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Quantitative

Use "Quantitative" when both declarer and dummy are balance (Imagine both are 4333). To be more specific, the distribution on both hands are usually restricted to (4333), (4432) and (5332) So in this case, High Card Point(HCP) is more important than distribution:
  • 13 tricks require 37 HCP (No Ace can be outside)
  • 12 tricks require 34 HCP (No AK in a suit can be outside)
  • 9 tricks require around 25-26 HCP
  • 7 tricks require around 20 HCP
Notes:
  • In general, you can use guideline 1 trick = 3 HCP (2.8 HCP to be more accurate)
  • Do NOT use Quantitative structure if you have a running suit but use control asking instead. (The HCP is less important because no of trick is more important). Use the concept of NTT (No Trump Trick) to do more thorough hand evalution

Quantitative Bids

Therefore:
Opener Responder Bid
12-14 NT 13-19 Bid 3NT
20-21 Bid 4NT: Opener bid 6NT if maximum, Pass if minimum
22 Bid Direct 6NT
23-24 Bid 5NT: Opener bid 7NT if maximum, bid 6NT if minimum
25+ Bid Direct 7NT
 
15-17 NT 9-16 Bid 3NT
17-18 Bid 4NT: Opener bid 6NT if maximum, Pass if minimum
19 Bid Direct 6NT
20-21 Bid 5NT: Opener bid 7NT if maximum, bid 6NT if minimum
22+ Bid Direct 7NT
 
18-19 NT 6-12 Bid 3NT
14-15 Bid 4NT: Opener bid 6NT if maximum, Pass if minimum
16 Bid Direct 6NT
17-18 Bid 5NT: Opener bid 7NT if maximum, bid 6NT if minimum
19+ Bid Direct 7NT
 
20-22 NT 5-11 Bid 3NT
12-13 Bid 4NT: Opener bid 6NT if maximum, Pass if minimum
14 Bid Direct 6NT
15-16 Bid 5NT: Opener bid 7NT if maximum, bid 6NT if minimum
17+ Bid Direct 7NT
 
23-25 3-8 Bid 3NT
9-10 Bid 4NT: Opener bid 6NT if maximum, Pass if minimum
11 Bid Direct 6NT
12-13 Bid 5NT: Opener bid 7NT if maximum, bid 6NT if minimum
14+ Bid Direct 7NT
 

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