1M Opening

For the sake of simplicity are all Gazzilli ranges described as 15+ and (11)11.5-14. At Matchpoints we are more conservative, the strong range is closer to 16+ so the 2♦ response to 2♣ rebid is 8+ At IMPs is the real borderline is somewhere between 15 (mainly hands w/M 6-card) and 15.5. Use your judgment.

After third and fourth seat 1♠ opening, 1NT response is semi-F.

1M-1NT and 1♥-1♠:

openers rebid: w/6M4m on 2nd lvl?

11-12 show 6 cards

13+ show 10(9) cards if your 6M is not KQJTxx or better

With 6♠ and 4♥, only skip an extremely poor heart suit

Types of raises

1♥-(1♠) Hand type ODR (1 is highest)
6 QT43 J7654 652 Offensive raise - preemptive, obstruction 1-2
65 KT43 J765 KT6 Mixed raise – semiPRE 2-3
6 QT43 765 KQT65 Mixed raise with a good sidesuit 2
A6 Q543 K76 QT65 Limit raise with sound defensive values 3-5
65 A843 76 KQ865 Limit raise with a good sidesuit 3

Simple constructive raise

7-10K&R, might be with a four card support w/4333 or 4432 strong doubleton - defensive hand

Fitjumps and Fitnonjumps (FJ/FNJ)

Fit(non)jump is supporting your partners suit by showing a concentrated 4+sidesuit.
It shows fairly good ODR (or better).
When forcing to the third level, it could be INV+ or mixed, depends on the bidding space.
When jumping to the 4th level, it shows a source of tricks (good 5+suit) and offensive playing strength.
When bidding FNJ on the 4th level, you could have a mediocre 4-suit with offensive hand.
A jump to game is always to play.
Partner opens 1M or overcalls 1 or 2M: 4m in comp is always FJ/FNJ.

1♥-(1♠)-3m are FJ because we have TRF to minors

By a passed hand after 1M opening - see basic system

1♦-(1♥)-3♣is FJ because we have ♣ TRF (1♠ then bid GF or INV clubs)

When to show sidesuit

65 K753 642 AJ92
Fairly good ODR = you can show your club suit
Q6 QJ53 QT6 AJ92
Horrible ODR = do not - limit raise w/sound def

Prefer to show a sidesuit, do not distinguish between INV+ and mixed when the bidding space allows your partner to ask.

Responding to a 1M opening

1♥-1♠
0-4♠, 5-10, contains mini-raise (4-6 w/3♥)
1♥-1NT
5+♠, (4)5+, contains mini-raise (4-6 w/3♥and 5♠) and INV w/3♥and 5♠
1♠-1NT
5-10 NonForcing
2♣
0+♣, GF 12.5+
1♥-2♦
INV any
1♠-2♥
INV any
1♠-2♦
5+♥, GF 12.5+
1♥-2♠
SPL w/ singleton
2M
7-10, simple raise
2NT
4+M, 16+
3♣
4+M, mixed
3♦
4+M, INV
3M
4+M, PRE
1♥-3♠
SPL w/void (3NT ask)
1♠-3♥
SPL, 3♠ ASK (4x singleton, 3NT void [4♣ ASK, 4♠♣void])
3NT
12.5-15, any 4333 (up to 5 controls)
4♣
12.5-15, 4+M w/2KC + feature (trump Q, 3rd KC, void)
4♦
12.5-15, 4+M, can’t bid 4♣
4oM
to play
4M
offensive raise, up to 10

Gazzilli w/Kaplan Inversion

1♥-1♠
1NT
11-14 bal
2♣
11-14, 5♥ 4+♣ or any 15+ that can’t be bid other way
2♦
11-14, 5♥ 4+♦
2♥
11-14, 5+♥ 4♠
2♠
17-20, 5♥ 4♠ (15-16 thru 2♣-2♦-2♠)
2NT
19-20, 6+♥ or 5♥5+m
3m
15-16, good 5♥5+m
3♥
15-16, good 6+♥
4m
15-16, good 5♥ 6+m
1♥-1♠-1NT
2m
5+m
2M
to play
2NT, 3x
nat INV
1♥-1♠-2♣
2♦
9+
2♥
(4)5-8, 2-3♥
2♠
5-8, =4144 or =41(35)
2NT
5-8, 54+ minors
3m
5-8, 6+m
3♥
INV w/3♥
1♥-1♠-2♦
pass or 2♥
5-10, preference
2♠
puppet to 2NT w/minor INV
2NT
Mittelman adjunct
3♥
nat INV
3♣
weak s/o
3♦
5-10, 4+♦
1♥-1♠-2♥
2♠
to play
2NT
minors
3m
to play 5-10
1♥-1♠-2♠
2NT
mini-Lebensohl (don’t accept the puppet w/19-20, bid 3NT instead)
3m
GF, lowest stopper
3♥
INV w/3♥
3NT
GF, w/o m stoppers
1♥-1♠-2♣-2♦
2♥
11-14, 5♥ 4+♣
Suit
15+, 5♥4+suit
2NT
17-18, 5332
3♥
15-18, 6+♥
3NT
19, 5332
1♥-1NT
2♣
11-14 bal or any 15+ that can’t be bid other way
2♦
11-14, 5♥ 4+♦
2♥
11-14, 5+♥ 4+♣
2♠
11-14, 3+♠
2NT
19-20, 6+♥ or 5♥ 5+m
3m
15-16, good 5♥ 5+m
3♥
15-16, good 6+♥
4m
15-16, good 5♥6+m
1♥-1NT-2♣
2♦
9+
2♥
(4)5-8, 2-3♥
2♠
7-8, 6+♠
2NT
5-8, =5044 or =51(43)
3m
5-8, 5♠5+m
3♥
INV w/3♥
3♠
GF, 6+♠
1♥-1NT-2♦
pass or 2♥
5-10, preference
2♠
7-10, 6+♠
2NT
Mittelman adjunct
3♣
4th suit GF
3♦
nat INV
3♥
INV w/3♥
3♠
GF, 6+♠
1♥-1NT-2♠
2NT
ASK, INV+
3x
INV+, shortness
3♠
6+♠, tactical
1♥-1NT-2♣-2♦
2♥
11-14 bal
2♠
15+, 3+♠
2NT
17-18, =2533
3m
15+, 5♥4+m
3♥
15-18, 6+♥
3NT
19, =2533
1♥-1NT-2♣-2♦-2♥
2♠
9-10, 6+♠
2NT, 3m
nat INV
3♥
GF w/extras, 3+♥
1♠-1NT
2♣
11-14, 5♠ 4+♣ or any 15+ that can’t be bid other way
2♦
11-14, 5♠ 4+♦
2♥
11-14, 5♠ 4+♥
2♠
11-14, 5+♠ 5+♣
2NT
19-20, 6+♠ or 5♠ 5(+)any
3m
15-16, good 5♠5+m
3♥
15-16, good 5♠5♥
3♠
15-16, good 6+♠
4m
15-16, good 5♠ 6+m
1♠-1NT-2♣
2♦
9+
2♥
5-8, 6+♥ or =15(xx)
2♠
5-8, correction (can be even =1444)
2NT
5-8, 54mm+
3m
5-8, 6+m
1♠-1NT-2♣-2♦
2♠ 11-14, 5♠ 4+♣
2♥ 15+, 5♠3-4♥
2NT 17-18, =5233
3m 15+, 5♠ 4+m
3♥ 15-18, 5♥5♠
3♠ 15-16, bad suit 6+♠
3NT 19, =5233
1♠-1NT-2♦
2♥
(5)6+♥, 5-10
2♠
5-10, correction
3x
nat nf
1♠-1NT-2♥
2♠
5-10, correction
2NT
minors
3x
nat nf
1♠-1NT-2♣-2♦-2♥
2♠
ASK, then:
3♥ 4♥
3m 5♠ 3♥ 4m 1om
2NT 15-16, =5332
3NT 17-19, =5332
1M-1x-2NT
3♣
ASK (nat, 3NT 5M 5♣)
3M
support w/extras
4M
support w/o extras
1M-1NT-2NT-3♣-3M-3NT
4x
control

F1 2NT INV+ opposite 6+M

1♥-1♠-2♥-2NT
3m
4+m, min
3♥
min
3NT
max
1♥-1NT-2♥-2NT
3m
4+m, min
3♥
min
3♠
♠Hx, max
3NT
at best xx in ♠, max
1♠-1NT-2♠-2NT
3m
4+m, min
3♥
shortness, min
3♠
6322 or 7222, min
3NT
max

Mittelman adjunct

1♠-1NT-2♥-2NT

1♠-1NT-2♦-2NT

1♥-1♠-2♦-2NT

1♥-1NT-2♦-2NT

nF ASK

Example after 1♠-1NT-2♥-2NT:

pass
54, minimum
3♣
puppet to 3♦, maximum, 55 (3♥) or 64 (3♠) or 54 (3NT)

Any invitation

(1♥-2♦ and 1♠-2♥)

2M
waiting (can be strong, or just waiting)
2♠
5♥ 4♠ 11+ (responder then naturally shows his inv)
2NT
17-19 bal
3x
5M 5x weak hand non forcing bid (warning)
3M
good 6+suit (should be very good suit quality, you can opt to bid waiting), 15+
1♠-2♥-2♠-2NT
3m semi-natural, looking for responder’s 5♥
3♥ natural, 4-card support

After 2/1 GF:

1M-2♣
any GF+ that can’t be bid other way
1♠-2♦
5+ ♥
1M-2♣
2♦
any 15+ that can’t be bid other way
2M
min
2NT
bal, 17-19
3x
5M 5x 15+
3M
good 6+suit, 15+
1♥-2♣
2♠
5♥ 4♠ w/extras (15+), weaker thru 2♥
1♠-2♣-2♦-2♠

Natural, show shape

1♥-2♣-2♦-2♥

Natural, show shape

1M-2♣-2♦
2M
nat support
2oM
nat
2NT
waiting
3m
usually 6card slammish
3oM
55 in minors slammish
1M-2♣-2M
2♠
nat
2NT
waiting
3m
usually 6card slammish
3oM
55 in minors slammish
1M-2♣-2♦/2M-2NT

(waiting w/extras and w/o spade support or decent 6+m)

3m
5M 4+m
3♥
5M 5♣+
3♠
5M 5♦+
1♠-2♦
2♥
15+
2♠
min w/o supp
2NT
17-19 bal
3m
5♠ 5m 15+
3♥
better (13-14) w/ supp
3♠
good 6+suit, 15+
4♥
fast arrival
1♠-2♦-2♠-2NT

(waiting w/extras and w/o spade support or decent 6+m, opener denied heart support)

3m
5♠ 4+m
3♥
5♠ 5♣+
3♠
5♠ 5♦+

Special situations

1♠-2♦-3♥
Hearts set as trumps (3♠ is cue bid for hearts)

Simple constructive raise

1M-2M
2M+1 INV+, show your side values (a typical holding for a HSGT bid is Kxx(x), AJx(x), KJx(x)…)
2NT ♠ shortness, INV+
3m shortness INV+
3♥ shortness INV+
3M 6+M, tactical

Promote extra trump length aggressively in game try situations.

Swiss 1M-2NT

3♣
11-14
3♦
asking (none, clubs, diamond, oM)
4x
void
3♦
15+
3M
asking (none, clubs, diamond, oM)
4x
void
3M
6+M 15+ good suit

Follow-ups:

  • Responder’s bids on 4th level are voids.
  • (This applies after Opener’s 3-level rebids. For example, 1M-2NT-3♣-4x shows a void in x.)

Two-way Drury

2♣ (9+ w/3-card support)

2♦ (9+ w/4+card support)

[(p)-]p-(p)-1M-p-2♣ (9+ w/3-card support)

2♦
13-14 INV
4M
have sound INV
2M
9-10
suit
can’t bid 4M, but help-suit KJT9x or better
2M
weak
2oM
nat 54(+), accepted the INV
2NT
17+, no shortness (sbsq. 3x shortness)
3x
17+ w/shortness
4M
no exclusion
control bid
chance for a slam

[(p)-]p-(p)-1M-p-2♦ (9+ w/4+card support)

2M
weak
2oM
13-14 INV
4M
have sound INV
2M
9-10
suit
can’t bid 4M, but help-suit KJT9x or better
2NT
17+, no shortness (sbsq. 3x shortness)
3x
17+ w/shortness
4M
no exclusion
control bid
chance for a slam

When 2nd hand interferes

1♥-(X)
XX
(9)11+, PEN
1♠
7+, 4+♠
1NT
7+, TRF ♣ (with “1NT hand” just pass)
2♣
7+, TRF ♦
2♦
9-10, 3+♥
2♥
5-8, 3+♥
2♠
nat, 6+♠, 4-6
2NT
INV+, 4+♥
3m
FJ
3♥
PRE
3NT
to play
4m
FJ
4M
to play
1♠-(X)
XX
(9)11+, PEN
1NT
TRF ♣ (with “1NT hand” just pass)
2♣
TRF ♦
2♦
TRF ♥
2♥
9-10, 3+♠
2♠
5-8 , 3+♠
2NT
INV+, 4+♠
3m
FJ
3♠
PRE
3NT
to play
4m
FJ
4M
to play
1♥-(1♠)
X
TRF NT, can be INV or GF minor(s)
1NT
INV bal
2♣
nat, nF
2♦
nat, nF
2♥
simple raise
2♠
mixed
2NT
INV+, 3+♥
3m
FJ
3♥
PRE
3♠
GF, 4+♥, ♠ shortness
3NT
to play
4m
FJ
4♥
to play
1M-(1NT)
2♣
2M 5oM
2♦
sound raise, 9-10
2M
light raise, 5-8
2oM
nF
X
(9)11+, PEN
1M-(2m)
X
4+ oM 8+
2om
nat, nF
2oM
nat, nF
2NT
INV+, 3+M (mixed after 1♥-2♦)
3m
mixed (INV+ 3+♥ after 1♥-2♦)
3om
nat, GF
3M
PRE
3oM
FJ
3NT
to play
4m
GF, 4+M, shortness m
4oM
to play
1♠-(2♥)
X
8+, values in minors
2♠
simple raise
2NT
mixed
3m
nat, GF (INV bph)
3♥
INV+, 3+♠
3♠
PRE
3NT
to play
4m
FJ
4♥
GF 4+♠, ♥ shortness
4♠
to play
1♥-(2♠)
X
negative, (8)9+ w/some minor assets
2NT
INV+, 3+♥
3m
nat, GF (INV bph)
3♥
mixed
3♠
GF, 4+♥, ♠ shortness
3NT
to play
4m
FJ
4♥
to play, offensive
4♠
Kickback
1M-(3m)
X
Negative
New suit 3rd lvl
nat, GF
3M
nat, may be stretched
3NT
to play w/stopper
4m
sound raise to 4M
4M
offensive raise
4om
F(N)J
4oM
to play
1♠-(3♥)
X
sound raise to 3♠
3♠
could be stretched NV
4m
FNJ
4♥
sound raise to 4♠
4♠
offensive raise
4NT
minors
1♥-(3♠)
X
DSI3
4m
FNJ
4NT
minors
1M-(4m)
X
Negative
4♦
FNJ
4M
may be overloaded NV
4♥/1♠
to play
4♠/1♥
nat
4NT/1♥
RKCB
4NT/1♠
Kickback
5om
to play

4th hand interference

When they double our Kaplan Inversion and 1♠-1NT

XX
Strong Gazzilli (sbsq. by responder 2♣ 9+, other 5-8, 2NT 5-8 w/♣)
2m or 1NT
11-14 4+ (pass with 5332)
When they overcall 2♣ after our Kaplan Inversion and 1♠-1NT
Pass
11-14 bal or trapping with clubs
X
T/o 15+
2R
nat 11-14
2M
11-14, 6+M
2NT
system on