Redouble(by Overcaller's Partner

Overcaller's Partner's double after Overcaller's double.
Double in response to a take-out double is:

Punitive If Responder bids one of the suits bid with a take-out double
Take-out if the Opps are fitted : calling for the majors if the Opener's team has a minor fit and vice-versa.

Overcaller has all the information need to continue bidding or pass.

S	W	N	E

Problem E1016 : X This XX is clearly a signal for the majors because Opps have a minor fit.

S	W	N	E

Problem E4739 : X This XX is punitive because Responder bid ♠ one of this suits signalled for with North's X.