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I just added a third option 12/6, 15-11 and voted for it ;-) Seems to do what we want and allows all big doublets to work ok.
spoiler tag added
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I like two spares on the 6 point after 12/6 10/6.
What will beat us here is something like 66 followed by 65. Look at that sequence after 12/6 10/6 and 12/6 15/11.
we're talking small potatoes, but 12/6 15/11 leaves an odd number of checkers on the 6, and is not as even-ended as putting two there.
XGR++
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We're continuing to split hairs here.
XGID=abBBBBBB--A-A--A-e--b--ad-:0:0:1:64:4:0:1:5:10
X:Player 1 O:Player 2
Score is X:4 O:0 5 pt.(s) match.
+13-14-15-16-17-18------19-20-21-22-23-24-+
| X O | | O O O |
| O | | O O |
| O | | O |
| O | | O |
| O | | |
| |BAR| |
| | O | |
| | | |
| | | |
| X | | X X X X X O |
| X X X | | X X X X X O |
+12-11-10--9--8--7-------6--5--4--3--2--1-+
Pip count X: 91 O: 129 X-O: 4-0/5 Crawford
Cube: 1
X to play 64
1. XG Roller++ 15/11 10/4 eq:+0.880
Player: 94.01% (G:42.20% B:3.25%)
Opponent: 5.99% (G:0.03% B:0.00%)
2. XG Roller++ 15/9 12/8 eq:+0.880
Player: 94.00% (G:42.56% B:3.31%)
Opponent: 6.00% (G:0.03% B:0.00%)
3. XG Roller++ 12/8 10/4 eq:+0.879 (-0.001)
Player: 93.98% (G:42.36% B:3.30%)
Opponent: 6.02% (G:0.03% B:0.00%)
4. XG Roller++ 15/5 eq:+0.879 (-0.001)
Player: 93.97% (G:42.38% B:3.30%)
Opponent: 6.03% (G:0.02% B:0.00%)
5. XG Roller++ 15/11 12/6 eq:+0.879 (-0.002)
Player: 93.93% (G:42.35% B:3.29%)
Opponent: 6.07% (G:0.02% B:0.00%)
6. XG Roller++ 15/9 10/6 eq:+0.879 (-0.002)
Player: 93.93% (G:42.05% B:3.22%)
Opponent: 6.07% (G:0.03% B:0.00%)
7. XG Roller++ 12/6 10/6 eq:+0.876 (-0.004)
Player: 93.80% (G:41.89% B:3.23%)
Opponent: 6.20% (G:0.03% B:0.00%)
8. XG Roller++ 15/9 7/3 eq:+0.876 (-0.005)
Player: 93.78% (G:43.30% B:3.51%)
Opponent: 6.22% (G:0.07% B:0.00%)
9. XG Roller++ 10/4 7/3 eq:+0.874 (-0.007)
Player: 93.68% (G:43.23% B:3.56%)
Opponent: 6.32% (G:0.07% B:0.00%)
10. XG Roller++ 12/6 7/3 eq:+0.873 (-0.008)
Player: 93.64% (G:42.90% B:3.48%)
Opponent: 6.36% (G:0.07% B:0.00%)
eXtreme Gammon Version: 2.10, MET: Kazaross XG2