SPECIAL DOUBLES NOTRUMP OVERCALLS After Overcall: Penalty Direct: 15 to 18 Systems on NAMES Joel Wooldridge & David Grainger Negative thru 4♥ Conv. GENERAL APPROACH Responsive : thru 4♥ Maximal Balancing: 11 to 16 Jump to 2NT: Minors 2 Lowest Support: Dbl. thru Redbl Two Over One: Game Forcing Game Forcing ExceptWhen Suit Rebid Conv. Card-showing Min. Offshape T/O VERY LIGHT: Openings 3rd Hand Overcalls Preempts DEFENSE VS NOTRUMP FORCING OPENING: 1♣ 2♣ Natural 2 Bids Other vs: Direct Balance/PH SIMPLE OVERCALL NOTRUMP OPENING BIDS 2♣ Majors Majors 1NT 2NT to 1 level 6 to + HCP (usually) 2♦ 1 Major 1 Major 14 to 16 3♣ ♦ Puppet Stayman often 4 cards very light style 2♥ ♥+minor ♥+minor Transfer Responses: 15 to 17 3♦ 5/5 minors GF Responses 2♠ ♠+minor ♠+minor Jacoby Texas 5-card Major common 3♥ 31(45) New Suit: Forcing NFConst NF 3 Dbl: penalty 4Maj+minor or 1 3♠ 13(45) ♠ -> 3N Jump Raise: Forcing Inv. Weak Other System on over 2♣, X 4♣ = ♦ opt rkc jump Q = mixed 2♣ Stayman Puppet 2♦ Transfer to ♥ 4♦, 4♥ Transfer 3NT to Gambling JUMP OVERCALL OVER OPP'S T/O DOUBLE Forcing Stayman Smolen Strong Intermediate Weak New Suit Forcing:1 level 2 level 2♥ Transfer to ♠ Lebensohl ( denies) Conventional NT Openings Jump Shift:Forcing Inv. Weak 2♠ range/♣ Neg. Double : rev Baze Redouble implies no fit 2NT puppet Other: OPENING PREEMPTS 2NT Over Limit+ Limit Weak Sound Light Very Light MAJOR OPENING MINOR OPENING Majors NF 3/4-bids Minors Expected Min. Length 4 5 Expected Min. Length 4 3 0–2 Conv. Conv./Resp. Other xfers/1M-X, FSJ 1st/2nd 1♣ 3rd/4th 1♦ DIRECT CUEBID VS Opening Preempts Double Is RESPONSES RESPONSES OVER: Minor Major Takeout thru 4♥ Penalty Natural Double Raise: Force Inv. Weak Double Raise: Force Inv. Weak Conv. Takeout: Strong T/O After Overcall: Force Inv. Weak After Overcall: Force Inv. Weak Lebensohl 2NT Response Michaels Conv. Raise: 2NT 3NT Splinter Forcing Raise: J/S in other minor Other: Other: Single raise Other: 2♠ = mixed SLAM CONVENTIONS Gerber : 4NT: Blackwood RKC 1430 1NT: Forcing Semi-forcing Frequently bypass 4+♦ Exclusion, Kickback 2NT: Forcing Inv. to 1NT/1♣ 7 to 11- 3NT: to 2NT Forcing Inv. 13+ to 16 vs Interference: DOPI DEPO Level: ROPI Drury : Reverse 2-Way Fit 3NT: 16 to 18 inv J/S LEADS (circle card led, if not in bold) DEFENSIVE CARDING Other: Other 2♥ = bal inv or limit versus Suits versus Notrump vs SUITS vs NT Standard: DESCRIBE RESPONSES/REBIDS x x x x x x x x x x x x Except 22 to + HCP x x x x x x x x x x x x x x x x 2♣ Strong Other Rev Kokish A K x T 9 x A K J x A Q J x 2♦ Resp: Neg Waiting Q x K T x A T 9 A 9 x K J J T Upside-Down: 4 to 9 HCP Q J x K T 9 x K Q J x K Q T 9 2♦ count Natural: Weak Intermediate Strong Conv. 2NT Force New Suit NF J T 9 Q T 9 x Q J T x Q T 9 x attitude 4 to 9 HCP xfers/X K Q T 9 J T 9 x T 9 x x 2♥ FIRST DISCARD Natural: Weak Intermediate Strong Conv. 2NT Force New Suit NF LENGTH LEADS: Lavinthal 4 to 9 HCP hampson responses to 2N 4th Best vs SUITS vs NT Odd/Even 2♠ Natural: Weak Intermediate Strong Conv. 2NT Force New Suit NF 3rd/5th Best vs SUITS vs NT Attitude vs NT OTHER CARDING OTHER CONV. CALLS: New Minor Forcing: 2-Way NMF Smith Echorev Weak Jump Shifts: In Comp. Not in Comp. Primary signal to partner's leads Trump Suit Pref. 4th Suit Forcing: 1 Rd. Game Attitude Count Suit preference Foster Echo unusual vs unusal, Mathe SPECIAL CARDING PLEASE ASK Transfers/1♣, Good Bad 2N Gazzili after 1M-1N Last modified: Jul 11 2020 22:58.