Bidding Conventions >
DOPI (Double 0, Pass 1)
DOPI is the acronym for "Double = 0, Pass = 1." It is a convention used after partner bids 4NT
Blackwood or
4
Gerber to ask for aces, but the next player overcalls (usually in a sacrifice attempt). Using DOPI, responder has the following bids available:
| X | 0 aces |
| Pass | 1 ace |
| Cheapest bid over the overcall | 2 aces |
| Second-cheapest bid | 3 aces |
| Third-cheapest bid | 4 aces |
If playing Roman Key Card Blackwood, the responses are:
| X | 0, 3 or 5 keycards |
| Pass | 1 or 4 keycards |
| Cheapest bid over the overcall | 2 keycards without the trump queen |
| Second-cheapest bid | 2 keycards with the trump queen |
If partner bids 4NT followed by 5NT, he is making a Blackwood query for kings. All other rebids by partner are natural signoffs.
Other Considerations
DOPI is more informative than
DEPO, but the drawback is that it can't be played when the opponents compete above 5 of your trump suit. For example:
|
|
|
|
You
1
?
|
Opponent 1
3
|
Partner
4NT
|
Opponent 2
6
|
|
When this occurs, it's better to switch to
DEPO, or to simply play
DEPO all the time.
KQT5