News:

All new Fibsboard.com for 2011 --" your unofficial Forum for all fings FIBS."
New Membergroups, new boards including topical discussions, Campaigns, Culture and Gossip. Photo Galleries, Forum Backgammon vs Top Guest, and much much more.........faster and improved, with sas :)

Main Menu

Game 2, move 4:Herd, cube decision

Started by diane, June 04, 2011, 12:33:22 PM

Previous topic - Next topic

diane

Position ID: 4OfBYBBsG/AJIA
Match ID: MBmgAAAACAAA
Never give up on the things that make you smile

stiefnu

Spoiler
Looks like I'm well out-voted but could this not be a take?  Clemstog still have plenty to do and, other than their admittedly strong 4 point board, have a couple of blots with no great board position.  Meanwhile, we have time to build our board and perhaps make life a bit difficult for them.
[close]

stog

Spoiler
that's the spirit-- the game has much meat left on it.. :) might even switch my vote ;)
[close]

Krazula

Spoiler
Yes, it might be a take. I'm not sure and I vote for drop though, I think its probably a close decision.
[close]

ah_clem

rollout

Spoiler


Clemstog has an impressive board, but no checkers in the zone so the Herd's blot is probably safe for a roll or two. Meanwhile, the Herd has the bar point anchor, and all it will take is for the Herd to roll a 5 to transition this into a very playable holding game.  So, despite the weak structure and being massively outboarded, the Herd should take this one.

Of course, I say all this with the benefit of looking at a 2-ply rollout.  At the time, I couldn't decide whether the Herd had a take or not so I just pushed the cube according to Woolsey's law.  One of the idea's behind that law is that it gives your opponent a chance to make an error.





Cube analysis
Rollout cubeless equity  +0.477 (Money:  +0.439)

Cubeful equities:
1. Double, take         +0.816
2. Double, pass         +1.000  ( +0.184)
3. No double            +0.716  ( -0.100)
Proper cube action: Double, take

Rollout details:
Centered 1-cube:
  0.640 0.233 0.007 - 0.360 0.076 0.006 CL  +0.477 CF  +0.716
[0.001 0.002 0.000 - 0.001 0.002 0.001 CL   0.004 CF   0.010]
Player You owns 2-cube:
  0.644 0.246 0.006 - 0.356 0.081 0.008 CL  +1.095 CF  +0.816
[0.002 0.003 0.001 - 0.002 0.003 0.002 CL   0.012 CF   0.014]
Full cubeful rollout with var.redn.
1296 games, Mersenne Twister dice gen. with seed 885753883 and quasi-random dice
Play:  2-ply cubeful prune [world class]
keep the first 0 0-ply moves and up to 8 more moves within equity 0.1
Skip pruning for 1-ply moves.
Cube: 2-ply cubeful prune [world class]


[close]