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ATS opening

Posted By: Philip Cherrington
Date: Saturday, 1 January 2011, at 9:53 a.m.

In Response To: ATS opening (Timothy Chow)

They are not rollouts, they are full 7 ply evaluations.

Admitted while the differences between Jacoby and Not are mostly one of degree, there are enough reversals (and/or moving into or out of being a playable alternative) to warrant further investigation. (Or... is it just an artifact of XG's method of calculation?)

Also of interest was how much more accurate 7 ply is over 5 ply, and the practical agreement (or not?) with the rollouts.

For reference some of the results below:

	is Player 2 score: 0 pip: 167 Money session pip: 167 score: 0 is Player 1
XGID=-b----E-C---eE---c-e----B-:0:0:1:64:0:0:0:0:10
to play 64

1.	7 ply	24/18 13/9	eq: +0.019
	Player: Opponent: 50.59% (G:13.36% B:0.67%) 49.41% (G:13.05% B:0.56%)
2.	7 ply	8/2 6/2	eq: +0.015 (-0.004)
	Player: Opponent: 50.08% (G:14.94% B:0.77%) 49.92% (G:13.78% B:0.62%)
3.	7 ply	24/14	eq: +0.009 (-0.010)
	Player: Opponent: 50.90% (G:11.57% B:0.50%) 49.10% (G:12.76% B:0.44%)

eXtreme Gammon Version: 1.21

	is Player 2 score: 0 pip: 167 Money session Jacoby pip: 167 score: 0 is Player 1
XGID=-b----E-C---eE---c-e----B-:0:0:1:64:0:0:1:0:10
to play 64

1.	7 ply	24/18 13/9	eq: +0.012
	Player: Opponent: 50.55% (G:13.21% B:0.65%) 49.45% (G:13.09% B:0.56%)
2.	7 ply	8/2 6/2	eq: +0.010 (-0.002)
	Player: Opponent: 49.92% (G:15.15% B:0.80%) 50.08% (G:13.76% B:0.61%)
3.	7 ply	24/14	eq: +0.010 (-0.003)
	Player: Opponent: 50.83% (G:11.35% B:0.48%) 49.17% (G:12.46% B:0.43%)

eXtreme Gammon Version: 1.21

	is Player 2 score: 0 pip: 167 Money session pip: 167 score: 0 is Player 1
XGID=-b----E-C---eE---c-e----B-:0:0:1:21:0:0:0:0:10
to play 21

1.	7 ply	24/23 13/11	eq: +0.008
	Player: Opponent: 50.10% (G:13.27% B:0.56%) 49.90% (G:12.66% B:0.52%)
2.	7 ply	13/11 6/5	eq: +0.003 (-0.005)
	Player: Opponent: 50.28% (G:13.64% B:0.59%) 49.72% (G:13.71% B:0.80%)
3.	7 ply	24/21	eq: -0.030 (-0.038)
	Player: Opponent: 49.42% (G:12.00% B:0.52%) 50.58% (G:12.69% B:0.49%)

eXtreme Gammon Version: 1.21

	is Player 2 score: 0 pip: 167 Money session Jacoby pip: 167 score: 0 is Player 1
XGID=-b----E-C---eE---c-e----B-:0:0:1:21:0:0:1:0:10
to play 21

1.	7 ply	13/11 6/5	eq: +0.003
	Player: Opponent: 50.34% (G:13.70% B:0.61%) 49.66% (G:13.95% B:0.82%)
2.	7 ply	24/23 13/11	eq: +0.001 (-0.001)
	Player: Opponent: 50.13% (G:13.10% B:0.55%) 49.87% (G:12.84% B:0.53%)
3.	7 ply	24/21	eq: -0.027 (-0.029)
	Player: Opponent: 49.44% (G:11.65% B:0.48%) 50.56% (G:12.03% B:0.46%)

eXtreme Gammon Version: 1.21

Messages In This Thread

• 4-ply queue, Dec 30 update
  Nack Ballard -- Thursday, 30 December 2010, at 6:14 a.m.
  • ATS opening
    eXtreme Gammon -- Thursday, 30 December 2010, at 1:58 p.m.
    • ATS opening
      David Rockwell -- Thursday, 30 December 2010, at 2:20 p.m.
    • ATS opening
      eXtreme Gammon -- Thursday, 30 December 2010, at 2:27 p.m.
    • ATS opening
      Timothy Chow -- Thursday, 30 December 2010, at 6:41 p.m.
      • ATS opening
        eXtreme Gammon -- Thursday, 30 December 2010, at 9:32 p.m.
        • ATS opening
          mtuhtan -- Thursday, 30 December 2010, at 9:41 p.m.
          • ATS opening
            eXtreme Gammon -- Thursday, 30 December 2010, at 10:01 p.m.
            • ATS opening
              Stick -- Friday, 31 December 2010, at 12:34 a.m.
            • ATS opening
              Bob Koca -- Friday, 31 December 2010, at 11:02 p.m.
        • ATS opening
          Philip Cherrington -- Friday, 31 December 2010, at 2:51 p.m.
          • ATS opening
            Timothy Chow -- Friday, 31 December 2010, at 8:34 p.m.
            • ATS opening
              Philip Cherrington -- Saturday, 1 January 2011, at 12:52 a.m.
              • ATS opening
                Timothy Chow -- Saturday, 1 January 2011, at 4:10 a.m.
                • ATS opening
                  Philip Cherrington -- Saturday, 1 January 2011, at 9:53 a.m.
                  • ATS opening
                    Timothy Chow -- Saturday, 1 January 2011, at 7:31 p.m.
    • ATS opening
      Nack Ballard -- Friday, 31 December 2010, at 12:49 a.m.
      • ATS opening
        eXtreme Gammon -- Friday, 31 December 2010, at 2:18 p.m.
    • ATS opening
      Nack Ballard -- Saturday, 1 January 2011, at 12:40 a.m.
  • 43U-64 - I'll take it
    mtuhtan -- Thursday, 30 December 2010, at 7:19 p.m.
    • You're down, thanks *NM*
      Nack Ballard -- Friday, 31 December 2010, at 11:55 p.m.
      • 54D-63 started
        mtuhtan -- Sunday, 2 January 2011, at 2:27 p.m.
        • 54D-63 NOT started - correction: 43U-53
          mtuhtan -- Sunday, 2 January 2011, at 2:33 p.m.
          • 54D-63 Claude, 43U-53 Miran: Noted, Thx *NM*
            Nack Ballard -- Sunday, 2 January 2011, at 8:51 p.m.