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41S-xxx-43 and 43Z-xxx-41, general info

Posted By: Nack Ballard
Date: Friday, 18 June 2010, at 12:55 a.m.

In Response To: 41S-xxx-43 and 43Z-xxx-41, general info (Timothy Chow)

41S-65R-43: @ and P are tied

As I understand it, one reason that making one's own 5 point is more attractive here is that we are further behind in the race and the opponent's position is stripped and inflexible, making the build-my-board-and-hit-a-shot plan more attractive. Yes?

I would say "undeveloped" rather than stripped and inflexible (which implies to me a negative change), but yes, your basic idea is correct.

I believe the one-vs-two-checkers-back factor has more relevance than the race (though to a large extent they go hand-in-hand). Changing the situation -- perhaps to too obvious an extreme but it will help make the point -- if you give White zero checkers back with 65R-41S-65R-43 (diagrammed below), anchoring looks blunderful, and would be so even if you give Blue the extra 11 pips back (say push him forward by 13/8 13/7 for free before he plays his 43).

Extending this logic, if Blue plays 41S-65R-43@, White will sometimes extricate her second checker (e.g., getting missed after an immediate 65 64 54 or escaping later), and in retrospect Blue will have done better building his offense rather than having shored up his defense. White is only one sprung checker away from that scenario. It is for that reason that P (making the 5pt) manages to be tied in the above position instead of being inferior as it is (for distributional reasons) against most second roll plays other than 65R.

Nack

65R-41S-65R-43: P is vastly better than @

Messages In This Thread

• 41S-65R-43?
  Stick -- Tuesday, 15 June 2010, at 11:06 p.m.
  • 41S-65R-43?
    Timothy Chow -- Tuesday, 15 June 2010, at 11:16 p.m.
    • 41S-65R-43?
      Matt Cohn-Geier -- Tuesday, 15 June 2010, at 11:21 p.m.
      • 41S-65R-43?
        Timothy Chow -- Tuesday, 15 June 2010, at 11:29 p.m.
        • 41S-65R-43?
          Matt Cohn-Geier -- Tuesday, 15 June 2010, at 11:38 p.m.
      • 41S-65R-43?
        Nack Ballard -- Wednesday, 16 June 2010, at 12:21 a.m.
        • 41S-65R-43?
          Timothy Chow -- Wednesday, 16 June 2010, at 2:56 p.m.
          • 41S-65R-43?
            Timothy Chow -- Wednesday, 16 June 2010, at 2:58 p.m.
            • Links to old early game posts
              Nack Ballard -- Wednesday, 16 June 2010, at 5:45 p.m.
              • Links to old early game posts
                Stick -- Wednesday, 16 June 2010, at 6:00 p.m.
    • 41S-65R-43?
      Stick -- Tuesday, 15 June 2010, at 11:25 p.m.
  • 41S-65R-43?
    John O'Hagan -- Wednesday, 16 June 2010, at 12:38 a.m.
  • Rollout
    Stick -- Thursday, 17 June 2010, at 4:43 p.m.
    • Rollout
      johnk -- Thursday, 17 June 2010, at 8:13 p.m.
      • Rollout
        Stick -- Thursday, 17 June 2010, at 8:15 p.m.
    • 41S-xxx-43 and 43Z-xxx-41, general info
      Nack Ballard -- Thursday, 17 June 2010, at 8:17 p.m.
      • 41S-xxx-43 and 43Z-xxx-41, general info
        Timothy Chow -- Thursday, 17 June 2010, at 8:55 p.m.
        • 41S-xxx-43 and 43Z-xxx-41, general info
          Stick -- Thursday, 17 June 2010, at 9:04 p.m.
        • 41S-xxx-43 and 43Z-xxx-41, general info
          Nack Ballard -- Friday, 18 June 2010, at 12:55 a.m.