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2 pip or 1/2 pip crossover penalty

Posted By: Chuck Bower
Date: Wednesday, 8 September 2010, at 4:51 p.m.

In Response To: 2 pip or 1/2 pip crossover penalty (Stanley E. Richards)

Background: Stanley e-mailed me a couple posts from a GoL (now GammonU) thread which included the position below. The thread (and problem below) were initiated by "QuizFactorette" (aka "Racgammon" aka Raccoon aka Daniel Murphy). Although I did post in that thread, Stanley apparently didn't save my post. (And as it says on the broken record "unfortunately GoL/GU posts are not archived, except possibly in a private collection".) This document confirms the date of 2006.

As far as penalties for outside crossovers, I guess I've revereted to Ward's 0.5 pips each, although I previously didn't (and still don't) think that is a magic number. (Further, I don't think there is a magic number.) Thorp and Ward have a sweetspot which falls in the moderate to long bearoffs without severe wastage. I'm pretty sure those are the situations Thorp used and Ward is a tweak of Thorp.

		White is Player 2 score: 0 pip: 61 1 point match pip: 57 score: 0 Blue is Player 1
XGID=-BBBCCC----------aabbcbbb-:0:0:1:00:0:0:0:1:10
Blue on roll, cube action?

eXtreme Gammon Version: 1.21

Messages In This Thread

• 2 pip or 1/2 pip crossover penalty
  Stanley E. Richards -- Monday, 6 September 2010, at 11:46 a.m.
  • 2 pip or 1/2 pip crossover penalty
    Tom Keith -- Monday, 6 September 2010, at 12:48 p.m.
    • 2 pip or 1/2 pip crossover penalty
      Daniel Murphy -- Monday, 6 September 2010, at 7:12 p.m.
    • 2 pip or 1/2 pip crossover penalty
      Stanley E. Richards -- Tuesday, 7 September 2010, at 4:14 a.m.
      • 2 pip or 1/2 pip crossover penalty
        Daniel Murphy -- Tuesday, 7 September 2010, at 6:19 p.m.
  • 2 pip or 1/2 pip crossover penalty
    Chuck Bower -- Tuesday, 7 September 2010, at 4:39 p.m.
    • 2 pip or 1/2 pip crossover penalty
      Stanley E. Richards -- Wednesday, 8 September 2010, at 3:42 a.m.
  • 2 pip or 1/2 pip crossover penalty
    Chuck Bower -- Wednesday, 8 September 2010, at 4:51 p.m.
    • 2 pip or 1/2 pip crossover penalty
      Bob Koca -- Wednesday, 8 September 2010, at 9:31 p.m.