Conventions ...

3 way Drury

Ace asking 4NT & 5M

Bato

Bergen

Confit

DOPI

Gazzilli

Gladiator

Jacoby 2NT

Leaping Michaels

Lightner double

Lebensohl

Multi Landy

Nebulous 2♣

Negative redouble

Responsive double

RKCB

Pdbl and Sdbl

Romex

Rubensohl

Splinters

Support dbl/rdbl

Texas (SA)

Thrump double

Trap pass

Trial bids

Unserious 3NT

Leaping (F1) in Non-Leaping Michaels (NF)

Strong, GF two suiter over opps':

natural W2 or Muiderberg or Multi 2♦ (incl. NF continuation)

or

natural preempt on level 3 or 4

or

opened precision stile 2♣   

or

bid (1M) - pass - (2M)

or

bid (1x) - pass - (3x) preemptive

        

Opp       Overcall        Showing

♣           4♣    =            both M 

             4♦    =            ♦ & M

             4M   =            TP

♦           4♣    =            ♣ &  M 

             4♦    =            both M

             4M    =            TP

♥           4♣    =            ♣ &  ♠ 

             4♦    =            ♦ &  ♠

             4♥    =            over 3♥ = asking for ST, 4NT = TP

             4♠    =            TP

♠           4♣    =            ♣ &  ♥

             4♦    =            ♦ &  ♥

             4♥    =            TP

             4♠    =            over 3♠ = asking for ST, 4NT = TP

3M        4NT =            both m

FOL usually bids final contract.

after (♣) - 4♦    ➤    4♥ = P/C,    4♠ = P/C, SI for ♥ if she bids againf after 5♦

after (♦) - 4♣    ➤    4♦ = bid your M,    4M = TP

When both suits are known, cheapest bid (except both suits) confirms fit and shows SI for the higher ranking suit, next possible bid confirms fit and shows SI for the lower ranking suit (4NT included in both possibilities). 

Bids above are natural and TP. 

4th suit jump bid is TP.

Copyright © Barbara Drinovec Drnovšek & Tomaž Adamič