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The correct play is to move one man from White’s bar point to White’s 5 point and one man from White’s 6 point to White’s 4 point. The play of bringing four men from your bar point to your 6 point in an attempt to save a gammon is wrong. Unless you hit a blot of Black’s it will be most unlikely that you will not be gammoned, for you would need back-to-back large doubles.

It appears that Black will be forced to leave a blot on his next roll. (Only the rolls of 2 and 1 or double 2s avoid a blot.) If you are lucky and hit Black’s blot (assuming he is forced to leave one), you certainly should save a gammon. You will also have a chance of winning.

There is actually a conceivable succession of rolls whereby you could redouble. Let’s assume Black rolls 6 and 5 and bears two men from his 3 point. You then roll 2 and something, hitting his blot. Black then rolls 2 and 1. He enters on your 2 point and is forced to split his men on his 2 point, hitting your remaining man, which is on his 1 point. You will now have the opportunity to pick up both of his blots. Even if you hit only one of them, you will have become a favorite to win the game.

Rollout  Tom Keith 2013

Money play White owns 2-cube White rolls 1-1 1296 games with VR Checker play: 3-ply Cube play: XG Roller

XGID=---BBADD--------------cbB-:1:1:1:11:0:0:0:0

	1-1:		Game	G	BG	Equity
1	7/4, 6/5	W L	.1220 .8780	.0000 .6468	.0000 .2327	−1.5818
2	7/5(2)	W L	.1215 .8785	.0000 .6519	.0000 .2301	−1.5873	(0.0055)
3	7/5, 6/5(2)	W L	.1211 .8789	.0000 .6522	.0000 .2329	−1.5888	(0.0070)
4	6/5, 6/3	W L	.1200 .8800	.0000 .6538	.0000 .2319	−1.5934	(0.0116)
5	7/5, 6/5, 3/2	W L	.1219 .8781	.0000 .6514	.0000 .2409	−1.5955	(0.0137)

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List of Positions from Better Backgammon

Better Backgammon (1974), by Tim Holland