Spades 1♥
Responses follow Moscito 2007 §2.1.3 and §3.4.
| 1♥ - | |
|---|---|
| 1♠! | (R), CONST+ |
| 1NT! | TRF, 5+♣ |
| 2♣! | TRF, 5+♦ |
| 2♦! | TRF, 5+♥ |
| 2♥! | CONST+, 3+♠ |
| 2♠! | PRE, 3+♠ |
| 2NT! | LIM+, 4+♠ |
| 3♣♦♥ | PRE, 6+# |
| 3♠ | PRE, 4+♠ |
| 3NT! | BAL COG, 4+♠ |
| 4♣♦♥! | SPL, 0–1#, 4+♠ |
Over 3NT opener’s new suit shows shortage.
Relay 1♠
| 1♥ - 1♠! - | |
|---|---|
| 1NT | 4=♠ or BAL MIN 5=♠ |
| 2♣ | 5+♠, 4+♣ |
| 2♦ | 5+♠, 4+♦ |
| 2♥ | 5+♠, 4+♥ |
| 2♠ | 6+♠ |
| 2NT! | MAX, 6+♠, no SPL |
| 3♣♦♥! | MAX SPL, 0–1#, 6+♠ |
After 1NT we depart from Moscito with a structure resembling XYZ. 2♦ is the game-forcing relay, as in XYZ. The two bids around it are invitational and differ only by spade length. 2♣ shows a doubleton spade, and 2♥ shows a singleton or void.
| 1♥ - 1♠! - 1NT! - | |
|---|---|
| 2♣! | INV, 2=♠ |
| 2♦! | (R), FG |
| 2♥! | INV, 0–1♠ |
| 1♥ - 1♠! - 1NT! - 2♦! - | |
|---|---|
| 2♥! | BAL MIN, 4=♠ |
| 2♠ | BAL MIN, 5=♠ |
| 2NT! | 4144 |
| 3♣! | 4=♠, 5+♣ |
| 3♦! | 4=♠, 5+♦ |
Transfer raise 2♥
| 1♥ - 2♥! - | |
|---|---|
| 2NT! | MAX, 5+♠, 4+♦♣ |
| 3♣♦! | MAX, 4=♠, 5+# |
| 3♥! | MAX, 4+♥, 5+♠ |
| 3♠ | MAX, 4144 |
| 3NT | MAX, 6+♠ |
| 4♣♦♥! | SPL |