Author: Peter Rosendahl
Date: 06:17:05 03/09/02
Go up one level in this thread
On March 09, 2002 at 09:13:28, Anthony Boynes wrote:
>After letting it run longer, Crafty finally switches away from Bxe3:
>
>end-game phase
> clearing hash tables
> time limit 15.00 (1:45)
> nss depth time score variation (1)
> 7 0.15 -- 1. ... Nc2
> 7 0.18 5.14 1. ... Nc2 2. Re4 Bg7 3. Rc4+ Kd5 4.
> Rxc2 Ke4 5. Kf2
> 7 0.32 3.95 1. ... Kb7 2. g7 Bxg7 3. Re7+ Kc6 4.
> Rxg7 Kd6 5. Kf2 Nc2
> 7 0.37 3.50 1. ... Kb5 2. Re7 Bc5 3. g7 Bxe7 4.
> g8=Q Kc5 5. Ke2
> 7 0.39 3.30 1. ... Kc5 2. Re7 Kd6 3. g7 Kxe7 4.
> g8=Q Bb2 5. Kf2
> 7-> 0.43 3.30 1. ... Kc5 2. Re7 Kd6 3. g7 Kxe7 4.
> g8=Q Bb2 5. Kf2
> 8 0.48 3.35 1. ... Kc5 2. Re7 Kd6 3. g7 Kxe7 4.
> g8=Q Bb2 5. Qh7+ Kd6 6. Kf2
> 8-> 0.63 3.35 1. ... Kc5 2. Re7 Kd6 3. g7 Kxe7 4.
> g8=Q Bb2 5. Qh7+ Kd6 6. Kf2
> 9 0.66 3.35 1. ... Kc5 2. Re7 Kd6 3. g7 Kxe7 4.
> g8=Q Bb2 5. Qh7+ Kd6 6. Kf2 Bc3
> 9-> 0.78 3.35 1. ... Kc5 2. Re7 Kd6 3. g7 Kxe7 4.
> g8=Q Bb2 5. Qh7+ Kd6 6. Kf2 Bc3
> 10 0.92 -- 1. ... Kc5
> 10 1.86 3.80 1. ... Kc5 2. Re7 Kd6 3. Rh7 Ke6 4.
> Rb7 Nc2 5. g7 Bxg7 6. Rxg7 Nb4
> 10 2.54 3.55 1. ... Bxe3 2. g7 Bd4 3. g8=Q Kd6 4.
> Qd8+ Ke5 5. Ke2 Ke4 6. Qc8 Kd5 7. Kd3
> 10-> 2.80 3.55 1. ... Bxe3 2. g7 Bd4 3. g8=Q Kd6 4.
> Qd8+ Ke5 5. Ke2 Ke4 6. Qc8 Kd5 7. Kd3
> 11 2.98 3.65 1. ... Bxe3 2. g7 Bd4 3. g8=Q Kd6 4.
> Ke2 Bf6 5. Kd3 Be5 6. Qb8+ Kd5 7. Qa8+
> Kc5 8. Ke4
> 11-> 3.80 3.65 1. ... Bxe3 2. g7 Bd4 3. g8=Q Kd6 4.
> Ke2 Bf6 5. Kd3 Be5 6. Qb8+ Kd5 7. Qa8+
> Kc5 8. Ke4
> 12 4.07 3.65 1. ... Bxe3 2. g7 Bd4 3. g8=Q Kd6 4.
> Ke2 Bf6 5. Kd3 Be5 6. Qb8+ Kd5 7. Qa8+
> Kc5 8. Ke4 Kd6
> 12-> 5.16 3.65 1. ... Bxe3 2. g7 Bd4 3. g8=Q Kd6 4.
> Ke2 Bf6 5. Kd3 Be5 6. Qb8+ Kd5 7. Qa8+
> Kc5 8. Ke4 Kd6
> 13 6.21 3.65 1. ... Bxe3 2. g7 Bd4 3. g8=Q Kd6 4.
> Ke2 Bf6 5. Kd3 Ke5 6. Qb8+ Kd5 7. Qf8
> Ke5 8. Qc5+ Ke6 9. Ke4 <HT>
> 13-> 7.95 3.65 1. ... Bxe3 2. g7 Bd4 3. g8=Q Kd6 4.
> Ke2 Bf6 5. Kd3 Ke5 6. Qb8+ Kd5 7. Qf8
> Ke5 8. Qc5+ Ke6 9. Ke4 <HT>
> 14 9.57 3.75 1. ... Bxe3 2. g7 Bd4 3. g8=Q Kd6 4.
> Qd8+ Ke5 5. Ke2 Ke4 6. Qa8+ Kf5 7.
> Kd3 Be5 8. Qc8+ Kf4 9. Qf8+ Kg4 10.
> Ke4 Bb2
> 14-> 14.42 3.75 1. ... Bxe3 2. g7 Bd4 3. g8=Q Kd6 4.
> Qd8+ Ke5 5. Ke2 Ke4 6. Qa8+ Kf5 7.
> Kd3 Be5 8. Qc8+ Kf4 9. Qf8+ Kg4 10.
> Ke4 Bb2
> 15 17.32 3.75 1. ... Bxe3 2. g7 Bd4 3. g8=Q Kd6 4.
> Qd8+ Ke5 5. Ke2 Ke4 6. Qa8+ Kf5 7.
> Kd3 Bf6 8. Qe4+ Kg5 9. Qd5+ Kf4 10.
> Qe6 Kg5 11. Ke4 Nc2
> 15-> 22.51 3.75 1. ... Bxe3 2. g7 Bd4 3. g8=Q Kd6 4.
> Qd8+ Ke5 5. Ke2 Ke4 6. Qa8+ Kf5 7.
> Kd3 Bf6 8. Qe4+ Kg5 9. Qd5+ Kf4 10.
> Qe6 Kg5 11. Ke4 Nc2
> 16 33.37 4.08 1. ... Bxe3 2. g7 Bd4 3. g8=Q Kd6 4.
> Qd8+ Kc5 5. Ke2 Nb3 6. Kd3 Kb4 7. Qc8
> Be5 8. Qb7+ Ka4 9. Qc6+ Ka3 10. Qe8
> Nc5+ 11. Kc4 Bd6
> 16-> 54.07 4.08 1. ... Bxe3 2. g7 Bd4 3. g8=Q Kd6 4.
> Qd8+ Kc5 5. Ke2 Nb3 6. Kd3 Kb4 7. Qc8
> Be5 8. Qb7+ Ka4 9. Qc6+ Ka3 10. Qe8
> Nc5+ 11. Kc4 Bd6
> 17 1:09 4.11 1. ... Bxe3 2. g7 Bd4 3. g8=Q Kd6 4.
> Qd8+ Kc5 5. Ke2 Kc4 6. Qc8+ Kb3 7.
> Kd3 Bb2 8. Qa6 Ba3 9. Qc4+ Kb2 10.
> Qd5 Kb1 11. Qg2 Kc1 12. Qd2+ Kb1
> 17-> 1:34 4.11 1. ... Bxe3 2. g7 Bd4 3. g8=Q Kd6 4.
> Qd8+ Kc5 5. Ke2 Kc4 6. Qc8+ Kb3 7.
> Kd3 Bb2 8. Qa6 Ba3 9. Qc4+ Kb2 10.
> Qd5 Kb1 11. Qg2 Kc1 12. Qd2+ Kb1
> 18 2:02 -- 1. ... Bxe3
> 18 3:57 6.55 1. ... Bxe3 2. g7 Bd4 3. g8=Q Kd6 4.
> Qf8+ Kd5 5. Qf7+ Ke4 6. Ke2 Be5 7.
> Qg6+ Kd4 8. Qf5 Kd5 9. Kd3 Nc2 10.
> Kxc2 Kd6 11. Kd3 Kd5 12. Qf8
> 18 17:08 4.25 1. ... Kc5 2. Ke2 Nc2 3. Re7 Nb4 4.
> g7 Bxg7 5. Rxg7 Kb5 6. Rg8 Nd5 7. Rh8
> Kc4 8. Rh4+ Kb5 9. Kd3 Kc5 10. Rh5
> Kd6 11. Kc4
>end 18 17:34 5/20? 1. ... Bc5
>Black(0): end
>execution complete.
I can confirm that (also under Win2K). I also tried it with a new compiled
Version (MSVC6) and get the same results. Maybe the problem
has to do with the rook vs. minor piece evaluation?
For 8/6R1/3k4/8/8/8/8/n4K2 b - - 0 1 4 this position I get:
****** Crafty 18.13 ******
EPD Kit revision date: 1996.04.21
unable to open book file [./book.bin].
book is disabled
unable to open book file [./books.bin].
Crafty v18.13
White(1): easy
pondering disabled.
White(1): setboard 8/6R1/3k4/8/8/8/8/n4K2 b - - 0 4
Black(1): score
end-game phase
clearing hash tables
note: scores are for the white side
material evaluation................. 3.60
development......................... 0.00
pawn evaluation..................... 0.00
passed pawn evaluation.............. 0.00
passed pawn race evaluation......... 0.00
king safety evaluation.............. 0.02
interactive piece evaluation........ 0.18
total evaluation.................... 3.80
Black(1):
With an older version I get:
****** Crafty v18.7 ******
EPD Kit revision date: 1996.04.21
unable to open book file [./book.bin].
book is disabled
unable to open book file [./books.bin].
Crafty v18.7
White(1): easy
pondering disabled.
White(1): setboard 8/6R1/3k4/8/8/8/8/n4K2 b - - 0 4
Black(1): score
end-game phase
clearing hash tables
note: scores are for the white side
material evaluation................. 2.00
development......................... 0.00
pawn evaluation..................... 0.00
passed pawn evaluation.............. 0.00
passed pawn race evaluation......... 0.00
king safety evaluation.............. 0.39
interactive piece evaluation........ -2.39
total evaluation.................... 0.00
Black(1):
Regards, Peter
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