GENERAL BIDDING PRINCIPLES
A competitive bid in the pass-out seat is a king weaker than if bid directly.
More flexible about aggressive third-seat opening bids.
Assume strong overcalls of weak bids and weak overcalls of strong bids
SPECIFIC SYSTEM POINTS
Responses to a natural 1NT/2NT overcall have the same meaning as after a no-trump opening bid of the same level.
5332 is treated as balanced, even with 5CM. Thus 1H 1S 2H shows a six-card suit.
A one-of-a-suit opener's 2NT rebid is game-forcing opposite a weak response, but natural opposite a stronger one.
New suit response (below game) to partner's overcall/weak two/pre-empt is forcing (if the intermediate hand passed)
Super-accepts are only permitted in response to transfers bids up to the three-level.
"RULE OF THUMB" GUIDELINES TO USE IF IN DOUBT
|Splinter Level||Blackwood Level||Grand-Hunting Level|
|Unnecessary jump shift||splinter||Exclusion Blackwood||Complete two-suiter|
|To transfer and then bid a second suit||assumed to be either natural or a splinter (in the absence of more specific agreements for a particular sequence), depending on whether or not it's an unnecessary jump. However you can't splinter for your own suit except as responder in certain sequences after partner opened a strong balanced hand, so 1H 1NT 4D (for example) is natural because responder hasn't shown a suit.||Exclusion Blackwood, except that the cheapest non-trump bid if Minorwood has been bypassed will normally be taken as Minorwood.||Complete two-suiter|
|Splinter Level||below four of an agreed trump suit|
|Blackwood Level||between four and five of an agreed trump suit|
|Grand-Hunting Level||between five and six of an agreed trump suit|