Be tight when Opp is likly to lauch atacks

    1. Cubeful 2-ply    9/5                          Eq.:  -0.0334
       0.5045 0.1584 0.0131 - 0.4955 0.1724 0.0048
        2-ply cubeful prune [world class]
    2. Cubeful 2-ply    13/9                         Eq.:  -0.1396 ( -0.1062)
       0.4788 0.1409 0.0097 - 0.5212 0.1748 0.0049
        2-ply cubeful prune [world class]
    3. Cubeful 2-ply    13/10 6/5                    Eq.:  -0.1711 ( -0.1377)
       0.4768 0.1483 0.0110 - 0.5232 0.1989 0.0081
        2-ply cubeful prune [world class]