Responses:
The partner of the Muiderberg opener can take the following actions:- pass (with tolerance for the opened suit)
- bid 3(a pass-or-correct bid)
- bid 3to invite for game in the major suit
- bid 2(over 2) as a contract improvement (opener is allowed to raise with a suitable hand)
- bid 3/(opener’s suit) as a preemptive raise
- bid 3/ (other major) which is non-forcing but invitational
- ask for the minor suit using a 2NT relay bid with a strong hand.
- bid 3with a minimum and clubs / with a four clubs
- bid 3with a minimum and diamonds / with a four diamonds
- bid 3with a maximum and clubs / with a five or more clubs
- bid 3with a maximum and diamonds / with a five or more diamonds
- bid 3NT with 4-4 in both minors
- bid 4/with a 6+ cards in the bid suit