BGonline.org Forums

XG question: Double point at -2,-2

Posted By: Bob Koca
Date: Monday, 5 July 2010, at 3:16 p.m.

In Response To: XG question: Double point at -2,-2 (Maik Stiebler)

My example from before did involve a too good situation. Basically it was X having 14 on the ace point and 1 on the 7 having to leap a 5 prime. Any market loss would result in always winning a gammon anyways so no need to cube. Put the other 5 opponent checkers in a way so that X just barely has a take and then the desired conditions hold true.

But now I have an example where the following are true:

1) There is no sequence that makes X too good to double 2) X has a market losing sequence 3) X has no roll so that opponent has immediately lost his market. 4) The double is optional

Of course a literal proof of the above is difficult but each point is clearly true in my example (with rollout help).

Messages In This Thread

• XG question: Double point at -2,-2
  Andreas -- Sunday, 4 July 2010, at 5:12 p.m.
  • XG question: Double point at -2,-2
    Neil Robins -- Sunday, 4 July 2010, at 5:40 p.m.
    • XG question: Double point at -2,-2
      Andreas -- Sunday, 4 July 2010, at 6:28 p.m.
  • XG question: Double point at -2,-2
    Bob Koca -- Sunday, 4 July 2010, at 6:29 p.m.
    • XG question: Double point at -2,-2
      Christian Plenz -- Sunday, 4 July 2010, at 6:38 p.m.
    • XG question: Double point at -2,-2
      Fabrice Liardet -- Monday, 5 July 2010, at 9:17 a.m.
      • XG question: Double point at -2,-2
        Stick -- Monday, 5 July 2010, at 11:36 a.m.
        • XG question: Double point at -2,-2
          Fabrice Liardet -- Monday, 5 July 2010, at 12:05 p.m.
      • XG question: Double point at -2,-2
        Bob Koca -- Monday, 5 July 2010, at 12:38 p.m.
        • XG question: Double point at -2,-2
          Fabrice Liardet -- Monday, 5 July 2010, at 1:19 p.m.
          • XG question: Double point at -2,-2
            Maik Stiebler -- Monday, 5 July 2010, at 2:10 p.m.
            • XG question: Double point at -2,-2
              Bob Koca -- Monday, 5 July 2010, at 3:16 p.m.
              • XG question: Double point at -2,-2
                Bob Koca -- Monday, 5 July 2010, at 3:19 p.m.
              • XG question: Double point at -2,-2
                Nack Ballard -- Monday, 5 July 2010, at 7:20 p.m.
                • XG question: Double point at -2,-2
                  Matt Cohn-Geier -- Monday, 5 July 2010, at 7:24 p.m.
                  • XG question: Double point at -2,-2
                    Nack Ballard -- Monday, 5 July 2010, at 7:54 p.m.
                • XG question: Double point at -2,-2
                  Bob Koca -- Tuesday, 6 July 2010, at 12:11 a.m.
                  • XG question: Double point at -2,-2
                    Nack Ballard -- Tuesday, 6 July 2010, at 1:38 a.m.
                    • XG question: Double point at -2,-2
                      Bob Koca -- Tuesday, 6 July 2010, at 1:45 a.m.
              • XG question: Double point at -2,-2
                Nack Ballard -- Tuesday, 6 July 2010, at 4:13 a.m.
                • XG question: Double point at -2,-2
                  Bob Koca -- Tuesday, 6 July 2010, at 5:15 a.m.
                  • XG question: Double point at -2,-2
                    Nack Ballard -- Tuesday, 6 July 2010, at 9:36 a.m.
                    • XG question: Double point at -2,-2
                      Bob Koca -- Wednesday, 7 July 2010, at 11:01 a.m.
                      • XG question: Double point at -2,-2
                        Nack Ballard -- Wednesday, 7 July 2010, at 4:55 p.m.
                  • Spoilers
                    Matt Cohn-Geier -- Wednesday, 7 July 2010, at 11:35 a.m.
                    • Spoilers
                      Nack Ballard -- Wednesday, 7 July 2010, at 5:37 p.m.
                      • Spoilers
                        Bob Koca -- Wednesday, 7 July 2010, at 8:59 p.m.
            • XG question: Double point at -2,-2
              Fabrice Liardet -- Monday, 5 July 2010, at 4:06 p.m.
  • XG question: Double point at -2,-2
    Christian Plenz -- Sunday, 4 July 2010, at 6:44 p.m.
    • below 38%
      Christian Plenz -- Sunday, 4 July 2010, at 8:02 p.m.
      • below 38%
        Christian Plenz -- Sunday, 4 July 2010, at 8:06 p.m.
        • below 38%
          Dmitriy Obukhov -- Tuesday, 6 July 2010, at 9:24 a.m.
          • below 38%
            Dmitriy Obukhov -- Tuesday, 6 July 2010, at 9:43 a.m.
            • below 38%
              Bob Koca -- Tuesday, 6 July 2010, at 9:48 a.m.
              • below 38%
                Dmitriy Obukhov -- Wednesday, 7 July 2010, at 8:44 a.m.
          • below 38%
            Bob Koca -- Tuesday, 6 July 2010, at 9:46 a.m.