Books |
From Better Backgammon, by Tim Holland
| White to play 2-2. |
The correct play is to move two men from Black’s 12 point to White’s 11 point, 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. It would not have been correct to move from Black’s 12 point to White’s 9 point, the reason being that you are not trying to block Black’s escape from your 3 point. You are so far ahead in the race that your only problem now is to avoid problems in bringing your men into your home board. If you put your men on your 9 point, Black’s men on your 3 point, you will have become a block which will restrict their safe movement into your home board. Any future roll that contains a 6 or a 1 (except double 1s) will prevent you from moving these two men into your board. In effect, this means that each time you roll you will not be favored to enter these men safely.
On the other hand, what happens to your men when you leave them on your 11 point? The best that might occur is that you roll some number with 6s and 5s, double 3s or 2s, which will bring both men to the safety of your bar and/or inner points.
The worst that could happen is that after several unsuccessful attempts to move them in without leaving a blot, you would be forced to leave a blot on your 11 point. This blot will then be exposed only to a 6 and 2 or 5 and 3 (4 chances out of 36).
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Rollout
Tom Keith 2013 |
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Money play Black owns 2-cube White rolls 2-2 1296 games with VR Checker play: 3-ply Cube play: XG Roller |
2-2: | Game | G | BG | Equity | ||||
1 | 13/11(2), 7/5(2) |
W L |
.8823 .1177 |
.1506 .0061 |
.0027 .0002 | +0.8651 | ||
2 | 13/11(2), 7/5, 6/4 |
W L |
.8807 .1193 |
.1459 .0070 |
.0028 .0002 | +0.8572 | (0.0079) | |
3 | 13/11(2), 6/4(2) |
W L |
.8723 .1277 |
.1334 .0072 |
.0023 .0002 | +0.8281 | (0.0370) | |
4 | 13/9(2) |
W L |
.8739 .1261 |
.1285 .0054 |
.0017 .0001 | +0.8278 | (0.0373) | |
5 | 13/11(2), 6/2 |
W L |
.8635 .1365 |
.1418 .0080 |
.0026 .0002 | +0.8147 | (0.0504) | |
6 | 13/11, 13/7 |
W L |
.8495 .1505 |
.1578 .0095 |
.0030 .0003 | +0.7898 | (0.0753) |
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