XGID=aCbBa-BAD--A-------cdbbB--:1:1:1:66:4:2:0:5:10
Match Play. Red leads 4-2 to 5. How should Red play 66?
The cube is put of play which makes a huge difference. For money 23/5, 11/5 is very clearly best because a fan by White gives Red a redouble that White must drop (just)
With no active cube 23/17, 23/11, 7/1 just noses out 23/11(2) but it is very, very close because nobody likes killing a checker. The key here is to understand just how much the different cube scenarios radically impact the checker play.