Gazilli

I've been asked for my notes on Gazilli so here they are. Now you no longer need to weigh up whether to jump rebid on your nice 5-5 shape 15 count, it's in the system!

Gazilli makes most sense in a 2/1 system where the 1NT response to a major opening can be a wide range.

Rebid structure
After opening 1♥ and hearing 1♠ from partner opener rebids like this. The structures if partner responds 1NT to either major opening are identical:

1NT	11 — 14	balanced
2♣	Gazilli
2♦	11 — 16	3+♦
2♥	11 — 16	6+♥
2♠	14 — 16	6♥ & 5♠
2NT	14 — 16	6♥ & 4+m
3♣	14 — 16	5♥ & 5♣
3♦	14 — 16	5♥ & 5♦
3♥	14 — 16	6+♥ (great suit)

Note that all 17⁺ hands go through Gazilli.

2NT rebid
Opener has shown a 6-4 shape with a better than minimum hand. Responder can now bid 3M to play, 3♣ pass or correct or 3♦ asking for the minor.

Gazilli
Gazzilli is a 2♣ rebid after a 1 of a major opening and is either natural showing clubs or conventionally 17⁺. The responses are as follows:

1♥ — 1♠ — 2♣ — ?

2♦	8+	any
2♥	5 — 7	2+♥
2♠	5 — 7	6+♠
2NT	5 — 7	3 suited short ♥
3♣/♦	5 — 7	6+♣/♦

1♥ — 1NT — 2♣ — ?

2♦	8+	any
2♥	5 — 7	2+♥
2♠	5 — 7	3 suited short ♥
2NT	5 — 7	5+♣ 5+♦
3♣/♦	5 — 7	6+♣/♦

1♠ — 1NT — 2♣ — ?

2♦	8+	any
2♥	5 — 7	5+♥
2♠	5 — 7	2+♠
2NT	5 — 7	3 suited short ♠
3♣/♦	5 — 7	6+♣/♦

Priorities
Responder with a weak hand should first look to bid a 7⁺ suit of their own then two of openers major with 2⁺ support finally a shorter suit or three-suited hand.

Follow Up
When responder bids 2♦ opener either rebids their major showing the weak option or any other bid 17⁺ GF.

If responder makes another bid they have a tight range of hands and opener is usually well placed to pick the contract or invite.

2NT and 3NT rebids
If opener rebids 3NT after Gazilli it shows 18 — 19 balanced, 5M332. The 2NT rebid can be used in one of two ways: to show 15 — 17 balanced (if you don't like 5M332 in your 1NT) or like the immediate 2NT rebid to differentiate a sixth card in the major suit.

Examples

West	East
1♥	1♠
2♣	2♦
3♣	3♦
3NT

West shows 17⁺ points, 5⁺♥, 4⁺♣ and a diamond stop. East has shown 4⁺♠ and 8⁺ points. The auction may be over at this point or East can bid on.

West	East
1♠	1NT
2♣	2♦
2♠	3♣

West has a natural 2♣ rebid, East shows 8 — 9 points by signing off in 3♣, 2NT would have been invitational.

West	East
1♠	1NT
2NT	3♦
3♥	4♣

At 3♥ West has shown 14 — 16 points with a 6-4 shape in spades and clubs. East has agreed clubs and is waiting for a cue.

West	East
1♥	1NT
2♣	2♥
3NT	Pass

West has 18 — 19 points balanced. East has 5 — 7 with 2 or possibly 3 hearts. East has denied a long suit.

West	East
1♥	1♠
2♣	2♠
Pass

East has 5 — 7 with 6⁺ spades. West has a natural 2♣ rebid or a poorly fitting 17 count.