XGID=-bBB-CDBB-----a-bbabb--c--:1:-1:1:43:0:0:0:0:10
Score is X:0 O:0. Unlimited Game
+13-14-15-16-17-18------19-20-21-22-23-24-+
| O O O O | | O O O | +---+
| O O | | O O O | | 2 |
| | | O | +---+
| | | |
| | | |
| |BAR| |
| | | |
| | | X |
| | | X X |
| X X | | X X X X O |
| X X | | X X X X O |
+12-11-10--9--8--7-------6--5--4--3--2--1-+
Pip count X: 79 O: 128 X-O: 0-0
Cube: 2, O own cube
X to play 43
Like ah_clem, I didn't think that leaving a direct shot was the right
idea here. But XG does. O is playing a phantom 1-4 backgame, and
8/4 7/4 eliminates the phantom. This may be regarded as a type of
pay now or pay later problem. You might even think of it as a "Bagai" position, after Jeremy Bagai, who posted some problems to BGOnline
on a similar theme, back in the day.
http://alum.mit.edu/www/tchow/cg/www.bgonline.org/forums/97723.html
Of course, if O's offensive position is sufficiently strong, then
playing safe would be indicated; see the variant.
1. Rollout¹ 8/4 7/4 eq:+0.675
Player: 77.98% (G:21.23% B:1.00%)
Opponent: 22.02% (G:1.61% B:0.03%)
Confidence: ±0.006 (+0.670..+0.681) - [100.0%]
2. Rollout¹ 8/5 6/2 eq:+0.611 (-0.064)
Player: 77.24% (G:14.94% B:0.62%)
Opponent: 22.76% (G:0.91% B:0.03%)
Confidence: ±0.006 (+0.606..+0.617) - [0.0%]
3. Rollout¹ 8/5 8/4 eq:+0.608 (-0.067)
Player: 75.87% (G:20.10% B:0.84%)
Opponent: 24.13% (G:2.34% B:0.08%)
Confidence: ±0.006 (+0.602..+0.614) - [0.0%]
4. Rollout¹ 7/4 7/3 eq:+0.591 (-0.084)
Player: 75.31% (G:20.06% B:0.87%)
Opponent: 24.69% (G:2.09% B:0.08%)
Confidence: ±0.006 (+0.585..+0.597) - [0.0%]
5. Rollout¹ 6/3 6/2 eq:+0.589 (-0.086)
Player: 77.20% (G:13.10% B:0.48%)
Opponent: 22.80% (G:1.01% B:0.03%)
Confidence: ±0.005 (+0.584..+0.594) - [0.0%]
¹ 1296 Games rolled with Variance Reduction.
Dice Seed: 271828
Moves: 3-ply, cube decisions: XG Roller
eXtreme Gammon Version: 2.19.211.pre-release
-------
Variant
-------
XGID=-bBB-CDBB-------bbbbb--c--:1:-1:1:43:0:0:0:0:10
Score is X:0 O:0. Unlimited Game
+13-14-15-16-17-18------19-20-21-22-23-24-+
| O O O | | O O O | +---+
| O O O | | O O O | | 2 |
| | | O | +---+
| | | |
| | | |
| |BAR| |
| | | |
| | | X |
| | | X X |
| X X | | X X X X O |
| X X | | X X X X O |
+12-11-10--9--8--7-------6--5--4--3--2--1-+
Pip count X: 79 O: 124 X-O: 0-0
Cube: 2, O own cube
X to play 43
1. Rollout¹ 6/3 6/2 eq:+0.592
Player: 77.98% (G:10.81% B:0.36%)
Opponent: 22.02% (G:0.87% B:0.03%)
Confidence: ±0.004 (+0.588..+0.596) - [70.8%]
2. Rollout¹ 8/5 6/2 eq:+0.590 (-0.002)
Player: 77.44% (G:12.44% B:0.45%)
Opponent: 22.56% (G:0.97% B:0.03%)
Confidence: ±0.005 (+0.586..+0.595) - [29.2%]
3. Rollout¹ 8/4 7/4 eq:+0.565 (-0.027)
Player: 75.86% (G:15.71% B:0.51%)
Opponent: 24.14% (G:1.83% B:0.06%)
Confidence: ±0.006 (+0.560..+0.571) - [0.0%]
¹ 905 Games rolled with Variance Reduction.
Dice Seed: 271828
Moves: 4-ply, cube decisions: XG Roller+
Search interval: Large
eXtreme Gammon Version: 2.19.211.pre-release
---
Tim Chow
--- SoupGate-Win32 v1.05
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