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Backgammon => Backgammon problems => Topic started by: PersianLord on May 10, 2008, 09:47:22 PM

Poll
Question: Red to play 6-4
Option 1: bar/21-7/1 votes: 0
Option 2: bar/21-8/2 votes: 0
Option 3: bar/15 votes: 4
Option 4: bar/21-22/16* votes: 5
Option 5: bar/21-13/7 votes: 0
Title: Position #28
Post by: PersianLord on May 10, 2008, 09:47:22 PM
Position information:

Pip-count: Red 162-90 White
Score:       Red    6-3 White
Match:                 7-pointer

Red to play 6-4

(http://www.freewebs.com/persianlord/position28.png)

Make your vote and then read on.




Spoiler
Here red might find hitting quite tempting, but it's actually a terrible blunder. Considering red's almost empty board, white will land for sure and then he'll have more than enough chances to hit loose one of red's blots in his board or his outfield. And because the cube value is on 2, white's gammon chances will end the world for red. Thus, red must keep his valuable anchor and play safe.


    1. Cubeful 2-ply    bar/15                       Eq.:  -0.976
        27.7%   2.9%   0.0% -  72.3%  25.0%   0.2%
     
    2. Cubeful 2-ply    bar/21 22/16*                Eq.:  -1.312 ( -0.336)
        28.3%   5.5%   0.1% -  71.7%  41.4%   0.9%
     
    3. Cubeful 2-ply    bar/21 7/1                   Eq.:  -1.419 ( -0.443)
        21.7%   3.2%   0.1% -  78.3%  40.1%   0.4%
       
    4. Cubeful 2-ply    bar/21 8/2                   Eq.:  -1.427 ( -0.451)
        21.1%   3.0%   0.1% -  78.9%  40.0%   0.4%
       
    5. Cubeful 2-ply    bar/21 13/7                  Eq.:  -1.485 ( -0.509)
        22.8%   3.3%   0.0% -  77.2%  44.3%   0.5%
       
As cen be seen, hitting will win more for red, but also will cause more gammon losses. At this score and situation, red should be more conservative and avoid risky moves. Thus, running to the outfield is recommended.

[close]
Title: Re: Position #28
Post by: Tomawaky on May 10, 2008, 10:02:38 PM
Bar/15.
don't want to be gammoned  :blush:
Title: Re: Position #28
Post by: spielberg on May 11, 2008, 03:22:47 PM
Hey Ali you didn't post the match score!
Title: Re: Position #28
Post by: PersianLord on May 11, 2008, 05:46:41 PM
Quote from: spielberg on May 11, 2008, 03:22:47 PM
Hey Ali you didn't post the match score!

lol, I think I did. Red is leading 6-3 (post-crawford)  :thumbsup: