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Who cares XII ? - Rollout and question

Posted By: pierrez
Date: Friday, 14 August 2026, at 4:56 p.m.

In Response To: Who cares XII ? (pierrez)

Why not, close the prime when the White anchor is not at the edge of the prime ?
And then an easy road to victory. Even if some potholes arise, the prime will protect Blue.

No way. when you are ahead in the race, race !!





White is Joueur 2

score: 0
pip: 154
1 point match
pip: 145
score: 0

Blue is Joueur 1
XGID=--b-B-D-C--BdB---d-cAAb---:0:0:1:66:0:0:0:1:10
Blue to play 66

1.Rollout121/9 20/8eq: +0,491
Player:
Opponent:		74,55% (G:18,71% B:1,42%)
25,45% (G:3,78% B:0,24%)		Conf.: ± 0,004 (+0,487...+0,495) - [100,0%]
Duration: 26 minutes 06 seconds
2.Rollout113/7(2) 11/5(2)eq: +0,409 (-0,082)
Player:
Opponent:		70,43% (G:30,25% B:6,83%)
29,57% (G:6,13% B:0,65%)		Conf.: ± 0,006 (+0,403...+0,414) - [0,0%]
Duration: 24 minutes 34 seconds
3.4-ply21/15 20/14 11/5(2)eq: +0,391 (-0,100)
Player:
Opponent:		69,53% (G:17,02% B:0,78%)
30,47% (G:6,01% B:0,23%)
4.4-ply20/8 11/5(2)eq: +0,380 (-0,111)
Player:
Opponent:		69,02% (G:19,82% B:0,98%)
30,98% (G:5,30% B:0,17%)
5.4-ply21/15 20/14 13/7(2)eq: +0,375 (-0,116)
Player:
Opponent:		68,75% (G:13,98% B:0,70%)
31,25% (G:6,58% B:0,23%)
1 1296 Games rolled with Variance Reduction.
Moves: 3-ply, cube decisions: XG Roller

eXtreme Gammon Version: 2.10, MET: Kazaross XG2

The same position ingested in Sage Pro is giving the same best move, but making the prime is only a 46 millipoint error, not anymore a blunder as highlighted by XG2.
Which engine is the most reliable ?

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