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[Bug-gnubg] Crashed position examples


From: Ian Shaw
Subject: [Bug-gnubg] Crashed position examples
Date: Fri, 23 Aug 2002 10:29:55 +0100

These positions were posted on GammOnLine by Chris Yep. Crashed net
evaluations again differ hugely between plies.

    GNU Backgammon  Position ID: AABgwLZtAFABAA
                    Match ID   : UQkAAAAAAAAA
    +24-23-22-21-20-19------18-17-16-15-14-13-+  O: GnuBg
OOO | X  X  X          |   |                  |  0 points
OOO |                  |   |                  |  
OOO |                  |   |                  |  
 OO |                  |   |                  |  
 OO |                  |   |                  |  
    |                  |BAR|                  |v 
    |                  |   |                  |  
    |                  |   |                  |  
    |                  |   |                  |  
    |       O  X  X  X |   | X  X  X          |  On roll
    |       O  X  X  X |   | X  X  X          |  0 points
    +-1--2--3--4--5--6-------7--8--9-10-11-12-+  X: ian (Cube: 2)


Evaluator:      CRASHED
        Win   W(g       W(bg)   L(g)    L(bg)   Equity  (cubeful)
static: 0.344   0.000   0.000   0.040   0.020   (-0.373  (+0.000))
 1 ply: 0.572   0.000   0.000   0.045   0.021   (+0.078  (+0.273))
 2 ply: 0.387   0.000   0.000   0.056   0.029   (-0.310  (-0.178))


No redouble         : -0.178
Redouble, pass      : +1.000   (+1.178)
Redouble, take      : -1.076   (-0.898)

Correct cube action: No redouble, beaver

----------------------------------------------------------------------------
-------

    GNU Backgammon  Position ID: AQAggG3bAKgAAA
                    Match ID   : UQkAAAAAAAAA
    +24-23-22-21-20-19------18-17-16-15-14-13-+  O: GnuBg
OOO | O  X  X  X       |   |                  |  0 points
OOO |                  |   |                  |  
OOO |                  |   |                  |  
 OO |                  |   |                  |  
 OO |                  |   |                  |  
    |                  |BAR|                  |v 
    |                  |   |                  |  
    |                  |   |                  |  
    |                  |   |                  |  
    |             X  X |   | X  X  X  X       |  On roll
    |          O  X  X |   | X  X  X  X       |  0 points
    +-1--2--3--4--5--6-------7--8--9-10-11-12-+  X: ian (Cube: 2)

Evaluator:      CRASHED
        Win     W(g)    W(bg)   L(g)    L(bg)   Equity  (cubeful)
static: 0.297   0.000   0.000   0.108   0.086   (-0.601  (+0.000))
 1 ply: 0.493   0.000   0.000   0.050   0.023   (-0.086  (+0.082))
 2 ply: 0.309   0.000   0.000   0.099   0.060   (-0.541  (-0.436))

No redouble         : -0.436
Redouble, pass      : +1.000   (+1.436)
Redouble, take      : -1.665   (-1.229)

Correct cube action: No redouble, beaver

Regards
Ian Shaw

PS.
The Win W(g) ... row seems to have an extra tab between columns. The
original comes out like so:
        Win     W(g)    W(bg)   L(g)    L(bg)   Equity  (cubeful)
static: 0.297   0.000   0.000   0.108   0.086   (-0.601  (+0.000))
 1 ply: 0.493   0.000   0.000   0.050   0.023   (-0.086  (+0.082))
 2 ply: 0.309   0.000   0.000   0.099   0.060   (-0.541  (-0.436))





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