DEFENSIVE AND COMPETITIVE BIDDING

Transcription

1 DEFENSIVE AND COMPETITIVE BIDDING LEADS AND SIGNALS W B F CONVENTION CARD OVERCALLS (Style: Responses: 1 / 2 Level; Reopening) OPENING LEADS STYLE 1 level = 8+ Lead In Partner s Suit CATEGORY: Green 2 level = 11+ Suit natural Low from Hxx NCBO: Sri Lanka Bridge Federation NT 4 th best high PLAYERS: Janani Wijeyeratne & Charika Muthiah Subseq Sri Lanka Ladies Other: EVENT: BFAME 2013, Ahmedabad, India Updated: 7 th May NT OVERCALL (2 nd /4 th Live; Responses; Reopening) LEADS SYSTEM SUMMARY Lead Vs. Suit Vs. NT Ace From AK GENERAL APPROACH AND STYLE King From KQ SAYC Queen From QJ9x NT Jack JTx 5 card major openings JUMP OVERCALLS (Style; Responses; Unusual NT) 10 Txx With 3D and 2C, open 1C weak 9 With 4D and 4C, open 1D Hi-X even Lo-X odd Reopen: SIGNALS IN ORDER OF PRIORITY DIRECT & JUMP CUE BIDS (Style; Response; Reopen) Partner s Lead Declarer s Lead Discarding SPECIAL BIDS THAT MAY REQUIRE DEFENSE 1 attitude count natural Suit attitude VS. NT (vs. Strong/Weak; Reopening;PH) NT 2 3 Signals (including Trumps): DOUBLES VS.PREEMTS (Doubles; Cue-bids; Jumps; NT Bids) TAKEOUT DOUBLES (Style; Responses; Reopening) If pattern 10+ VS. ARTIFICIAL STRONG OPENINGS- i.e. 1 or 2 SPECIAL, ARTIFICIAL & COMPETITIVE DBLS/RDLS SPECIAL FORCING PASS SEQUENCES OVER OPPONENTS TAKEOUT DOUBLE IMPORTANT NOTES PSYCHICS:

2 OPENING TICK IF ARTIFICIAL MIN. NO. OF CARDS NEG.DBL THRU DESCRIPTION RESPONSES SUBSEQUENT ACTION COMPETITIVE & PASSED HAND BIDDING 1 2 2S Natural, 1NT= S Natural, 1NT= S S INT Stayman & transfers or < 4 loser 2D = negative NT Stayman & transfers 3NT 23+ 4NT Long good suit with 12-15pts HIGH LEVEL BIDDING 5 Long good suit with pts 5 Long good suit with pts 5 Long good suit with pts

3 CONVENTION CARD OF JANANI WIJEYERATNE AND CHARIKA MUTTIAH Bidding System - Standard American Yellow Card (SAYC) with few minor variations GENERAL DESCRIPTION OF SYSTEM Bidding System : Standard Americal Yellow Card (SAYC) Leads : 4 th highest, top of sequence (leads are variable by agreement) Signals : High/Low Discards : High/Low or Low/High in suit Strength of INT openers : C Response to INT opener is: Staymen (Normally with a 4 card major) FULL DESCRIPTION OF SYSTEM OPENING BIDS Opening bid Point range Min Length Conventional Special Meaning Responses 1C 12*-21 2 See notes 1-2 1NT responses 6-9 HCP non-forcing 1D 12*-21 4 See notes 1-2 2NT response - see note 5 1H 12*-21 5 See notes over 1 change of suit 11+ 1S 12*-21 5 See note 1-2 1NT Stayman, transfers hearts/spades/clubs/ diamonds 2C 22+ Strong, artificial See note 3 2D NT is game interest. Opener bids 2H a feature or 3NT if maximum 2S Change of suit forcing 2NT Stayman, other bids natural 3NT Stayman, other bids natural 4NT NT NT bids Pre-emptive 4 bids Pre-emptive OVERCALL S Simple Jump INT Direct 1NT Protective Natural, wide-ranging, Change of suit by responder, forcing Weak - 6 card suit at 2 level. Usually 7 at 3 level , responses : Stayman, natural as per 1NT opening 10-15, responses : Stayman, natural as per 1NT opening Page 1

4 2NT Direct Unusual if a jump - see Note 6. Responses are limit bids 2NT Protective See above Doubles Strong over 13 DEFENSIVE BIDS Opponents open : Defensive methods Strong 1C : Natural Weak 1NT : Double -Penalties, Overcalls are natural Strong 1NT : As above Weak 2 : Double - take-out - Cue - Michaels Weak 3 : Double - take-out - Cue - Michaels 4 of Minor : Double - take-out - Cue - Michaels 4 of Major : Double - penalty Multi 2D : Natural ACTION OPPONENTS INTERVENE WITH Simple Overdraft : Doubles are : Take-out over bids up to 25, promises 4 cards in any unbid major Bids are : New suit forcing. 2 of a major is 5+cards and 11+ pts Jump Overcall : Doubles are : Take-out over bids up to 2S, promises 4 cards in any unbid major Bids are : New suit forcing Double : Redouble is : Strong (10+) New suit is : Forcing at 1 level - & 2 level Jump in new suit : Forcing - to play Jump raise is : Forcing 2NT is : Good raise SPECIAL USES OF DOUBLES : Doubles of opening NT bids or NT overalls for penalties, following which all subsequent doubles are for penalties. Otherwise, all doubles of suit contracts up to and including 2S are for take-out. Eg 1S Dbl 2S Dbl -both doubles are for take-out Doubles of artificial bids show the suit bid Redoubles are SOS up to 3S except when an artificial bid has been doubled. SLAM CONVENTIONS Convention Meanings of Reponse Action over interference Blackwood 5C - 0/4 or 5D=1, 5H= 2, 5S=3 aces DOPI 5NT Grand Slam Force Page 2

5 OTHER CONVENTIONS UCBs (Unassuming Cue Bids) - opposite partner s overcall, a cue bid shown a good raise OPENING LEADS Normal leads against suit contracts : 2 nd and 4 th highest AK AKx KQ10 KQx KJ10 K109 QJ 10 QJx J10x 10xx 109x 987x 10xxx Hxxxx Hxxxxx Hxxx Hxx xx xxx xxxx Normal leads against NT contracts : 2 nd and 4 th highest AKxx AJ1Ox KQ10 KQx KJ10 K109 QJ10 QJx J10x 10xx 10xxx 109x 987x Hxx Hxxxxx Hxxxx Hxxx xx xxx xxxx SIGNALS AND DISCARDS Describe primary method. State alternative in brackets Signals on Partner s lead : Attitude : high - encouraging, low - discouraging Signals on Declarer s lead : Attitude Discards : Attitude Exceptions to above : Count SUPPLEMENTARY DETAILS Note 1 Balanced Hands not With 4-4 in the minors, open 1D. With 3-3 in the minors, open 1C, 1D is only three cards if shape is Unbalanced Hands. Always open the longest suit. With two five-card-or-longer suits, always open the higher Note 2 After a one-level response, 1NT -13/15, 2NT -19/21 Note 3 2C -2D response is a relay but other bids are positive and specific major or 4 of opener s minor Note 4 Transfer breaks are only by jumping in the agreed suit 1NT (No) 2S -Jacoby Transfer to 3C This will be passed or converted to 3D (to be passed) 1NT (No) 2NT - invitational to 3NT 1NT (No) 3C or 3D are invitational to 3NT with a 6+card suit 1NT (No) 3H or 3S are 6+ card suit with slam interest After 1NT (Dbl), Stayman and transfers apply After 1NT is overcalled, Stayman and transfers do not apply, but a cue bid is strong Page 3

6 Note 5 2NT response to 1H or 1S opening bid is pts balanced hard not agreeing trumps Jump to 4 of trump suit to show max 14. 3NT 15-17, 3 of trump suit 18+ This convention does not apply after interference by opponents 2NT response to 1C or 1D opening bid is and forcing; 3NT response is Page 4