Position 49, page 132
From The Backgammon Book, by Oswald Jacoby and John R. Crawford

White to play 4-1.

If you’re a careless player, you might just move the man on the black ten point to your own ten point. This play will leave you in trouble if your next roll is double 4.

Suppose that you guard against this by moving a man from the black bar point to the black twelve point. This looks perfectly safe. You can then play double 4 or double 3 with ease — but suppose that your next roll is an innocuous double 1. Try to play it without breaking your board! You won’t be able to, because you won’t be able to play more than three of them with your outside men.

The correct way to play your 4-1 is to move the man on the black ten point to your eleven point, and one man from the black bar to the black eight point. Now you’ll be able to play any subsequent roll in safety.

15/11, 18/17
Rollout 
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Tom Keith 2013 
Money play
Black owns 2-cube
White rolls 4-1

1296 games with VR
Checker play: 3-ply
Cube play: XG Roller
XGID=aBBBBBB-----b-bA--Bcbb-c--:1:-1:1:41:0:0:0:0

4-1: Game BG   Equity
1 18/17, 15/11 W
L
.9692
.0308
.5236
.0004
.0005
.0000
+1.4466 x  *
2 18/13 W
L
.9609
.0391
.5130
.0026
.0005
.0001
+1.4141 (0.0325) 

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No. 48i, page 131
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No. 50a, page 134

List of Positions from The Backgammon Book

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

Backgammon Galore : Books