Rocksolid Light

Welcome to novaBBS (click a section below)

mail  files  register  newsreader  groups  login

Message-ID:  

The universe does not have laws -- it has habits, and habits can be broken.

interests / rec.games.backgammon / Rollout: 4pt vs 7pt 6

SubjectAuthor
* 4pt vs 7pt 6Timothy Chow
+- Re: 4pt vs 7pt 6ah....Clem
`- Rollout: 4pt vs 7pt 6Timothy Chow

1
4pt vs 7pt 6

<u6kdgl$18j2g$2@dont-email.me>

  copy mid

https://www.novabbs.com/interests/article-flat.php?id=12252&group=rec.games.backgammon#12252

  copy link   Newsgroups: rec.games.backgammon
Path: i2pn2.org!i2pn.org!eternal-september.org!news.eternal-september.org!.POSTED!not-for-mail
From: tchow12...@yahoo.com (Timothy Chow)
Newsgroups: rec.games.backgammon
Subject: 4pt vs 7pt 6
Date: Sat, 17 Jun 2023 09:47:00 -0400
Organization: A noiseless patient Spider
Lines: 22
Message-ID: <u6kdgl$18j2g$2@dont-email.me>
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8; format=flowed
Content-Transfer-Encoding: 7bit
Injection-Date: Sat, 17 Jun 2023 13:47:01 -0000 (UTC)
Injection-Info: dont-email.me; posting-host="37e5a4c50c85096746e8b18bc82f3a23";
logging-data="1330256"; mail-complaints-to="abuse@eternal-september.org"; posting-account="U2FsdGVkX18vEFE8/dqWafFvD9xXFZoiedYzr37qq50="
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:102.0) Gecko/20100101
Thunderbird/102.12.0
Cancel-Lock: sha1:XE01k1yrVZp1RPd3XffeqORk5+c=
Content-Language: en-US
 by: Timothy Chow - Sat, 17 Jun 2023 13:47 UTC

XGID=-bB---DAC---bCaaab-bb-b-B-:1:1:1:42:0:0:0:0:10

Score is X:0 O:0. Unlimited Game
+13-14-15-16-17-18------19-20-21-22-23-24-+
| X O O O O | | O O O X |
| X O | | O O O X |
| X | | |
| | | |
| | | |
| |BAR| |
| | | |
| | | X |
| X | | X | +---+
| O X | | X X O | | 2 |
| O X X | | X X O | +---+
+12-11-10--9--8--7-------6--5--4--3--2--1-+
Pip count X: 146 O: 148 X-O: 0-0
Cube: 2, X own cube
X to play 42

---
Tim Chow

Re: 4pt vs 7pt 6

<u6kgiv$18tno$1@dont-email.me>

  copy mid

https://www.novabbs.com/interests/article-flat.php?id=12253&group=rec.games.backgammon#12253

  copy link   Newsgroups: rec.games.backgammon
Path: i2pn2.org!i2pn.org!eternal-september.org!news.eternal-september.org!.POSTED!not-for-mail
From: ah_c...@ymail.com (ah....Clem)
Newsgroups: rec.games.backgammon
Subject: Re: 4pt vs 7pt 6
Date: Sat, 17 Jun 2023 10:39:27 -0400
Organization: The Future Fair
Lines: 34
Message-ID: <u6kgiv$18tno$1@dont-email.me>
References: <u6kdgl$18j2g$2@dont-email.me>
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8; format=flowed
Content-Transfer-Encoding: 8bit
Injection-Date: Sat, 17 Jun 2023 14:39:28 -0000 (UTC)
Injection-Info: dont-email.me; posting-host="cc4dfd927142d8e1860ea14cc583f68c";
logging-data="1341176"; mail-complaints-to="abuse@eternal-september.org"; posting-account="U2FsdGVkX1+tVWm93RLJliKN4brKJTzv"
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:102.0) Gecko/20100101
Thunderbird/102.12.0
Cancel-Lock: sha1:lEGLkRuL5F0p7SI8vhk4N33vGnY=
In-Reply-To: <u6kdgl$18j2g$2@dont-email.me>
Content-Language: en-US
 by: ah....Clem - Sat, 17 Jun 2023 14:39 UTC

On 6/17/2023 9:47 AM, Timothy Chow wrote:
> XGID=-bB---DAC---bCaaab-bb-b-B-:1:1:1:42:0:0:0:0:10
>
> Score is X:0 O:0. Unlimited Game
>  +13-14-15-16-17-18------19-20-21-22-23-24-+
>  | X  O  O  O  O    |   | O  O     O     X |
>  | X           O    |   | O  O     O     X |
>  | X                |   |                  |
>  |                  |   |                  |
>  |                  |   |                  |
>  |                  |BAR|                  |
>  |                  |   |                  |
>  |                  |   | X                |
>  |             X    |   | X                | +---+
>  | O           X    |   | X           X  O | | 2 |
>  | O           X  X |   | X           X  O | +---+
>  +12-11-10--9--8--7-------6--5--4--3--2--1-+
> Pip count  X: 146  O: 148 X-O: 0-0
> Cube: 2, X own cube
> X to play 42

If the variant in the position #4 is a hint, having blots laying around
waiting to be picked up favors making the four point. OTOH, if it's
looking like a priming battle, the bar point is better.

Both seem to apply here, but I'll make the bar point since leaving the
blot on the bar invites O to escape with tempo when we're out-boarded.

13/7.

--
Ah....Clem
The future is fun, the future is fair.

Rollout: 4pt vs 7pt 6

<u6pr9i$23jts$1@dont-email.me>

  copy mid

https://www.novabbs.com/interests/article-flat.php?id=12258&group=rec.games.backgammon#12258

  copy link   Newsgroups: rec.games.backgammon
Path: i2pn2.org!i2pn.org!eternal-september.org!news.eternal-september.org!.POSTED!not-for-mail
From: tchow12...@yahoo.com (Timothy Chow)
Newsgroups: rec.games.backgammon
Subject: Rollout: 4pt vs 7pt 6
Date: Mon, 19 Jun 2023 11:12:49 -0400
Organization: A noiseless patient Spider
Lines: 83
Message-ID: <u6pr9i$23jts$1@dont-email.me>
References: <u6kdgl$18j2g$2@dont-email.me>
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8; format=flowed
Content-Transfer-Encoding: 8bit
Injection-Date: Mon, 19 Jun 2023 15:12:50 -0000 (UTC)
Injection-Info: dont-email.me; posting-host="fea5a9159b9326a791cbdb227c55a14a";
logging-data="2215868"; mail-complaints-to="abuse@eternal-september.org"; posting-account="U2FsdGVkX1/5jAfnY11vXf+cnGg8WXge/MMwIZpEQTc="
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:102.0) Gecko/20100101
Thunderbird/102.12.0
Cancel-Lock: sha1:SksXShxMNRkH6I7eOJXujfMVI1I=
Content-Language: en-US
In-Reply-To: <u6kdgl$18j2g$2@dont-email.me>
 by: Timothy Chow - Mon, 19 Jun 2023 15:12 UTC

XGID=-bB---DAC---bCaaab-bb-b-B-:1:1:1:42:0:0:0:0:10

Score is X:0 O:0. Unlimited Game
+13-14-15-16-17-18------19-20-21-22-23-24-+
| X O O O O | | O O O X |
| X O | | O O O X |
| X | | |
| | | |
| | | |
| |BAR| |
| | | |
| | | X |
| X | | X | +---+
| O X | | X X O | | 2 |
| O X X | | X X O | +---+
+12-11-10--9--8--7-------6--5--4--3--2--1-+
Pip count X: 146 O: 148 X-O: 0-0
Cube: 2, X own cube
X to play 42

Here's another case where covering the blot seemed automatic to me
OTB. But XG disagrees. With his 2pt made, X's position is more
conducive to attacking than to priming. Also note that many of O's
sixes play well anyway.

1. Rollout¹ 8/4 6/4 eq:-0.203
Player: 37.61% (G:13.50% B:1.11%)
Opponent: 62.39% (G:22.32% B:1.95%)
Confidence: ±0.011 (-0.215..-0.192) - [100.0%]

2. Rollout¹ 13/7 eq:-0.279 (-0.075)
Player: 35.23% (G:11.39% B:0.77%)
Opponent: 64.77% (G:21.95% B:1.39%)
Confidence: ±0.009 (-0.288..-0.269) - [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=-b---BDAC---bCaaab-bb-b-B-:1:1:1:42:0:0:0:0:10

Score is X:0 O:0. Unlimited Game
+13-14-15-16-17-18------19-20-21-22-23-24-+
| X O O O O | | O O O X |
| X O | | O O O X |
| X | | |
| | | |
| | | |
| |BAR| |
| | | |
| | | X |
| X | | X | +---+
| O X | | X X O | | 2 |
| O X X | | X X O | +---+
+12-11-10--9--8--7-------6--5--4--3--2--1-+
Pip count X: 152 O: 148 X-O: 0-0
Cube: 2, X own cube
X to play 42

1. Rollout¹ 8/4 6/4 eq:+0.158
Player: 48.93% (G:17.37% B:1.40%)
Opponent: 51.07% (G:18.37% B:1.59%)
Confidence: ±0.009 (+0.149..+0.167) - [91.0%]

2. Rollout¹ 13/7 eq:+0.150 (-0.008)
Player: 48.74% (G:16.51% B:1.30%)
Opponent: 51.26% (G:17.95% B:1.16%)
Confidence: ±0.008 (+0.141..+0.158) - [9.0%]

¹ 2592 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

1
server_pubkey.txt

rocksolid light 0.9.81
clearnet tor