1. John Du Bose and Christoph F. Eick Loosely Kaplan Sheinwold
SPECIAL DOUBLES
Neg.  4
Resp. 4
X of 4th seat o’call after
1m-1Y shows 15+ bal.(2S)
Maxi X=bal. GT
NT OVERCALLS
15-18-HCP (also 2M-2NT)
4-suit transfers, X=pen, XX2C,
Rev. Leb.; after X: same weak NT
Bal. 1NT: HCP sys. on
2NT:=2-lower-Unb.(not 13-15)
Bal. 2NT=19-20 HCP system on.
John Du Bose and Christoph F. Eick
Loosely Kaplan Sheinwold
Strong Forcing Openings = 2, 4, 4
SIMPLE O’CALLS
5-16
RESPONSES
Ov. 1-Lvl: New suit NF (8+-12);
Cue =1RF; Jcue3lvl= 4+tr. 7-9
Ov. 2-Lvl: Cue= LR+, new suit
1-round-force
JR = Preemptive (<7)
JSS= HCP 6+tr. INT
Neg XX = LR & 3 trumps
Snapdragon(4th&Jx+)4
Vs. STRONG 1NT Dir/Bal
Dbl = 1-Suiter (10+ HCP opp. UNP)
 or 
 or 


Vs. WEAK NT Dir/Bal
2 = 1-Suiter, Dbl = 15+ HCP
2, 2, 2 = as above, 2NT=C+red
Strong NT-Defense vs. 2NT
NOTRUMP OPENING BIDS
1NT: st&2nd
1NT: rd&4th
Bad 5-card major possible.
Ov.2 artificial: systems on
2 =NF Stayman (2= Weak (+other), 2= invit., 3m=invit.
3M invit., 4C=Gerber, 4=RCKB for last bid suit, 4NT=quant.)
2= game-forcing Stayman (3NT=4(m)-3-3-3; 3M=(5(cm)-4(H)-2-2))
2NT3/3 3(weak/strong; new suit Splinter, 3NT= bal. SLTR)
3= Splinter, 4-4 or 4-3 in M; 3/3 = Splinter in m
Over opp. X: 2-suited runouts, XX2(1-suiter, weak or invite,
3X=preemptive, 2NT(game-forcing Stayman).
In comp.: 2NT Rev. Lebensohl (3C=no, 3D=stopper(cont. 3M forcing)),
FASS, new-suits=non-forc., jump-new-suit=invitational,
neg. X thr. 3 (promises 9+HCP and 2+cards in the shown suit;
applies if exactly one suit is known; otherwise, X is for penalty).
2NT: 20-21/21-22(3rd&4th)
Puppet, Jacoby, Texas
3S3NT(m-SLT, 4NT=neg.).
3NT: broken m (Zm=pass or corr.)
OVER OPP’S DOUBLE
New suit 1-level forcing
JSS is 7-9 HCP 6+ cards
XX = implies no fit, 10+ HCP
Raises: single(3-7), 1NT(7-10),
jump raise (3-6), 2NT(10+).
JUMP OVERCALLS
Preemptive in direct seat
(also 1m-3m & 1NT-3X)
Intermediate (12-15) balancing
1M-3M asks for stopper
2D-4D majors & 8 tricks
2M-4m(m+oM) & 8.5 tr.
VS. PREEMPTS
Takeout Double thru 4
Over 2Z: Lebensohl ov. X(0-7, 3Y
sh. 7-11, FASS), 2Z-3Z stopper?? .
MAJORS
1H rarely on 4-card suit
1S never on 4-card suit 1st/2nd
1S occasionally 4-suit 3rd/4th
RESPONSES
Double Raise = Limit
(preemptive in competition)
Jacoby 2NT by UPH, 2over1GF
4m/3NT(oM): Splinters(11-14)
1NT Forcing by UPH(4-13 HCP)
2NT(PH) = invt. 5+ or 4&4oM
Rev. Drury(promises fit(3+))
JSS UNP: good suit 8-11HCP
JSS PH is Splinter(10+ HCP)
1H-1S usually a 5-card suit
MINORS
3+ Card Suit
RESPONSES
Raises: 2m(12+), 2H(9-11),
2S(7-9), 3m(3+-6); I.c.: Q= LR+,
3m=wk.; 2m=single raise
1C-1NT = 5-8(4-5C); 2NT(13-15,18+);
3NT(16-17); 1NT rebid (15-17/16-18):
2C2D(invt. or signoff C/D);
2D=art. GF, 3X= dist. SlamTry.
1m-1H-1NT-2S= invit., 4-4
1C-2D/1D-3C= natural,~6-8HCP
1C-1M: could have longer ¨
1D-2C=9+, 2D/3C cont. nonf.
1m-3M, 1C-3D, 1m-4Z =weak
OPENING PREEMPTS
LIGHT
4m Namyats (8-8.5tr.;
8.5-9tr. vul. vs. not)
DIRECT CUEBID
Michaels (not 13-15)
Natural over. Artificial
SLAM CONVENTIONS
Gerber over 1/2 NT &1NT-2C (0/4,1,...); 5C Gerb. ov. 3NT/q4NT
RKCB for agreed or last bid suit (0/3, 1/4, 2, 2+Q,2+void,3+void)
and Q ask (no Q, number of K’s); 4D/4H RCKB C/D if fit
JSS 5-level:= Excl. RCKB (if fit);
Jump 5NT:= Pick a Slam; Fast Arrival = No Interest;
Over Interference: DOPI, ROPI;
2 = STRONG & ARTIFICIAL
Responses: controls(0-1,2,3,4,5); CHS3L=2NEG;
3D/3H/3S/3NT(C):= 6 card suit 2/3 top, no outside A/K.
in comp.: X/XX = 0 contr., p= 1-2 contr., other: 3+ contr.
DEFENSIVE CARD PLAY
Opening Leads vs. Suits = 3/5th Best
Mark Card Lead : xx xxx xxxx xxxxx xxx…(raised suit)
AKx KQx KQJx QJx JT9 T9x KQT9
KJTx KT9x QT9x
Opening Leads vs. NT = 4th best
Mark Card Lead: AKJx AQJx AJTx AT9x
KQJx KQT9 KJT9 KT9x QJTx QT9x
JT9x T9xx xx xxx 9xx Txx xxxx xxxxx
Lead of K asks count (and unblock A,Q,J vs. NT);
A asks attitude; Rusinow Q/J/T/9 opening leads.
Standard Carding, Roman Discards (odd pos.)
After trick 1: standard honor leads, 4th best,
high spot asks shift.
(T=10, M=major, m=minor)
2= INT ( HCP, 5 & 4 & no void)
Responses: 2NT asks distr. and str.; 3M is SLTR in M UNP
2/ 2  WEAK (5-10 HCP & 6 card suit (2+ of 4 top)
except in 3rd seat, HCP in 4th seat), McCabe(2NT3C(3M inv.))
Responses: 2NT/3C asks feature/shortage (3NT=0-1).; RONF.
OTHER CONVENTIONAL CALLS
SJSS i.c :7-9&long suit, 4SAGF, Wolff Signoff ov. 1X-1Y-2NT;
12Strong: 1NT/X(2 suits excl.) & 2 ( +  or ; SOS XX
1NT(str.)-X(us)-2Z-X:=compete!;UNovUN (LoQ = LR+, HiQ=GF4th);
1m-1NT-2C=H+S; 1M-1NT-2m=m+oM; 2suited_bid-x-xxnextBid
Lebensohl(weak) over reverses; 1X-1Y-2R-2Y=1R-force; other GF
Ov. opp’s 1X-p-1Y: 1NT(5-5,not 13-15)/ 2NT(5-5,13-15); 2X/2Y nat.