Prime against Prime

Unlimited Games. Should Red redouble to 4? If redoubled, should White take?
Match Play. Red leads 1-0 to 11. Should Red redouble to 4? If redoubled, should White take?
eXtreme Gammon ID: XGID=-a-aBBDCB-A-b----abbbca--A:1:1:1:00:0:0:3:0:10

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Match Play. Red leads 1-0 to 11. Should Red redouble to 4? If redoubled, should White take?

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