SPECIAL DOUBLES NOTRUMP OVERCALLS After Overcall: Penalty Direct: 15 to 18 Systems on NAMES Jan Jansma Chris Willenken Negative thru Conv. GENERAL APPROACH Balancing: 11 to 15 Responsive : thru Maximal 1♣ is either 12-14 BAL, 16+ UNBAL with 5+♣, or 18+ 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 14-16+ BAL SIMPLE OVERCALL NOTRUMP OPENING BIDS 2♣ ♥+♠ ♥+♠ 1NT 2NT 20 to 22- 1 level 7 to 17 HCP (usually) 2♦ ♥ or ♠ ♦+M 15 to 17 3♣ Puppet STMN Puppet Stayman often 4 cards very light style 2 ♥ Transfer Responses: ♥ + m NAT to 3♦ 5-5+ minors GF Responses 2♠ ♠ + m NAT Jacoby Texas 5-card Major common 3♥ 3-1-(5-4) New Suit: Forcing NFConst NF 3 Dbl: PEN Artificial 3♠ 1-3-(5-4) ♠ Both minors Jump Raise: Forcing Inv. Weak Other System on overDBL/2♣ 4x= 2-under slam try+ Jump Cue= Mixed 2N/1M= str raise 2♣ Stayman Puppet Texas through 4♣ 2♦ Transfer to ♥ 4♦, 4♥ Transfer 3NT to 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 (TRF denies) Conventional NT Openings 2-suited at 2 level and (1M)-3m Jump Shift:Forcing Inv. Weak 2♠ Size Ask or ♣ Neg. Double : Redouble implies no fit 2NT ♦ 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. 4♣= Opt. RKC (4♦/♣) Other trf/DBL, Jump raise= Mixed 1st/2nd 1♣ 3rd/4th 1♦ DIRECT CUEBID VS Opening Preempts Double Is RESPONSES RESPONSES OVER: Minor Major Takeout thru Penalty Natural Double Raise: Force Inv. Weak Double Raise: Force Inv. Weak Conv. Takeout: Leaping Michaels 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 (1M)-2M= 4oM + ♣ Other: (2♦/3m)-4♦= ♥+♠ Other: Jump raise= Mixed JS= INV Single raise Other: SLAM CONVENTIONS Gerber : 4NT: Blackwood RKC 1430 1NT: Forcing Semi-forcing Frequently bypass 4+♦ 2NT: Forcing Inv. to 1NT/1♣ 8 to 10(11) DEPO with "system on" 3NT: to 2NT Forcing Inv. 11 to 12 vs Interference: DOPI DEPO Level: ROPI Drury : Reverse 2-Way Fit 3NT: to 1M-2♣ cld be 0♣ with 4+M Other 1M= 8+ HCP with oM BUPH LEADS (circle card led, if not in bold) DEFENSIVE CARDING Other: JS NAT INV 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 2♣ Strong Other 6+♣ or 2♦ relay, 2M NF, A K x T 9 x A K J x A Q J x 2♦ Resp: Neg Waiting 5♣+4M with shortness2N->3♣, 3♣ INV, 3x FG Q x K T x A T 9 A 9 x K J J T Upside-Down: 11+ to 17 HCP 4414 or 4405 2N->3♣, 3♣/3M INV 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 6 to 10 HCP Constructive 2N-then-4♣ RKC 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 6 to 10 HCP Constructive 2N-then-4♣ RKC 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 TRF Checkback Smith EchoREV Weak Jump Shifts: In Comp. Not in Comp. Fit jumps when we don't open 1♣ Primary signal to partner's leads Trump Suit Pref. 4th Suit Forcing: 1 Rd. Game Herbert Negative BPH Attitude Count Suit preference Foster Echo Transfers after they overcall 1m or DBL 1M Cheapest SUIT weak after reverse SPECIAL CARDING PLEASE ASK "1NT system on" after we open 1♣ and they bid at the 2+ level Unusual v. Unusual (lower cue= usually 4th suit GF) Last modified: Jul 19 2016 09:27