novaBBS - rec.games.backgammon - Rollout: Double 2's

Double 2's

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From: tchow12...@yahoo.com (Timothy Chow)
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Subject: Double 2's
Date: Wed, 14 Feb 2024 08:40:08 -0500
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by: Timothy Chow - Wed, 14 Feb 2024 13:40 UTC

XGID=--a--BEaC---dC---c-db---B-:0:0:1:22:0:0:0:0:10

Score is X:0 O:0. Unlimited Game
+13-14-15-16-17-18------19-20-21-22-23-24-+
| X O | | O O X |
| X O | | O O X |
| X O | | O |
| | | O |
| | | |
| |BAR| |
| | | X |
| O | | X |
| O X | | X |
| O X | | X X |
| O X O | | X X O |
+12-11-10--9--8--7-------6--5--4--3--2--1-+
Pip count X: 151 O: 151 X-O: 0-0
Cube: 1
X to play 22

---
Tim Chow

Rollout: Double 2's

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From: tchow12...@yahoo.com (Timothy Chow)
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Subject: Rollout: Double 2's
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by: Timothy Chow - Mon, 19 Feb 2024 01:31 UTC

XGID=--a--BEaC---dC---c-db---B-:0:0:1:22:0:0:0:0:10

An early double 2's is often best used to make new points and/or to
advance an anchor, so 24/22(2) 6/4(2) is a natural candidate here.
While XG doesn't think that's the worst move in the world, it prefers
to attack with 6/2*(2). It could lead to a blitz and it comes with
minimal risk.

1. Rollout¹ 6/2*(2) eq:+0.261
Player: 53.73% (G:24.80% B:0.63%)
Opponent: 46.27% (G:11.98% B:0.60%)
Confidence: ±0.016 (+0.245..+0.277) - [100.0%]

2. Rollout¹ 24/22(2) 6/4(2) eq:+0.217 (-0.045)
Player: 54.13% (G:17.61% B:0.45%)
Opponent: 45.87% (G:9.03% B:0.34%)
Confidence: ±0.012 (+0.204..+0.229) - [0.0%]

3. Rollout¹ 6/4(2) 6/2* eq:+0.192 (-0.069)
Player: 52.53% (G:22.43% B:0.68%)
Opponent: 47.47% (G:12.99% B:0.70%)
Confidence: ±0.015 (+0.177..+0.207) - [0.0%]

4. Rollout¹ 24/22 8/4 6/4 eq:+0.150 (-0.111)
Player: 52.36% (G:19.14% B:0.58%)
Opponent: 47.64% (G:11.38% B:0.50%)
Confidence: ±0.013 (+0.137..+0.163) - [0.0%]

5. Rollout¹ 24/22 6/4(3) eq:+0.142 (-0.119)
Player: 52.35% (G:18.46% B:0.65%)
Opponent: 47.65% (G:11.89% B:0.47%)
Confidence: ±0.015 (+0.127..+0.157) - [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

---
Tim Chow

Are you a turtle?

interests / rec.games.backgammon / Rollout: Double 2's

interests / rec.games.backgammon / Rollout: Double 2's

Subject	Author
Double 2's	Timothy Chow
Rollout: Double 2's	Timothy Chow