Author: Jeremiah Penery
Date: 18:34:52 09/17/99
Remember those "Rock Pile" positions you posted quite a while back? I guess a
couple were solved, but most weren't. I have succeeded in making Crafty find
another solution. The position is:
3B4/1r2p3/r2p1p2/bkp1P1p1/1p1P1PPp/p1P1K2P/PPB5/8 w - -
+---+---+---+---+---+---+---+---+
8 | | | | B | | | | |
+---+---+---+---+---+---+---+---+
7 | | *R| | | *P| | | |
+---+---+---+---+---+---+---+---+
6 | *R| | | *P| | *P| | |
+---+---+---+---+---+---+---+---+
5 | *B| *K| *P| | P | | *P| |
+---+---+---+---+---+---+---+---+
4 | | *P| | P | | P | P | *P|
+---+---+---+---+---+---+---+---+
3 | *P| | P | | K | | | P |
+---+---+---+---+---+---+---+---+
2 | P | P | B | | | | | |
+---+---+---+---+---+---+---+---+
1 | | | | | | | | |
+---+---+---+---+---+---+---+---+
a b c d e f g h
Here is the analysis:
White(1): analyze
Analyze Mode: type "exit" to terminate.
end-game phase
clearing hash tables
time surplus 0.00 time limit 30.00 (3:00) [easy move]
nss depth time score variation (1)
7-> 0.80 -1.22 1. Ba4+ Kxa4 2. b3+ Kb5 3. c4+ Kc6
4. d5+ Kd7 5. e6+ Kxd8 6. f5 Rc6 7.
Kf3 Kc7 8. Ke2
8 1.05 -1.33 1. Ba4+ Kxa4 2. b3+ Kb5 3. c4+ Kc6
4. d5+ Kd7 5. e6+ Kxd8 6. f5 Rc6 7.
Kf3 Kc7 8. Ke2 Rb5
8-> 1.88 -1.33 1. Ba4+ Kxa4 2. b3+ Kb5 3. c4+ Kc6
4. d5+ Kd7 5. e6+ Kxd8 6. f5 Rc6 7.
Kf3 Kc7 8. Ke2 Rb5
9 2.56 -1.30 1. Ba4+ Kxa4 2. b3+ Kb5 3. c4+ Kc6
4. d5+ Kd7 5. e6+ Kxd8 6. f5 Rc6 7.
Kf3 Rb5 8. Ke3 Bb6 9. Ke4
9-> 3.86 -1.30 1. Ba4+ Kxa4 2. b3+ Kb5 3. c4+ Kc6
4. d5+ Kd7 5. e6+ Kxd8 6. f5 Rc6 7.
Kf3 Rb5 8. Ke3 Bb6 9. Ke4
10 5.09 -1.39 1. Ba4+ Kxa4 2. b3+ Kb5 3. c4+ Kc6
4. d5+ Kd7 5. e6+ Kxd8 6. f5 Rc6 7.
Kf3 Rb5 8. Ke3 Bb6 9. Ke4 Kc7
10-> 9.21 -1.39 1. Ba4+ Kxa4 2. b3+ Kb5 3. c4+ Kc6
4. d5+ Kd7 5. e6+ Kxd8 6. f5 Rc6 7.
Kf3 Rb5 8. Ke3 Bb6 9. Ke4 Kc7
11 11.50 -1.39 1. Ba4+ Kxa4 2. b3+ Kb5 3. c4+ Kc6
4. d5+ Kd7 5. e6+ Kxd8 6. f5 Rc6 7.
Kf3 Rb5 8. Ke3 Bb6 9. Kf3 Kc7 10. Ke4
exit 11 11.50 2/30 1. c4+
White(1): exit
analyze.White(1): analyze complete.
It was actually extremely easy to make this change in the source...It only
required adding 2 lines of code. :)
So far, the code seems to work perfectly. However, I'd like to test some more.
Does anyone have any other, similar, positions I could test this on?
Thanks. :)
Jeremiah
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Last modified: Thu, 15 Apr 21 08:11:13 -0700
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