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Natural 1

  • MIN (11–13): 4+ but not 4333
  • MAX (13–15): 5+ or unbalanced 4= 5+
1-11–15, 4+
1F, 4+
1NTNF CONSTINV, 0–3, 0–3
2FG, 4+#. INV, 5+#, 3= or 6+#.
2PRE, 4+. CONST, 3=.
2PRE, 6+
2NT!INV+, 4+
3!SPL, INV or S/T, 0–1#, 4+
3CONST, 4–5
3NT!Choice of games, 33(43)
3!, 4!S/T SPL, 0–1#, 4+
4S/O
4NT!RKCB 1430

By passed hand

Raises become more constructive because everyone had a chance to bid. Opener can pass invitations with a mimimum 7–8-card fit. The unlisted rebids below 3NT are natural game forces.

P-1-11–15, 4+
2INV, 5+#
2CONST, 3+
3INV, 4+