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Stayman 2♣

  • Weak: garbage (3+♠, 3+♥, 4+♦) or crawling (4+♠, 4+♥, 0–4♦)
  • Invitational: 4=♥ or (4=♠, 0–4♥)
  • Game-forcing: (4=♠ or 4=♥), but not (43)(xx)
1NT - 2♣ -
2♦!2–3♠, 2–3♥
2♥4–5♥, 2–4♠
2♠4–5♠, 2–3♥

1NT - 2♣ - 2♦

Second responses above 3NT remain the same, assuming misfit.

1NT - 2♣ -
2♦ -
PS/O, 4+♦
2♥P/C, 4+♥, 4+♠, 0–4♦
2♠INV, 5+♠, 4+♥
2NTNAT INV
3♣FG, 5+♣
3♦FG, 5+♦
3♥!FG, Smolen TRF, 54(xx)
3♠!FG, Smolen TRF, 45(xx)
4♣!TRF, 6+♥, 4=♠, South African Texas
4♦!TRF, 6+♠, 4=♥, South African Texas
4♥♠S/O
4NTQUANT INV to 6NT
5NTQUANT INV to 7NT

1NT - 2♣ - 2♥

  • The quantitative scheme remains, assuming misfit.
  • 3♠ is a generic fit slam try, so 4NT is quantitative instead of RKCB.
1NT - 2♣ -
2♥ -
2♠INV, 5+♠, 4+♥
2NTINV, 0–3♥, 4=♠
3♣FG, 5+♣, 0–3♥, 4=♠
3♦FG, 5+♦, 0–3♥, 4=♠
3♥INV, 4+♥, 0–4♠
3♠!S/T, 4+♥
4♣♦!S/T SPL, 0–1#, 4+♥
4NTQUANT INV to 6NT
5NTQUANT INV to 7NT

1NT - 2♣ - 2♠

  • Only the standard quantitative scheme remains. Now 4♠ is a signoff.
  • 3♥ is a generic fit slam try, so 4NT is quantitative instead of RKCB.
1NT - 2♣ -
2♠ -
2NTINV, 0–3♠, 4=♥
3♣FG, 5+♣, 0–3♠, 4=♥
3♦FG, 5+♦, 0–3♠, 4=♥
3♥!S/T, 4+♠
3♠INV, 4+♠
4♣♦♥!S/T SPL, 0–1#, 4+♠
4♠S/O, 4+♠
4NTQUANT INV to 6NT
5NTQUANT INV to 7NT