ユーザー名: パスワード:
新ユーザー登録
管理人: SueQ , coan.net 
 Backgammon

Backgammon and variants.

Backgammon Links


1ページあたりのメッセージ件数:
掲示板表
この掲示板でメッセージを作成にはポーン会員以上の会員レベルが必要となりますので、あなたは作成権限が有りません。
モード: 誰でも投稿可能
メールの内容の検索:  

4. 11月 2009, 01:25:58
pedestrian 
件名: Re: Bias
alanback: I just checked a small, random sample of games: the 13 games (or matches) of regular Backgammon played by alanback in 2009. Out of these 13, 6 games start with identical rolls by black and white.

I know, it's hardly conclusive. But still interesting.

4. 11月 2009, 02:04:34
pgt 
件名: Re: Bias
pedestrian: I just did the same exercise on currently open games and 7 out of 15 had identical rolls for the first move

4. 11月 2009, 02:22:04
grenv 
件名: Re: Bias
pgt: Just to be clear... is the suspected behaviour that the first move for each player is the same? So if I roll a 3-1 so does my opponent?

If so I checked my last 7 games and didn't find it at all...

Expected would be 1 in 9?

4. 11月 2009, 02:25:50
AbigailII 
件名: Re: Bias
grenv: No, expected would be 1 in 18. The first player doesn't roll a double, which means that out of all the 36 possible rolls of the second player, only 2 match the roll of the first player.

4. 11月 2009, 02:37:23
grenv 
件名: Re: Bias
AbigailII: Ok, but if you take out the doubles, there are only 30 possible rolls I guess... right? so 1 in 15 then?

that makes sense... first die 2 in 6, second 1 in 5... 3x5 = 15

4. 11月 2009, 09:27:53
AbigailII 
件名: Re: Bias
grenv: Ok, but if you take out the doubles, there are only 30 possible rolls


But why do you take out the doubles? The second player can roll a double, so the second player has 36 different rolls. 2 of them can match the rolls of the first player.


4. 11月 2009, 02:30:52
AbigailII 
件名: Re: Bias
pgt: Of my current open backgammon games, 6 out of 10 had identical rolls for both players.

日時
オンライン友達
気に入り掲示板
同好会
今日のアドバイス
著作権 © 2002 - 2024 Filip Rachunek.
上へ