When opponents interfere with cue bid showing Michaels or a unusual 2NT
- Bidding the lower of the known suits shows support for openers suit and limit+
- Bidding the higher of the known suits shows game values but no support of openers suit
- If only one suit is known cue bidding that suit is the same as 1. support and limit+
Bidding openers suit at the next available level shows a weak hand and is a sign-off unless opener has more values
Double shows support for the fourth unbid suit or desire for penalty, after opponents bid with support for unbid suit partner should double and responder can convert to penalty or bid suit. If opener passes a double by responder is for penalty
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