BID | 1NT-2C (FOUR-CARD MAJORS) | 2NT-3C (FOUR-CARD MAJORS) | 2D-2H-2?-3C (AT LEAST 5-4 IN THE MAJORS) | 2D-3C (FIVE-CARD MAJORS) |
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Pass after overcall | might be passing for penalties, hoping for a reopening takeout double from partner |
Double | takeout | | |
Pass after double | Shows a non-horrible four-card suit, willing to play in the doubled conventional bid if partner has trumps too. |
Redouble | To play, good five-card suit, but partner's allowed to take it out if unsuitable. | Shows a good five-card suit, or alternatively if that's impossible given the earlier bidding then an outstandingly good four-card suit (at least AKQx). | To play, good five-card suit, but partner's allowed to take it out if unsuitable. |
Diamonds | denies a four-card major | "what's your 5-card major?" | "what's your 4-card major?" |
Hearts | four hearts | five hearts |
Spades | four spades, denying four hearts | five spades, happy for 3NT to be played the wrong way up |
No Trumps | | | to play, denying the majors. | to play, denying the majors |