Discussion:
Attack!
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Tim Chow
2020-07-30 03:44:20 UTC
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XGID=abBaBAD--A--cE---c-da-----:1:-1:1:64:0:0:0:0:10

X:Player 1 O:Player 2
Score is X:0 O:0. Unlimited Game
+13-14-15-16-17-18------19-20-21-22-23-24-+
| X O | | O O | +---+
| X O | | O | | 2 |
| X O | | O | +---+
| X | | O |
| X | | |
| |BAR| |
| | O | |
| | | X |
| O | | X |
| O | | X X X O |
| O X | | X X X O X O |
+12-11-10--9--8--7-------6--5--4--3--2--1-+
Pip count X: 115 O: 187 X-O: 0-0
Cube: 2, O own cube
X to play 64

---
Tim Chow
Peter
2020-07-30 12:29:58 UTC
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Post by Tim Chow
XGID=abBaBAD--A--cE---c-da-----:1:-1:1:64:0:0:0:0:10
X:Player 1 O:Player 2
Score is X:0 O:0. Unlimited Game
+13-14-15-16-17-18------19-20-21-22-23-24-+
| X O | | O O | +---+
| X O | | O | | 2 |
| X O | | O | +---+
| X | | O |
| X | | |
| |BAR| |
| | O | |
| | | X |
| O | | X |
| O | | X X X O |
| O X | | X X X O X O |
+12-11-10--9--8--7-------6--5--4--3--2--1-+
Pip count X: 115 O: 187 X-O: 0-0
Cube: 2, O own cube
X to play 64
---
Tim Chow
Yes. 13/3*
Paul Epstein
2020-07-30 13:49:52 UTC
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Post by Peter
Post by Tim Chow
XGID=abBaBAD--A--cE---c-da-----:1:-1:1:64:0:0:0:0:10
X:Player 1 O:Player 2
Score is X:0 O:0. Unlimited Game
+13-14-15-16-17-18------19-20-21-22-23-24-+
| X O | | O O | +---+
| X O | | O | | 2 |
| X O | | O | +---+
| X | | O |
| X | | |
| |BAR| |
| | O | |
| | | X |
| O | | X |
| O | | X X X O |
| O X | | X X X O X O |
+12-11-10--9--8--7-------6--5--4--3--2--1-+
Pip count X: 115 O: 187 X-O: 0-0
Cube: 2, O own cube
X to play 64
---
Tim Chow
Yes. 13/3*
That's a big blunder.
9/3* 13/9 is much better.
Peter
2020-07-30 14:09:08 UTC
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Post by Paul Epstein
Post by Peter
Post by Tim Chow
XGID=abBaBAD--A--cE---c-da-----:1:-1:1:64:0:0:0:0:10
X:Player 1 O:Player 2
Score is X:0 O:0. Unlimited Game
+13-14-15-16-17-18------19-20-21-22-23-24-+
| X O | | O O | +---+
| X O | | O | | 2 |
| X O | | O | +---+
| X | | O |
| X | | |
| |BAR| |
| | O | |
| | | X |
| O | | X |
| O | | X X X O |
| O X | | X X X O X O |
+12-11-10--9--8--7-------6--5--4--3--2--1-+
Pip count X: 115 O: 187 X-O: 0-0
Cube: 2, O own cube
X to play 64
---
Tim Chow
Yes. 13/3*
That's a big blunder.
As Ira Gershwin wrote to George's music -

But now, whenever you're away,
can't sleep nights and I suffer all the day,
I just sit and wonder
if love isn't one big blunder!

But when you're holding me tight,
tingling all through, I feel somehow
I was doing alright,
but I'm doing better than ever now!

And who am I to argue?
Post by Paul Epstein
9/3* 13/9 is much better.
b***@gmail.com
2020-07-30 12:58:44 UTC
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Post by Tim Chow
XGID=abBaBAD--A--cE---c-da-----:1:-1:1:64:0:0:0:0:10
X:Player 1 O:Player 2
Score is X:0 O:0. Unlimited Game
+13-14-15-16-17-18------19-20-21-22-23-24-+
| X O | | O O | +---+
| X O | | O | | 2 |
| X O | | O | +---+
| X | | O |
| X | | |
| |BAR| |
| | O | |
| | | X |
| O | | X |
| O | | X X X O |
| O X | | X X X O X O |
+12-11-10--9--8--7-------6--5--4--3--2--1-+
Pip count X: 115 O: 187 X-O: 0-0
Cube: 2, O own cube
X to play 64
---
Tim Chow
The variants of the opponent having no inner board blot, owning an inner board point (any single point and how the play differs depending on the point owned), and his bar point made (no inner board blot) will be interesting to look at.

Stick
Tim Chow
2020-08-01 15:45:32 UTC
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XGID=abBaBAD--A--cE---c-da-----:1:-1:1:64:0:0:0:0:10

X:Player 1 O:Player 2
Score is X:0 O:0. Unlimited Game
+13-14-15-16-17-18------19-20-21-22-23-24-+
| X O | | O O | +---+
| X O | | O | | 2 |
| X O | | O | +---+
| X | | O |
| X | | |
| |BAR| |
| | O | |
| | | X |
| O | | X |
| O | | X X X O |
| O X | | X X X O X O |
+12-11-10--9--8--7-------6--5--4--3--2--1-+
Pip count X: 115 O: 187 X-O: 0-0
Cube: 2, O own cube
X to play 64

I only rolled out one variant in advance. Perhaps Stick can roll out his
suggested variants and post the results on BGOnline.

1. Rollout¹ 13/3* eq:+0.733
Player: 69.17% (G:44.20% B:8.51%)
Opponent: 30.83% (G:3.94% B:0.16%)
Confidence: ±0.012 (+0.721..+0.745) - [100.0%]

2. Rollout¹ 13/7 9/5 eq:+0.643 (-0.090)
Player: 66.63% (G:40.83% B:7.74%)
Opponent: 33.37% (G:2.70% B:0.13%)
Confidence: ±0.012 (+0.631..+0.655) - [0.0%]

¹ 1296 Games rolled with Variance Reduction.
Dice Seed: 271828
Moves: 3-ply, cube decisions: XG Roller

eXtreme Gammon Version: 2.19.207.pre-release

-------
Variant
-------

XGID=abBaBAD--A--cE---c-cb-----:1:-1:1:64:0:0:0:0:10

X:Player 1 O:Player 2
Score is X:0 O:0. Unlimited Game
+13-14-15-16-17-18------19-20-21-22-23-24-+
| X O | | O O | +---+
| X O | | O O | | 2 |
| X O | | O | +---+
| X | | |
| X | | |
| |BAR| |
| | O | |
| | | X |
| O | | X |
| O | | X X X O |
| O X | | X X X O X O |
+12-11-10--9--8--7-------6--5--4--3--2--1-+
Pip count X: 115 O: 186 X-O: 0-0
Cube: 2, O own cube
X to play 64

1. Rollout¹ 13/7 9/5 eq:+0.553
Player: 64.84% (G:37.91% B:6.35%)
Opponent: 35.16% (G:3.20% B:0.14%)
Confidence: ±0.006 (+0.547..+0.559) - [100.0%]

2. Rollout¹ 13/3* eq:+0.481 (-0.072)
Player: 63.69% (G:37.38% B:6.35%)
Opponent: 36.31% (G:6.68% B:0.37%)
Confidence: ±0.006 (+0.475..+0.487) - [0.0%]

¹ 5184 Games rolled with Variance Reduction.
Dice Seed: 271828
Moves: 3-ply, cube decisions: XG Roller

eXtreme Gammon Version: 2.19.207.pre-release

---
Tim Chow

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