Polish 1♣
This Polish Club has 3 variants:
- 12–14, 2–4♠, 2–4♥, 2–4♦, 2–4♣
- 12–17, 5+♣ or 4414
- 18+, not suitable for 1♦
Note that 2♣ is no longer natural since Polish Club 2020: Expert. 1♣ takes care of all ♣-suited hands.
I move invitational hands out of 1♣-1♦ relay to make it non-forcing. I believe this method is more resilient to interference.
| 1♣- | Quasi-NAT or 18+ |
|---|---|
| 1♦! | ART NEG, 0–9. BAL S/T, 15–17, (32)44 |
| 1♥ | F, 7+, 4+♥ |
| 1♠ | F, 7+, 4+♠ |
| 1NT | BAL CONST, 8–10 |
| 2♣ | FG, 5+♣ |
| 2♦ | FG, 5+♦ |
| 2♥! | P/C, 7–9, 4–5♥, 5=♠ |
| 2♠! | INV, 9–11, 6+♣ or 5+ 4+ minors |
| 2NT | BAL INV, 10–11 |
| 3♣! | BAL FG, 12–14 or 18+, 2–3♠, 2–3♥, 3–4♦, 3–4♣ |
| 3♦ | INV, 9–11, 6+♦ |
| 3M | PRE, 3–6, 7+# |
| 3NT | BAL S/T, 15–17, 33(43) |
| 4♣! | PRE, S-SOL 8+♠♥, 0–1 outside A/K |
| 4♦! | PRE, SOL 8+♠♥, no outside A/K |
| 4M | PRE, 8+# |
1♣-3♣♦ and 1♣-3M look unrelated, yet they serve the same purpose: move the best single suiters out of 1♣-1♦.
P-1♣
Game-forcing responses simplify to corresponding invitations.
| P-1♣- | Quasi-NAT or 18+ |
|---|---|
| 2♣ | INV, 5+♣, 0–3♠, 0–3♥ |
| 2♦ | INV, 5+♦, 0–3♠, 0–3♥ |
| 2♠! | UNBAL INV, 0–3♠, 0–3♥, 4–5♦, 4–5♣ |
| 3♣ | INV, 9–11, 6+♣ |