Bxb2 Bc8 10. Kg3
17 5.17 0.00 1. ... Bd7 2. f4 Bc8 3. Kh4 a4 4. Kg4
a3 5. Bxa3 Rh7 6. Re2 Bd7 7. f5 gxf5+
8. Kf4 b2 9. Bxb2 Bc8 10. Kg3 Kb5
17-> 11.17 0.00 1. ... Bd7 2. f4 Bc8 3. Kh4 a4 4. Kg4
a3 5. Bxa3 Rh7 6. Re2 Bd7 7. f5 gxf5+
8. Kf4 b2 9. Bxb2 Bc8 10. Kg3 Kb5
18 12.26 0.00 1. ... Bd7 2. f4 Bc8 3. Kh4 a4 4. Kg4
a3 5. Bxa3 Rh7 6. Re2 Bd7 7. f5 gxf5+
8. Kf4 b2 9. Bxb2 Bc8 10. Kg3 Kb5 11.
Kf4
18-> 15.74 0.00 1. ... Bd7 2. f4 Bc8 3. Kh4 a4 4. Kg4
a3 5. Bxa3 Rh7 6. Re2 Bd7 7. f5 gxf5+
8. Kf4 b2 9. Bxb2 Bc8 10. Kg3 Kb5 11.
Kf4
19 17.82 0.00 1. ... Bd7 2. f4 Bc8 3. Kh4 a4 4. Kg4
a3 5. Bxa3 Rh7 6. Re2 Bd7 7. f5 gxf5+
8. Kf4 b2 9. Bxb2 Bc8 10. Kg3 Kb5 11.
Kf4 Bd7
19-> 14:52 0.00 1. ... Bd7 2. f4 Bc8 3. Kh4 a4 4. Kg4
a3 5. Bxa3 Rh7 6. Re2 Bd7 7. f5 gxf5+
8. Kf4 b2 9. Bxb2 Bc8 10. Kg3 Kb5 11.
Kf4 Bd7
20 15:03 0.00 1. ... Bd7 2. f4 Bc8 3. Kh4 a4 4. Kg4
a3 5. Bxa3 Rh7 6. Re2 Bd7 7. f5 gxf5+
8. Kf4 b2 9. Bxb2 Bc8 10. Kg3 Kb5 11.
Kf4 Bd7 12. Re3
time=16:39 cpu=95% mat=-1 n=508073225 fh=78% nps=508k
ext-> chk=28122003 cap=722038 pp=5024244 1rep=1983148 mate=37444
predicted=0 nodes=508073225 evals=31123793
endgame tablebase-> probes=0 hits=0
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Last modified: Thu, 15 Apr 21 08:11:13 -0700
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