Strong 1♣
Blueberry employs an approach similar to Viking Precision 2007. However, I frown at extensive transfers. It would be annoying to declare the phoney strain the strong opener actually holds.
| 1♣ - | |
|---|---|
| 1♦! | ART NEG, 0–7 |
| 1♥! | FG: 5+♥ or BAL 13+ |
| 1♠ | FG, 5+♠ |
| 1NT | BAL FG, 8–12 |
| 2♣♦ | UNBAL FG, 5+# |
| 2♥! | FG, 5+ 4+ minors |
| 2♠! | FG, 8–12, (4441) |
| 2NT! | S/T, 13+, (4441) |
| 3♣! | FG, SOL 7+ suit |
| 3♦♥♠ | FG, S-SOL 7+# |
| 3NT! | FG, S-SOL 7+♣ |
| 4♣! | PRE, S-SOL 7+♠♥, 0–1 outside A/K |
| 4♦! | PRE, SOL 7+♠♥, no outside A/K |
| 4♥♠ | PRE, 7+# |