Re: [Bug-gnubg] very bad analysis bug

[Ned Cross]

Below analysis was from an imported .mat file.  Following Analyse/Clear Analysis Move, Analyse/Match, the problem cleared.

 

I reloaded the match from scratch and the bug did not repeat.  Very strange.

----- Original Message -----

From: Ned Cross

To: gnubg

Sent: Thursday, April 24, 2003 1:08 AM

Subject: [Bug-gnubg] very bad analysis bug

For some reason GNU seems overly fond of the opening 6-2 roll, but I can't understand where that equity value would come from.

 

Ned

 

 

Move number 1: O to play 62

 GNU Backgammon  Position ID: 4HPwATDgc/ABMA
                 Match ID   : MAHrAQAAAAAA
 +12-11-10--9--8--7-------6--5--4--3--2--1-+     O: O
 | X           O    |   | O              X |     0 points
 | X           O    |   | O              X |     Rolled 62
 | X           O    |   | O                |    
 | X                |   | O                |    
 | X                |   | O                |   
^|                  |BAR|                  |     15 point match (Cube: 1)
 | O                |   | X                |   
 | O                |   | X                |    
 | O           X    |   | X                |    
 | O           X    |   | X              O |    
 | O           X    |   | X              O |     0 points
 +13-14-15-16-17-18------19-20-21-22-23-24-+     X: X
Pip counts: O 167, X 167

 

* O 13/5
Alert: very bad move (-14.491)

 

Rolled 62 (+0.042):
     1. Cubeful 2-ply    24/18 13/11                  Eq.: +14.685
       0.516 0.132 0.006 - 0.484 0.133 0.004
*    2. Cubeful 2-ply    13/5                         Eq.:  +0.194 (-14.491)
       0.497 0.145 0.006 - 0.503 0.140 0.006
     3. Cubeful 2-ply    13/11 13/7                   Eq.:  +0.178 (-14.507)
       0.488 0.147 0.007 - 0.512 0.149 0.008
     4. Cubeful 2-ply    24/16                        Eq.:  +0.178 (-14.507)
       0.506 0.121 0.004 - 0.494 0.135 0.004
     5. Cubeful 2-ply    24/22 13/7                   Eq.:  +0.158 (-14.527)
       0.486 0.135 0.006 - 0.514 0.139 0.005
     6. Cubeful 2-ply    24/22 24/18                  Eq.:  +0.152 (-14.533)
       0.495 0.117 0.005 - 0.505 0.143 0.004

 

Output generated Thu Apr 24 00:59:34 2003
by GNU Backgammon 0.13-devel (Text Export version 1.38)

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