tag:blogger.com,1999:blog-6270380615395644848.post2018540969098074624..comments2023-06-15T14:30:53.063+02:00Comments on Backgammon for Beginners: Playing 54, to split or not?Mhttp://www.blogger.com/profile/07019590995775769366noreply@blogger.comBlogger13125tag:blogger.com,1999:blog-6270380615395644848.post-19996804114840177512011-05-17T12:38:31.931+02:002011-05-17T12:38:31.931+02:00traxxy
1a, I would cube as white.
1b, I would pas...<b>traxxy</b><br /><br />1a, I would cube as white.<br />1b, I would pass as black.<br />2a, I would not cube as white<br />2b, I would probably take and redouble as black<br />I am not sure in any of the situations..Mhttps://www.blogger.com/profile/07019590995775769366noreply@blogger.comtag:blogger.com,1999:blog-6270380615395644848.post-54642067855933347232011-05-17T12:37:29.905+02:002011-05-17T12:37:29.905+02:00pthalo
1a double - fairly sure
1b no take - fairl...<b>pthalo</b><br /><br />1a double - fairly sure<br />1b no take - fairly sure<br />2a double - no clue so i dont change anything<br />2b no take - no clue so i dont change anything<br /><br />The method I use is the one where you add 2 pips for each checker more than 1 on 1pt, 1 pip for each checker more than 1 on 2pt, 1 pip for each checker more than 3 on 3pt, 1 pip for each empty space on 4,5,6, and then add 1/7th (rounded down) for player on roll. in this case, most of that doesn't apply, just the added 1/7th which gives us 111 to 114.<br /><br />then the rule is: double if my count exceeds opponents by no more than 4. (it exceeds by 3 so i double). redouble if my count exceed opponent's by no more than 3 (not applicable). take if doubler's count exceeds mine by at least 2 (it does).Mhttps://www.blogger.com/profile/07019590995775769366noreply@blogger.comtag:blogger.com,1999:blog-6270380615395644848.post-63067635836163263502011-05-17T12:36:00.741+02:002011-05-17T12:36:00.741+02:00ah_clem
Money play:
Using the Trice count, it...<b>ah_clem</b><br /><br /><b>Money play:</b><br /><br />Using the Trice count, it's <b>double/take</b>. Black's point-of-last-take in computed as 10% of white's pipcount + 2 pips = 10+2 = 12. Black's point-of-last-take is exactly what it sounds like - if he's more than 12 pips behind he should drop, and if he's within 12 pips he should take. White should double if he's within 3 pips of the point-of-last-take and redouble if within 2. Here, White's 11 pip lead is square in the middle so it's double/take.<br /><br />Note that the Trice count is an approximation - you have to take wastage and gaps into account and there are other more sophisticated methods out there that account for these differences, but the Trice count is the simplest and easiest way to arrive at a doubling decision in non-contact positions.<br /><br />I'm 100% sure this is a double for money. I'm not completely sure about the take, since black has three more crossovers to make than white, but I'll still say take with about a 70% confidence level.<br /><br /><b>AtS (2-away 3-away)</b><br /><br />Here, if white doubles and black takes, black has a mandatory redouble and we're playing for the match. Since doubling here essentially throws away White's lead, White should be careful about doubling. I often get these wrong, and err on the side of holding. Here, I think the double is correct, because of the extra crossovers. Without those extra crossovers tipping the balance I'd hold. <br /><br />What about the take decision? Black is almost at the point of last take for money, which is somewhere around 22% GWC (deeper than the oft-cited 25% because of cube vig) If Black passes, then he'll need to win the next two games in a row, and assuming they players are at equal strength that gives him 25% MWC. So it looks like passing gives him more MWC than taking.<br /><br /><b>double/pass</b> but much less certain of this than for money.Mhttps://www.blogger.com/profile/07019590995775769366noreply@blogger.comtag:blogger.com,1999:blog-6270380615395644848.post-45054211456124858852011-05-17T12:34:34.242+02:002011-05-17T12:34:34.242+02:00As comments are not returned automatically, I will...As comments are not returned automatically, I will copy-paste them:<br /><br /><b>Bojan</b>:<br /><br />1a) I would double as a white<br />1b) I wouldn't take doubling as a black<br />2a) I wouldn't double, but would accept doubling from black<br />2b) I wouldn't take it as a black<br />2c) 1a) 80% 1b) 70% 2a) 60% 2b) 70%Mhttps://www.blogger.com/profile/07019590995775769366noreply@blogger.comtag:blogger.com,1999:blog-6270380615395644848.post-23643782591160423552011-05-16T15:15:40.755+02:002011-05-16T15:15:40.755+02:00Part 1. Double/take. The home boards have the same...Part 1. Double/take. The home boards have the same distributions. White takes three possibly four rolls to get in and start to bear off, black takes four or five rolls to get in and start to bear off. close enough for just one set of doubles to put black back in the driving seat.<br /><br />Part 2. No double/take. If white passes the cube over and black throws a joker double four, five or six he will close enough to re-double white out of the game if white throws badly, its then the crawford game and white has to win two games in a row to win the match. If he keeps calm and tries to win the match without the cube HE will then be in a crawford game in which black needs to win two games in a row. <br />If black gets any sets of big doubles and turns the cube white can drop and will only lose the one point, equalising the match.mattblackmattnoreply@blogger.comtag:blogger.com,1999:blog-6270380615395644848.post-8770450465353587772011-05-16T11:18:14.708+02:002011-05-16T11:18:14.708+02:00Main question:
Double/drop. I have a lower pip co...Main question:<br /><br />Double/drop. I have a lower pip count and am fewer rolls from starting to bear-off than black is. I think of this as a gambling position: Dice rolling is much more important than checker play from now on. <br /><br />I'm never very sure about doubling decisions, but I'm pretty confident about this one.<br /><br />On the other hand, (because of your second question) this could be a double/redouble. I'm not "more experienced" but it is obvious, that if white doubles at 2away 3away, then THIS is the issue. So, at 2away 3away I wouldn't double, because black is then just one 66 from winning the match.Frede Farmandnoreply@blogger.comtag:blogger.com,1999:blog-6270380615395644848.post-25287860367664594922011-05-14T09:09:12.974+02:002011-05-14T09:09:12.974+02:00Here is the explanation of the problem:
http://buz...Here is the explanation of the problem:<br />http://buzz.blogger.com/2011/05/blogger-is-back.html<br /><br />It seems we just have to wait and those deleted comments will return during the weekend.Mhttps://www.blogger.com/profile/07019590995775769366noreply@blogger.comtag:blogger.com,1999:blog-6270380615395644848.post-76048236068633828282011-05-14T09:06:32.865+02:002011-05-14T09:06:32.865+02:00There were some problems with blogger service yest...There were some problems with blogger service yesterday. <br />Unfortunately, some very good comments are deleted. I hope blogger will return them.Mhttps://www.blogger.com/profile/07019590995775769366noreply@blogger.comtag:blogger.com,1999:blog-6270380615395644848.post-81611723770323217142011-05-12T20:44:48.877+02:002011-05-12T20:44:48.877+02:00@pthalo - that method is called "Keith count&...@pthalo - that method is called "Keith count" and it is very good in medium-long races (bearing in, like here) with some wastage on low points.<br /><br />If Keith count gives doubler 3 more pips - it is still a take (as you noticed), so why did you choose to pass this? :)Mhttp://backginners.blogspot.comnoreply@blogger.comtag:blogger.com,1999:blog-6270380615395644848.post-39000104099172261322011-05-12T20:37:15.860+02:002011-05-12T20:37:15.860+02:001a double - fairly sure
1b no take - fairly sure
2...1a double - fairly sure<br />1b no take - fairly sure<br />2a double - no clue so i dont change anything<br />2b no take - no clue so i dont change anything<br /><br />The method I use is the one where you add 2 pips for each checker more than 1 on 1pt, 1 pip for each checker more than 1 on 2pt, 1 pip for each checker more than 3 on 3pt, 1 pip for each empty space on 4,5,6, and then add 1/7th (rounded down) for player on roll. in this case, most of that doesn't apply, just the added 1/7th which gives us 111 to 114.<br /><br />then the rule is: double if my count exceeds opponents by no more than 4. (it exceeds by 3 so i double). redouble if my count exceed opponent's by no more than 3 (not applicable). take if doubler's count exceeds mine by at least 2 (it does).Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-6270380615395644848.post-64877506294840919662011-05-12T13:53:19.894+02:002011-05-12T13:53:19.894+02:001a, I would cube as white.
1b, I would pass as bla...1a, I would cube as white.<br />1b, I would pass as black.<br />2a, I would not cube as white<br />2b, I would probably take and redouble as black<br />I am not sure in any of the situations..<br />traxxyAnonymousnoreply@blogger.comtag:blogger.com,1999:blog-6270380615395644848.post-71994921037029933422011-05-11T23:00:56.540+02:002011-05-11T23:00:56.540+02:00Money play:
Using the Trice count, it's doubl...<b>Money play:</b><br /><br />Using the Trice count, it's <b>double/take</b>. Black's point-of-last-take in computed as 10% of white's pipcount + 2 pips = 10+2 = 12. Black's point-of-last-take is exactly what it sounds like - if he's more than 12 pips behind he should drop, and if he's within 12 pips he should take. White should double if he's within 3 pips of the point-of-last-take and redouble if within 2. Here, White's 11 pip lead is square in the middle so it's double/take.<br /><br />Note that the Trice count is an approximation - you have to take wastage and gaps into account and there are other more sophisticated methods out there that account for these differences, but the Trice count is the simplest and easiest way to arrive at a doubling decision in non-contact positions.<br /><br />I'm 100% sure this is a double for money. I'm not completely sure about the take, since black has three more crossovers to make than white, but I'll still say take with about a 70% confidence level.<br /><br /><b>AtS (2-away 3-away)</b><br /><br />Here, if white doubles and black takes, black has a mandatory redouble and we're playing for the match. Since doubling here essentially throws away White's lead, White should be careful about doubling. I often get these wrong, and err on the side of holding. Here, I think the double is correct, because of the extra crossovers. Without those extra crossovers tipping the balance I'd hold. <br /><br />What about the take decision? Black is almost at the point of last take for money, which is somewhere around 22% GWC (deeper than the oft-cited 25% because of cube vig) If Black passes, then he'll need to win the next two games in a row, and assuming they players are at equal strength that gives him 25% MWC. So it looks like passing gives him more MWC than taking.<br /><br /><b>double/pass</b> but much less certain of this than for money.ah_clemnoreply@blogger.comtag:blogger.com,1999:blog-6270380615395644848.post-66789716946471159112011-05-11T22:02:32.887+02:002011-05-11T22:02:32.887+02:001a) I would double as a white
1b) I wouldn't t...1a) I would double as a white<br />1b) I wouldn't take doubling as a black<br />2a) I wouldn't double, but would accept doubling from black<br />2b) I wouldn't take it as a black<br />2c) 1a) 80% 1b) 70% 2a) 60% 2b) 70%Bojanhttps://www.blogger.com/profile/15806555287214592396noreply@blogger.com