Position 86, page 160
From Backgammon, the Cruelest Game, by Barclay Cooke and Jon Bradshaw

Black to play 2-1.

In this instance there is only one correct play. Whenever your opponent has 13 men off, you must force him to break any point in order to get both of his men on the bar. If he has your 1 point and you have established a prime, break the prime so that he has to play a 6 if he rolls it. Black should move one man from his bar point onto his 5 point and the other from white’s 10 point to the 11 point.

Of course, double 6’s may win the game for white, but they would win the game anyway if black waited to break his bar point until all his other men were in his inner board. Further, by leaving one man on his bar point, black increases his chances of winning, since he will come in again in white’s board if white throws a 6. The chief principle at work here is that all risks are worthwhile in order to separate white’s two men.

7/5, 15/14  19/18, 7/5
Rollout

Tom Keith 2013
Money play
Black owns 2-cube
Black rolls 2-1

1296 games with VR
Checker play: 3-ply
Cube play: XG Roller
XGID=-bBBBBCB-------A---A------:1:1:1:21:0:0:0:0

 2-1: Game G BG Equity 1 19/18, 7/5 W L .5390 .4610 .0000 .0421 .0000 .0165 +0.2563 2 19/17, 7/6 W L .5351 .4649 .0000 .0416 .0000 .0161 +0.2502 (0.0061) 3 15/14, 7/5 W L .5346 .4654 .0000 .0423 .0000 .0160 +0.2446 (0.0117) 4 15/13, 7/6 W L .5333 .4667 .0000 .0417 .0000 .0164 +0.2445 (0.0118) 5 7/4 W L .5328 .4672 .0000 .0403 .0000 .0145 +0.2426 (0.0137)

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List of Positions from Backgammon, the Cruelest Game

Backgammon, the Cruelest Game (1974), by Barclay Cooke and Jon Bradshaw