Gazzilli for use in Every 2nd Hand an Adventure

Gazzilli is a convention in constructive bidding to be used in the auctions 1 - 1 and 1/1 - 1NT. The 2 rebid is artificial and includes many strong hands as well as the hands typically included into 2. The version described here is used in the E2HAA system, which means that opener has shown 13+ HCP or both majors. The base ranges therefore are 13 - 17 HCP for weak hands and 18+ for strong hands.

1 auctions

The starting point for Gazzilli is the auction 1 - 1NT (forcing). Responder has a range of approximately 0 - 10 HCP. Opener's rebids now are:

1 - 1NT (forcing) - ?

Response Description Further bidding
2 a) 13 - 17 HCP, 4+
b) 13 - 17 HCP, 5 3 2 3
c) 18+ HCP any
See below
2 13 - 17 HCP, 3+
2 11 - 17 HCP, 4+ (with 5 - 4 majors, opener can be weaker)
2 13 - 17 HCP, 6+
2NT 15 - 17 HCP, 6+ 4+//
3 15 - 17 HCP, 5+ 5+
3 15 - 17 HCP, 5+ 5+
3 15 - 17 HCP, 5+ 5+
3 15 - 17 HCP, 7+

Similarly after a forcing NT after 1

1 - 1 (forcing NT, 0 - 4) - ?

Response Description Further bidding
1NT 11 - 17 HCP, 5+ 4 (with 5 - 4 majors, opener can be weaker)
2 a) 13 - 17 HCP, 4+
b) 13 - 17 HCP, 3 5 2 3
c) 18+ HCP any
See below
2 13 - 17 HCP, 3+
2 13 - 17 HCP, 6+
2 13 - 17 HCP, 6+ 4+
2NT 15 - 17 HCP, 6+ 4+/
3 15 - 17 HCP, 5+ 5+
3 15 - 17 HCP, 5+ 5+
3 15 - 17 HCP, 7+

After Kaplan Inversion:

1 - 1NT (5+) - ?

Response Description Further bidding
2 a) 13 - 17 HCP, 4+
b) 18+ HCP any
See below
2 13 - 17 HCP, 4+ or 2 5 3 3
2 13 - 17 HCP, 6+
2 13 - 17 FP, 3+
2NT - 3 15 - 17 HCP, as above
3 18 - 20 FP, 3+

Passed hand rebids by opener

Opposite a passed hand, a 1 response is natural and 1NT shows 0 - 7 HCP (to play opposite 15 - 17 NT)

1 - 1 (4+) - ?

Response Description
1NT 15 - 17 HCP, balanced
2 a) 13 - 17 HCP, 4+
b) 18+ HCP any
2 13 - 17 HCP, 4+
2 13 - 17 HCP, 6+
2 13 - 17 FP, 4+
2NT+ 15 - 17 HCP, see above

With a passed hand, the 1NT response is weak:

1 - 1NT (0 - 7) - ?

Response Description Further bidding
Pass 15 - 17 NT
2 a) 13 - 17 HCP, 4+
b) 18+ HCP any
2 13 - 17 HCP, 4+
2 13 - 17 HCP, 6+
2 13 - 17 FP, 6+ 4+
2NT+ 15 - 17 HCP, see above

Responder's Rebid

After the artificial 2 rebid, responder limits his hand:

1 - 1NT - 2 - ?

Response Description Further bidding
2 6+ HCP, any distribution
(GF opposite the strong variation)
See below
2 0 - 5 HCP, 6+
2 0 - 5 HCP, usually 2+
2NT 0 - 5 HCP, short , 4+
3 0 - 5 HCP, 6+
3 0 - 5 HCP, 6+
3 Invitational, 3

Opener's second rebid

After the 2 rebid, opener returns to his first suit to show the weak variation, all other bids show the strong variation. Bids of 2NT and higher are similar to direct rebids of 2NT and higher, only stronger. Two of the other major shows nondescript hands: 1 - 1NT - 2 - 2 - ?

 

Response Description Further bidding
2 18+ HCP, 5 + 4// or 5 3 2 asks
2 13 - 17 HCP
2NT 18+ HCP, 6 + 4//
3 18+ HCP, 5+ 5+
3 18+ HCP, 5+ 5+
3 18+ HCP, 5+ 5+
3 18+ HCP, 6+
3NT 18 - 20 HCP, 5 2 3 3

1 - 1 (forcing NT) - 2 - 2 - ?

Response Description Further bidding
2 13 - 17 HCP
2 18+ HCP, 5 + 4// 2NT asks
2NT 18+ HCP, 6 + 4//
3 18+ HCP, 5+ 5+
3 18+ HCP, 5+ 5+
3 18+ HCP, 6+
3NT 18 - 20 HCP, 5 3 3 2

Secondary Relay

1 - 1NT - 2 - 2 - 2 - 2 - ?
Response Description
2NT 18+ HCP, 5 3 3 2
3 18+ HCP, 5 4
3 18+ HCP, 5 4
3 18+ HCP, 5 4

1 - 1 - 2 - 2 - 2 - 2NT - ?
Response Description
3 18+ HCP, 5 4
3 18+ HCP, 5 4
3 18+ HCP, 5 4
1