No Double equity may vary depending on cube position (owned or centered). But Double Take equity is always the same regardless of where the cube was before the double. I've never seen XG get this wrong.
But here XG gives different Double Beaver equities, depending on initial cube position. I *think* this must be wrong. Am I missing something?
(Ok, the D-B equities are the same at 2-, 3-, 4-ply, but differ at Roller + and ++. Why?)
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| XGID=-baB--D-B--AbD---c-da-b-AA:0:0:1:00:0:0:3:0:10 | |||||
| Blue on roll, cube action? | |||||
| Analyzed in XG Roller++ | No double | Double/Take |
| Player Winning Chances: | 53.51% (G:17.91% B:1.40%) | 53.52% (G:17.88% B:1.36%) |
| Opponent Winning Chances: | 46.49% (G:15.74% B:0.79%) | 46.48% (G:15.47% B:0.76%) |
| Cubeless Equities | +0.098 | +0.201 |
| Cubeful Equities | ||
| No double: | +0.147 | |
| Double/Beaver: | -0.293 (-0.440) | |
| Double/Pass: | +1.000 (+0.853) | |
| Best Cube action: No double / Beaver | ||
| Percentage of wrong pass needed to make the double decision right: 25.4% | ||
eXtreme Gammon Version: 2.10
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| XGID=-baB--D-B--AbD---c-da-b-AA:1:1:1:00:0:0:3:0:10 | |||||
| Blue on roll, cube action? | |||||
| Analyzed in XG Roller++ | No redouble | Redouble/Take |
| Player Winning Chances: | 53.53% (G:17.87% B:1.40%) | 53.63% (G:17.88% B:1.36%) |
| Opponent Winning Chances: | 46.47% (G:15.58% B:0.75%) | 46.37% (G:15.49% B:0.76%) |
| Cubeless Equities | +0.100 | +0.205 |
| Cubeful Equities | ||
| No redouble: | +0.305 | |
| Redouble/Beaver: | -0.287 (-0.592) | |
| Redouble/Pass: | +1.000 (+0.695) | |
| Best Cube action: No redouble / Beaver | ||
| Percentage of wrong pass needed to make the double decision right: 31.5% | ||
eXtreme Gammon Version: 2.10
.293 does not equal .287.