TSMYOYO

No. With weak hand you never jump in minor above 3NT in GF auction. Besides, how is 4♦ "arrival" ? :) We don't want to play there afterall... OK, perhaps "fast arrival" is not quite the correct term, perhaps I should have used "large steps (jumps) when weak (min), small steps when strong" in line with the modern tendency to jump with weaker hands and go slowly with stronger hands. I do agree that 4♦ could be slam invite but this can vary with different partnership styles.

It's a convention which uses bids below 4NT as RKCB in the minor leaving you more space as well as 4NT for other purposes (like natural to play for example o some kind of general slam invite) There are many versions as to what bid is kickback in various situations. The convention is virtually unknown in some parts of the world but popular in NA from what this forum seems to suggest. Thanks bluecalm. I had never heard of kickback. I would think that 2♦ shows 8+ HCP and 5+♦. 4♦ could be "fast arrival" in which case 5♦ would be the limit. However BW or RKCB does have merit since 5♦ is still available as a safety net if the response is unfavourable.

What is kickback? What is logic behind 4♥ bid?

[hv=d=w&v=b&s=shaqj10763da83cq65]133|100|Scoring: IMP Bidding:- 1♦ pass 1♥ pass 2♣ pass ?? [/hv] You are east. What is your rebid. Please give reasons.