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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♠, 5-12.5, contains mini-raise (4-6 w/3♥) and INV w/3♥
1♥-1NT
5+♠, (4)5+, contains mini-raise (4-6 w/3♥and 5♠) and INV w/3♥and 5♠
1♠-1NT
F1, (4)5-12.5
2♣
2+♣, GF 12.5+ (sbsq. club rebid by responder shows 6+♣)
2♦
5+♦, GF 12.5+ (w/5332 only if good suit)
1♠-2♥
5+♥, GF 12.5+
1♥-2♠
6+♠, 4-6
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/singleton (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, 5♥ 4♠
2♣
11-14, 5♥ 2+♣ or any 15+ that can’t be bid other way
2♦
11-14, 5♥ 4+♦
2♥
11-14, 6+♥
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 s/o
2NT
Mittelman adjunct
3♣
nat INV
3♦
nat INV
3♥
nat INV
1♥-1♠-2♥
2♠
5-10 puppet to 2NT w/minor s/o
2NT
ASK
3♥, 3m
nat INV
1♥-1♠-2♠
2NT
mini-Lebensohl (don’t accept the puppet w/19-20, bid 3NT instead)
3m
GF, lowest stopper
3♥
INV (10-12) w/3♥
3NT
GF, w/o m stoppers
1♥-1♠-2♣-2♦
2♥
11-14, 5♥ 2+♣
Suit
15+, 5♥4+suit
2NT
17-18, 5332
3♥
15-18, 6+♥
3NT
19, 5332
1♥-1NT
2♣
11-14, 5♥ 2+♣ or any 15+ that can’t be bid other way
2♦
11-14, 5♥ 4+♦
2♥
11-14, 6+♥
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♠
INV, 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♠
INV, 6+♠
1♥-1NT-2♦-3♣

With =3550 bid 3♦ first and then 4♠ – but with =3541 bid 3♠ immediately to differ between these distributions

1♥-1NT-2♥
2♠
7-10, 6+♠
2NT
ASK
3m
5♠5+m, INV
3♥
nat INV
3♠
6+♠, INV
1♥-1NT-2♠
2NT
ASK, INV+
3x
INV+, shortness
3♠
6+♠, tactical
1♥-1NT-2♣-2♦
2♥
11-14, 5♥ 2+♣,
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♠ 2+♣ or any 15+ that can’t be bid other way
2♦
11-14, 5♠ 4+♦
2♥
11-14, 5♠ 4+♥
2♠
11-14, 6+♠
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
3♠
nat INV
3♥
INV, 6+♥
1♠-1NT-2♣-2♦
2♠
11-14, 5♠ 2+♣
2♥
15+, 5♠3-4♥
2NT
17-18, =5233
3m
15+, 5♠ 4+m
3♥
15-18, 5♥5♠
3♠
15-18, 6+♠
3NT
19, =5233
1♠-1NT-2♣-2♦-2♠-2NT
3♥
accepted the inv, searching for 5-3
1♠-1NT-2♦
2♥
(5)6+♥, 5-10
2♠
5-10, correction
2NT
Mittelman adjunct
3x
nat INV
1♠-1NT-2♥
2♠
5-10, correction
2NT
Mittelman adjunct
3x
nat INV
1♠-1NT-2♠
2NT
ASK
3x
nat INV
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)
3♦
♦ fragment (=5431/=5440), GF
3 in 2nd suit
55, minimum
3 in 1st suit
64, minimum
3NT
♣ fragment (=5413/=5404), GF

After 2/1 GF:

1♠-2♥, 1♠-2♦ and 1♥-2♦

New suit shows 4+ nat, doesn’t promise extras (Max Hardy style)

Rebidding you suit shows 6+ unless 1♠-2♥-2♠, doesn’t exclude extras w/bad suit (after 1M-2♣ it does)

2NT shows 5332 11-13(14) or 17(18)-19 (after 1♠-2♥ excludes support [=5233])

Jump rebidding your suit: 14.5+, good 6+suit

New suit jump shift: Splinter, 4+ card support for partner’s suit, 14.5+

Raise of partner’s suit: extras, ♦Hxx or 3+♥ (4♥ w/o extras)

1♠-2R-3NT response shows exactly 15-16 and 5332, w/o adequate support for responder’s suit, can’t be =5233!

1M-2♣
2♦
ASK, can be:
  • 5332 11-13(14) or 6+M w/extras, but bad suit
  • 5M 4+♦, 11-20 or 5M 4♣+, 11-14.5
  • 5♠ 4♥, 11-20 after 1♠ or 5♥ 4♠ no extras after 1♥
2M
6+M, w/o extras, can have 4oM
2NT
bal, 17-19
3♣
5422, 14.5+ (w/shortness thru SPL and w/o extras thru 2♦)
3M
good 6+suit, 14.5+
3♦/3oM
SPL
1♥-2♣
2♠
5♥ 4♠ w/extras (14.5+), weaker thru 2♦
1♠-2♣
2♥
5+♥ 5+♠, 11-20
3NT
15-16, 53(32)
1M-2♣-2♦-2oM
cheap M rebid
6+M w/extras, but bad suit
2NT
5332 11-13(14) or 5M 4+♦ w/o extras (sbsq. 3♣ ask, answers 3♦ nat, 3oM FRAG w/♦, w/5332 bid 3M no ♦ stopper, 3NT ♦ stopper)
3♣
nat, 5M 4+♣, extras
3♦
nat, 5M 4+♦, extras
3oM
support, extras
1♠-2♣-2♦-2♠

Natural, show shape (3M would ask for a srs/non-srs)

1♥-2♣-2♦-2♥

Natural, show shape (3M would ask for a srs/non-srs)

1♠-2♣-2♠-2NT (waiting w/extras and w/o spade support or decent 6+♣)
3m
6♠ 4+m
3♥
6♠ 4♥ (w/65 bid as a 55)
3♠
7+♠
3NT
6322
1♥-2♣-2♥-2NT
3m
6♥4+m
3♥
7+♥
3NT
6322 or 6♥ 4♠
1♥-2♣-2♥-2♠(nat)
2NT
6322
3m
6♥4+m
3♥
7+♥
3♠
6♥4+♠

Special situations

1♥-2♦-3♦
3♥
sets ♥, does not promise extras
3♠
GBS (asks for a spade stopper here even it is the 3rd suit!)
4♣
sets ♦, ♣ control
4♦
sets ♦, no ♣ control
4♥
to play, w/o extras (Fast Arrival)
1♠-2♦-3♦
3♥
GBS (asks for a heart stopper here even it is the 3rd suit!)
3♠
sets spades, promises extras
4♣
sets ♦, ♣ control
4♦
sets ♦, no ♣ control
4♥
Kickback
4♠
to play, w/o extras (Fast Arrival)
1♠-2♥-3♥

Hearts set as trumps with srs/non-srs (with Jxxxx or worse responder can correct 6♥ to 6♠ later)

1M-2♣-3♣
3M
sets M, promises extras
3♦ and 3oM
GBS
4♣
sets ♣
4♦
Kickback
4M
to play, w/o extras (Fast Arrival)
1M-2♦

2oM and 3♣ switched, Fast Arrival by responder

1♠-2♥
2♠
6+ not suitable for 3♠ or 5♠ 4+m 11-14
2NT
11-14/17-19
3m
5♠ 4+m, 14.5+
3♥
extras
4♥
Fast arrival
1♠-2♥-2♠
2NT
ask
3m
5♥ 5+m, extras, good texture
3♥
6+♥ 0-1♠/solid ♥
4♥
to play, w/o extras
4♠
to play, w/o extras
1♠-2♥-2♠-2NT
3m
nat, no extras
3♥
6♠
3♠
7+♠ (sbsq. srs/non-srs)

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
3M
ask for a serious/non-serious cue
suit 3rd lvl
singleton
3NT
♣ singleton
suit 4th lvl
void (4♥ spade void after 1♥-2NT-3♣)
3♦
any shortness (sbsq 3♥ ask, responses: lowest/middle/highest)
3oM
6+M 15+
3M
6+M 11-14
3NT
5M 15+
4x
5M 5x

Modified Reverse Drury

[(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
4M
accepted the INV

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

2oM
13-14 INV
4M
have sound INV
2M
9-10
suit
can’t bid 4M, but help-suit KJT9x or better

Passed hand bidding

p-1♥
1♠
5-11.5, semi-F, also with long minor and useful 5-6 points, sbsq. Gazzilli
1NT
5-11.5, semi-F, 5+♠, sbsq. Gazzilli
2♠
7-10, 6+♣
2NT
INV
2NT
7-10, 6+♦
3♣
7-10, 6+♣
3m
INV 10-12
p-1♠
1♠-1NT
5-11.5, semi-F, also with long minor and useful 5-6 points, sbsq. Gazzilli
2♥
7-10, 6+♥
3x
INV 10-12

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