Author: Jeremiah Penery
Date: 09:50:15 01/11/03
Go up one level in this thread
On January 11, 2003 at 08:31:44, Lieven Clarisse wrote:
>This is most probably a well known position (pasted below). But ruffian resigns
>here (5 min/game PIII 450 64MB hash). I think this kind of situation can be
>easily dealt with: if the evaluation score for the initial position is equal to
>that, after 25 ply (for instance) for the best line, than the score for that
>position should set to 0.00. In other words, if the engine can't make any
>progress after a certain number of moves, it is draw; no mather how inbalanced
>the material is for both sides.
>
>
>[D] 7k/8/1p1p1p1p/pPpPpPpP/P1P1P1P1/8/1RK5/1R6 b - - 0 1
How about just showing a 0.00 score from the first ply? :)
White(1): 7k/8/1p1p1p1p/pPpPpPpP/P1P1P1P1/8/1RK5/1R6 b - - 0 1
Black(1): score
end-game phase
clearing hash tables
NOTE: Scores are shown for white.
Material Evaluation................. 10.00
Development......................... 0.00
Pawn Evaluation..................... 0.24
Passed Pawn Evaluation.............. 0.00
Passed Pawn Race Evaluation......... 0.00
King Safety Evaluation.............. 0.40
Interactive Piece Evaluation........ -10.64
Total Static Evaluation............. 0.00
Quiescence Evaluation............... 0.00
Black(1): analyze
Analyze Mode: type "exit" to terminate.
clearing hash tables
time surplus 0.00 time limit 22.50 (3:30)
depth time score variation (1)
1 0.00 0.00 1. ... Kg7
1-> 0.00 0.00 1. ... Kg7
2 0.00 0.00 1. ... Kg7 2. Rb4
2-> 0.00 0.00 1. ... Kg7 2. Rb4
3 0.00 0.00 1. ... Kg7 2. Rb4 Kf7
3-> 0.00 0.00 1. ... Kg7 2. Rb4 Kf7
4 0.00 0.00 1. ... Kg7 2. Rb4 Kf7 3. R4b3
4-> 0.00 0.00 1. ... Kg7 2. Rb4 Kf7 3. R4b3
5 0.01 0.00 1. ... Kg7 2. Rb4 Kf7 3. R4b3 Ke7
5-> 0.01 0.00 1. ... Kg7 2. Rb4 Kf7 3. R4b3 Ke7
6 0.01 0.00 1. ... Kg7 2. Rb4 Kf7 3. R4b3 Ke7 4.
Rb4
6-> 0.01 0.00 1. ... Kg7 2. Rb4 Kf7 3. R4b3 Ke7 4.
Rb4
7 0.02 0.00 1. ... Kg7 2. Rb4 Kf7 3. R4b3 Ke7 4.
Rb4 Kd7
7-> 0.02 0.00 1. ... Kg7 2. Rb4 Kf7 3. R4b3 Ke7 4.
Rb4 Kd7
8 0.05 0.00 1. ... Kg7 2. Rb4 Kf7 3. R4b3 Ke7 4.
Rb4 Kd7 5. R4b3
8-> 0.05 0.00 1. ... Kg7 2. Rb4 Kf7 3. R4b3 Ke7 4.
Rb4 Kd7 5. R4b3
This is a modified Crafty 19.1 that I made a long time ago to detect many kinds
of blocked positions. I believe the code is in the distributed Crafty, but you
must #define it and compile yourself to see it.
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