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Backgammon => Backgammon => Topic started by: gumpi on September 28, 2006, 03:54:39 PM

Title: for nabla
Post by: gumpi on September 28, 2006, 03:54:39 PM
so nabla, you seem to be interested in doubling probabilities, hereÃ,´s a question for you, a matchsituation that happend to me two weeks ago on fibs:

Doppler-Aktion?

GNU Backgammon  Position ID: CgAAWAAAAAAAAA
                 Match ID   : UQmgACAAAAAA
+13-14-15-16-17-18------19-20-21-22-23-24-+     O: gnubg
|                  |   |          O  O    | OOO 2 Punkte
|                  |   |                  | OOO
|                  |   |                  | OOO
|                  |   |                  | OO 
|                  |   |                  | OO
v|                  |BAR|                  |     5-Punkte-Match
|                  |   |                  | XX
|                  |   |                  | XX 
|                  |   |                  | XX 
|                  |   |                X | XXX Am Wurf
|                  |   |             X  X | XXX 0 Punkte
+12-11-10--9--8--7-------6--5--4--3--2--1-+     X: user (Doppler: 2)


What about whites, what about blacks winning probabilities?
where is black`s minimal doubling point, where is white`s takepoint?
what`s blacks MWC with and without a double?

questions from the real life
Title: Re: for nabla
Post by: spielberg on September 28, 2006, 06:31:59 PM
I've tidied up your position, gumpi , (I hope I've got it right) so those unfamiliar with gnubg can have a look.


+13-14-15-16-17-18------19-20-21-22-23-24-+     o:0
|                                |   | o  o         o    o    o   
|                                |   |                o    o    o 
|                                |   |                o    o    o
|                                |   |                o    o     
|                                |   |                o    o   
|                               |BAR|                 
|                                |   |                      x     x
|                                |   |                      x     x
|                                |   |                      x     x
|                                |   |     x         x    x     x
|                                |   | x  x         x    x     x
+12-11-10--9--8--7-------6--5--4--3--02--01     X:2

X leading (2,0) in a 5pt match, ie (-3,-5), is on roll with the cube centred.
Do they have a cube and what are the relevant numbers  (MWCs pre and post cube, tps etc ) ?


PS my adjusted Kleinmann is around 1.75 - so I reckon they certainly should cube and hope their opponent takes. (I doubt gnubg would!)
Title: Re: for nabla
Post by: webrunner on September 28, 2006, 07:50:19 PM
Use the code button(http://www.fibsboard.com/Themes/Fibsboard/images/bbc/code.gif): it will show the positions correctly :)

See the modification i made to the first post of this topic. If you want to see how i did it click the "Quote" button ;)
Title: Re: for nabla
Post by: gumpi on September 29, 2006, 01:59:35 PM
diagram failure!

the oÃ,´s and xÃ,´s beside the board have no meaning........