Gazzilli

After an opening 1 and a response of 1/1N, Gazzilli uses an artificial 2 bid with any of these hand shapes:

any 5-3-3-2
5+ and 4+ Clubs with 11-16 HCP.
any shape with 17+ HCP.

Opener's bids after 1 - 1N:

2 = Gazzilli (in next section)
2/2 = natural, 11-16 HCP
2 = 6+ Spades, 11-14 HCP
2N - ... = 6 Spades + another 4-card suit and 17+ HCP. Alertable.
- ... - 3 = asks about opener's side suit. Game forcing. Opener bids:
  3         = 4 Diamonds
  3         = 4 Hearts
  3         = 4 Clubs
- ... - 3// = to play
3// = 5-5 shape and 14-16 HCP
3 = 6+ Spades and 14-16 Spades
4// = 6 Spades and 5 of the suit bid and 14-16 HCP,

Responder's bids after 1 - 1N - 2:

2 - 2 = relay, 7+ HCP. Opener rebids:
2 - ... = relay to 2
... - 2 = accepting the relay
2N - ... = 5 Spades, 4 Clubs, 15-16 HCP
3// = 5 Spades, 4 //, 17+ HCP
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2 - ... = 5+ Spades, 11-14 HCP
2N - ... = 5 Spades with 5-3-3-2 and 15-17 HCP
3// - ... = 5 Spades, 5+ of suit bid, 17+ HCP.
3 - ... = 6+ Spades, < 3 Hearts, and 17+ HCP
3N - ... = 5 Spades with 5-3-3-2 shape and 18-19 HCP
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... - 2 = to play
... - 2 = 2-3 Spades, to play
... - 2N = both minors, weak
... - 3 = 5+ Clubs, sign-off
... - 3 = 6+ Diamonds, sign-off
... - 3 = 5+ Clubs, 1 Heart, 8+ HCP
... - 3 = 3 Spades, 10-12 HCP
... - 3N = 5+ Clubs 1 Spade, 9-10 HCP

Bidding after 1 - 1N is similar to the above. For the exact bids and for more information about Gazzilli, see the ACBLUnit390 web page.