SPECIAL DOUBLES NOTRUMP OVERCALLS NAMES Carrie Liu & Max Silin After Overcall: Penalty Direct: 15 to 18 Systems on Negative thru 4♥ Conv. GENERAL APPROACH Responsive : thru 4♥ Maximal Balancing: 11 to 15 Precision, we open 10+hcp including distributional upgrades 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 Transfer X on 3rd level DEFENSE VS NOTRUMP FORCING OPENING: 1♣ 2♣ Natural 2 Bids Other vs: weak Strong SIMPLE OVERCALL NOTRUMP OPENING BIDS 2♣ majors majors 1NT 2NT 19 to bad21 1 level 5 to 18 HCP (usually) 2♦ ♥ ♥ 13-15 to 3♣ HHxxxx in ♣ Puppet Stayman often 4 cards very light style 2♥ ♠ ♠ Transfer Responses: 10 -12 to 1-3 NV 3♦ HHxxxx in ♦ Responses 2♠ ♠+minor ♠+minor Jacoby Texas 5-card Major common 3♥ 31(45) New Suit: Forcing NFConst NF 3♠ Dbl: X - 14+ 4M+5m or ♦'s 3♠ 13{45) Jump Raise: Forcing Inv. Weak Other2N minors or strong unbal System on over 2♣ Stayman Puppet 2♣,2♦,2N- only art over 10-12 2♦ Transfer to ♥ 4♦, 4♥ Transfer 3NT to good 4m preempt 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 weak to intermediate w. passed pd Jump Shift:Forcing Inv. Weak 2♠ ♣ or NT invite Neg. Double : Redouble implies no fit 2NT ♦ or weak m's Other: Rubensohl 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. new suit - NAT NF Constr Other 2NT+ - Rubinsohl transfers 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 Natural over <=2+ 1 minor Other: Other: 2M-1=bad raise or any invite, 2M=8LSingle raise Other: 1♦-2♦ F1 SLAM CONVENTIONS Gerber : 4NT: Blackwood RKC 1430 1NT: Forcing Semi-forcing Frequently bypass 4+♦ TURBO in ♣ or ♦ if no relays 2NT: Forcing Inv. to 1NT/1♣ to 4♦ - end of asking sequence signal 3NT: to 2NT Forcing Inv. to vs Interference: DOPI DEPO Level: ROPI P0D1 Drury : Reverse 2-Way Fit 3NT: to Other: Other LEADS (circle card led, if not in bold) DEFENSIVE CARDING Rubinsohl in comp 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 10 to 15 HCP x x x x x x x x x x x x x x x x UD attitude 2♣ Strong Other 6+ ♣, 3/4 mb 5 2♦ asking>>2♥, 2♠ 3 card A K x T 9 x A K J x A Q J x 2♦ Resp: Neg Waiting may have 4M 2♥, 2♠ - 8-11, 5+ Q x K T x A T 9 A 9 x K J J T Upside-Down: 3 to 9 HCP NV: any 5, Vul: 6 2N - inv+ ask 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 3 to 9 HCP NV: any 5, Vul: 6 2N - inv+ ask 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 3 to 9 HCP NV: any 5, Vul: 6 2N - inv+ ask 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. in comp - 2 level only Primary signal to partner's leads Trump Suit Pref. 4th Suit Forcing: 1 Rd. Game Attitude Count Suit preference Foster Echo In comp: NFB, 2NT+ - Rubensohl transfers SPECIAL CARDING PLEASE ASK Dbl of preempt followed by a bid = choice of spots, not extras Last modified: Aug 18 2020 08:10