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XG and the coup classique

Posted By: PINO
Date: Wednesday, 25 November 2015, at 7:45 p.m.

I don't know if this is a well-known bug in XG. It played an ace-point game at DMP, I took off 14 checkers, it hit the 15th and went mad, playing 6/5 in this position:

is PINO score: 0 pip: 25

1 point match

pip: 150 score: 0 is eXtremeGammon

XGID=----aba--------a-bbbbb---A:0:0:-1:41:0:0:0:1:10

to play 41

1.	XG Roller++	10/9 6/2	eq: -0,903
	Player: Opponent: 4,84% (G:0,00% B:0,00%) 95,16% (G:50,96% B:37,72%)
2.	XG Roller+	21/20 19/15	eq: -0,881 (+0,022)
	Player: Opponent: 5,95% (G:0,00% B:0,00%) 94,05% (G:44,85% B:31,14%)
3.	XG Roller+	19/15 6/5	eq: -0,882 (+0,021)
	Player: Opponent: 5,90% (G:0,00% B:0,00%) 94,10% (G:49,38% B:38,20%)
4.	XG Roller+	20/16 6/5	eq: -0,882 (+0,021)
	Player: Opponent: 5,90% (G:0,00% B:0,00%) 94,10% (G:52,41% B:35,50%)
5.	4-ply	21/17 6/5	eq: -0,876 (+0,027)
	Player: Opponent: 6,20% (G:0,00% B:0,00%) 93,80% (G:37,12% B:25,18%)

eXtreme Gammon Version: 2.10, MET: Kazaross XG2

Under XG++, that move was considered inferior to plays that keep the 5-prime but only marginally. That's probably because in one of the upcoming moves it would abandon the 6-point anyway.

In the actual game, XG missed several occasions to make a 5- or 6-prime, keeping the 6-point open for my escapes.

Messages In This Thread

• XG and the coup classique
  PINO -- Wednesday, 25 November 2015, at 7:45 p.m.
  • XG and the coup classique
    Timothy Chow -- Wednesday, 25 November 2015, at 10:23 p.m.
    • XG and the coup classique
      Karol Szczerek -- Thursday, 26 November 2015, at 5:49 a.m.
  • XG and the coup classique
    Michael Depreli -- Thursday, 26 November 2015, at 8:35 a.m.
  • XG and the coup classique
    hominid -- Wednesday, 2 December 2015, at 12:38 a.m.