Previous bidding:
0-1♦
7+♠, 0-1♦
other
values in ♣ and ♥
own good suit
2+♦ fit or no ♥/♣ values
minimum
minimum
minimum
~13-15 HCP (3.25-3.75 HT)
~13-15 HCP (3.25-3.75 HT)
~13-15 HCP (3.25-3.75 HT)
extra
extra
extra
~16-19 HCP (4-4.75 HT)
~16-17 HCP (4-4.25 HT)
~16-17 HCP (4-4.25 HT)
maximum
maximum
maximum
~20+ HCP (5+ HT)
~18+ HCP (4.5+ HT)
~18+ HCP (4.5+ HT)
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