Author: Mike Byrne
Date: 16:54:54 10/17/02
Go up one level in this thread
On October 17, 2002 at 17:42:31, Robert Hyatt wrote:
>On October 17, 2002 at 06:21:33, Gian-Carlo Pascutto wrote:
>
>>On October 17, 2002 at 04:51:28, Christophe Drieu wrote:
>>
>>[D]8/8/8/p3k2p/P3p3/2P1KpPP/8/8 b - - 0 7
>>
>>Black draws this. The engines that play Rxf3 seem to give this
>>a big white plus score.
>>
>>The key is that although black can't catch both white pawns,
>>when capturing the c3 one, he can force the white king away
>>and promote one of his connected passers, apparently going into
>>a drawn queen endgame.
>>
>>--
>>GCP
>
>Mine is wrong here. The static evaluation is +.63. It jumps quite a bit, but
>then
>slowly settles back down to a draw. Crafty likes this because of some recent
>changes
>to the endgame code to better detect split vs connected passers...
>
>material evaluation................. 0.00
>development......................... 0.00
>pawn evaluation..................... -2.11
>passed pawn evaluation.............. 0.06
>passed pawn race evaluation......... 0.00
>king safety evaluation.............. 0.00
>interactive piece evaluation........ 2.68
>total evaluation.................... 0.63
>
>
> 1-> 0.01 0.63 1. ... Kd5
> 2 0.01 0.58 1. ... Kd5 2. Kf2
> 2-> 0.01 0.58 1. ... Kd5 2. Kf2
> 3 0.01 0.46 1. ... Kd5 2. Kf2 Kc4
> 3-> 0.01 0.46 1. ... Kd5 2. Kf2 Kc4
> 4 0.01 0.45 1. ... Kd5 2. g4 f2 3. Kxf2
> 4-> 0.02 0.45 1. ... Kd5 2. g4 f2 3. Kxf2
> 5 0.02 -- 1. ... Kd5
> 5 0.02 2.06 1. ... Kd5 2. g4 f2 3. Kxf2 e3+ 4.
> Kxe3
> 5 0.03 1.13 1. ... Kf6 2. c4 Ke5 3. c5 Kd5
> 5-> 0.03 1.13 1. ... Kf6 2. c4 Ke5 3. c5 Kd5 (s=2)
> 6 0.03 1.08 1. ... Kf6 2. Kf2 Kf5 3. c4 Ke5 4.
> c5
> 6 0.04 0.79 1. ... Kd5 2. g4 Kc4 3. gxh5 Kb3 4.
> h6 Kxa4 5. Kxe4
> 6-> 0.04 0.79 1. ... Kd5 2. g4 Kc4 3. gxh5 Kb3 4.
> h6 Kxa4 5. Kxe4 (s=2)
> 7 0.05 0.79 1. ... Kd5 2. g4 Kc4 3. gxh5 Kb3 4.
> h6 Kxa4 5. Kxe4
> 7-> 0.05 0.79 1. ... Kd5 2. g4 Kc4 3. gxh5 Kb3 4.
> h6 Kxa4 5. Kxe4 (s=2)
> 8 0.06 ++ 1. ... Kd5!!
> 8 0.08 -0.36 1. ... Kd5 2. g4 hxg4 3. hxg4 Kc4 4.
> g5 Kb3 5. g6 Kxa4 6. Kxe4
> 8-> 0.09 -0.36 1. ... Kd5 2. g4 hxg4 3. hxg4 Kc4 4.
> g5 Kb3 5. g6 Kxa4 6. Kxe4
> 9 0.10 -0.36 1. ... Kd5 2. g4 hxg4 3. hxg4 Kc4 4.
> g5 Kb3 5. g6 Kxa4 6. Kxe4
> 9-> 0.11 -0.36 1. ... Kd5 2. g4 hxg4 3. hxg4 Kc4 4.
> g5 Kb3 5. g6 Kxa4 6. Kxe4 (s=3)
> 10 0.12 -- 1. ... Kd5
> 10 0.14 2.07 1. ... Kd5 2. g4 hxg4 3. hxg4 Kd6 4.
> g5 Ke5 5. c4 Kf5 6. c5 Kxg5 (s=2)
> 10-> 0.18 2.07 1. ... Kd5 2. g4 hxg4 3. hxg4 Kd6 4.
> g5 Ke5 5. c4 Kf5 6. c5 Kxg5 (s=2)
> 11 0.21 2.07 1. ... Kd5 2. g4 hxg4 3. hxg4 Kd6 4.
> g5 Ke5 5. c4 Kf5 6. c5 Kxg5
> 11-> 0.26 2.07 1. ... Kd5 2. g4 hxg4 3. hxg4 Kd6 4.
> g5 Ke5 5. c4 Kf5 6. c5 Kxg5 (s=2)
> 12 0.28 -- 1. ... Kd5
> 12 0.34 2.90 1. ... Kd5 2. g4 hxg4 3. hxg4 Kd6 4.
> g5 Ke5 5. c4 Kf5 6. c5 Kxg5 7. c6
> 12-> 0.45 2.90 1. ... Kd5 2. g4 hxg4 3. hxg4 Kd6 4.
> g5 Ke5 5. c4 Kf5 6. c5 Kxg5 7. c6 (s=3)
> 13 0.54 2.90 1. ... Kd5 2. g4 hxg4 3. hxg4 Kd6 4.
> c4 Ke5 5. c5 Ke6 6. g5 Kf5 7. c6 Kxg5
> (s=2)
> 13 0.77 2.60 1. ... Kd6 2. g4 hxg4 3. hxg4 Kd5 4.
> g5 Ke6 5. c4 Kf5 6. c5 Kxg5 7. c6 <HT>
> 13-> 0.77 2.60 1. ... Kd6 2. g4 hxg4 3. hxg4 Kd5 4.
> g5 Ke6 5. c4 Kf5 6. c5 Kxg5 7. c6 <HT>
> (s=4)
> 14 0.86 -- 1. ... Kd6
> 14 1.03 3.79 1. ... Kd6 2. g4 hxg4 3. hxg4 Kd5 4.
> g5 Ke6 5. c4 Kd6 6. c5+ Kxc5 7. g6
> Kb4 8. g7 Kxa4 9. g8=Q <HT> (s=3)
> 14 1.21 ++ 1. ... Kd5!!
> 14 2.04 1.50 1. ... Kd5 2. g4 Kc4 3. gxh5 Kxc3 4.
> h6 f2 5. Kxf2 Kd2 6. h7 e3+ 7. Kf3
> e2 8. h8=Q e1=Q 9. Qd4+ Kc2 (s=2)
> 14-> 2.29 1.50 1. ... Kd5 2. g4 Kc4 3. gxh5 Kxc3 4.
> h6 f2 5. Kxf2 Kd2 6. h7 e3+ 7. Kf3
> e2 8. h8=Q e1=Q 9. Qd4+ Kc2
> 15 2.54 ++ 1. ... Kd5!!
======================================================================
hmmm....
Crafty 19.00 SE sees this as a draw...
White(2): 8/8/8/p3k2p/P3p3/2P1KpPP/8/8 b - - 0 7
Black(1): go
end-game phase
time surplus 0.00 time limit 100:00 (100:00)
depth time score variation (1)
4 0.00 ++ 1. ... Kf5!!
4 0.01 -2.03 1. ... Kf5 2. c4 Kf6 3. c5
4-> 0.01 -2.03 1. ... Kf5 2. c4 Kf6 3. c5
5 0.01 -- 1. ... Kf5
5 0.01 -2.23 1. ... Kf5 2. c4 Kg5 3. c5 Kf5 <HT>
5-> 0.01 -2.23 1. ... Kf5 2. c4 Kg5 3. c5 Kf5 <HT>
6 0.01 -- 1. ... Kf5
6 0.01 0.28 1. ... Kf5 2. c4 Kg5 3. g4 f2 4. Kxf2
hxg4 5. hxg4 Kxg4
6-> 0.03 0.28 1. ... Kf5 2. c4 Kg5 3. g4 f2 4. Kxf2
hxg4 5. hxg4 Kxg4
7 0.03 -- 1. ... Kf5
7 0.03 2.68 1. ... Kf5 2. c4 Kg5 3. c5 f2 4. Kxf2
Kf6 5. c6
7 0.04 ++ 1. ... Kd5!!
7 0.04 -0.53 1. ... Kd5 2. g4 hxg4 3. hxg4 Kc4 4.
g5 Kb3 5. g6 Kxa4 6. Kxe4
7-> 0.04 -0.53 1. ... Kd5 2. g4 hxg4 3. hxg4 Kc4 4.
g5 Kb3 5. g6 Kxa4 6. Kxe4 (s=3)
8 0.04 -0.53 1. ... Kd5 2. g4 hxg4 3. hxg4 Kc4 4.
g5 Kb3 5. g6 Kxa4 6. Kxe4 (s=2)
8-> 0.06 -0.53 1. ... Kd5 2. g4 hxg4 3. hxg4 Kc4 4.
g5 Kb3 5. g6 Kxa4 6. Kxe4
9 0.06 -0.53 1. ... Kd5 2. g4 hxg4 3. hxg4 Kc4 4.
g5 Kb3 5. g6 Kxa4 6. Kxe4
9-> 0.07 -0.53 1. ... Kd5 2. g4 hxg4 3. hxg4 Kc4 4.
g5 Kb3 5. g6 Kxa4 6. Kxe4
10 0.07 -- 1. ... Kd5
10 0.11 2.82 1. ... Kd5 2. g4 hxg4 3. hxg4 Ke6 4.
c4 Ke5 5. g5 Kf5 6. c5 Kxg5
10 0.17 2.48 1. ... Kf6 2. c4 Kf5 3. c5 Ke5 4. g4
hxg4 5. hxg4 Kd5 6. g5 Kxc5
10-> 0.17 2.48 1. ... Kf6 2. c4 Kf5 3. c5 Ke5 4. g4
hxg4 5. hxg4 Kd5 6. g5 Kxc5 (s=2)
11 0.23 2.81 1. ... Kf6 2. c4 Kg6 3. c5 Kf5 4. g4+
hxg4 5. hxg4+ Kxg4 6. c6 Kg3 7. Kd2
f2 8. Ke2
11-> 0.26 2.81 1. ... Kf6 2. c4 Kg6 3. c5 Kf5 4. g4+
hxg4 5. hxg4+ Kxg4 6. c6 Kg3 7. Kd2
f2 8. Ke2
12 0.34 2.68 1. ... Kf6 2. c4 Kg6 3. c5 Kf5 4. g4+
hxg4 5. c6 Ke6 6. hxg4 Kd6 7. g5 Kxc6
12-> 0.42 2.68 1. ... Kf6 2. c4 Kg6 3. c5 Kf5 4. g4+
hxg4 5. c6 Ke6 6. hxg4 Kd6 7. g5 Kxc6
13 0.50 -- 1. ... Kf6
13 0.70 3.61 1. ... Kf6 2. c4 Kg6 3. c5 Kf5 4. g4+
hxg4 5. c6 Ke6 6. hxg4 Kd6 7. g5 Kxc6
8. g6
13 1.11 ++ 1. ... Kd5!!
13 8.89 1.78 1. ... Kd5 2. g4 Kc4 3. gxh5 Kxc3 4.
h6 f2 5. Kxf2 Kd2 6. h7 e3+ 7. Kf3
e2 8. h8=Q e1=Q 9. Qd4+ Kc2 10. h4
13-> 8.93 1.78 1. ... Kd5 2. g4 Kc4 3. gxh5 Kxc3 4.
h6 f2 5. Kxf2 Kd2 6. h7 e3+ 7. Kf3
e2 8. h8=Q e1=Q 9. Qd4+ Kc2 10. h4
14 9.18 ++ 1. ... Kd5!!
14 9.82 -0.18 1. ... Kd5 2. g4 hxg4 3. hxg4 Kc4 4.
g5 Kxc3 5. g6 f2 6. Kxf2 Kd2 7. g7
e3+ 8. Kf3 e2 9. g8=Q e1=Q 10. Qd5+
Kc2
14-> 9.95 -0.18 1. ... Kd5 2. g4 hxg4 3. hxg4 Kc4 4.
g5 Kxc3 5. g6 f2 6. Kxf2 Kd2 7. g7
e3+ 8. Kf3 e2 9. g8=Q e1=Q 10. Qd5+
Kc2
15 10.25 -0.23 1. ... Kd5 2. g4 hxg4 3. hxg4 Kc4 4.
g5 Kxc3 5. g6 f2 6. Kxf2 Kd2 7. g7
e3+ 8. Kf3 e2 9. g8=Q e1=Q 10. Qd5+
Kc2 11. Kf4 Qd2+
15-> 10.43 -0.23 1. ... Kd5 2. g4 hxg4 3. hxg4 Kc4 4.
g5 Kxc3 5. g6 f2 6. Kxf2 Kd2 7. g7
e3+ 8. Kf3 e2 9. g8=Q e1=Q 10. Qd5+
Kc2 11. Kf4 Qd2+ (s=2)
16 11.17 -0.18 1. ... Kd5 2. g4 hxg4 3. hxg4 Kc4 4.
g5 Kxc3 5. g6 f2 6. Kxf2 Kd2 7. g7
e3+ 8. Kf3 e2 9. g8=Q e1=Q 10. Qd5+
Kc1 11. Qc6+ Kb2 12. Qb6+ Kc2 13. Qd4
16-> 11.59 -0.18 1. ... Kd5 2. g4 hxg4 3. hxg4 Kc4 4.
g5 Kxc3 5. g6 f2 6. Kxf2 Kd2 7. g7
e3+ 8. Kf3 e2 9. g8=Q e1=Q 10. Qd5+
Kc1 11. Qc6+ Kb2 12. Qb6+ Kc2 13. Qd4
(s=2)
17 13.54 -0.13 1. ... Kd5 2. g4 hxg4 3. hxg4 Kc4 4.
g5 Kxc3 5. g6 f2 6. Kxf2 Kd2 7. g7
e3+ 8. Kf3 e2 9. g8=Q e1=Q 10. Qd5+
Kc1 11. Qb5 Kc2 12. Kf4 Qd2+ 13. Ke5
17-> 14.29 -0.13 1. ... Kd5 2. g4 hxg4 3. hxg4 Kc4 4.
g5 Kxc3 5. g6 f2 6. Kxf2 Kd2 7. g7
e3+ 8. Kf3 e2 9. g8=Q e1=Q 10. Qd5+
Kc1 11. Qb5 Kc2 12. Kf4 Qd2+ 13. Ke5
18 16.71 -0.16 1. ... Kd5 2. g4 hxg4 3. hxg4 Kc4 4.
g5 Kxc3 5. g6 f2 6. Kxf2 Kd2 7. g7
e3+ 8. Kf3 e2 9. g8=Q e1=Q 10. Qd5+
Kc1 11. Qb5 Kc2 12. Kf4 Qc3 13. Ke4
Qc7
18-> 17.89 -0.16 1. ... Kd5 2. g4 hxg4 3. hxg4 Kc4 4.
g5 Kxc3 5. g6 f2 6. Kxf2 Kd2 7. g7
e3+ 8. Kf3 e2 9. g8=Q e1=Q 10. Qd5+
Kc1 11. Qb5 Kc2 12. Kf4 Qc3 13. Ke4
Qc7
19 25.21 -0.10 1. ... Kd5 2. g4 hxg4 3. hxg4 Kc4 4.
g5 Kxc3 5. g6 f2 6. Kxf2 Kd2 7. g7
e3+ 8. Kf3 e2 9. g8=Q e1=Q 10. Qd5+
Kc1 11. Qb5 Kc2 12. Kf4 Qb4+ 13. Ke5
Kc3 14. Kd5 Qd4+
19-> 27.96 -0.10 1. ... Kd5 2. g4 hxg4 3. hxg4 Kc4 4.
g5 Kxc3 5. g6 f2 6. Kxf2 Kd2 7. g7
e3+ 8. Kf3 e2 9. g8=Q e1=Q 10. Qd5+
Kc1 11. Qb5 Kc2 12. Kf4 Qb4+ 13. Ke5
Kc3 14. Kd5 Qd4+
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