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A 43 backgame cube

Posted By: Pilgrim
Date: Monday, 21 May 2012, at 11:42 a.m.

In Response To: A 43 backgame cube (kruidenbuiltje)

Hello,

Thank you for a very interesting problem.

Double/Take:

1) this is not a back game yet - it is a double anchor holding game that may turn into a backgame

2) White is only 20 pips down and has a 3 point home board. However, he has a stripped midpoint and two blots in his home board. He will shortly have to either give up his midpoint or run on of his two back checkers.

3) Blue has made his 5 point and 7 point and has a solid 4 point useful spares on his 13 point, 8 point and 6 point. However, he does still have the blot on the 15 point.

4) As a very rough set of reference positions, I usually think of a double anchor holding game (20 point, 18 point) I completely botched in March 2011 - http://www.bgonline.org/forums/webbbs_config.pl?read=92969

5) These reference positions showed that 20/18 double anchor positions are either ND/T or D/T depending on volatility, spares etc. Here, the deeper anchors clearly lead to more gammons, white has less timing to play with and blue has good spares.

6) I think this is a (small) take for the reasons highlighted by others. White may get a shot at the blot currently on the 15 point. White may end up with a 21 or 22 point game. White may get luck and out race blue. White may get a shot as blue clears the midpoint.

7) I think this is a double because there may be some market losers (for example I suspect making one of the 9, 10 or 11 points may be enough to make this a pass)

Pilgrim

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