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Rule of 12 - Similar to the Rule of 10, the Rule of 12 provides a
secondary criteria to consider a penalty double when holding a sufficient
number of low-level holdings in opponents' trump suit:
| 1. |
Your combined partnership
HCP is 20+ |
| 2. |
You have a misfit with
partner |
| 3. |
Your trump cards (any)
plus opponent's bidding level is 12+ |
Example: Assuming partnership holds 20+ HCP and no partnership fit, you do
not hold honors in opponents' suit yet have length in their suit, say 4 of
their agreed suit.
The opponents' 3 level bid promises 9 tricks. Adding our 4 trumps to
the opponents' bidding level, the calculation is: 9 + 4 = 12
According to the Rule of 12, a penalty double is warranted since the number
12 has been reached.
|
Opponents' Bidding Level |
Tricks
Required |
Number of nondescript
Trump required to Double
(assuming partnership misfit) |
| 2 |
6 + 2 = 8 |
12 - 8 = 4 |
| 3 |
6 + 3 = 9 |
12 - 9 = 3 |
| 4 |
6 + 4 = 10 |
12 - 10 = 2 |
Also see Environmental Factors
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