FIBS Board backgammon forum

Backgammon => Fibsboard Forum Matches => FFM 17 => Topic started by: stog on January 01, 2014, 11:38:06 AM

Poll
Question:
Option 1: 6/2* (2)
Option 2: 11/7 6/4*(2)
Option 3: 8/4*(2)
Option 4: 18/16 11/5
Title: Fibsboard Forum Match 17 Game 1 Move 17 Herd to play
Post by: stog on January 01, 2014, 11:38:06 AM
Fibsboard Forum Match 17 Game 1 Move 17 Herd to play

2 2

let me know of any other desired plays
Title: Re: Fibsboard Forum Match 17 Game 1 Move 17 Herd to play
Post by: ah_clem on January 01, 2014, 09:57:29 PM
Spoiler

Whacking two should always be considered whenever the opportunity presents itself, but here we get a chance to make a 5 point board and a solid 5 prime while whacking one and I think that trumps whacking two.

6/4*(2)/2*(2) may win more gammons, but our gammon value is less than usual.  Were the other side of the board otherwise I'd be concerned about elmicho anchoring on the two point and causing difficulty,but with his about-to-crunch board and our abundant timing I'm not too concerned about letting him anchor.

8/4*(2)

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Title: Re: Fibsboard Forum Match 17 Game 1 Move 17 Herd to play
Post by: Zorba on January 04, 2014, 09:48:47 PM
GNUbg 4-ply:

Spoiler

This one is no contest, since the double hit/point actually wins somewhat less gammons, apart from winning a lot less games. Leaving both the 6 and 4pt open, breaking up the blockade almost completely,  is just a bit too much here, even with the double whack as tactical compensation.

    1. Cubeful 4-ply    8/4*(2)                      Eq.:  +0.7526
       0.8462 0.2269 0.0037 - 0.1538 0.0222 0.0009
        4-ply cubeful prune [4ply]
    2. Cubeful 4-ply    6/4*/2*(2)                   Eq.:  +0.5631 ( -0.1894)
       0.7666 0.2166 0.0023 - 0.2334 0.0609 0.0027
        4-ply cubeful prune [4ply]
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