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rollout

Posted By: Marty Storer
Date: Friday, 13 February 2009, at 2:16 p.m.

In Response To: rollout (aoleg1)

But I like 6/4* 6/3*. It seems that 6/4*/1* is too commital to race (if a blot on 1st point is not hitted back). 3 and 4 points are better places for those checkers than 6 and 1!

(1) When ahead in the race, race. Blue is way ahead in the race. 16/11 leaves 12 shots at the 11-point blot, plus other good numbers elsewhere, and gains no tempo. The double hit is strong by comparison. Note that the second-best rolled-out play is 6/3*/1* which like 6/4*/1* leaves only a single direct shot and gains two tempi, but doesn't push White quite as far back.

(2) Magriel's safe-vs-bold criteria call for a safe play (Blue has a worse board than White, and fewer checkers back). 16/13 8/6 is too ugly: stripping the 8 point and overstacking the 6 point cause too much of a playability problem. 16/11 is not very safe at all. Double-hitting and leaving a single direct shot is safer than double-hitting into a double direct shot--although double-hitting is clearly the way to go, consistent with the fact that the rollout puts 6/3* 6/4* is in the ballpark.

All three double hits are tactically strong, but Magriel's criteria break the tie.

Messages In This Thread

• an ugly position
  aoleg1 -- Tuesday, 10 February 2009, at 11:24 a.m.
  • an ugly position
    Peter G. -- Tuesday, 10 February 2009, at 11:58 a.m.
  • an ugly position
    pontiac -- Tuesday, 10 February 2009, at 3:17 p.m.
  • an ugly position
    Chuck Bower -- Tuesday, 10 February 2009, at 3:28 p.m.
  • an ugly position
    neilkaz -- Tuesday, 10 February 2009, at 3:57 p.m.
    • an ugly position
      Tad Bright -- Tuesday, 10 February 2009, at 5:15 p.m.
    • rollout
      aoleg1 -- Wednesday, 11 February 2009, at 1:58 p.m.
      • rollout
        Marty Storer -- Friday, 13 February 2009, at 2:16 p.m.
  • an ugly position
    Caryl Stephanson -- Tuesday, 10 February 2009, at 10:53 p.m.