BGonline.org Forums

XG shows negative MWC?

Posted By: David Levy
Date: Tuesday, 10 May 2016, at 9:35 p.m.

XG flagged my opponent's play as a .22 error. No way, I thought. There's not much match equity at stake. So I switched from normalized equity to MWC. I couldn't figure out how to display the MWC here on BGOnline, but 21/17 18/15 has MWC of 0.53% and 21/14 has MWC of -1.53%. Yes, -1.53%! How does XG come up with a negative MWC?

This happens on XG+, XG++, and the modest rollout shown here.

		White is Player 2 score: 6 pip: 26 7 point match Crawford pip: 164 score: 0 Blue is Player 1
XGID=-DEBcbAa----------bb-bc---:0:0:-1:43:6:0:1:7:10
Blue to play 43

1.	Rollout1	21/17 18/15	eq: -0.941
	Player: Opponent: 3.30% (G:0.00% B:0.00%) 96.70% (G:95.39% B:0.55%) Conf.: ± 0.001 (-0.942...-0.940) - [100.0%] Duration: 9.5 seconds
2.	Rollout1	21/14	eq: -1.169 (-0.228)
	Player: Opponent: 3.28% (G:0.00% B:0.00%) 96.72% (G:95.34% B:0.35%) Conf.: ± 0.001 (-1.170...-1.168) - [0.0%] Duration: 8.4 seconds
1 1296 Games rolled with Variance Reduction. Moves: 3-ply, cube decisions: XG Roller

eXtreme Gammon Version: 2.10, MET: Kazaross XG2

Messages In This Thread

• XG shows negative MWC?
  David Levy -- Tuesday, 10 May 2016, at 9:35 p.m.
  • XG shows negative MWC?
    Keene -- Tuesday, 10 May 2016, at 9:50 p.m.
  • XGR++
    neilkaz -- Tuesday, 10 May 2016, at 10:30 p.m.
  • Not what my XG shows
    John O'Hagan -- Tuesday, 10 May 2016, at 10:33 p.m.
  • So what setting(s) might I have wrong?
    David Levy -- Tuesday, 10 May 2016, at 10:36 p.m.
    • So what setting(s) might I have wrong?
      benf -- Tuesday, 10 May 2016, at 10:59 p.m.
      • Reboot eliminates negatives MWC
        David Levy -- Wednesday, 11 May 2016, at 12:11 a.m.
  • XG shows negative MWC?
    Chris Yep -- Tuesday, 10 May 2016, at 11:01 p.m.