Position 80, page 160
From The Backgammon Book, by Oswald Jacoby and John R. Crawford

White to play 2-1.

In Position 80 your back game isn’t going too well because you haven’t been able to delay the movement of your forward men enough to create a sure thing for yourself if you should hit one of your opponent’s blots. You have one of the two classic back-game holdings: the black one and two points. Black has his men placed excellently, however, and unless his next roll is 6-5 or double 4 you aren’t going to get an immediate shot at him.

You roll a very satisfactory 2-1. You could retain your five-point board by moving the third man on your five point to your two point, but the correct play is to give up your six point and moving those two men to your four and five points. This looks a trifle silly: why give up a point when you don’t have to? But the reason that this is a very good play is that you want to hold as much of a board as you can. You aren’t likely to hit a blot at your next turn or even the turn after. If you attempt to hold your six point, you will have to move a man with any 5; but by giving p the six point you are delaying yourself, because you won’t be able to play a 5 at all and will be quite likely to hold your five, four, three, and two points for a long time.

6/5, 6/4  5/2
Rollout

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

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

 2-1: Game G BG Equity 1 5/2 W L .1294 .8706 .0042 .3507 .0001 .0273 −1.0640 2 5/3, 2/1 W L .1277 .8723 .0035 .3567 .0001 .0296 −1.0746 (0.0106) 3 6/5, 6/4 W L .1239 .8761 .0027 .3481 .0000 .0282 −1.0746 (0.0106) 4 5/4, 3/1 W L .1262 .8738 .0031 .3584 .0001 .0293 −1.0817 (0.0177) 5 24/23, 5/3 W L .1402 .8598 .0052 .4176 .0002 .0194 −1.0905 (0.0265)

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List of Positions from The Backgammon Book

The Backgammon Book (1970), by Oswald Jacoby and John R. Crawford