日本バックギャモン協会

XGID=--abBBBCB----B---cbbBb-ba-:1:-1:1:54:5:8:0:9:10

X:nori   O:leyla65
Score is X:5 O:8 9 pt(s) match.
 +24-23-22-21-20-19------18-17-16-15-14-13-+
 | O  O     O  X  O |   | O  O           X | +---+
 |    O     O  X  O |   | O  O           X | | 2 |
 |                  |   |    O             | +---+
 |                  |   |                  |
 |                  |   |                  |
 |                  |BAR|                  |
 |                  |   |                  |
 |                  |   |                  |
 |                  |   | X                |
 |       O  X  X  X |   | X  X             |
 |    O  O  X  X  X |   | X  X             |
 +-1--2--3--4--5--6-------7--8--9-10-11-12-+
Pipcount  X: 133  O: 130 X-O: 5-8/9
Cube  : 2, O own cube
X to play 54

    1. XG Roller+  13/4                         eq:+0.969
      Player  : 79.74% (G:17.83% B:0.68%)
      Opponent: 20.26% (G:3.10% B:0.07%)

    2. XG Roller+  20/16 20/15                  eq:+0.898 (-0.071)
      Player  : 81.52% (G:12.75% B:0.37%)
      Opponent: 18.48% (G:2.38% B:0.03%)

    3. 4 ply       13/9 13/8                    eq:+0.936 (-0.033)
      Player  : 79.10% (G:16.87% B:0.74%)
      Opponent: 20.90% (G:3.34% B:0.07%)

    4. 4 ply       20/11                        eq:+0.936 (-0.033)
      Player  : 81.72% (G:14.36% B:0.48%)
      Opponent: 18.28% (G:3.11% B:0.05%)

    5. 4 ply       20/15 13/9                   eq:+0.918 (-0.051)
      Player  : 77.80% (G:17.23% B:0.88%)
      Opponent: 22.20% (G:8.35% B:0.54%)


eXtreme Gammon Version: 1.21, MET: Rockwell-Kazaross

コンタクトを維持したほうが、勝率が高いようです。
もちろんこのスコアなのでギャモン率も非常に大きいですが。

この手の局面のプレーは２枚出が基本と覚えていたので、その穴が見つかったようです。

_________________
nori

http://www.backgammonbase.com