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My biggest oversight ;-) in recent memory BOT DATA

Posted By: Michael Depreli
Date: Saturday, 28 January 2012, at 12:09 p.m.

In Response To: My biggest blunder in recent memory (Michael Depreli)

The secret to getting lots of views is coming up with a catchy subject line.

Back in the day 3 things used to plague my game

1. Missing switching type plays when rolling doubles (or non-doubles when blitzing)
2. Cubing too quickly without considering if the position is too good.
3. Not seeing the non-hitting plays

I've pretty much eliminated these errors except I blew it this time on #3 by playing 15/13/11/9*/7 ouch

I've convinced myself now it was an oversight and not a blunder ;-)

All responders chose 15/13 10/8 6/4(2) which XGR++ prefers over 15/13 6/4(3) by 0.077

However XG's cube action after white plays is very suspect on all levels except XGR++ so as it uses 3-ply cube within it's mini-rollout it's eval is off.

The correct equities are I believe:

0.991 15/13 10/8 6/4(2)
0.968 15/13 6/4(3)

I don't know if playing the "inferior" move would induce more or less cube errors from a human opponent

Michael





White is Player 2

score: 1
pip: 156
7 point match
pip: 131
score: 4

Blue is Player 1
XGID=--a--bEBBaC-bB-Aab-b-bb---:0:0:1:22:4:1:0:7:10
Blue to play 22

1.XG Roller++15/13 10/8 6/4(2)eq: +0.965
Player:
Opponent:
76.65% (G:9.71% B:0.17%)
23.35% (G:2.28% B:0.07%)
2.XG Roller++15/13 6/4(3)eq: +0.888 (-0.077)
Player:
Opponent:
75.14% (G:11.24% B:0.24%)
24.86% (G:2.75% B:0.09%)
3.XG Roller++15/9* 9/7eq: +0.608 (-0.357)
Player:
Opponent:
68.39% (G:14.53% B:0.42%)
31.61% (G:5.05% B:0.17%)

eXtreme Gammon Version: 2.01, MET: Kazaross XG2

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