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interests / rec.games.backgammon / How to blitz

SubjectAuthor
* How to blitzTimothy Chow
+- Re: How to blitzDon Epi
`- Rollout: How to blitzTimothy Chow

1
How to blitz

<t72lni$h5a$2@dont-email.me>

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From: tchow12...@yahoo.com (Timothy Chow)
Newsgroups: rec.games.backgammon
Subject: How to blitz
Date: Mon, 30 May 2022 10:52:31 -0400
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 by: Timothy Chow - Mon, 30 May 2022 14:52 UTC

XGID=a--BA-CCCa-Ab----cbd-B-b--:1:-1:1:66:0:0:0:0:10

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-+
| O O | | O X O | +---+
| O O | | O X O | | 2 |
| O | | O | +---+
| | | O |
| | | |
| |BAR| |
| | O | |
| | | |
| X X | | X |
| O X X | | X X |
| O X O X X | | X X X |
+12-11-10--9--8--7-------6--5--4--3--2--1-+
Pip count X: 126 O: 133 X-O: 0-0
Cube: 2, O own cube
X to play 66

---
Tim Chow

Re: How to blitz

<1381240457@darkrealms.ca>

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Newsgroups: rec.games.backgammon
From: NOSPAM.D...@darkrealms.ca (Don Epi)
Subject: Re: How to blitz
Message-ID: <1381240457@darkrealms.ca>
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 by: Don Epi - Tue, 31 May 2022 19:11 UTC

TC> X:Player 1 O:Player 2
TC> Score is X:0 O:0. Unlimited Game
TC> +13-14-15-16-17-18------19-20-21-22-23-24-+
TC> | O O | | O X O | +---+
TC> | O O | | O X O | | 2 |
TC> | O | | O | +---+
TC> | | | O |
TC> | | | |
TC> | |BAR| |
TC> | | O | |
TC> | | | |
TC> | X X | | X |
TC> | O X X | | X X |
TC> | O X O X X | | X X X |
TC> +12-11-10--9--8--7-------6--5--4--3--2--1-+
TC> Pip count X: 126 O: 133 X-O: 0-0
TC> Cube: 2, O own cube
TC> X to play 66

21-9* / 8-2(2) --- I think thats strong enough, but of course, Im
learning
here. BTW, nice to meet you, guys. Posting it through a BBS.

Rollout: How to blitz

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From: tchow12...@yahoo.com (Timothy Chow)
Newsgroups: rec.games.backgammon
Subject: Rollout: How to blitz
Date: Wed, 1 Jun 2022 09:28:25 -0400
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 by: Timothy Chow - Wed, 1 Jun 2022 13:28 UTC

XGID=a--BA-CCCa-Ab----cbd-B-b--:1:-1:1:66:0:0:0:0:10

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-+
| O O | | O X O | +---+
| O O | | O X O | | 2 |
| O | | O | +---+
| | | O |
| | | |
| |BAR| |
| | O | |
| | | |
| X X | | X |
| O X X | | X X |
| O X O X X | | X X X |
+12-11-10--9--8--7-------6--5--4--3--2--1-+
Pip count X: 126 O: 133 X-O: 0-0
Cube: 2, O own cube
X to play 66

The all-out blitzing play is to hit and make the 2pt. On the other
hand, it leaves five blots around the board, and loses more often
compared to the DMP play of 21/9*(2). Does the all-out blitz win
enough extra gammons? According to the rollout below, the answer
is yes. O will be twice up, and even if she enters with 41 or 54,
it will still be a roughly even game, so the upside outweighs the
downside.

1. Rollout¹ 21/9* 8/2(2) eq:+0.867
Player: 76.33% (G:49.76% B:0.77%)
Opponent: 23.67% (G:7.27% B:1.01%)
Confidence: ±0.008 (+0.859..+0.874) - [100.0%]

2. Rollout¹ 21/9*(2) eq:+0.798 (-0.069)
Player: 78.67% (G:33.72% B:0.72%)
Opponent: 21.33% (G:3.99% B:0.14%)
Confidence: ±0.007 (+0.790..+0.805) - [0.0%]

3. Rollout¹ 21/9* 7/1(2) eq:+0.783 (-0.083)
Player: 73.38% (G:50.37% B:0.52%)
Opponent: 26.62% (G:8.92% B:1.23%)
Confidence: ±0.007 (+0.776..+0.790) - [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

---
Tim Chow

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