Author: Dann Corbit
Date: 23:55:29 03/09/01
Go up one level in this thread
On March 10, 2001 at 00:26:57, Michael Fuhrmann wrote:
>[D] 8/8/7P/5kP1/5P2/r7/5K2/8 b - - 0 114
>
>
>Crafty scores this as -3.26 for white on my computer, yet it seems to be a draw.
>I don't have all the 5-piece tbs. Is that the problem?
I have the complete 5 piece tablebase file set. It does not seem to help much.
However, it is clear that it is a draw. The output of the chase below is rather
amusing. We might call it "I'll get that f4 pawn if it's the last thing I do!"
Past the last actual search depth in plies, for each new search, it always ends
in Kxf4. But each time we go one more ply (when we have actually examined the
consequences of that horizon capture) it gets pushed out. It is clear that this
is a draw.
EPD Kit revision date: 1996.04.21
unable to open book file [e:\crafty\release/book.bin].
book is disabled
unable to open book file [e:\crafty\release/books.bin].
hash table memory = 192M bytes.
pawn hash table memory = 10M bytes.
EGTB cache memory = 64M 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.
6 piece tablebase files found
20899kb of RAM used for TB indices and decompression tables
Crafty v18.4
White(1):
White(1): st 172800
search time set to 172800.00.
White(1): setboard 8/8/7P/5kP1/5P2/r7/5K2/8 b - - 0 114
puzzling over a move to ponder.
end-game phase
clearing hash tables
nss depth time score variation (1)
7-> 0.82 -2.84 1. ... Rh3 2. Kg2 Rb3 3. Kf2 Ra3 4.
Kg2 Kxf4
8 0.95 -2.76 1. ... Rh3 2. Kg2 Rb3 3. Kf2 Rc3 4.
Kg2 Rc2+ 5. Kh3 Rc1 6. Kh4 Kxf4 <HT>
8-> 1.67 -2.76 1. ... Rh3 2. Kg2 Rb3 3. Kf2 Rc3 4.
Kg2 Rc2+ 5. Kh3 Rc1 6. Kh4 Kxf4 <HT>
9 1.76 -2.93 1. ... Rh3 2. Kg2 Rb3 3. Kf2 Rc3 4.
Kg2 Re3 5. Kh2 Kxf4
9-> 2.59 -2.93 1. ... Rh3 2. Kg2 Rb3 3. Kf2 Rc3 4.
Kg2 Re3 5. Kh2 Kxf4
10 2.81 -2.84 1. ... Rh3 2. Kg2 Rb3 3. Kf2 Rc3 4.
Kg2 Re3 5. Kh2 Ra3 6. Kg2 Kxf4
10-> 4.87 -2.84 1. ... Rh3 2. Kg2 Rb3 3. Kf2 Rc3 4.
Kg2 Re3 5. Kh2 Ra3 6. Kg2 Kxf4
11 5.19 -2.84 1. ... Rh3 2. Kg2 Rb3 3. Kf2 Rc3 4.
Kg2 Re3 5. Kf2 Ra3 6. Kg2 Kxf4 <HT>
11-> 7.58 -2.84 1. ... Rh3 2. Kg2 Rb3 3. Kf2 Rc3 4.
Kg2 Re3 5. Kf2 Ra3 6. Kg2 Kxf4 <HT>
12 8.35 -2.86 1. ... Rh3 2. Kg2 Rb3 3. Kf2 Rb2+ 4.
Kg3 Rb8 5. Kf3 Rb4 6. Kg3 Re4 7. Kh3
Rxf4
12-> 13.25 -2.86 1. ... Rh3 2. Kg2 Rb3 3. Kf2 Rb2+ 4.
Kg3 Rb8 5. Kf3 Rb4 6. Kg3 Re4 7. Kh3
Rxf4
13 15.14 -2.83 1. ... Rh3 2. Kg2 Rb3 3. Kf2 Rb2+ 4.
Kg3 Rb8 5. Kf3 Rb4 6. Kg3 Re4 7. Kh3
Re3+ 8. Kh4 Kxf4
13-> 22.74 -2.83 1. ... Rh3 2. Kg2 Rb3 3. Kf2 Rb2+ 4.
Kg3 Rb8 5. Kf3 Rb4 6. Kg3 Re4 7. Kh3
Re3+ 8. Kh4 Kxf4
14 24.01 -2.83 1. ... Rh3 2. Kg2 Rb3 3. Kf2 Rb2+ 4.
Kg3 Rb8 5. Kf3 Rb4 6. Kg3 Re4 7. Kh3
Re8 8. Kg3 Re3+ 9. Kh4 Kxf4
14-> 32.13 -2.83 1. ... Rh3 2. Kg2 Rb3 3. Kf2 Rb2+ 4.
Kg3 Rb8 5. Kf3 Rb4 6. Kg3 Re4 7. Kh3
Re8 8. Kg3 Re3+ 9. Kh4 Kxf4
15 33.89 -2.84 1. ... Rh3 2. Kg2 Rb3 3. Kf2 Rb2+ 4.
Kg3 Rb8 5. Kf3 Rb4 6. Kg3 Ra4 7. Kh3
Ra3+ 8. Kg2 Ra1 9. Kf2 Kxf4
15-> 45.53 -2.84 1. ... Rh3 2. Kg2 Rb3 3. Kf2 Rb2+ 4.
Kg3 Rb8 5. Kf3 Rb4 6. Kg3 Ra4 7. Kh3
Ra3+ 8. Kg2 Ra1 9. Kf2 Kxf4
16 48.44 -2.84 1. ... Rh3 2. Kg2 Rb3 3. Kf2 Rb2+ 4.
Kg3 Rb8 5. Kf3 Rb4 6. Kg3 Ra4 7. Kh3
Ra3+ 8. Kg2 Rc3 9. Kf2 Rb3 10. Kg2
Kxf4
16-> 1:03 -2.84 1. ... Rh3 2. Kg2 Rb3 3. Kf2 Rb2+ 4.
Kg3 Rb8 5. Kf3 Rb4 6. Kg3 Ra4 7. Kh3
Ra3+ 8. Kg2 Rc3 9. Kf2 Rb3 10. Kg2
Kxf4
17 1:06 -2.84 1. ... Rh3 2. Kg2 Rb3 3. Kf2 Rb2+ 4.
Kg3 Rb8 5. Kf3 Rb4 6. Kg3 Ra4 7. Kh3
Ra3+ 8. Kg2 Rc3 9. Kf2 Rb3 10. Kg2
Kxf4
17-> 1:27 -2.84 1. ... Rh3 2. Kg2 Rb3 3. Kf2 Rb2+ 4.
Kg3 Rb8 5. Kf3 Rb4 6. Kg3 Ra4 7. Kh3
Ra3+ 8. Kg2 Rc3 9. Kf2 Rb3 10. Kg2
Kxf4
18 1:33 -2.91 1. ... Rh3 2. Kg2 Rb3 3. Kf2 Rb2+ 4.
Kg3 Rb8 5. Kf3 Rb4 6. Kg3 Ra4 7. Kh3
Ra3+ 8. Kg2 Rc3 9. Kf2 Rb3 10. Ke2
Rh3 11. Kf2 Kxf4
18-> 2:01 -2.91 1. ... Rh3 2. Kg2 Rb3 3. Kf2 Rb2+ 4.
Kg3 Rb8 5. Kf3 Rb4 6. Kg3 Ra4 7. Kh3
Ra3+ 8. Kg2 Rc3 9. Kf2 Rb3 10. Ke2
Rh3 11. Kf2 Kxf4
19 2:12 -2.93 1. ... Rh3 2. Kg2 Rb3 3. Kf2 Rb2+ 4.
Kg3 Rb8 5. Kf3 Rb4 6. Kg3 Ra4 7. Kh3
Ra3+ 8. Kg2 Rc3 9. Kf2 Rb3 10. Kg2
Re3 11. Kh2 Kxf4
19-> 2:47 -2.93 1. ... Rh3 2. Kg2 Rb3 3. Kf2 Rb2+ 4.
Kg3 Rb8 5. Kf3 Rb4 6. Kg3 Ra4 7. Kh3
Ra3+ 8. Kg2 Rc3 9. Kf2 Rb3 10. Kg2
Re3 11. Kh2 Kxf4
20 3:50 -2.84 1. ... Rh3 2. Kg2 Rb3 3. Kf2 Rb2+ 4.
Kg3 Rb8 5. Kf3 Rb4 6. Kg3 Ra4 7. Kh3
Ra3+ 8. Kg2 Rc3 9. Kf2 Rb3 10. Kg2
Re3 11. Kf2 Ra3 12. Kg2 Kxf4
20-> 5:04 -2.84 1. ... Rh3 2. Kg2 Rb3 3. Kf2 Rb2+ 4.
Kg3 Rb8 5. Kf3 Rb4 6. Kg3 Ra4 7. Kh3
Ra3+ 8. Kg2 Rc3 9. Kf2 Rb3 10. Kg2
Re3 11. Kf2 Ra3 12. Kg2 Kxf4
21 5:15 -2.84 1. ... Rh3 2. Kg2 Rb3 3. Kf2 Rb2+ 4.
Kg3 Rb8 5. Kf3 Rb4 6. Kg3 Ra4 7. Kh3
Ra3+ 8. Kg2 Kg6 9. Kf2 Rh3 10. Kg2
Rb3 11. Kf2 Kf5 12. Kg2 Kxf4
21-> 6:06 -2.84 1. ... Rh3 2. Kg2 Rb3 3. Kf2 Rb2+ 4.
Kg3 Rb8 5. Kf3 Rb4 6. Kg3 Ra4 7. Kh3
Ra3+ 8. Kg2 Kg6 9. Kf2 Rh3 10. Kg2
Rb3 11. Kf2 Kf5 12. Kg2 Kxf4
22 6:17 -2.84 1. ... Rh3 2. Kg2 Rb3 3. Kf2 Rb2+ 4.
Kg3 Rb8 5. Kf3 Rb4 6. Kg3 Ra4 7. Kh3
Ra3+ 8. Kg2 Kg6 9. Kf2 Ra4 10. Kf3
Kf5 11. Kg3 Ra1 12. Kh2 Ra3 13. Kg2
Kxf4
22-> 7:45 -2.84 1. ... Rh3 2. Kg2 Rb3 3. Kf2 Rb2+ 4.
Kg3 Rb8 5. Kf3 Rb4 6. Kg3 Ra4 7. Kh3
Ra3+ 8. Kg2 Kg6 9. Kf2 Ra4 10. Kf3
Kf5 11. Kg3 Ra1 12. Kh2 Ra3 13. Kg2
Kxf4
23 7:58 -2.84 1. ... Rh3 2. Kg2 Rb3 3. Kf2 Rb2+ 4.
Kg3 Rb8 5. Kf3 Rb4 6. Kg3 Ra4 7. Kh3
Ra3+ 8. Kg2 Kg6 9. Kf2 Ra4 10. Kf3
Kf5 11. Kg3 Ra1 12. Kh2 Rb1 13. Kg2
Kxf4
23-> 9:46 -2.84 1. ... Rh3 2. Kg2 Rb3 3. Kf2 Rb2+ 4.
Kg3 Rb8 5. Kf3 Rb4 6. Kg3 Ra4 7. Kh3
Ra3+ 8. Kg2 Kg6 9. Kf2 Ra4 10. Kf3
Kf5 11. Kg3 Ra1 12. Kh2 Rb1 13. Kg2
Kxf4
24 10:24 -2.84 1. ... Rh3 2. Kg2 Rb3 3. Kf2 Rb2+ 4.
Kg3 Rb8 5. Kf3 Rb4 6. Kg3 Ra4 7. Kh3
Ra3+ 8. Kg2 Kg6 9. Kf2 Ra4 10. Kf3
Kf5 11. Kg3 Rb4 12. Kh3 Rb3+ 13. Kg2
Rb1 14. Kh2 Kxf4
24 10:30 2/19* 1. ... Ke6
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