Author: Dann Corbit
Date: 16:24:55 06/05/02
Go up one level in this thread
On June 05, 2002 at 10:27:28, Jon Dart wrote:
>Recently Arasan had this position in a game:
>
>[D] 8/8/1p5P/2b2P2/7K/8/1k6/8/ b - -
>
>Crafty evaluates this statically as won for White, which is correct. Arasan's
>pawn race code doesn't currently cover this case, although it would evaluate it
>correctly if there was no Black bishop, and it sees pretty quickly in the search
>what the situation is. But in the game, it exchanged into this lost position, as
>it couldn't search deep enough to see the consequences.
>
>I'm wondering how well other programs evaluate this.
Crafty with 5 piece tablebase files:
EPD Kit revision date: 1996.04.21
unable to open book file [e:\crafty\release/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.
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
19045kb of RAM used for TB indices and decompression tables
Crafty v18.15
White(1): hash 300M
hash table memory = 192M bytes.
White(1): st 999
search time set to 999.00.
White(1): setboard 8/8/1p5P/2b2P2/7K/8/1k6/8/ b - -
puzzling over a move to ponder.
end-game phase
clearing hash tables
nss depth time score variation (1)
7 0.80 0.20 1. ... Bd4 2. Kg5 Kc2 3. h7 Bh8 4.
f6 Kd3 5. f7 Bg7
7-> 1.10 0.20 1. ... Bd4 2. Kg5 Kc2 3. h7 Bh8 4.
f6 Kd3 5. f7 Bg7
8 1.31 -- 1. ... Bd4
8 1.36 3.86 1. ... Bd4 2. Kg5 b5 3. h7 Bh8 4. f6
Kb3 5. f7 Bg7 6. h8=Q Bxh8 7. f8=Q
8-> 1.54 3.86 1. ... Bd4 2. Kg5 b5 3. h7 Bh8 4. f6
Kb3 5. f7 Bg7 6. h8=Q Bxh8 7. f8=Q
9 1.71 -- 1. ... Bd4
9 1.93 5.02 1. ... Bd4 2. Kg5 b5 3. f6 b4 4. f7
Be3+ 5. Kg6 b3 6. h7 Kc2 7. h8=Q
9-> 3.28 5.02 1. ... Bd4 2. Kg5 b5 3. f6 b4 4. f7
Be3+ 5. Kg6 b3 6. h7 Kc2 7. h8=Q
10 3.52 -- 1. ... Bd4
10 3.72 5.56 1. ... Bd4 2. Kg5 b5 3. f6 b4 4. h7
b3 5. h8=Q Kb1 6. Qd8 Be5
10-> 4.73 5.56 1. ... Bd4 2. Kg5 b5 3. f6 b4 4. h7
b3 5. h8=Q Kb1 6. Qd8 Be5
11 5.51 5.63 1. ... Bd4 2. Kg5 b5 3. f6 b4 4. h7
b3 5. h8=Q Kb1 6. Qh1+ Kc2 7. Qc6+
Kd3 8. Kg6
11-> 7.60 5.63 1. ... Bd4 2. Kg5 b5 3. f6 b4 4. h7
b3 5. h8=Q Kb1 6. Qh1+ Kc2 7. Qc6+
Kd3 8. Kg6
12 8.20 -- 1. ... Bd4
12 8.75 6.60 1. ... Bd4 2. Kg5 b5 3. f6 b4 4. h7
b3 5. h8=Q Kc3 6. Qc8+ Kd2 7. f7 Be3+
8. Kf5 b2 9. f8=Q b1=Q+
12-> 11.78 6.60 1. ... Bd4 2. Kg5 b5 3. f6 b4 4. h7
b3 5. h8=Q Kc3 6. Qc8+ Kd2 7. f7 Be3+
8. Kf5 b2 9. f8=Q b1=Q+
13 13.00 6.70 1. ... Bd4 2. Kg5 b5 3. f6 b4 4. h7
b3 5. h8=Q Be3+ 6. Kg6 Kc2 7. f7 b2
8. f8=Q b1=Q 9. Kf5
13-> 18.65 6.70 1. ... Bd4 2. Kg5 b5 3. f6 b4 4. h7
b3 5. h8=Q Be3+ 6. Kg6 Kc2 7. f7 b2
8. f8=Q b1=Q 9. Kf5
14 20.23 -- 1. ... Bd4
14 22.68 8.27 1. ... Bd4 2. Kg5 b5 3. f6 b4 4. h7
b3 5. h8=Q Be3+ 6. Kg6 Bc5 7. f7+ Ka2
8. Qa8+ Kb2 9. f8=Q Bxf8 10. Qxf8
14-> 34.72 8.27 1. ... Bd4 2. Kg5 b5 3. f6 b4 4. h7
b3 5. h8=Q Be3+ 6. Kg6 Bc5 7. f7+ Ka2
8. Qa8+ Kb2 9. f8=Q Bxf8 10. Qxf8
15 41.05 -- 1. ... Bd4
15 1:17 9.07 1. ... Bd4 2. Kg5 Kc2 3. f6 Be3+ 4.
Kg6 Bc5 5. f7 Bf8 6. h7 Kb3 7. Kf5
Kc4 8. h8=Q Bc5 9. Qc8 Kd4 10. f8=Q
Bxf8 11. Qxf8
15 1:31 9.04 1. ... Be7+ 2. Kh5 b5 3. h7 Bf6 4.
Kg6 Bh8 5. f6 Kc2 6. f7 Kd3 7. f8=Q
Bc3 8. Qf1+ Ke3 9. Qh3+ Kd2 10. Qd7+
Ke1 11. Qe8+ Kd2 12. Qxb5
15-> 1:38 9.04 1. ... Be7+ 2. Kh5 b5 3. h7 Bf6 4.
Kg6 Bh8 5. f6 Kc2 6. f7 Kd3 7. f8=Q
Bc3 8. Qf1+ Ke3 9. Qh3+ Kd2 10. Qd7+
Ke1 11. Qe8+ Kd2 12. Qxb5
Black(1): Be7+ [pondering] 1/18* 1. ... Be7+
clearing hash tables
time surplus 0.00 time limit 16:39 (16:39)
nss depth time score variation (1)
8 0.95 6.21 2. Kh5 b5 3. Kg6 b4 4. f6 Bd6 5. h7
Kc3 6. h8=Q
8-> 1.01 6.21 2. Kh5 b5 3. Kg6 b4 4. f6 Bd6 5. h7
Kc3 6. h8=Q
9 1.02 -- 2. Kh5
9 1.16 5.96 2. Kh5 b5 3. Kg6 b4 4. h7 b3 5. h8=Q+
Ka2 6. f6 Ba3 7. Qa8
9-> 1.17 5.96 2. Kh5 b5 3. Kg6 b4 4. h7 b3 5. h8=Q+
Ka2 6. f6 Ba3 7. Qa8
10 1.58 6.35 2. Kh5 b5 3. h7 Bf6 4. Kg6 Be5 5. f6
Kc3 6. h8=Q b4 7. Qd8
10-> 1.60 6.35 2. Kh5 b5 3. h7 Bf6 4. Kg6 Be5 5. f6
Kc3 6. h8=Q b4 7. Qd8
11 2.00 ++ 2. Kh5!!
11-> 2.18 6.74 2. Kh5 b5 3. h7 Bf6 4. Kg6 Be5 5. f6
Kc3 6. h8=Q b4 7. Qd8
12 2.96 ++ 2. Kh5!!
12-> 3.70 7.13 2. Kh5 b5 3. h7 Bf6 4. Kg6 Be5 5. f6
Kc3 6. h8=Q b4 7. Qd8
13 4.77 ++ 2. Kh5!!
13 6.01 7.72 2. Kh5 b5 3. h7 Bf6 4. Kg6 Bh8 5. f6
b4 6. f7 b3 7. f8=Q Bd4 8. Kf7 Kc3
9. Qc8+ Kd3 10. h8=Q Bxh8 11. Qxh8
13-> 6.12 7.72 2. Kh5 b5 3. h7 Bf6 4. Kg6 Bh8 5. f6
b4 6. f7 b3 7. f8=Q Bd4 8. Kf7 Kc3
9. Qc8+ Kd3 10. h8=Q Bxh8 11. Qxh8
14 8.21 7.72 2. Kh5 b5 3. h7 Bf6 4. Kg6 Bh8 5. f6
b4 6. f7 b3 7. f8=Q Bd4 8. Kf7 Kc3
9. Qc8+ Kd3 10. h8=Q Bxh8 11. Qxh8
14-> 8.25 7.72 2. Kh5 b5 3. h7 Bf6 4. Kg6 Bh8 5. f6
b4 6. f7 b3 7. f8=Q Bd4 8. Kf7 Kc3
9. Qc8+ Kd3 10. h8=Q Bxh8 11. Qxh8
15 10.51 ++ 2. Kh5!!
15 24.20 13.01 2. Kh5 b5 3. h7 Bf6 4. Kg6 Bc3 5. f6
Kb1 6. h8=Q b4 7. f7 Kb2 8. f8=Q Kc2
9. Qc8 Kd3 10. Qhe8
15-> 24.42 13.01 2. Kh5 b5 3. h7 Bf6 4. Kg6 Bc3 5. f6
Kb1 6. h8=Q b4 7. f7 Kb2 8. f8=Q Kc2
9. Qc8 Kd3 10. Qhe8
16 34.99 ++ 2. Kh5!!
Yace:
white ( 1): setboard 8/8/1p5P/2b2P2/7K/8/1k6/8/ b - -
Stored 8 learned positions into hash table
black ( 1): go
usetime = 998.00, mintime = 998.00 maxtime = 998.00 tl 998.00 ml 0
1 0.009 2.33 1t 1...b5 {270}
22 0.010 2.33 1. 1...b5 {270}
75 0.010 1.90 2-- 1...b5 2.h7 Kc1 {270}
127 0.011 1.86 2t 1...b5 2.h7 Bd4 {270}
491 0.011 1.86 2. 1...b5 2.h7 Bd4 {270}
662 0.012 1.76 3t 1...b5 2.h7 Be7+ 3.Kg4 {270}
1802 0.014 1.76 3. 1...b5 2.h7 Be7+ 3.Kg4 {270}
2276 0.016 2.04 4t 1...b5 2.h7 Bd4 3.Kg5 b4 {270}
5368 0.021 2.04 4. 1...b5 2.h7 Bd4 3.Kg5 b4 {270}
6407 0.023 1.83 5t 1...b5 2.h7 Bd4 3.Kg5 b4 4.f6 {270}
12791 0.059 1.83 5. 1...b5 2.h7 Bd4 3.Kg5 b4 4.f6 {270}
19880 0.118 1.43 6-- 1...b5 2.f6 Ka2 3.h7 Bf2+ 4.Kh5 Bg3 {270}
21253 0.120 1.20 6t 1...b5 2.f6 Bd4 3.f7 Bc5 4.h7 Bf2+ 5.Kg5 {270}
25918 0.146 1.21 6t+ 1...Bd4 2.Kh3
31444 0.196 1.47 6t 1...Bd4 2.Kg4 b5 3.Kf4 b4H 4.Ke4H {270}
37741 0.204 1.47 6. 1...Bd4 2.Kg4 b5 3.Kf4 b4 4.Ke4 {270}
49310 0.336 0.99 7-- 1...Bd4 2.Kg5 Bc5 3.Kf6 Kc3 4.h7 Bd4+H 5.Kg5H
b5H 6.f6H Be3+H 7.Kf5H {270}
49642 0.338 0.99 7t 1...Bd4 2.Kg5 b5H 3.h7H Kc3H 4.f6H Be3+H 5.Kf5H
{270}
69950 0.714 0.99 7. 1...Bd4 2.Kg5 b5 3.h7 Kc3 4.f6 Be3+ 5.Kf5 {270}
85275 0.795 0.59 8-- 1...Bd4 2.Kg5 b5 3.h7 Ka1 4.f6 Be3+ 5.Kf5 Bg5
{270}
87842 0.806 -1.06 8-- 1...Bd4 2.Kg5 Kc3 3.h7 Be3+ 4.Kg6 b5 5.h8=Q+H
Bd4H 6.Qxd4+H Kxd4H {0}
94707 0.860 -2.85 8t 1...Bd4 2.Kg5 b5 3.h7 Be3+ 4.Kg6 Bd4H 5.f6H
Bxf6H 6.Kxf6H Kc3H {0}
128480 0.938 -2.85 8. 1...Bd4 2.Kg5 b5 3.h7 Be3+ 4.Kg6 Bd4 5.f6 Bxf6
6.Kxf6 Kc3 {0}
153356 1.235 -3.46 9-- 1...Bd4 2.Kg5 b5 3.h7 Be3+ 4.Kg6 Bd4 5.f6 Bxf6H
6.Kxf6H Kc3H {0}
157998 1.257 -4.75 9-- 1...Bd4 2.Kg5 Be3+ 3.Kg6 b5 4.h7 Bd4 5.f6 b4
6.h8=Q Bxf6H {-571}
198803 1.482 -6.06 9t 1...Bd4 2.Kg5 b5 3.f6 b4 4.h7 Kc2 5.h8=Q b3
6.Kf5 {-651}
264934 2.309 -6.06 9. 1...Bd4 2.Kg5 b5 3.f6 b4 4.h7 Kc2 5.h8=Q b3
6.Kf5 {-651}
332316 2.917 -6.26 10t 1...Bd4 2.Kg5 b5 3.f6 b4 4.f7 Kc2 5.f8=Q Be3+
6.Kf5 b3 {-651}
351001 3.032 -6.25 10t+ 1...b5 2.f6 b4 3.h7 b3 4.f7 Kc2 5.h8=Q Be7+
6.Kg4 b2 7.Kf4
440075 3.754 -6.16 10t 1...b5 2.f6 b4 3.h7 b3 4.f7 Kc2 5.h8=Q Be7+
6.Kg4 b2 7.Qh2+ Kc3 {-651}
587216 4.965 -6.16 10. 1...b5 2.f6 b4 3.h7 b3 4.f7 Kc2 5.h8=Q Be7+
6.Kg4 b2 7.Qh2+ Kc3 {-651}
768314 6.088 -6.56 11-- 1...b5 2.f6 b4 3.h7 b3 4.f7 Kc2 5.h8=Q b2 6.Qc8
b1=N 7.f8=Q Kb3 {-1312}
1155672 8.567 -7.56 11-- 1...b5 2.f6 b4 3.h7 b3 4.f7 Kc2 5.h8=Q b2 6.Qc8
b1=N 7.f8=Q Kd3 {-1312}
1313932 9.237 -7.58 11t 1...b5 2.f6 b4 3.h7 b3 4.f7 Ka2H 5.h8=NH {HT}
1314850 9.271 -7.56 11t+ 1...Bd4 2.Kg5
1442571 10.214 -6.60 11t 1...Bd4 2.Kg5 b5 3.f6 b4 4.h7 Kc2 5.f7 b3
6.f8=Q Be3+ 7.Kg6 b2 8.Qf5+ Kc1 {-651}
1840516 13.134 -6.60 11. 1...Bd4 2.Kg5 b5 3.f6 b4 4.h7 Kc2 5.f7 b3
6.f8=Q Be3+ 7.Kg6 b2 8.Qf5+ Kc1 {-651}
2006136 14.199 -6.60 12t 1...Bd4 2.Kg5 b5 3.f6 b4 4.h7 Kc2 5.f7 b3
6.f8=Q Be3+ 7.Kg6 b2 8.Qf5+ Kc1H 9.Qf1+H Kc2H
{-651}
2492000 16.523 -6.60 12. 1...Bd4 2.Kg5 b5 3.f6 b4 4.h7 Kc2 5.f7 b3
6.f8=Q Be3+ 7.Kg6 b2 8.Qf5+ Kc1 9.Qf1+ Kc2
{-651}
3082611 20.663 -6.70 13t 1...Bd4 2.Kg5 b5 3.f6 Kc2 4.f7 Be3+ 5.Kg6 b4
6.f8=Q b3 7.Qf5+ Kc3 8.h7 Bd4H {-651}
4053859 28.901 -6.70 13. 1...Bd4 2.Kg5 b5 3.f6 Kc2 4.f7 Be3+ 5.Kg6 b4
6.f8=Q b3 7.Qf5+ Kc3 8.h7 Bd4 {-651}
4934389 33.265 -7.10 14-- 1...Bd4 2.Kg5 b5 3.f6 Kc2 4.f7 Be3+ 5.Kh5 b4
6.f8=Q Kb3 7.h7 Ka2
6383102 37.235 -7.92 14t 1...Bd4 2.Kg5 b5 3.f6 Kc2 4.f7 Be3+ 5.Kh5 b4
6.f8=Q b3 7.Qf5+ Kc3 8.h7 Bd4 9.Qc8+H Kb2H
10.h8=QH {-1572}
8761927 51.513 -7.92 14. 1...Bd4 2.Kg5 b5 3.f6 Kc2 4.f7 Be3+ 5.Kh5 b4
6.f8=Q b3 7.Qf5+ Kc3 8.h7 Bd4 9.Qc8+ Kb2
10.h8=Q {-1572}
10106675 57.595 -8.32 15-- 1...Bd4 2.Kg5 b5 3.f6 Kc2 4.f7 Be3+ 5.Kh5 b4
6.h7 Kb3 7.h8=Q Bh6
13020803 1:09.4 -8.64 15t 1...Bd4 2.Kg5 b5 3.f6 Kc2 4.f7 b4 5.f8=Q b3
6.h7 b2 7.Qf5+ Kc3 8.Qf3+ Kc4 9.Qe4 b1=QH
10.Kg4H {HT}
16970664 1:46.6 -8.64 15. 1...Bd4 2.Kg5 b5 3.f6 Kc2 4.f7 b4 5.f8=Q b3
6.h7 b2 7.Qf5+ Kc3 8.Qf3+ Kc4 9.Qe4 b1=Q 10.Kg4
19913097 2:01.0 -9.04 16-- 1...Bd4 2.Kg5 b5 3.f6 Kc2 4.f7 b4 5.f8=Q b3
6.h7 b2 7.Qf5+ Kd2 8.Qd5 Kc3 9.Qxd4+ Kc2
22641639 2:09.6 -10.04 16-- 1...Bd4 2.Kg5 b5 3.f6 Kc2 4.f7 b4 5.f8=Q b3
6.h7 b2 7.Qf5+ Kd2 8.h8=Q Bf6+ 9.Qhxf6 Ke1
31079422 2:36.9 -14.78 16t 1...Bd4 2.Kg5 b5 3.f6 b4 4.f7 b3 5.f8=Q Ka2
6.Qa8+ Kb2 7.h7 Be3+ 8.Kh5 Bd4 9.Qf8 Kc3
10.h8=Q b2H 11.Qc5+H Kb3H 12.Qg8+H Ka4H {-1572}
39110433 3:37.9 -14.78 16. 1...Bd4 2.Kg5 b5 3.f6 b4 4.f7 b3 5.f8=Q Ka2
6.Qa8+ Kb2 7.h7 Be3+ 8.Kh5 Bd4 9.Qf8 Kc3
10.h8=Q b2 11.Qc5+ Kb3 12.Qg8+ Ka4 {-1572}
43247832 4:35.0 -15.18 17-- 1...Bd4 2.Kg5 b5 3.f6 b4 4.f7 b3 5.f8=Q Ka2
6.h7 Be3+ 7.Kh5 b2 8.Qb4 Ka1 9.h8=Q Bc5 10.Qxc5
Kb1
53828668 5:46.2 -16.18 17-- 1...Bd4 2.Kg5 b5 3.f6 b4 4.f7 b3 5.f8=Q Kc2
6.h7 Be3+ 7.Kh5 b2 8.h8=Q b1=B
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