[42]

Hello all!
Has someone perhaps a good description of the whole story of Leaping Michaels (further bidding by advancer)?
(2M) 4m (pass) ?

• 4oM is clear
  
• cuebid (4M)
  
• 4NT
  
• 5m is clear
  
• 5om
  
• 5oM

oM = other Major, the suit promised by 4m bidder
om = other minor

How does the structure change after 2♦ Multi?

Thx!

[helene_t]

There was an article about leaping Michaels in the Dutch magazine IMP a couple of years ago. Over 3M they play
4oM=strong ♣+♦
4NT=weaker ♣+♦
Over 3m it becomes
4♣=om+(♥or♠) - 4♦ asks
4♦=♥+♠

They play this over all kind of preemptive 3-bids when opps have shown one suit an we have shown no suit. E.g. Bergen Raises, preemptive overcalls of a strong or Polish 1♣, weak jump shifts at the three-level.

When they preempt at the two-level, a cue-bid at the 3-level is availiable. That can be used for a strong overcall in a minor.

There is some disagreement about whether it should also be used against Multi. If you choose to do so, it is
4m = that minor plus a major.Over 4♣, 4♦ asks, otherwise 4♥ is p/c.
4NT=minors

Respones:
4NT rsp cue: general slam try (or keycard ask if u prefer) for the lower rsp. upper of overcaller's suits (over 4♣ showing an unknown major, you can ask first before making a slam try for the major).

[Gerben42]

Complete article (in Dutch): http://www.imp-bridg...hestem-site.pdf

Example responses:

(2♠) 4♣ (P) ?

4♠: General slam try in ♣
4NT: General slam try in ♥
5♦: To play

All other sequences are similar. At the end of the article there are many more situations listed, like
1M p 3m (Bergen)
2M p 3M
etc.