FIBS Board backgammon forum

Backgammon => Fibsboard Forum Matches => FFM1 => Topic started by: blitzxz on May 17, 2009, 11:46:40 AM

Title: Match 1, Game 3, Move 8, factotum cube&checker
Post by: blitzxz on May 17, 2009, 11:46:40 AM
Double or not?

Score:
Green(forum) 2, White(factotum) 0, match to 5

Pips:
Green 123 White 171

GnuID:
Os6YGQCwbfAAQw:AQGgAAAAEAAA
Title: Re: Match 1, Game 3, Move 8, factotum cube&checker
Post by: Zorba on May 17, 2009, 12:36:33 PM
Spoiler
I'm not happy with the coin toss play  :wacko: but I'd be happy if factotum redoubled here. It's a huge take now, so he needs many small or some big market-losers (or some combo) to have a reason to redouble here. Getting hit (12/36) would obviously be bad for us, but if we enter in a decent way it looks like a take to me. If we dance (4/36), we're in serious trouble. But it doesn't look like a huge pass (say worse than -1.4) to me. So, few market losing sequences (hit dance is 1/27, around 4%) and they don't look like HUGE market losers, so no redouble.
[close]
Title: Re: Match 1, Game 3, Move 8, factotum cube&checker
Post by: factotum on May 17, 2009, 01:42:56 PM
No double.
Title: Re: Match 1, Game 3, Move 8, factotum cube&checker
Post by: NIHILIST on May 17, 2009, 02:52:08 PM
Now there's an interesting strategy, using our confusion and indecision to induce him to redouble.


Bob
Title: Re: Match 1, Game 3, Move 8, factotum cube&checker
Post by: blitzxz on May 17, 2009, 03:51:56 PM
6-2?
Title: Re: Match 1, Game 3, Move 8, factotum cube&checker
Post by: Zorba on May 17, 2009, 04:37:03 PM
Spoiler
At least that 6-2 would've hit after the other play as well!  ;) Looks obvious: B/23* 13/7 get an attack/builder in pace to contain our new&improved backman.
[close]
Title: Re: Match 1, Game 3, Move 8, factotum cube&checker
Post by: factotum on May 17, 2009, 05:22:04 PM
A good roll...  bar-23*,  13-7.
Title: Re: Match 1, Game 3, Move 8, factotum cube&checker
Post by: diane on May 17, 2009, 06:05:31 PM
Spoiler
Yup, nothing else to do with that 6 that is sensible, other than to bring it to where it will be useful - 13-7.  I see that we would have got hit either way, but sure wish he were hitting by splitting that 21pt anchor  :(
[close]
Title: Re: Match 1, Game 3, Move 8, factotum cube&checker
Post by: playBunny on May 17, 2009, 06:57:34 PM
Quote from: diane on May 17, 2009, 06:05:31 PM
Yup, nothing else to do with that 6 that is sensible, other than to bring it to where it will be useful - 13-7.  I see that we would have got hit either way, but sure wish he were hitting by splitting that 21pt anchor  :(

As it was a 2-6 and he wouldn't have been on the bar, he'd had leapt out with the backrunner on our 2-point.
Title: Re: Match 1, Game 3, Move 8, factotum cube&checker
Post by: diane on May 17, 2009, 11:49:23 PM
Quote from: playBunny on May 17, 2009, 06:57:34 PM
As it was a 2-6 and he wouldn't have been on the bar, he'd had leapt out with the backrunner on our 2-point.

Oh yeah  :oops:   :laugh:
Title: Re: Match 1, Game 3, Move 8, factotum cube&checker
Post by: ah_clem on May 18, 2009, 02:09:30 AM
Spoiler

Quote from: Zorba on May 17, 2009, 04:37:03 PM
At least that 6-2 would've hit after the other play as well! 

62 is the one roll that would allows him to hit and maintain his anchor, had we made the other play.

Sometimes you're just doomed no matter what you do.  (c:

[close]
Title: Re: Match 1, Game 3, Move 8, factotum cube&checker
Post by: Zorba on May 19, 2009, 09:58:42 PM
GnuBG 2-4-ply on factotum's redouble:

Spoiler

Too early for a recube, but it's not so far off anymore (no blunder to redouble):

Cube analysis
2-ply cubeless equity  -0,0963 (Money:  -0,1640)
   43,53  10,95   0,25 -  56,47  14,39   0,27
Cubeful equities:
1. No double            +0,2347
2. Double, pass         +1,0000  ( +0,7653)
3. Double, take         +0,1530  ( -0,0817)
Proper cube action: No redouble, take (9,6%)

Cube analysis
3-ply cubeless equity  -0,0388 (Money:  -0,1091)
   45,73  11,39   0,27 -  54,27  13,65   0,39
Cubeful equities:
1. No double            +0,3123
2. Double, pass         +1,0000  ( +0,6877)
3. Double, take         +0,2553  ( -0,0570)
Proper cube action: No redouble, take (7,7%)

Cube analysis
4-ply cubeless equity  -0,0889 (Money:  -0,1570)
   44,04  10,90   0,27 -  55,96  14,66   0,29
Cubeful equities:
1. No double            +0,2597
2. Double, pass         +1,0000  ( +0,7403)
3. Double, take         +0,1746  ( -0,0851)
Proper cube action: No redouble, take (10,3%)
[close]