SPECIAL DOUBLES NOTRUMP OVERCALLS After Overcall: Penalty Direct: 15 to 18 Systems on NAMES David Turner and Roy Hughes Negative thru 4♥ Conv. GENERAL APPROACH Balancing: 10 to 14 Responsive : thru 4♥ Maximal 2 over 1 , UDCA, 4th best Jump to 2NT: Minors 2 Lowest Support: Dbl. thru Redbl Two Over One: Game Forcing Game Forcing ExceptWhen Suit Rebid Conv. 18-19 bal in balance 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: Strong Weak SIMPLE OVERCALL NOTRUMP OPENING BIDS 2♣ majors majors 1NT 2NT 20 to 21 1 level 9 to 18 HCP (usually) 2♦ Natural Natural 15 to 17 3♣ 5/5 minors, inv. Puppet Stayman often 4 cards very light style 2 Transfer Responses: ♥ Natural Natural to 3♦ 5+♦, 4+♣, slammish Responses 2♠ Natural Natural Jacoby Texas 5-card Major common 3♥ 3 ♥, minors, fg New Suit: Forcing NFConst NF 3 Dbl: penalty Penalty 3♠ 3 ♠, minors, fg ♠ MSS Jump Raise: Forcing Inv. Weak Other2N: minors / freak System on over X, 2♣ 4♣ Gerber 3-level: pre-empt NV, intermed Vul 2♣ Stayman Puppet 2♦ Transfer to ♥ 4♦, 4♥ Transfer 3NT 3/4th: to Play 1/2: gambling, no side cards 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 (Fast denies) Conventional NT Openings Intermediate Vul. Only Jump Shift:Forcing Inv. Weak 2♠ trf to ♣ Neg. Double :3-level + Redouble implies no fit 2NT trf to ♦ 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. May be light NV Other Single jump shift = fit 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: Jacoby 2N, 3N: 16-17 4333 poor Scontolsingle raise Other: SLAM CONVENTIONS Gerber : 4NT: Blackwood RKC 1430 1NT: Forcing Semi-forcing Frequently bypass 4+♦ 4N progressive after both players cuebid 2NT: Forcing Inv. to 1NT/1♣ 6 to 11 3NT: 16 to 17 2NT Forcing Inv. 12 to 15 vs Interference: DOPI DEPO Level: ROPI 5 of trump suit+ Drury : Reverse 2-Way Fit 3NT: 16 to 17 Drury 2♦ Other Strong JS to 2-level LEADS (circle card led, if not in bold) DEFENSIVE CARDING Other: 2♠/1♥, 3♣, 3♦: Strong JS 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 to HCP x x x x x x x x x x x x x x x x Suit pref at T2 vs NT 2♣ Strong Other strong, ART 2♥ resp: no A or K A K x T 9 x A K J x A Q J x 2♦ Resp: Neg Waiting GF, 1K or 1A+ Q x K T x A T 9 A 9 x K J J T Upside-Down: 5 to 10 HCP High card Feature if > min 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 5 to 10 HCP High card Feature if > min 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 5 to 10 HCP High card Feature if > min 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 Note: 0/2 leads of 9 and higherAttitud evsv sNTNT OTHER CARDING OTHER CONV. CALLS: New Minor Forcing: 2-Way NMF Smith Echo Weak Jump Shifts: In Comp. Not in Comp. Primary signal to partner's leads Trump Suit Pref. 4th Suit Forcing: 1 Rd. Game Complex defences to Unuusal 2N, Michaels Attitude Count Suit preference Foster Echo SPECIAL CARDING PLEASE ASK Last modified: Feb 06 2021 13:24.