Below, I actually lost 0.537 equity.
All I was trying to do was anchor on the opponent's 4 point for solidity.
eXtreme Gammon Version: 2.19.207.pre-release
On 5/4/2022 11:30 AM, peps...@gmail.com wrote:
Below, I actually lost 0.537 equity.You're massively behind in the pip count so you have to hit a shot,
All I was trying to do was anchor on the opponent's 4 point for solidity.
and so you have to stay back for more contact.
I'm reminded of the position below from Mike Corbett's book, "Backgammon Problems." He makes the following rather brutal comment: "If you
advocate making the advanced anchor, then whatever division you're
playing in, demote yourself to the next lower one." He goes on to
explain, "X must capture one of O's checkers to win, and the two point
anchor rates to generate significantly more shots than the four point
with a blot on the two point."
XGID=----BBCAAA---Ba-cbbbcA-Bb-:0:0:1:62:0:0:3:0:10
X:Player 1 O:Player 2
Score is X:0 O:0. Unlimited Game, Jacoby Beaver +13-14-15-16-17-18------19-20-21-22-23-24-+
| X O O O O | | O O X X O |
| X O O O | | O O X O |
| O | | O |
| | | |
| | | |
| |BAR| |
| | | |
| | | |
| | | X |
| | | X X X |
| X X X | | X X X |
+12-11-10--9--8--7-------6--5--4--3--2--1-+
Pip count X: 153 O: 97 X-O: 0-0
Cube: 1
X to play 62
1. XG Roller+ 21/15 9/7 eq:-0.770
Player: 31.85% (G:3.35% B:0.11%)
Opponent: 68.15% (G:15.55% B:0.56%)
2. XG Roller+ 21/15 13/11 eq:-0.785 (-0.015)
Player: 31.61% (G:3.44% B:0.12%)
Opponent: 68.39% (G:16.20% B:0.68%)
3. XG Roller+ 21/13 eq:-0.824 (-0.054)
Player: 29.79% (G:3.14% B:0.11%)
Opponent: 70.21% (G:13.18% B:0.51%)
eXtreme Gammon Version: 2.19.207.pre-release
Below, I actually lost 0.537 equity.
All I was trying to do was anchor on the opponent's 4 point for solidity.
Why is this a worse idea than putting lumps of chocolate
into a Margherita Pizza?
Thanks for your help.
Paul
XGID=-----BCBC---bB---dcd-A-Bb-:0:0:1:52:5:0:3:0:10
X:Daniel O:eXtremeGammon
Score is X:5 O:0. Unlimited Game, Jacoby Beaver +13-14-15-16-17-18------19-20-21-22-23-24-+
| X O O | | O X X O |
| X O O | | O X O |
| O O | | O |
| O | | O |
| | | |
| |BAR| |
| | | |
| | | |
| X | | X |
| O X X | | X X |
| O X X | | X X |
+12-11-10--9--8--7-------6--5--4--3--2--1-+
Pip count X: 159 O: 105 X-O: 5-0
Cube: 1
X to play 52
1. XG Roller+ 21/16 6/4 eq:-0.377
Player: 40.22% (G:4.84% B:0.13%)
Opponent: 59.78% (G:11.29% B:0.31%)
2. XG Roller+ 23/21 8/3 eq:-0.913 (-0.537)
Player: 28.58% (G:3.71% B:0.11%)
Opponent: 71.42% (G:16.33% B:0.15%)
3. 4-ply 21/16 8/6 eq:-0.454 (-0.077)
Player: 38.39% (G:4.83% B:0.07%)
Opponent: 61.61% (G:13.16% B:0.34%)
4. 4-ply 8/3 6/4 eq:-0.507 (-0.131)
Player: 38.69% (G:5.56% B:0.11%)
Opponent: 61.31% (G:18.63% B:0.66%)
5. 3-ply 21/14 eq:-0.524 (-0.147)
Player: 36.28% (G:4.17% B:0.12%)
Opponent: 63.72% (G:12.73% B:0.30%)
eXtreme Gammon Version: 2.10
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