RESPONDENT'S STRENGTH ZONES
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The respondent's points are always the same! All the time !
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How are the respondent's strength zones calculated ?
Quite simply in relation to the opener's points: the opener has informed you of his strength and the total points of the camp may or may not take you to the round.
Number of points needed at the request of a round: 25 HL points for 3NT and 27 HLD points for 4 ♠ or 4 ♥
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the first respondent zone
No matter how strong your partner is, inside the promised opening zone your point total never gets you up the sleeve.
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the second respondent zone
You might have the round if the opener is not minimum of the promised area.
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the third respondent zone
No matter how strong your partner is, you still have enough points to claim the round.
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the three zones of the respondent facing a weak opener
In front of an opening of the first zone (12-14H, 13-15HL or 13-16HLD,) the three zones of the respondent break down as follows:
Zr1 : 6 to 10.
Zr2 : 11 to 12.
Zr3 : 13 or more
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the three zones of the respondent facing an average opener
In front of a second zone opening (15-17H, 16-18HL or 17-19HLD,) the respondent's zones are:
Zr1 : 0 to 6
Zr2 : 7 or 8..
Zr3 : 9 or more
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the three zones of the respondent facing a strong opener
Opposite a third zone opening, the respondent's zones are:
Zr1 : 0 to 3 .
Zr3 : 4 or more
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Any bid by the respondent in front of a strong opening is therefore forcing a round.
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The respondent's three zones when faced with an ambiguous bid
Defining the three respondent strength zones may seem tricky in the face of an ambiguous opener bid. Indeed the opening of 1 to the color covers the three zones. An economical bicolor of the opener is in Zo1 or Zo2.
To define the respondent's zones, we will always assume that the partner is in the minimum zone of his bid . It is indeed easier for him to continue the auction with a surplus of force.
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In summary
For this synthesis, we will take the hypothesis of an SA round.
I am in Zr1 if the total never reaches 25.
I'm in Zr2 if the total comes to 23-24, and maybe 25.
I am in Zr3 if the total is still 25.
